TW200931977A - Monitoring of coated substrate imaging - Google Patents

Abstract

The invention discloses a monitoring of coated substrate imaging. The coated substrate imaging includes a coated substrate and a monitor video camera. The coated substrate is made from coating a layer of multi-layer dielectric film. The monitoring video camera is placed on the backside of the coated substrate. The optical interference of the coated substrate is used to form incident visible light and infrared light on the coated substrate into a set split ratio, in which the spectral high reflective light of the visible light creates a mirror effect from the coated substrate to cover the video camera and the spectral low penetration light of the visible light creates imaging from the monitoring video camera. The monitoring video camera can capture the infrared image with high quality due to the spectral penetration light of the infrared light with very high penetration rate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-layer dielectric film substrate, and more particularly to an imaging device in which a pair of visible light exhibits high reflection and low penetration and high penetration and low reflection for infrared. [Prior Art] In recent years, the security of the world has been corrupted, and terrorist activities in Europe and the United States have often resulted in government investment in public facilities. It is necessary to install more security cameras for surveillance. And carry out appropriate prevention and deterrence. For example, in communities, metropolitan streets, stores, and other public places, in the event of theft, sexual assault, or major events, it is possible to observe and track the truth by monitoring the images recorded with the security camera. However, advances in technology have led to improvements in the evil knowledge and skills of thieves or terrorists. The obvious examples are the theft of surveillance cameras or the deliberate avoidance of surveillance sites. Therefore, the Concealed Camera for anti-theft surveillance is an urgently needed safety device in Europe, America and other countries around the world, especially for the public safety protection field after the 9/11 terrorist attacks in the United States. "Public security is more important than personal privacy" is more obvious. The camouflage hidden model for anti-theft and anti-terrorism surveillance mainly hides the camera body for monitoring or its photographic lens, makes the camera for surveillance difficult to be discovered and is stolen, or is deliberately avoiding the location of its surveillance. In recent years, it has been representative of a pin-hole camera. "The dome is coated on it's inside concave surface with a fine layer of chromium which renders the dome transparent from ifs relatively dark inside area and," CAMERACAPULE, No. 3,819,856, which was previously published in 1974. Opaque or reflective from 3 200931977 the lighter area outside the housing" mainly means that the concave surface of the transparent ball cover 26 of the camera 15 is plated with bismuth (metal chrome), so that the human eye sees the transparent ball from the outer surface of the transparent ball cover 26. The inside of the cover 26 is opaque...etc. In fact, the enamel layer plated on the concave surface of the transparent globe 26 is semi-transparent (if opaque, the visible light cannot or cannot be easily imaged into the camera 15), the camera 15 is hidden, and the observer can easily see it. Camera 15 in the dome.

Further, as shown in FIG. 2 of the patent document No. 3, 739, 703, which is disclosed in 1973, an opaque mask 10 is placed in the transparent dome 9 (anopaquemask). It is used to cover the incident light entering from the transparent ball army 9. The opaque mask 10 does not cover its camera lens (otherwise, visible light cannot or does not easily enter its camera image), so that the viewer can easily see the camera lens in the transparent dome 9 in close proximity. In addition, 'the invention patent r DISCRETE SURVEILANCE SYSTEM AND METHOD FOR MAKING ACOMPONENTTHEREOF', as disclosed in 1980, the abstract of the invention indicates that the important S' has a reflection that sweeps the cat's rotation and is placed in a reflective effect. Inside the dome, the interior of the dome is plated with several overlapping coatings. The ball cover is plated with a metallic silver layer and a protective layer of Si. Then, except for the window that retains the camera, the black is completely blacked out. The camera's lens is equipped with a sword material (the invention _f summary 丨 第 第 63 to 2 column 2 line). That is to say, the light outside the dome can only be accessed by the window of the camera. For the rest, please refer to the invention 囷8, and the seventh block of the invention manual, lines 29-38: the internal keys of the glass dome 220 have several re-raised Coating: wherein the recording layer 2 is found to increase the adhesion between the silver plating layer 224 and the glass dome 220. Of which 4 200931977

The SiO layer 226 is for protecting the silver plating layer 224 and controlling the transmission sensitivity range of the coated sphere 220. As for how to control? Please refer to paragraph 3 to line 30 of the invention manual. The number of SiO layers plated on the silver plating layer determines the sensitivity of the color outside the glass dome and the spectrum of the coated glass dome. How to decide? Please refer to the description of the eighth column of the invention, No. 12 to 21: before the SiO layer is not plated on the silver plating layer 224, the human eye sees blue when the light penetrates the glass dome 220. As the number of Si 〇 layers increases, the spectrum shifts in the glass dome 220, and the human eye sees a green-yellow-brown color. This rate of spectral change depends on factors such as the amount of SiO layer placed in the tungsten filament lamp, the temperature in the vacuum chamber, and the size of the area to be plated. When the vaporized SiO exhibits a desired color in the glass dome, the steaming is stopped. Since the refractive index of the SiO layer in the air is different from the refractive index of the SiO layer in the black-coated layer, the transparent plastic layer is additionally applied (this invention is referred to as the second block, line 3, line 34). As disclosed above, the method of occluding the camera is a metallized film or an opaque mask, and the third, 819, and 856 are hidden by the translucent metal chrome Cr. Also, the globe 4, 225, 881 is a silver-plated highly reflective metal. Further, as in No. 3, 739, 703, an opaque mask 10 is placed in the transparent dome 9 to cover the incident light entering from the transparent dome 9. Chrome (Chromium), silver (Ag), etc. are called metallic coatings. Because the key chrome is light brown, the hidden effect is not good, and the silver plating is easy to oxidize and blacken, so it mostly fades out of the international market. At present, some people have replaced aluminum metal (AI) in practical applications. For example, in 2007, the new patent number M326646 "aluminum hemispherical cover photographic device", and my utility model patent published in mainland China in 2007200720154044.5 "aluminum with anti-reflective film aluminized mirror half 5 200931977 ball A type of mask, etc., is a highly reflective metal aluminum film lib plated on a transparent substrate. The reflection of the incident light from the front side is used to cover (hide) the camera, and the transmission of the incident light can enter the camera. And a metal chromium (Cr) film with anti-reflection effect on the metal aluminum film to absorb and reduce the ghost caused by the reflection in the coating mask, so as not to affect the image quality. The plated reflective film 'is primarily to increase the reflectivity of the surface of the optical element. Generally, it can be divided into two categories, one is a metal reflective film, and the other is a full dielectric reflective film. In addition, there is a metal dielectric reflective film that combines the two. The metal reflective film has the advantages of simple preparation process and wide operating wavelength range; the disadvantage is that the optical energy loss is large, and the light energy of the incident metal film must be retained except for a set penetration rate (for part of the incident light to enter the camera). The remaining reflectivity cannot be very high. If the transmittance is not considered, the reflectance of the individual metallic silver Ag in visible light can be as high as about 98%. Metallic coatings have a wide reflection band and are relatively insensitive to incident light angles. The metal film has an absorption band for the infrared, which is disadvantageous for infrared night vision photography. Multi-layer dielectric coatings can achieve high reflectance at specific wavelengths and are insensitive to small angles of incident light. When large angles change (eg 45 degrees), the reflectivity will vary. In general, a multilayer dielectric film has a higher reflectance than a metal film, has a good firmness, and is highly resistant to damage, and is generally transparent in both visible light and infrared. SUMMARY OF THE INVENTION The problems to be solved by the present invention are as follows: As mentioned in the prior art, there are two disadvantages of a metallized film mask as a cover (hidden) camera: First, the light energy loss is large, and the light energy is incident on the metallized film. The hood, in addition to having to retain a certain amount of transmitted light into the camera imaging and absorption (loss) of the metal film, must also increase its residual reflected light energy. If the reflected light energy is too low, the specular reflection effect is poor, and the reflection effect is not easy (or impossible). The metallized film 6 200931977 The camera hidden (hidden) on the back of the mask achieves the purpose of hiding the decoration. If the penetrating light is deliberately reduced to relatively increase the reflected light, the penetrating light energy may be insufficient or impossible to image after entering the camera, which may affect the imaging quality. Second, the metallized film mask has an absorption band for the infrared light range, so that the transmitted infrared light can be attenuated, and the infrared image is taken by the camera at night or under illumination (for example, in a 1 lux) environment and with an infrared auxiliary light source. The effective distance also produces a very significant attenuation, so it is not suitable for night vision photography. The technical solution adopted by the present invention is: replacing the prior art metallized film mask with a plated (multilayer dielectric film) film substrate. There are two advantages after substitution: First, there is no optical energy loss, and the light energy loss of the "absorption" of the multilayer dielectric film is almost zero relative to the metal film. Second, the current technology of plating multi-layer dielectric film is easy to achieve infrared transmittance of more than 90% or even 99%. The coated substrate is formed on a transparent substrate (substrate) with a plurality of multi-layer dielectric coatings. The optical interference effect of the multilayer dielectric film enables the incident visible light and the infrared to reach a predetermined one. Split ratio. For example, when incident visible light is incident on the coated substrate, it can be divided into two paths: one of the light (for example, about 70% of the incident light) exhibits high reflection on the coated substrate to hide the back of the coated substrate. Monitor the camera; another light (for example, about 30% of the incident light) penetrates the coated substrate into the surveillance camera image (visible light image). And, when the incident infrared light is incident on the coated substrate, it can also be divided into two paths of light: one of the light (for example, about 96% of the incident infrared light) exhibits "very high" (relative to the reflectivity of the metallized film) The penetration rate penetrates into the surveillance camera imaging (infrared image). Among them, there are two purposes for allowing visible light to be highly reflective: one is to make the eye can not see (or not easily) see through the coated substrate to achieve the function of hiding the decorative camera of the key film substrate. Second, the human eye can increase the reflection through the mirror at a close distance. 7 200931977 Add the surrounding monitoring field, such as a wide-angle (with a curved coated substrate) mirror at the corner of the hypermarket or the parking lot. That is to say, the high reflection of visible light exhibited by the coated substrate imaging device can achieve dual use of near-end and far-end monitoring. The purpose of allowing visible light to be low-penetration is to make the surveillance camera that is placed behind the key film substrate lower the transmitted light as much as possible in order to increase the relative proportion of the reflected light. That is to say, for all kinds of commercially available cameras (generally called CCD), depending on the quality level, if the penetration of light reaches 20%~50°/❶ under the same ambient illumination, the camera can be imaged, then penetrate The minimum amount of light entering the light is controlled at 20% and does not have to be controlled at 50%. This increases the relative proportion of the reflected light (because under certain conditions, the transmitted light is inversely proportional to the reflected light) in order to increase the reflected light as much as possible. The larger the reflection, the more like a mirror. The purpose of making the infrared (light) high penetration is to let the infrared radiation amount (whether the infrared auxiliary light source or the infrared radiation existing in the environment) enter the film substrate to maximize the surveillance camera. The amount of light is introduced to monitor the camera's intake of infrared images of still quality. The transparency of the transparent glass cover of the general camera is about 92% (not 1%). That is to say, the coated substrate has the same transmittance to the infrared as the general transparent glass, but the former is more concealed. ❹ wherein the low reflection is preferably as low as or equal to 0% or close to 0%. Because the low reflection of the infrared has no other function in the implementation of the imaging of the present invention, such as the circle 4. The transparent substrate and the multilayer of the present invention are described below. The dielectric film layer and the surveillance camera are defined by the following terms: (1) Transparent substrate, transparent substrate can be divided into two categories: optical grade transparent glass and transparent resin. Transparent substrate must first have high transparency and inevitable surface quality. Strict requirements, try not to have any defects such as streaks, pores, whitening, fog pens, black spots, discoloration, poor luster, etc. The transparency of visible light and infrared in transparent substrates is also reflected by "light". Influenced by factors such as penetration, absorption, and scattering. In this embodiment, the scattered light of the incident light in the optical grade transparent substrate is almost negligible with respect to the metal film in 200931977. (IA) Transparent glass 'transparent glass is cyan, white glass and bk-7. (IB) Transparent resin, transparent resin is a non-crystalline body with less light scattering. Generally transparent polymer with a fine interface inside. Light scattering also occurs, which is typically a crystalline structure. For example, water and ice are also composed of H2 。. Water is transparent, and ice is mostly opaque. This is because ice is a crystal, and light scattering occurs to reduce light transmission. It is an amorphous body and exhibits less light scattering, so it is transparent.

