CN2881677Y - Liquid crystal on silicon optical engine - Google Patents
Liquid crystal on silicon optical engine Download PDFInfo
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- CN2881677Y CN2881677Y CN 200520106019 CN200520106019U CN2881677Y CN 2881677 Y CN2881677 Y CN 2881677Y CN 200520106019 CN200520106019 CN 200520106019 CN 200520106019 U CN200520106019 U CN 200520106019U CN 2881677 Y CN2881677 Y CN 2881677Y
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Abstract
一种硅基液晶光学引擎，包括壳体和设在壳体内的照明系统、色光变换系统及安装在壳体外的投影镜头。光变换系统包括光耦合器、二向色分光器、三个硅基液晶成像芯片。光耦合器将照明系统输出光分成正交的两束光，该两光束方向上各自安置有第一和第三硅基液晶成像芯片，其中的一路光束上在光耦合器和硅基液晶成像芯片之间放置二向色分光器，在其反射光方向上放置第二硅基液晶成像芯片；由三个硅基液晶成像芯片分别返回的光束在光耦合器合色后进入镜头投射成像。本实用新型具有非常简单的结构，系统中去掉了90度角旋光器件；也不使用全反射空气隙；具有较少的光学元件，提高了制造工艺性，降低了成本；有效提高了光能利用率，易于量产。
A silicon-based liquid crystal optical engine includes a shell, an illumination system inside the shell, a color-light conversion system and a projection lens installed outside the shell. The optical conversion system includes an optical coupler, a dichroic beam splitter, and three liquid crystal on silicon imaging chips. The optical coupler divides the output light of the lighting system into two orthogonal beams. The first and third liquid crystal on silicon imaging chips are arranged in the direction of the two beams, and one of the beams is on the optical coupler and the liquid crystal on silicon imaging chip. A dichroic beam splitter is placed between them, and a second liquid crystal-on-silicon imaging chip is placed in the direction of its reflected light; the beams returned by the three liquid crystal-on-silicon imaging chips respectively enter the lens for projection and imaging after being combined by the optical coupler. The utility model has a very simple structure, removes the 90-degree angle optical rotation device in the system; does not use the total reflection air gap; has fewer optical elements, improves the manufacturing process and reduces the cost; effectively improves the utilization of light energy rate, easy for mass production.
Description
Technical field
The utility model relates to the projection display technique field, is applicable to digital back projection TV and projector.It specifically is exactly a kind of liquid crystal on silicon light engine.
Background technology
Liquid crystal on silicon (Liquid Crystal on Silicon; LCoS) light engine is the optical system of a complexity, the liquid crystal on silicon light engine is a kind of reflection type liquid crystal projection display technique based on standard CMOS (complementary metal oxide semiconductor (CMOS)) technology, be to be integrated in LCD panel and the circuit that drives liquid crystal on the silicon chip in the lump, be made into the liquid crystal on silicon imager chip, produce electronic image and modulation input light, the liquid crystal on silicon imager chip is operated under the condition of polarized light.
The liquid crystal on silicon light engine is the uniform line polarized light that utilizes light source to produce, be divided into red, green, blue three coloured light, shine respectively on three liquid crystal on silicon imager chips, come out by electronic image modulation back reflection, then, to being closed look, project to the image of display color on the screen through projection lens by three coloured light of image modulation; Projection Display can be a rear projection, also forward projection.
The liquid crystal on silicon light engine generally is divided into three parts: illuminator, coloured light transformation system, projection lens.
Illuminator is generally produced high brightness by ultrahigh pressure mercury lamp light also can use xenon lamp, Halogen lamp LED etc.; Light beam is at first filtered infrared light and ultraviolet light, then, through equal optical device and polarisation switching device, obtains the linearly polarized light of even illumination.Typical utility structure as depicted in figs. 1 and 2.Illuminator 100 shown in Figure 1 comprises lamp 1, UV-IR optical filter 2, the polarizer 3, optical wand 4, first lens 5, second lens, 6 compositions; Wherein first lens 5 and second lens 6 constitute the beam-expanding collimation device.Illuminator 101 shown in Figure 2 comprises lamp 1, UV-IR optical filter 2, first fly's-eye lens 7, second fly's-eye lens 8, the polarizer 9, collector lens 10 compositions.
The coloured light transformation system is that linearly polarized light beam is divided into red, green, blue three looks, is divided into three the tunnel, is input to respectively in three liquid crystal on silicon imager chips and carries out image modulation, then, closes the look projection.At present, the realization of liquid crystal on silicon light engine coloured light transformation system has three kinds of technology paths, can form multiple scheme:
One, it is a kind of coloured light conversion scheme of utilizing polarization beam apparatus (PBS) and half-wave plate (also claiming retardation plate, half-wave plate or zone plate) to realize, it utilizes the characteristic of PBS with S beam reflection in the light beam and the transmission of P light beam, to couple light in the liquid crystal on silicon imager chip, as shown in Figure 3, light beam 01 is the incident of S light, reflected by PBS11, light impinges perpendicularly in the liquid crystal on silicon imager chip 12, then, is returned PBS11 and transmission by electronic image modulation back reflection; Typical practical plan such as Fig. 4, shown in Figure 5.
Shown in Figure 4, it is the typical scenario of a coloured light transformation system, comprise: X-shaped dichroic plate 14, dichroic plate 16, two reflectors 13 and 15, three PBS11 and two 1/2nd wavelength plates 18, color-combination prism 19 and first, second and third liquid crystal on silicon imager chip 12 are formed.Visible light from light-source system 100 is a S light, by X-shaped dichroic plate 14 separated into two parts, wherein one road light is again by dichroic plate 16 separated into two parts, form red, green, blue three monochromic beams, be coupled to first by PBS11 respectively, two, in the three liquid crystal on silicon imager chips 12, after image modulation, be coupled to color-combination prism 19 by PBS11 respectively again, wherein, middle coloured light is P light transmission color-combination prism 19, and the coloured light on top is reflected by color-combination prism 19 after being rotated into S light by 1/2nd wavelength plates 18, the coloured light of bottom is reflected by color-combination prism 19 after also being rotated into S light by another 1/2nd wavelength plate 18; Closing look in color-combination prism 19 after, red, green, blue three coloured light are projected camera lens 20 projections, color display on screen.
Shown in Figure 5, be the typical scenario of another coloured light transformation system, comprise: the first optically-active plate 18.1, PBS11.1, the second optically-active plate 18.2, PBS11.2, the 3rd optically-active plate 18.3, PBS11.3, PBS11.4, first, second and third liquid crystal on silicon imager chip 12 are formed.Visible light from light source 100 is a P light, be imported in the first optically-active plate 18.1