Transparent resins with good transparency in industrial plastics include: PMMA (transparency about 93%), PC (transparency about 88%), PS (transparency about 89%), CR-39 (transparency about 90%), SAN resin. (Transparency about 90%), MS resin (about 90% transparency), poly-4-decylpentene-(TPX) (transparency > 90%). In addition, transparency such as methyl methacrylate, styrene copolymer (MAS), PET, PP and PVC is very good. Among these general-purpose transparent resins, the light transmittance is not only in the range of visible light but actually covers the near-infrared range of the wavelength, that is, the wavelength in the range of 400 nm to 1000 nm. The transparency of visible light and infrared light in transparent resins is generally affected by factors such as reflection, penetration, absorption, and scattering of "light." G When light enters the transparent resin, part of it will be reflected on the surface and lost. The example of reflection is usually when the refractive index n1 (=1) of the light is perpendicularly incident on the polymer having the refractive index n2, and the calculated surface reflectance R% is divided by the square of (n-丨) by (n+ 1) is expressed in squares. According to the manufacturer's data, the refractive index of transparent acrylic (PMMA) PMMA (Polymethylmethacrylate) is 1_49, and the surface reflectance R% is calculated to be about 4%. The total light transmittance of PMMA is about 93%. The loss of this light is mostly caused by the secondary reflection of the surface, and the internal loss such as absorption and scattering is very high. J, when the light hits the transparent resin molecule, The molecule will absorb its energy and rotate. 9 200931977 Movement, causing light absorption to reduce light transmission. The scattering occurring at the same time as the light absorption also greatly reduces the light transmittance. Since the scattering coefficient inherent in the transparent resin is proportional to the refractive index of 8 squares and inversely proportional to the wavelength 4, the scattering loss of the material having a low refractive index is small, and the influence of scattering is small in the visible light region having a long wavelength. In the infrared field where the wavelength is longer, the effect of scattering is almost as small as zero. In addition, some foreign matter generated or incorporated by the transparent resin or a transparent polymer during the manufacturing process may also reduce light transmittance due to scattering. According to the manufacturer's data, the optical grade PMMA foreign matter is only one tenth of the general molding PMMA. When the foreign matter particle size is 0·5μιη~0.07μηη, the optical grade PMMA' foreign matter is about 600~2000. /g, the amount of foreign matter of the general-grade PMMA is about 〜4000 to 20,000/g. In practical applications, the refractive index of the transparent resin is large as the temperature and humidity of the environment change greatly, and the refractive index is large. The structure of the transparent resin is not uniform, optically causing unevenness in the refractive index on the microscopic surface, and the refractive index of the optical grade is relatively uniform. This is why the optical grade PMMA is recommended in this embodiment. At present, acrylic PMMA (polymethyl methacrylate) is second to none in plastics, and it can also fully see through the body when the thickness of the fascia is 1 〇〇mm. It has a good surface gloss and is non-toxic to the human body. The PMMA made by Mitsubishi Rayon's data shows that the spectral light transmission rate increases in the ultraviolet light from around 250 nm and does not absorb at all in the visible light field. PMMA belongs to a kind of amorphous plastic (Amorph〇us). The polymer bonds are arranged in disorder, and there is no well-organized arrangement structure. During the solidification process, there is no crystal nucleus and grain growth process, only free high. The molecular chain is "freeze" (frozen). Therefore, it has a high transparent appearance. The amorphous plastic polymer has good light transmittance and the density of the material is also low; as for the crystalline (Crystalline) polymer, the density of the material is large due to the difference in refractive index between the spherulites and the amorphous regions. Poor light is not suitable for this __ imaging use. PMMA's acrylic sheet has good processing properties, both thermoforming (including molding, blow molding and vacuum blistering), as well as mechanical reinforcement of iron, car, and cut 200931977, and so on. Micro-computer controlled mechanical cutting and engraving not only improves the machining accuracy, but also creates cases and shapes that cannot be completed in the traditional way. Further, it may be followed by coating, etc., which is suitable for use in the embodiment of the present invention. A polycarbonate resin PC (Polycarbonate) which is slightly less transparent than PMMA (having a light transmittance of about 88%) is another transparent resin to which this embodiment is applied. The differences between the two are as follows: PMMA disadvantages: high water absorption, poor heat resistance, less impact, and easier ignition. PC disadvantage: poor formability. Because the viscosity of the PC is higher, the forming temperature is also higher. However, no particularly difficult forming techniques are required. © The coating method used in this embodiment is that in vacuum evaporation, the heat resistance of the transparent glass is about 300 ° C, and the temperature resistance of the PC is about 70 CTC and the temperature resistance of the PMMA is about 70. In C, 'the cold treatment with PMMA is more difficult (the temperature is too high to deform, the temperature is too low, the adhesion of the film is not good), but this is not technically available to the manufacturers with coating experience and better equipment in China. Difficulties. (2) Multilayer dielectric film, the multilayer dielectric film film (Material) taken in this embodiment, for example, Ti〇2, Ti2〇5, Ti3〇5, Nb2〇5, Zr〇2, Si〇2, etc. The oxide film is transparent in both the visible and infrared dual wave domains. The transparent region is mainly determined by the energy difference ΔΕ ❹ of the material from the valence electron energy level to the conductivity level and the absorption of the lattice oscillation energy. ΔΕ determines the short-wavelength limit (xs) of the transparent region,

Light waves with a wavelength less than As will induce electron diffusion and absorb (Fundamental absorption); while lattice oscillation can determine the long-wavelength limit (λι_) of the transparent region, and light waves with a wavelength longer than λ l will be lattice-oscillated and absorbed (Latt丨Ve vibration absorption). For pure materials, λε is large, and As falls in the ultraviolet region, so it is transparent in both the visible and infrared dual-wave domains. The reason for the absorption loss in the film layer is the presence of impurities like the energy difference from the valence electron energy level to the conductivity level and the absorption of the crystal oscillation energy. However, these "absorption" effects on the imaging in the film design and in the following examples are not negligible. If the ion-free source-assisted (IAD) transparent substrate is suitable, the temperature is increased to 250 ° C 11 200931977 ~ 300 ° C, and after vacuuming, a vacuum of about 15 mPa is used to obtain a strong transparent oxide film. However, if the transparent substrate is a PC substrate or a PMMA substrate, ion source plating is generally applied if a good film quality is to be obtained. Please refer to the variation of the reflectance and optical thickness of the film (bond film). It can be seen from the optical film interference phenomenon that when the light is perpendicularly incident on the single layer film, and the optical thickness Nd (which is the product of the film refractive index and the film thickness) is (2 λ 〇/2), λο, (3λο/2)... The reflection intensity of the wavelength is constant; if the optical thickness Nd is (λο/4), (3 〇/4), (5 〇/4)···, the reflectance will be a maximum value or a minimum value, and The value depends on whether the refractive index η of the film is greater than or less than the refractive index nS of the substrate. When η > nS, the reflectance is a maximum value, and at n < nS, the reflectance is a minimum value, as shown in Fig. 1. As can be seen from Fig. 1, the optical thickness of one layer is an odd multiple of a quarter of the wavelength of the incident light, so that the reflected wave forms destructive interference, and the antireflection effect with a reflectance of 0 can be obtained. However, the reflectance for other wavelengths is not zero, so in order to obtain a wide reflectance in the visible light range, it is usually a multilayer structure. The refractive index of the film layer and the film layer design can be appropriately selected to obtain an appropriate reflectance. As can be seen, a film with a thickness of one quarter wavelength and a low refractive index can be used as an anti-reflection film to reduce the surface reflectance, for example, on the surface of glass (BK7, η = 1.53). A single layer of magnesium fluoride (MgF2, n = l 38), ❹ is a simple structure of anti-reflection film. In contrast, if a material with a sufficiently high refractive index is recorded on the surface of the glass, it will greatly increase the reflectivity of the glass surface, so the film can be used as a good beam splitter, a single layer of titanium dioxide (Ti〇2, η = 2· 2) or zinc sulfide (ZnS, η = 2·35) films are often used for this purpose 'reflectivity of about 30%. Substantially the superposition of a single layer of film is a multilayer film. When using multilayer films, we can use a combination of high and low refractive index films to create a wide range of film designs to produce the optical properties we require. Common such as anti-reflection mirrors, high-reflecting mirrors, cut-off filters, band-pass filters, band-stop filters, and spectroscopic effects corresponding to this embodiment. The emergence of the computer not only makes the optical film 12 200931977 film design (computer-aided software) more convenient, but also the related research of optical film is a thousand miles. To date, difficulties in the fabrication of optical films have seldom appeared in design, and as long as the characteristics are required to be reasonable, such as the monitoring use of the present embodiment, a suitable multilayer structure can always be designed. The key issue is the improvement in the thin film plating process, how to precisely control the thickness and refractive index of each layer to achieve the desired optical and mechanical properties, even the mass production and cost reduction of the fabrication. In addition, development of thin film materials, development of advanced key film technology, measurement of thin films, and the like are not intended to be in the scope of the present embodiment, and should not be described in detail. Φ With regard to multilayer dielectric film, today in film optics, we initially can easily plate multi-layer quarter-wave film stacks with high refractive index and cross-change on optical-grade transparent substrates by vector method or admittance trajectory method. The expected penetration rate τ〇/〇 is obtained. In theory, it is also proved that with the same multi-layer number, the quarter-wave film stack has a higher reflectance R% than the non-quarter-wave film stack. The more the number of layers, the greater the reflectivity. In other words, it is easy for us to control the split ratio of penetration and reflection. The coating material is related to the results of the chain (for example, as shown in Figure IX). Although there are quite a few materials that can be checked and displayed, 'there is not much demand for optical film.' So we use different materials in different spectral regions. . In the currently available coating materials, the high refractive index in the visible light region is 2.4 or less and the low refractive index is 1.35 or more, so the width of the high reflection band of the single quarter-wave film stack is limited. Therefore, in order to satisfy the present embodiment, it is possible to have a wide reflection band like a metal film in the visible light region. It is necessary to widen the high reflection band of the dielectric film. One of the methods of broadening is to increase the thickness of each layer of the film system regularly (depending on the number of steps or the number of steps), so that any wavelength in a wide area can have more than one dog. The film layer's optical thickness is also close to a quarter wave. However, the reflectivity of the highly reflective region thus produced has many reduced ripples which must be optimized by the Simplex method. Other methods include adding a quarter-wave film stack with a short center wavelength to another quarter-wave film stack 13 200931977. The design of the coating can basically be started from the standard film system. For example, the high-reflection mirror is designed with a quarter-wave film stack foundation regardless of the width or the single or double wave number. When the initial design fails to meet the optical performance of the demand, it is optimized or modified and then synthesized using the computer software designed for commercial use (as in the following examples). By controlling the number of coating layers of the multilayer dielectric film and the thickness of the coating film, it is possible to control the spectral ratio of incident visible light to arbitrarily control the ratio of incident visible light to the surface of the film or to the extent of the film. Similarly, it is also possible to control the high penetration into the infrared by the number of coating layers of the multilayer dielectric film and the thickness of the coating. In the following, the control reflection and penetration of visible light show that the multi-layer dielectric film is indeed more flexible and practical than the metallized film. Assuming that the incident light is L, the reflectance of the incident light L on the substrate is R%, the transmittance of the incident light L on the substrate is τ%, and the absorption of the incident light l on the substrate is A%. It is expressed as follows: L = R% + T% + A% Assume for the metallized film substrate: L% = Ri% + Ti% + Ai% Assume for the coated substrate: L = R2% + T2% If the same camera has the same amount of light, ^0/0=12%, so FV/c^FV/o+A·!%. φ Because A!% is obvious, r2%>r1〇/0 This means that the same camera can reflect the reflectivity R2% after plating a multilayer dielectric film in the same illuminance environment. Rl% is big. That is to say, the reflection after the plating of the multilayer dielectric film is more like a bright mirror after the metal plating film. Similarly, if FV^Rj% is Τ2〇/〇> τ!%, this means that the reflectivity after plating a multilayer dielectric film is R2〇/. When the reflectance R!% after plating with a metal film is as large as the mirror-like reflection. Then, in the same illuminance environment, the same camera is coated with a multi-layer dielectric film, and it is inevitable that 14 200931977 can obtain more light input than the metal-coated film camera (the image quality is relatively better). It can be seen from the above that in the control of reflection and penetration of visible light, the multi-layer dielectric film is indeed more flexible and practical than the metallized film. In addition, the film coated with the multilayer dielectric film is transparent to the infrared, so that for the absorption of infrared light, the plated dielectric film is more suitable for infrared night vision than the metal plated film. (3) Surveillance camera, the "monitoring" of the surveillance camera described in this embodiment mainly refers to monitoring in a security environment such as anti-theft and anti-terrorism. The "camera" of the surveillance camera refers to an imageable unit that can be sensed by visible light and infrared in the wavelength range of 400 nm to 1,000 nm, including a video recorder, a common CCD (Charge-Coupled Device) and a CMOS (Complementary). Metal Oxide Semiconductor), in which the CCD camera is used in the industry of anti-theft security. [Embodiment] Please refer to FIG. 2, which is a schematic diagram of the application of the device in this embodiment. Figure 2 includes a coated substrate 1, an opaque housing 2, a camera 3, and an image display 4. A coated substrate 1 is placed on one side of the casing 2, and a camera 3 is housed inside the casing 2. The incident light penetrates the coated substrate 1 and is then imaged by the lens 31 of the surveillance camera 3. The image is displayed by being connected to the video monitor 4 via the video out of the monitor camera 3. Also shown in Fig. 2 are representative light rays, such as LI, Lla, Lib, and L2, L2a, L2b, and L2c. When the incident light LI (100%) is incident on the front surface of the key film substrate 1, it is assumed that the reflected light Lla accounts for 60% and the transmitted light Lib accounts for 40%. Among them, 60% of the reflected light Lla presents a bright mirror surface on the front surface of the coated substrate 1 (see a mirror). Among them, 40% of the transmitted light Lib enters the photographic lens 31 for imaging. When another incident light L2 (100%) is incident on the front surface of the coated substrate 1, its transmitted light L2a (the same transmitted light Lib) penetrating through the coated substrate 1 in 200931977 accounts for about 40%. However, the transmitted light L2a does not directly enter the photographic lens 31 but is reflected in the casing 2 to form another reflected light L2b. When the reflected light L2b is reflected to the back surface of the coated substrate 1, another reflected light L2c (about 60% of L2b) is generated. 'This reflected light L2c has a chance to be reflected again into the photographic lens 31 for imaging, reflected light L2c and transmitted light. Lib, as it enters the photographic lens 31, causes overlapping images, commonly known as ghosts, which affect the quality of the image. When the reflected light L2b reflects about 60% of the reflection on the back surface of the chain substrate 1, the light energy of the reflected light L2c accounts for about 24% (100% * 40% * 60%) of the light energy of the incident light L2. If the incident light L2 is about 200 Lux' in an environment with an illuminance of about 200 Lux, the transmitted light L2a is about 80 Lux (200 Lux*40%) 'the transmitted light L2a is incident on the inner surface of the casing 2'. The light energy loss of the inner surface (for example, absorption and scattering on the inner surface of the casing 2), at this time, the reflected light L2b is 80 Lux as the transmitted light L2a. On the other hand, the reflected light L2b of the reflected light L2b formed on the back surface of the coated substrate 1 is about 48 Lux (80 Lux*6O%). When the reflected light L2c of about 48 Lux enters the photographic lens 31 together with the transmitted light Lib of about 80 Lux, the superimposed image caused by the mixing is displayed on the image display 4.

In order to prevent the reflected light L2c from entering the photographic lens 31, there are four methods: First, an opaque black soft cover 32 is placed around the photographic lens 31 to block the reflected light L2c from entering the photographic lens 31. The black soft quilt must be close to the back surface of the coated substrate 1 without a light-transmissive gap, and the stray light that is not directly entered by the photographic lens 31 is blocked by the black soft cover 32. The black soft cover 32 is preferably black or dark. If it is white, it will cause white reflections to make the image of the inner white soft cover visible from the coated substrate 1. Off = One method, if applied to the high speed dome camera currently in the market, (Highspeed Dome Camera), there is a certain degree of difficulty. Because the lens of the two-speed ball is rotated at a high speed, the black soft cover 32 on the lens 16 200931977 31 will be damaged by the impact on the back surface of the coated substrate 1. Therefore, the black soft cover 32 is only suitable for the fixed lens 31 and is not suitable for the auto-rotating lens 31. Second, a black or dark rough surface is formed on the inner surface 21 of the casing 2. The purpose is to absorb and scatter the transmitted light L2a, so that the L2b light energy is greatly damaged and is not easily formed. That is to say, indirectly, L2C is not easily formed (or cannot be formed), and there is no problem that the reflected light L2c enters the photographic lens 31. Regarding the second method, if the coated substrate 1 is not a flat plate, it is like my own The new patent number M326646 "aluminum-coated hemispherical cover photographic device" is hemispherical, and when the incident light L2 is transmitted into the hemispherical coated substrate i, it may be transmitted again from the other side of the coated substrate 1 and incident. The light L2 is not transmitted at all into the inner surface 21 of the casing 2. At this time, if someone looks at the incident direction of L2, it is easy to see the camera 3 behind the coated substrate 1. Therefore, only a black or dark rough surface is formed on the inner surface 21 of the casing 2 for absorbing and scattering L2a, which is suitable for the flat coated substrate 1 and is not suitable for the coated substrate 1 having an excessive curvature. Third, a metal Cr film layer of about 3 nm thick is applied to the silver film substrate 1 to reduce the light energy of L2c by "absorption". Regarding the third method, a metal Cr film layer on the bond absorbs some incident light energy on the key film substrate 〇 1, so that the reflectance and the transmittance of the incident visible light are both affected. Seriously affected, like the metallized film, attention should be paid to the thickness control of the Cr film. The fourth 'formation of an anti-glare AG (anti-Glare) film layer in front of the key film substrate 1 scatters the light energy of L2c. The light energy of L2c is attenuated so that it cannot be imaged even if it enters the photographic lens. Regarding the fourth method, in order to prevent the AG film from affecting the scattering of the transmitted light Lib, it is necessary to dig a circular hole in a part of the AG film layer (for example, the central portion of the AG film layer) (with a circular photography) The lens 31) forms a window for allowing the transmitted light Lib to be directly imaged into the photographic lens 31 by the circular window. 17 200931977 Due to the different usage environments and usage conditions, if the four methods are used separately or combined, if necessary, the application can exert better results. Please refer to FIG. 3 , which is a schematic diagram of the application of the device in this embodiment. The difference between FIG. 3 and FIG. 2 is that the housing 2 of FIG. 2 is removed in the third embodiment. As shown in FIG. 3, the transmitted light L2a incident on the coated substrate 1 does not touch any object. (e.g., housing 2), L2a continues straight ahead until the light energy is exhausted, so there is no problem with the reflected light L2b in Fig. 2. At this time, if the human eye sees the coated substrate 1 from the direction of L2, it will be found that the coated substrate β 1 is in a transparent state (the transparency is 40% of the transmitted light Lib), and the human eye can easily see the object behind the coated substrate 1, especially It is more obvious when the illuminance behind the coated substrate 1 is greater than the illuminance of the front side of the coated substrate 1 (on the same side as the human eye). When the background environment of the coated substrate 1 is dark (for example, dark blue) or black (for example, in the casing 2), the human eye is observed from the front side of the coated substrate 1 under a general environment (for example, an illumination environment of about 200 Lux). Because it has 60% of reflected light, it looks like a mirror. And 40% of the transmitted light enters the coated substrate 1 and is 'absorbed' and "scattered" by the dark or black background, leaving little energy, and is covered by a strong 60% reflected light. . The human eye is viewed from the front side of the coated substrate 1 ’, which is almost a mirror image of the 60% of the reflected light. The effect of specular reflection is usually exhibited when there is more than 50% of reflected light. Of course, 70% or more of the reflected light is more like a mirror. If the coated substrate 1 has no background environment as shown in Fig. 3, the specular reflection of the chain substrate i is not significant. When the human eye is viewed from the front side of the key film substrate 1, most of the images of the two images, such as the image reflected by the Lla specular image and the image seen by the transmitted light L2a, are observed. Actually, 'shown in Fig. 3' is only one of the test work at the completion of mass production of the coated substrate 1. The imaging effect of the back surface of the key film substrate 1 is mainly tested. This work is to align the lens 31 of the camera 3 with the back surface of the coated substrate 1, and then connect the image display 200931977 4 to test the imaging effect of the transmitted light L1b on the camera 3. For example, on the coated substrate 1 which has been mass-produced, it is checked whether or not the surface of the coated substrate 1 is scratched or the film thickness of the coating layer is uneven. In fact, the imaging effect displayed on the image display 4, if under certain ambient illumination, its imaging effect mainly depends on (1) the light energy of the transmitted light L1b, and (2) the camera 3 image sensor (Image Sensor ) the quality. The larger the light energy ratio (percentage of incident light L1) of (1) transmitted light L1b, the better the imaging effect displayed on the image display 4. However, the larger the light energy ratio of the transmitted light L1b, the smaller the relative reflected light L1a. The smaller the reflected light Lla, the less visible the mirror surface, and the brighter mirror surface 'is not easy to hide the object behind the decorative coating substrate 1 (such as the camera 3), which also loses the hiding of this embodiment. The purpose of decorative imaging. The light energy ratio of the transmitted light L1 b actually applied in Figure 2 is a suitable range of choice from 1 〇% to 45%. As for (2), it mainly refers to the sensitivity of the image sensor of the camera 3. There are many kinds of styles commonly used in the domestic and foreign markets, including Japanese sony, SharP and South Korea's Samsung, which have different models of high end, Mid-end and Lowend. product. For example, the camera 3 of the three examples was tested with more than ten models of CCD and CMOS. Different imaging effects are also achieved in different illumination environments. If the cost of purchasing a high-end camera is replaced by the purchase of a low-end camera, it is also an alternative to a high-order camera to select a larger amount of light transmitted by the coated substrate Ub, or to appropriately match the auxiliary light source. For example, the round three is the test work when the coated substrate 1 is completed, that is to say, when the coated substrate 1 is mass-produced, the coated substrate 1 of the test OK can be sold separately to the camera manufacturer' so that the camera manufacturer can have different cameras 3 and different forms. The housing 2 can be assembled into a product that can be directly applied to consumers. In the third, if the coated substrate 1 is coated with an opaque layer, the opaque layer of the covering 19 200931977 does not include the window of the lens 3 of the camera 3. That is to say, part of the area of the opaque layer that is covered does not cover. This non-overlapping area serves as a window for the camera 3 lens 31. Then, the incident light L1 enters the camera 3 via the non-overlying area (the window of the lens 3 of the camera 3). Like the incident light L2, it cannot penetrate the opaque area of the coating. Thus, the coated substrate 1 coated with the opaque layer region can be combined with the camera 3 to form a single product. For example, the coated substrate 1 coated with the opaque layer region is combined with the camera 3 to form a "hidden doorway security monitor" product application. The application of this product is to dig a hole in a door for placement in the camera 3, and then adhere the back of the coated substrate 1 covered with the opaque layer to the door. The colored digital pattern and the name text are pasted or sprayed on the coated substrate 1 which is not covered with the opaque layer. Note that this pasted or painted area does not block the window of the lens 3 of the camera 3 so as not to block the light entering the lens 31 of the camera 3. Upon completion, only a decorative house number (coated substrate 1) is seen on the facade. When a visitor rings the bell, the camera 3 lens 31 can take a video of the visitor for monitoring or video recording. In the application of the product, the above-mentioned facade is in the range in which the coated substrate 1 is adhered, and if it is just the opaque facade region, the film substrate 1 does not have to be covered with the opaque layer. By analogy, as shown in Fig. 2 and Fig. 3, the combination of the coated substrate 丨 and the camera 3 does have a lot of application space. Please refer to FIG. 4 for a schematic diagram of the application of the device in this embodiment. Another application device is shown in Figure 4. The main difference between Figure 4 and Circle 2 and Figure 3 is that an infrared light source 5 of the auxiliary camera 3 is added to the fourth, and L3, L3a, L3b and L3c of the infrared light source 5 are conveniently explained. In fact, there are often day and night anti-theft surveillance cameras (commonly known as Day & Night CCD), which are shown in the fourth and recent international safety equipment exhibitions, except that the key film substrate 1 replaces the transparent glass. The design of this type of camera 20 200931977 is mostly composed of an auxiliary infrared light source 5 for night vision and a camera lens 31, and then placed in the same aluminum casing 2 for convenient construction. White days (enough ambient light energy) use visible light photography, nighttime (insufficient ambient light energy) using auxiliary infrared light source photography. For the night vision auxiliary light source 5, an infrared light emitting diode called IR-LED is commonly used, which is the cheapest and convenient night vision auxiliary light source on the market. The center wavelength is usually 850nm, and the single power is about l〇〇mW. In the finished products of day and night anti-theft cameras, product manufacturers often surround 12, 24, 36 or even more than one hundred IR-LEDs. A circuit board is surrounded by a circular cavity in the center of the board that is placed directly around the camera lens 31. Thus, the infrared ray radiation direction is ensured to be the same as the direction in which the camera lens 31 picks up the image. An infrared light source 5 added in the fourth embodiment of the present embodiment is the same as the small-scale anti-theft monitoring photographic apparatus currently sold in the market (Taiwan and the Chinese mainland commonly known as a gun machine). The infrared light source 5 and the camera lens 31 are also combined. After that, it is placed in the same casing 2. In recent years, the newly-produced rushing machines have mostly used single or double-layer transparent glass hoods. Figure 4 replaces the single-layer or double-layer transparent glass with a coated substrate 1. The IR-LED source emits light in the infrared range with a center wavelength of 85〇nm, which is within the range recognizable by the human eye. So the red eye is often seen in the industry as the “red burst”. It is nighttime. The main reason for exposing the location of the camera. As shown in FIG. 4, this embodiment also uses an infrared light source 5 having a center wavelength of 92 〇 nm to 940 nm, and the light emitted by the infrared light source having a center wavelength of 92 〇 nm or 940 nm is a human eye. In the unrecognizable range, the human eye cannot see the "red burst". In general, the day and night type camera has a built-in filter with a center wavelength of 850 nm in the infrared portion, and the infrared energy radiated by the infrared light source 5 having a center wavelength of 92 〇 nm to 940 nm passes through the slab. At the time, 21 200931977 was attenuated to about one-third. In this embodiment, two methods for compensating for the attenuated infrared energy are adopted. One is to change a filter that can pass through a center wavelength of 850 nm to a filter that can pass through a center wavelength of 920 nm to 940 nm. The second is to increase the relative amount of the IR-LED at a center wavelength of 920 nm to 940 nm to increase the infrared energy radiated by the infrared light source 5. As shown in Fig. 4, the infrared rays radiated by the newly added infrared light source 5 in the casing 2 are infrared L3 (the infrared radiation energy is assumed to be 100%), and the infrared L3 is incident on the coated substrate 1 'if The transmittance of the infrared L3 incident on the chain film substrate 1 is only about 40% as the visible light L1. Then, the infrared light transmitted by the infrared transmitted light L3b is only 40%. The infrared transmitted light L3b penetrates the key film substrate 1 and is incident on the object A, and the object A absorbs and then radiates out through the coated substrate 1 After that, it becomes the transmitted light L3c, and then enters the camera lens 31 for imaging (infrared image). When the transmitted light L3c entering the camera lens 31 enters and exits the coated substrate 1 back and forth, the infrared light source 5 radiates less than 20% (40%*40%) of the infrared L3c in the casing 2, which is used in the market. Obviously not practical. Therefore, the embodiment of the present invention must increase the transmittance of the infrared transmitted light L3b on the coated substrate 1 to about 90% to 96%, which is easily accepted by the market. This is also one of the intentions of the present invention to replace the metallized film with a multi-layer dielectric film. © The current IR-LEDs built into the commercially available day and night anti-theft surveillance cameras are mostly radiated through a protective cover of transparent glass and then penetrated back into the camera lens for imaging. The reflectivity of the transparent glass is 4%, and the infrared light energy radiated by the IR-LED is lost by 8%. If the transmittance of the coated substrate 1 is increased to 96%, the infrared light energy radiated by the R-LED is also lost by 8%. If the transmittance of the coated substrate 1 is 96% (see Figure 12 for details), at least, the infrared light energy loss radiated by the coated substrate 1 to the IR-LED is no more than that radiated by the transparent glass to the R-LED. The infrared light energy loss is much. In this case, the coated substrate 1 is not only depleted of infrared light energy with respect to the transparent glass, but also has a hidden decorative effect. If the four-infrared reflected light L3a is not blocked by the black soft cover 32, 22 200931977 may enter the camera lens 31 to image, and the image display 4 displays an image of the white exposed block, which is an infrared light source. 5 Radiation infrared block image. For example, if there is only one circular-shaped 10 mm wide infrared light-emitting diode (丨R-LED), the white exposed block is a circular dot-shaped white exposed block. If an object A is in front of the key film substrate 1, at the incident of the visible light L1, the transmitted light Lib enters the camera lens 31 for imaging, and finally the visible light image of the object A is displayed on the image display 4. If the camera 3 is a color camera, the visible light image is a color image. If the camera 3 is a monochrome camera, the visible light image is a black and white image. ® If an object A is in front of the key film substrate 1, when the infrared light source 5 emits light, the transmitted infrared L3c penetrating the coated substrate 1 enters the camera lens 31 for imaging, and finally an infrared image of the object A is displayed on the image display 4. . This infrared image is a monochrome image. The human eye is similar but not identical to the black and white image. If an object A is in front of the coated substrate 1, when the incident of the visible light L1 and the infrared light source 5 initiate the radiation, an overlapping image of the visible light image and the infrared image of the object A is displayed on the image display 4. At this time, if the visible light image is larger than the infrared image, the visible light image "over" the infrared image, so that the visible light image of the object A is displayed on the image display 4. 〇 If the visible light image is smaller than the infrared image at this time, the infrared image “covers over the visible light image” so that the infrared image of the object A is displayed on the image display 4. At this time, if the visible light image is close to or equal to the infrared image, both the visible light image and the infrared image exist simultaneously, so that the visible light image of the object A is displayed on the image display 4, but with a block similar to overexposure, the visible light image and the infrared image The overlap of the two at the same time will cause the viewer to call the "bad" image quality. In order to avoid causing the visible light of the object A to be displayed on the image display 4, a commercially available day and night type camera is usually a photosensitive resistor (CDS) in a transparent glass cover. The component is used as 23 200931977 to measure and control. When the ambient illuminance is insufficient (for example, about 1 OLux remaining), the control circuit activated by the CDS element turns on the power of the infrared light source 5 to emit infrared L3, and the infrared image is larger than the visible light image, so that the object A is displayed on the image display 4. Infrared image. The fourth is to omit the CDS component. Since the CDS is a conventional component commonly used in commercially available day and night surveillance cameras, it is not drawn in the figure to avoid the complicated drawing of Figure 4. The only thing to note is that in Figure 4, the CDS component accepts the direction of incident visible light, and does not pass through the coated substrate (for example, placed in a part of the housing 2) because the coated substrate 1 has a visible light transmittance of only 40. % (if the transmittance of the coated substrate 1 is 4%), which is different from that of a conventional cDS element disposed in a transparent glass (nearly receiving 92 〇/〇 of incident visible light). 'If it must be placed in the position of the coated substrate 1, the sensitivity of the CDS element must be adjusted. That is to say, if the CDS element is placed in the transparent glass to be activated at 10 Lux, the CDS element placed after the coated substrate 1 is adjusted between 20 and 30 Lux. At present, high-end products are provided with an automatic dual filter switching device in the space between the lens 31 of the camera 3 and the front side of the image sensor. The automatic dual filter switching device currently on the market is simply a device that automatically switches two filters such as an infrared cut filtter and an ordinary transparent glass passer. When the infrared cut filter is cut into the image sensing device, the infrared light is blocked, the image sensor only senses the visible light, and the infrared color is not visible on the image display 4 (True Color) . When the infrared cut filter is removed from the image sensor, the image sensor senses the incident light of both visible light and infrared due to the cut-in relationship of the ordinary transparent glass light-emitting sheet. Therefore, it is possible to capture images of visible light and infrared light, and there is also an organic image that causes overlapping images of visible light and infrared light. In this embodiment, the camera 3 shown in FIG. 4 is removed and replaced with a camera having a dual filter switchable, and the ordinary transparent glass filter in the dual filter is removed, and then Place an infrared pass filter. The camera 3 shown in the fourth embodiment has a camera 3 which is switchable by a double filter such as an infrared cut filter ICF (Infrared Cut flitter) 24 200931977 and an infrared pass filter 丨PF (丨nfrared Pass flitter). ^This time, when cutting into the infrared pass filter, only the infrared image is displayed on the image display 4, and the superimposed image of visible light and infrared is not seen. In FIG. 4, if the transmittance of the coated substrate 1 to visible light is 40% on average (as shown in FIG. 5 below), the human eye faces the coated substrate 1 at an angle to see the coated substrate 1. I often see the 丨r_led of the infrared light source 5. At present, most of the commonly used IR_LEDs are encapsulated in transparent resin, and the incident light transmitted by the coated substrate often causes a part of the reflection on the transparent resin, so that the interested person can observe at the proximal end. The "existence" of the infrared light source 5 is seen. ® See Figure 4A for an infrared black mask. A black mask 51 is included in the fourth A, and the mask is on the |R_led and an L4 representing the eyes of the human eye. The reflected light L4a generated on the surface of the coated substrate 1 by L4 allows the human eye to reflect the image reflected by the human eye when the surface of the coated substrate 1 is viewed from the front. When the human eye squints the coating plate 1, the reflection on the 丨R-LED transparent resin package table φ is seen because of the 4 〇〇/0 transmitted light L4a, and the presence of the infrared ray 5 is known. In order to prevent the human eye from squinting the coated substrate i, the reflection on the surface of the |R_LED transparent resin package is seen, so that a black mask 51 is placed over the surface of the 丨R-LED transparent resin package. The black mask sheet 51 is obtained by mixing blue and red transparent color materials, and then mixing and molding with a transparent resin, and the black mask sheet 51 is not rough, and the surface may cause scattering of infrared light. The black mask sheet 51 can cut off the visible light and allows the infrared light source 5 to radiate the infrared light L3, which can penetrate the black cover sheet 51. The black mask 51 has a hollow hole in the center for inserting into the lens of the camera lens and a hollow hole around the hollow light source 5. The transmitted light L4b generated by the human eye incident light L4 on the surface of the coated substrate 1 is absorbed by the black mask 51 and blocked. Such an eye-catching L4 does not see the IR_LED on the infrared source 5 and its reflection. 25 200931977 Regarding the manufacturing method and application of the black mask sheet 51, I have disclosed in the International Bureau of the World Intellectual Property Organization in accordance with the Patent Cooperation Treaty PCT, the published international bulletin 2008Α) 06260Α1, a manufacturer of infrared transparent black plastic products has been disclosed. A brief description of some of the relevant contents is shown in Figure 4." Please refer to Figure 4 for the relationship between the three primary colors and the three colors. In Figure 4, three large circles are cyan (c) Cyan, magenta (μ) Magenta, and yellow (Y) YeiiQW. Three small ovals (B), red enamel, and green (G)e can be composed of three primary colors such as cyan (C), magenta (yellow), and yellow (y) in the same proportions - black color (such as The center shown with _. (8), red (8), and green (6) and other three primary colors can also be combined to form a black color body (such as Black shown in the center). If blue (B), red (R), It can also be combined with green (G), etc. = the same proportion of components can also form a black color. For example, / one / color material (B) material can also be mixed to obtain black (Mack), magenta (M) The material can be mixed with the green (g) material to obtain the black cyan (C) material and the red (R) material, and the black color (酊^^) can be obtained. Degree, =^K===Blaek)妓-like black in the printing industry, the cyan (C), magenta (M), and yellow primary colors are mixed in the same proportion to form black, but this is not pure black. material. The mixing of two or three colorants can give a black or black-like color (Black of 囷B) due to absorption of the three primary colors. The slab 51 contains a "transparent" color mixture that is transparent in the "transparent" tree. The transparency is mainly to allow the infrared to pass. The object F 砉 51 can cut off the transmitted light L4b of the visible light U, and let people f to the object behind the black occlusion film 51 (for example, IR. LED). It can not pass 'mainly because of the above-mentioned transparent color material, 'Buguang L3'. If the "transparent" color material is changed to "opaque" color material, 26 200931977, the infrared light L3 cannot pass. If the transmittance of the coated substrate 1 to the visible light L1 is on average 2%% (sample C shown in FIG. 13), when the human eye faces the coated substrate 1, it is not easy to see through the coating regardless of front view or squint. Substrate 〖. Alternatively, an IR-LED (transparent colorless resin package) having a center wavelength of 850 nm can be changed to a 丨R-LED (dark blue resin package) having a center wavelength of 940 nm, and the black mask 51 can be omitted. For the coated substrate t of the apparatus of the above embodiment, the preparation method comprises the following steps: (Ο simulating the design on the computer; (b) providing a clean transparent substrate and the selected film; (c) the transparent substrate of (b) The film is placed in the coating machine; (d) the film thickness is monitored and corrected; (e) the spectrometer is taken out and the sample is completed and the spectrum is compared with the original (a) the simulated design on the computer. Step Description: U) Simulate the design on the computer: First, according to the following two requirements: (1) The transmittance T% in the visible light (400nm~700nm) part, the average control is 40%. (2) The transmittance T% in the infrared (780 nm to 1,000 nm) portion is controlled to be more than 90%. Simulate the design on the computer and plot the spectrum of the design. Please refer to the simulation design spectrum on the computer of sample A for sample A. The ordinate of the fifth is the penetration percentage T% (Transmittance %). The abscissa is the spectral wavelength (in nm). Other parameters are (1) white light environment, (2) frontal incident angle (0 degrees), and (3) reference wavelength of 450 nm. (b) Provide a clean transparent substrate and optional membranes··

Prepare a transparent PC with a thickness of 3 mm and a width of 100 mm and a width of 100 mm. In the lower hoofs, there are commonly used oxide films, such as TiG2 with a refractive index and Si〇2 with a low refractive index. Due to TiG2 capacity

^ 'And there will be no structure (due to incomplete oxidation), so in order to get the perfect Τι〇2 'starting material, Ti3〇5 is the most commonly used. The coating method is electronically etched and ion-assisted (IAD)' The high-refractive-index Ti3〇5 and the low-refractive-index &〇2 membranes are alternately steamed with 18 layers. “There are more than two pins in the coating machine, Τι3〇5, and Si〇2, etc. Membrane material. These two membranes are heated and then vaporized and attached to a transparent PC board. In fact, if the pre-melted Ti〇2 is detected, it can be found that the film material on the crucible contains a large amount of Ti2〇5 and Ti3. 〇 5. Therefore, in the following, for example, 囷12 is a combination of Ti〇2 and Si〇2. (c) The transparent substrate of (b) and the film are placed in a bonding machine to be plated: The machine number is coated with LP1300. The first layer: Ti3〇5. Optical film thickness = 〇. 5075 Second layer: Si镀2. Optical film thickness = 0.4615 Third layer: Ti3〇5. Optical film thickness = 2.0697 Fourth layer: Si〇2 plating. Optical film thickness = 〇. 3996 Fifth layer: Ti3〇5. Optical film thickness=1 2309 Sixth layer··Si plating 2. Optical film thickness:=0.9 521 seventh layer: Ti3〇5. Optical film thickness =: 〇. 6556 Eighth layer: Si〇2. Optical film thickness = 1. 2178 Ninth layer: Ti3〇5. Optical film thickness = 1.4742 Tenth Layer: Si镀2 plating. Optical film thickness =: 〇. 3776 11th layer: Ti3〇5. Optical film thickness = 4.1621 28 200931977 Twelfth layer: Bond Si〇2. Optical film thickness = 〇. 8iQ〇 Thirteenth layer: Ti3〇5. Optical film thickness=1. 7303 Fourteenth layer: Si〇2 plating. Optical film thickness=1.5163 Fifth layer: Ti3〇5. Optical film thickness=1.12〇9 Sixteen layers: Si〇2. Optical film thickness=1. 7299 Seventeenth layer··Ti3〇5. Optical film thickness=1.4229 Eighteenth layer: Si镀2 plating. Optical film thickness=2. 8657 ( d) Film thickness monitoring and correction: The thickness of each layer is controlled at ±1%, and the working gas of the ion source is also required to be filled with oxygen in the vicinity of the evaporation source. In this example, sample A is used for the coating machine. If there is no computer with automatic control, (or the penetration rate) to what value, if there is a spectrum _ system, it can be compared at any time to compare whether the optical effect of the coated film is in accordance with the theoretical value. , you need to quickly count Calculate the next layer or even how to repair other layers later (for example, sample C). If the coating machine used in sample A is not automatically calculated by the computer, the reflectance (or penetration rate) after plating each layer must be calculated in advance. To determine the stop plating point, the transparent substrate of the present embodiment, for example, is a flat type, but if it is a hemispherical type with a large curvature, in order to make the inner film thickness of the entire dome uniform, the design of the support frame must be simultaneously It has the functions of revolution and rotation, so that the film thickness inside the dome can be kept as uniform as possible. The transparent substrate of this embodiment is a multi-layered film, so that its film thickness is optically monitored. When the film thickness is increased, the reflectance and transmittance thereof change. When the reflectance and the transmittance go to the extreme point, it can be seen that the optical thickness nd of the coated film is an integral multiple of a quarter of the monitoring wavelength λ〇 (for example, the relationship between the reflectance of the film and the optical thickness 囷) This method has an allowable error but is simple and easy to identify. (e) After taking out, the spectrometer is used to test and plot the completed spectrum of the sample: because ion plating is used for cold (room temperature) cold plating, it can be taken out after about ten minutes. Then, the light drawn by the U-4100 spectrometer manufactured by Hitachi, Japan is 29 200931977. Figure 6 shows the actual spectrum after designing the sample for the first time. Compare the spectrum originally designed in Figure 5 with the actual spectrum after the first plating of the six. For example, there are three points that do not meet the ideal: (1) there is an abnormality at 4〇〇nm. (2) is a high bump at 550 nm (3) is about 70% at 850 nm in the infrared region. Ο

Among them, (1) and (2) make the film surface of sample a slightly yellowish purple. Among them, (3) the transmittance at a wavelength of 850 nm is only about 70%, which makes the 850 nm LED light source attenuate about 25% of the infrared energy in most of the day and night cameras on the market. From the above three shortcomings, it is necessary to correct them. The original film layer and film thickness design are unchanged, adjust the vacuum pressure and try again: For example, the vacuum degree of fixed oxygen is adjusted at 1.8*10-4t〇rr, and the room temperature is cold-plated, and the vacuum degree is adjusted to 2*. 1 (T5t〇rr or less. After the initial correction, the plating is performed once again. After the second key is completed, the spectrum of the U_41〇〇 spectrometer is taken out. Figure 7 is the actual spectrum after designing the second key of sample A.囷7, it was found that (1) the anomaly at 400 nm disappeared at a high bump at 550 nm to 52 〇nm, and increased by 45% from 45% to make the film surface appear yellowish. The domain is 780 nm~1, 〇〇〇nm exhibits a height of about 95%; the attenuation of 850 nm. ^Hawu has the above-mentioned Figure 6 and Figure 7 on the surface of sample A - can be applied? Whether to monitor the post behind sample A g Defective product causing color shift f ? (f) Imaging test: The sample with the color of the point on the surface of f6 and round seven is tested as shown in Figure 4. The position of the coated substrate is tested. Into 200931977, if the ambient illumination of the fourth floor is 2〇〇 Lux, watch the sample A displayed by the universal camera 4. For example, if there is no color deviation phenomenon, if the ambient illumination in Figure 4 changes to 4〇〇LUx, and the professional image display 4 is displayed, the image of the sample a is displayed, and the color deviation is slightly seen. The system vendors of the industry package engineering have different views on the color shift produced by the sample A in the application market. For the customers of the financial banking system, they do not accept the surveillance photography products with color-shifting phenomenon. However, customers such as store stores As long as the grid is relatively low, it is still acceptable to monitor the photographic products with color cast phenomenon, ^ for them only to monitor whether there is burglary action. ❹ Prepare a sample Β according to the above preparation steps. Sample Β is on the coated substrate 1 On the top, a layer of metallic chromium Cr is added as an anti-reflection layer. As explained above, the absorption of light by the metal chromium Cr causes light loss. Therefore, the average transmittance of visible light and infrared light will decrease. For the design spectrum of the sample B of this example, as shown in Fig. 8, the two requirements of the sample B design of this embodiment are: (1) The transmittance τ% in the visible light (400 nm to 700 nm) portion, the average control In 18%» (b) the penetration rate τ% in the infrared (780nm~1,000nm) part, the average control is above 70%. (a) Simulation design on the computer: The ordinate in Figure 8 is the percentage of penetration T% (Transmittance %) The abscissa is the spectral wavelength (in nm). Other parameters are (1) white light environment, (2) front incident angle (twist), and (3) reference wavelength is 420 nm. 0>) provides one Clean transparent substrate and optional film: Prepare a number of transparent green plate glass with a thickness of 3 inches. The selected film is also Ti3〇5 and Si〇2. (Ο The transparent substrate and the film of (b) are placed in a film machine for plating: The transparent substrate is placed in a coating machine (LP-1300) made in Taiwan for coating. 31 200931977 Three or more drafts are placed separately. Ti3 () 5, with coffee, and Cr film. The coating machine for preparing sample B and sample A, if not in the same key, the 2 is not f. Any changes in the coating machine, such as heating temperature For cloth, transparent substrate miscellaneous and size, oxygenation materials will be coated with each product, ___-machine to ensure

❹ For the preparation of sample B, the optical film thickness of each layer of Ti3〇5 of sample A is prepared, and each corresponding correction of the plated Si〇2 is prepared. The reference wavelength is changed to 420nm, as follows: A joint thick for the first layer: Ti3〇5. Optical film thickness = 〇. 5728 Second layer: Si〇2. Optical film thickness = 〇. 6〇37 Third layer: Ti3〇5. Optical film thickness = 2.3 plus 1 Fourth layer: Si镀2 plating. Optical film thickness = 〇 · 5228 Fifth layer: Ti3 〇 5 plating. Optical film thickness = 1.3893 Sixth layer · · Si〇2. Optical film thickness = 1. 2455 Seventh layer: Ti3〇5. Optical film thickness = 〇. 74 〇〇 Eighth layer: Si〇2. Optical film thickness = 1.5931 Ninth layer: Ti3〇5. Optical film thickness = 1. Lang The tenth layer: Si〇2. Optical film thickness = 0.4940 The eleventh layer: the key Ti3 〇 5. Optical film thickness = 4. 6978 Twelfth layer: Forged Si〇2. Optical film thickness = 1. Thirteenth layer: Ti3〇5. Optical film thickness = 1.953 () Fourteenth layer: Si镀2 plating. Optical film thickness = 1. 9 ribs 6 Fifteenth layer: Ti3〇5. Optical film thickness = 1.2652 Sixteenth layer: Si〇2. Optical film thickness = 2. 2631 Seventeenth layer: Ti3〇5. Optical film thickness = 1.6 〇 6 () Eighteenth layer · · Si 〇 2 plating. Optical film thickness = 3. 7489 (d) Film thickness monitoring and correction. 32 200931977 The film thickness is monitored as sample A, and finally a metal Cr layer with a thickness of 3 nm (Physical thickness) is bonded. Thus, B prepared two samples, sample B1 and sample B2, respectively. The Cr layer of the sample B1 is plated on the same side of the plated dielectric film surface. That is, the Cr layer and the dielectric film layer are plated on the same side of the transparent substrate, and may be referred to as a single-sided bond film. The Ci• layer of sample B2 is on the other side of the plated dielectric film surface, that is, the Cr layer and the dielectric film layer are plated on different sides of the transparent substrate, which may be referred to as double-sided coating. (e) After taking out, the spectrometer is used to test and plot the spectrum completed by sample B: See Figure 9 for the spectrum of sample B. Two curves are shown in Figure 9: the spectral curve Bla of the sample 与 and the sample curve, B2a. The curve Bla shows (1) that there is a peak at 570 nm, so that the outer surface of the sample B is slightly yellow. (2) The visible light transmittance rises to an average of about 27°/. . (3) The infrared transmittance is about 75%. Curve B2a sees that (1) a peak at 570 nm is missing, so that the outer surface of sample B is not slightly yellow. (2) The visible light transmittance increased to an average of about 23%. (3) The infrared transmittance is reduced to about .7 〇〇/0. From the spectrum diagram completed in sample B of Fig. 9 and the design spectrum diagram of sample b in the eighth embodiment, it is seen that the spectral curves of the two graphs have a drop; the penetration rate T% of the visible light 〇 400 nm to 700 nm is 18%, but Figure 9 did rise to about 27% in the visible light range of 400nm to 700nm. On the other hand, the penetration rate τ% of the infrared 780 nm to 1,000 nm portion is reduced from 75 〇/0 to 70%, and the variation range is relatively small. Among them, the phenomenon that the transmittance T% of the visible light in the range of 400 nm to 700 nm rises may be caused by the interference of the Cr plating layer on the plated dielectric film layer. However, as far as the curve Bla and the curve B2a are concerned, the difference between the plated single-sided film and the plated double-sided film is not very large for the effect of the image. Only the double-sided film is used for a relatively large number of man-hours (the other side of the plate is double-plated and then re-plated and then plated on the other side of the 200931977), and the cost is relatively high. Moreover, the film surface on the outer surface of the substrate which is plated on both sides is easily stained and an additional protective film is required. In addition, when recording a single-sided medium, as shown in Figure 9, there will be some obvious convex curves in the visible light (such as at 570nrT1). This is too close to the plating of the multi-layer dielectric and the key metal Cr film. Interference into the multilayer dielectric film. Multi-layer dielectric film and metal coated with double-sided film

The Cr film is separated by a transparent substrate, and the degree of interference affecting the multilayer dielectric film is relatively small. Sample B1 was carefully viewed from the human eye on the outside, and was significantly yellowish-green in color relative to sample B2. However, it can be seen from the test of the sample βΐ4 that on the general monitor 4 (non-professional high-resolution type), the imaging effect on the camera 3 is not medically large (the color shift phenomenon at 570 nm is not observed). If the curve Bla of Fig. 9 has a large difference between the high convex point of the visible light portion curve and the low concave point of the curved line, it is possible that the wavelength corresponding to the wavelength produces a "color" deviation corresponding to the wavelength. Simply put, if the wavelengths corresponding to these gaps fall mostly in the yellow light range of the long wave, the visible light image captured by the camera will produce a color with a bias of "yellow". ' If there is a significant color shift, the design of the number of layers can be increased, and the curve of the bend in the visible light portion (Ripple) can be "pull up" up and down, and the bumps and low pits can be reduced. The gap between the two. In this embodiment, if the transparent substrate is PIVnv|A, the number of layers will be increased (for example, increased to 28 layers), which will cause high temperature to cause deformation of the crucible. The initial solution is to plate another layer. The time interval is slightly longer, so that there is enough time to cool down. However, the solution is not very good (increasing the time of the coating process). The better method is to redesign and minimize the number of layers, as is the case prepared later. C In fact, for the image囷 的 § § 10, because different chain media will have different results, such as the above method can be corrected by computer or one more or two plating test correction. After the correction, it will be archived in the coating machine computer, and when it is used later, try to produce a stable product with a dedicated coating machine. 34 200931977 In addition, the thickness of the 3 nm layer of the Cr layer in Figure 8 is tested by the final spectrometer. If the penetration rate after the test (Lib shown in Figure 4) is not satisfactory, then the thickness of the Cr layer is reduced and then plated again. Until the penetration of Lib is close to the ideal value. Next, what effect does it have after plating the metal Cr film? Please refer to Figure 10 for the reflection spectrum of sample B1. The reflection spectrum of Figure 10 is plotted with the U4100 test, and the ordinate is the percentage of reflectance R%. The abscissa is the spectral wavelength (in nm). In the reflection spectrum of sample B1, 'curve B10 is the front side (no bond surface) reflection spectrum curve of the sample. Curve B11 is the back spectrum (forged film surface) of the sample B1. ❹

From the curve B10 of the curve B10 and the curve B11, the curve B11 which is reflected lower in the visible light portion can be seen that the key metal cr film can be seen to have an anti-reflection effect on the visible light portion, otherwise the two curves should be close to each other. The reflection curve in the infrared light also drops to around 20%. That is to say, the rhodium-plated layer achieves a certain degree of "absorption" effect on light. See Figure Η * — for the reflection spectrum of sample Β2. The reflection spectrum of 囷11 is plotted on the U-4100 test, and the ordinate is the reflectance percentage R%. The abscissa is the spectral wavelength (in nm). In the reflection spectrum of the sample B2, the curve B2 is the reflection spectrum of the front side (recording dielectric film surface) of the sample B2. Curve B21 is a reflection spectrum curve of the back surface (metal plated Cr film surface) of the sample B2. It is apparent from the hyperbola of curve B20 and curve B21 that the lower reflection line B21' does have an anti-reflection effect after the metal Cr layer is plated. The partial reflection curve in the infrared light also drops to around 5%. That is, the Cr plating layer achieves a certain degree of "absorption" effect. The reflection ratios of m and ® + _ in the figure are relatively high. This is because the multilayer dielectric is too close to the carbon metal Cr film, which affects the interference of the multi-layer dielectric film. #sample B1 _品B2 'Set the position of the coated substrate 1 in Figure 2 respectively. 200931977. After testing, the illuminance is about 150Lux. If the black soft cover 32 is removed, it will not be visible on the image display 4. Ghost. That is to say, the Cr plating layer of the sample B1 and the sample B2 absorbs part of the L2b, so that the reflected light L2c on the Cr-plated layer is attenuated and attenuated to a minimum, so that even if it enters the photographic lens 31, it can no longer be tested in illuminance. Under the environment of about 250Lux, if the black soft cover 32 is removed, the image display 4 can be seen closely and there is no obvious ghost. After the test, in the environment of about 500 Lux, if the black soft cover 32 is removed, a ghost image which is not obvious can be seen on the image display 4. That is to say, L2c "light energy" plated with layers "absorbed" is not enough. If you increase the thickness of the layer, you can absorb more L2c light energy, but it will also reduce the ratio of the reflected light Lia to the transmitted light Lib (as shown in Figure 8). At this time, the black soft cover 32 is inserted around the camera lens 31 to prevent the reflected light L2C from entering the camera lens 31. Please refer to Figure IX again, in order to flatten the curve of the visible light (Ripple). In fact, the gap between the high-bump point of the visible light curve and the low-pitched point of the curve should be flattened. If the machine of the same coating machine is matched with a higher level of ion grab and more design experience for the coating design. It is not impossible to redesign the film layer of less layers. Now reduce the layer of film 18 to the advanced design of layer 12 Q layer: The two requirements of advanced design are: (1) in visible light (4〇〇nm~7〇〇nm) part of the penetration rate τ%, half average is controlled at 20%. (b) The penetration rate in the infrared (780 nm~1, 〇〇〇nm) portion is 〇/〇, and the average is controlled at 95% or more. Please refer to 囷12 for sample C design spectrum. . The vertical coordinate of /, ^11 is the percentage of transmittance (Transmittance J °, the spectral wavelength of the coordinates (in nm). Other parameters are (1) white light environment, (2) incident angle (the reference wavelength of the temperature is 550 nm. 36 200931977 The method steps for preparing sample C are the same as those for sample A and sample B. For the sake of simplicity, only the different membranes, the number of layers and the film thickness are described: the selected membranes are Ti〇2 and Si〇2, and the membrane is selected. The number of layers is 12, and the optical thickness Nd (which is the product of the refractive index of the coated film and the thickness of the coating) is directly changed to the thickness of the coating (Physical thickness).

The first layer: Ti〇2. Coating thickness = 31. 04 nm Second layer: Si〇2 plating. Coating thickness = 68. 82 nm The third layer: Ti〇2. Coating thickness = 48. 84 nm Fourth layer: Si〇2. Coating thickness = 48. 79 nm Fifth layer: Ti〇2. Coating thickness = 49. 86 nm Sixth layer: Si〇2. Coating thickness = 96. 54 nm The seventh layer: Ti〇2. Coating thickness = 59. 74 nm The eighth layer: Si〇2. Coating thickness = 100. 55 nm The ninth layer: clock Ti〇2. Coating thickness = 58. 06 nm Tenth layer: Si〇2. Coating thickness = 141. 89 nm The eleventh layer: Ti〇2. Coating thickness = 37.43 nm Twelfth layer: Si〇2 plating. The coating has a refractive index of 2.53 at a wavelength of 400 nm. The refractive index at a wavelength of 450 nm is 2.449. The refractive index at a wavelength of 500 nm is 2.397. The refractive index at a wavelength of 550 nm is 2.362. The refractive index at a wavelength of 600 nm is 2.336. The refractive index at a wavelength of 650 nm is 2.318. The refractive index at a wavelength of 700 nm is 2.304. The refractive index at a wavelength of 750 nm is 2.293. The refractive index at a wavelength of 800 nm is 2.284. The refractive index at a wavelength of 850 nm is 2.277. Among them, Si〇2: 37 200931977 has a refractive index of 1.49 at a wavelength of 422 nm. The refractive index at a wavelength of 471.5 nm is 1.48. The refractive index at a wavelength of 540.5 nm is 1.48. The refractive index at a wavelength of 550 nm is 1.48. The refractive index at a wavelength of 624.5 nm is 1.47. The refractive index at the wavelength of 753.5 nm is 1.47. There are three curves in the circle twelve, respectively, the curve C0 is the front angle incident angle, the curve C30 is the 30 degree incident angle, and the curve C45 is the 45 degree incident angle. It can be seen that when the incident angle increases, the curve shifts in the short-wave direction. When we look at the surface of the positive sample C and look at the surface of the sample C facing the 30-degree squint, we will see a different color of the surface. Another different color is seen on the surface of the sample C opposite to the 45-degree squint. Please refer to 囷13 for the actual spectrum after preparation of sample C. It can be clearly seen in 囷13: (1) The transmittance το/〇 in the visible light (400nm~700nm) part is about 20% on average. (2) The transmittance τ% in the infrared (780 nm to 1,000 nm) portion is between 95% and 96%. The actual spectrum of sample C in 囷13 is indeed very similar to the original design spectrum of Fig. 12. Φ For the preparation of the sample A, the sample B, and the sample C, the test for the coated substrate 1 includes the steps (a) to (e). However, for the subsequent mass production, for example, when the film recording substrate 1 like the sample C is mass-produced at this stage, the design data of the film layer (for example, 12 layers) is input into the computer of the bonding machine. The other coating process includes the film thickness. The monitoring and correction of the monitoring is automated. In addition to the fully equipped coater, we only need to perform the step (b) to select the appropriate transparent substrate and film. Please refer to FIG. 14 for a flow chart of the preparation of the coated substrate 1.囷14 contains: 38 200931977 (a) Input process data; input the film and film thickness design data into the control computer of the coater. The material including the number of layers of the coated substrate 1 and the film thickness of each film layer as shown in Fig. 12 is shown. (b) Inserting the transparent substrate and the film to be placed in the bell; placing a number of transparent green plate glass with a thickness of 3 legs into the fixture, and selecting the evaporation material of the film Ti〇2 and Si〇2 into the coating machine (eg 坩埚). (c) Process condition setting; can be plated, the conditions are set to include vacuum pressure and temperature. For example, the degree of vacuum needs to be 2x10 torr, because the transparent substrate is made of glass, so the temperature is adjusted to 3 〇〇. If the transparent PMMA substrate is used, the temperature can be adjusted to room temperature. (d) Monitor film thickness and film layer; determine whether the thickness of the plated film reaches the designed thickness by quartz film thickness gauge or optical film meter. And, whether the film layer is at the last layer (for example, the description of Fig. 12), whether the number of film layers has reached the 12th film layer. Before the 3mm transparent blue plate glass is taken out, if the temperature is lowered to about 2 〇 (Tc starts to deflate (inject air into the vacuum chamber), and wait for cooling to about 50~6 (when opening the door, remove the coated substrate 1. If it is After the cold-plating treatment of the transparent PMMA substrate, the coated substrate 1 can be taken out for about ten minutes. φ In summary, the following are disclosed: (1) The present invention is a monitoring application for imaging a coated substrate, and is suitable for security surveillance photography. Figure 2 includes at least one coated substrate 1 and a surveillance camera 3° + (2) The coated substrate 1 is a transparent substrate coated with a multilayer dielectric film, such as samples A, B, and C. Reflectance, transmittance (such as samples A, B, and C) and absorption rate (such as sample B) of incident light. (3) Visible light L1 and infrared incident on the coated substrate 1 by optical interference of the coated substrate 1. The light L3 respectively forms a set split ratio. For example, the visible light L1 forms the reflected light L1a, the transmitted light Lib, and the infrared light L3 39 200931977 forms the reflected light L3a, the transmitted light L3b, and the transmitted light L3c, as shown in Fig. 4. Coating substrate 1 for this embodiment For the application, it is more important that the reflected light Lla of the incident visible light L1 and the transmitted light L3c of the incident infrared light L3 are because the reflected light Lla is related to the specular reflection effect of the coated substrate 1. The transmitted light L3c is related to Infrared imaging quality of the coated substrate 1. (4) In order to prevent the reflected light L2c from entering the photographic lens 31 together with the transmitted light Lib, the overlapping image is formed. The coated substrate further includes a metal-plated Cr layer or a key anti-glare AG layer. A black soft cover 32 and a pair of filter switching devices, wherein the dual filter is an infrared passering plate and an infrared cut-off film. (5) Imaging of the coated substrate for monitoring purposes, in actual The application further comprises an opaque casing 2, as shown in Fig. 4. (6) The back of the coated substrate 1 may be covered with an opaque layer, and the opaque layer of the coating retains a notch, the gap As the window of the lens 3 of the camera 3, it can replace the opaque shell 2 of the above (5) in application. (7) When the transmittance of infrared light is above 95% (for example, 95% to 99%) When it is called extremely high transmittance, this "pole" is relative to the key metal. The low transmittance rate emphasizes the emphasis. This is emphasized by the fact that "the polar surface transmittance of infrared light is one of the technical features of the present invention". If the coated substrate 1 and the metallized film substrate are incident on the light The same penetration rate is about 20%, the penetration rate of the metal-plated substrate to the infrared is also about 20%. It is tested with the same infrared source 5, as shown in Figure 4, the infrared source The infrared L3 of 5 radiation hits the object A and then re-reflects through the coated substrate 1 '. Finally, it enters the transmitted light L3c imaged by the camera lens 31, leaving about (0·96*0. 96=0. 92) 90% Light energy. On the other hand, the metal-plated substrate does only have about (〇·2*0. 2=0. 04) less than 〇·5 into the light energy. That is to say, if the infrared night vision distance between the coated substrate 1 and the metallized substrate is almost the same, the difference between the two is almost twice (0.92/0.04 = 23). If the infrared light source 5 is placed outside the casing 2 as shown in FIG. 4, the infrared night vision distance between the film substrate 1 and the metal plated substrate is almost only five times different from that of 200931977 (0.96/0·20). =4. 8). If the auxiliary infrared light source for night vision is combined with the camera lens and then placed in the same aluminum housing, the day and night type anti-theft surveillance camera is obviously not suitable for the metal-plated substrate as a hidden decorative mask. If the purpose of hiding the decoration is to install a metallized substrate, such as the key aluminum substrate made by the previous patent number M326646, it can only be used during the day (or where the ambient illumination is sufficient), at night (or the ambient illumination is not It is difficult to play the role of night vision photography in ample places. In general, the apparatus including the coated substrate 1 prepared in the present embodiment and the monitoring camera 3 of the present embodiment is combined as described above, and the anti-light Lla of the coated substrate 1 exhibits a highly reflective mirror surface to cause the surveillance camera 3 to be camouflaged and hidden. The effect is that it has the function of "not easily stolen by theft or deliberately evading its monitoring location"; at the same time, the coated substrate 1 has a very high transmittance (about 96%) for the infrared light, so that it can reach "nighttime" The high-quality infrared image can be ingested. That is to say, the present invention has achieved the unpredictable effect of the "day and night imaging and the ingestible quality infrared image of the concealable decoration" for the day and night type anti-theft surveillance camera. . 41 200931977 [Simple description of the diagram] The first one is the relationship between the reflectivity of the film (coated film) and the optical thickness. FIG. 2 is a schematic diagram 1 of the device application of the embodiment. FIG. 3 is a schematic diagram 2 of the application of the device in this embodiment. FIG. 4 is a schematic diagram 3 of the apparatus application of the embodiment. Figure 4A is a schematic diagram of an infrared black mask. Figure 4B is a schematic diagram showing the relationship between the three primary colors and the three colors. Figure 5 is a simulated design spectrum of the sample A on a computer. Figure 6 is the actual spectrum of the design sample A after the first plating. 〇 Figure 7 shows the actual spectrum of the second sample after design sample A. Figure 8 is a design spectrum diagram of Sample B of the present example. Figure 9 is a spectrum of the completion of Sample B. Figure 10 is the reflection spectrum 样品 of sample B1. Figure 11 is a reflection spectrum of sample B2. Figure 12 is a design spectrum of sample C. Figure 13 is the actual spectrum after preparation of Sample C. Figure 14 is a flow chart showing the preparation of the coated substrate 1. ❹ 42 200931977 [Description of main component symbols] λο wavelength L1 incident light Lla reflected light Lib transmitted light L2 incident light L2a transmitted light L2b reflected light L2c reflected light L3 infrared radiation L3a infrared reflected light L3b infrared reflected light L3c infrared transmitted light L4 incident Light L4a reflected light L4b transmitted light 1 coated substrate 2 opaque housing ❹ 21 inner surface of housing 2 camera 31 lens 32 black soft sleeve 4 image display 5 infrared light source 51 black mask sheet 〇 43

Claims (1)

200931977 VII. Patent application scope: 1. A coated substrate imaging device suitable for security surveillance photography, comprising: a coated substrate, the coated substrate is a transparent substrate coated with a plurality of dielectric films, and the optical interference of the coated substrate Forming a configurable split ratio of visible light and infrared light incident on the coated substrate; a monitor camera accommodating the monitor camera on the back surface of the coated substrate and the monitor camera sharp head facing the back surface of the coated substrate; The coated substrate forms a mirror surface for the high reflection of the visible light, so that the surveillance camera reaches a hidden decoration, and the low-passing light splitting the visible light enters the surveillance camera, and the light is split by the infrared light. The high transparency of the light transmission allows the surveillance camera to capture high quality infrared images. 2. A coated substrate imaging apparatus according to claim 1, wherein the coated substrate has a spectral ratio of between 55% and 80% in visible light and a transmittance in infrared. Between 75 and 96%. 3. According to the shot, please apply the patent group Qun ^ riding _ kind _ base subtraction device, wherein the coated substrate further comprises a metal plating layer (a layer or an anti-glare layer. The job is a substrate device, wherein the key film substrate is further covered with an opaque layer, and the opaque layer of the coating retains a gap. 5. A key film substrate according to Item 1. An imaging device having a 6 (four) shape or a mixture of a plane and a (4). The key film substrate imaging device of the above-mentioned transparent item, wherein the substrate is coated with a substrate, wherein the transparent substrate In order to be an acrylic PMMA, a key film substrate imaging device according to the scope of claim 1-4, in which the film of the multilayer dielectric film is transparent to both visible light and infrared light. The coated substrate imaging device according to the first aspect of the invention, wherein the monitoring camera is a CCD camera. , the surveillance camera is CMOS photography The invention relates to a coated substrate imaging device according to the invention of claim 10, wherein the surveillance camera further comprises a black soft cover. 13. According to the scope of the patent application. A coated substrate imaging device, wherein the surveillance camera further comprises a black mask sheet. 14. A coated substrate imaging device according to the scope of the patent application, wherein the monitoring camera is taken An infrared light source having a central wavelength of 920 nm to 940 nm is further included around the window. 15. A coated substrate imaging apparatus according to the scope of the invention, wherein the monitoring camera further comprises a pair of filter switching devices. According to the coated substrate imaging device of claim 15, wherein the dual filter of the dual filter switching device is an infrared pass filter and an infrared cut filter. The coated substrate device of claim 1, wherein the image forming device further comprises an opaque casing. A coated substrate device according to the above aspect of the invention, wherein: the coated substrate is placed on one side of the casing and the monitoring camera is housed inside the casing. 19. According to the scope of claim π A coated substrate device, wherein 'the inside of the casing is formed with a black or dark rough surface. 20. A coated substrate imaging device suitable for security surveillance photography, comprising: a coated substrate, the coated substrate is transparent A plurality of dielectric films are plated on one side of the substrate; a surveillance camera is mounted on the back surface of the coated substrate and the back surface of the coated substrate is facing the 45 200931977 surveillance camera lens; the steps of preparing the coated substrate include: U) input Process data; (b) Place the transparent substrate and film to be plated; (c) Process condition setting; (d) Monitor film thickness and film layer. 21. According to a coating method according to claim 20, a design of the film layer containing the coated substrate and the film thickness of each film layer in the step (a) prepared by the coated substrate . 22. The film substrate according to claim 20, wherein the film material is Ti2 and Si2 in the step (b) of the substrate preparation. A coating substrate imaging apparatus according to the second aspect of the patent application, wherein the vacuum degree in the coating machine in the step (c) of preparing the coated substrate is required to be 2 x 10 5 torr. 24. A coated substrate imaging apparatus according to the second aspect of the patent application, wherein in the step (d) of preparing the coated substrate, the film thickness and the monitoring of the film layer comprise a quartz film thickness meter or an optical film film meter. Determination. 46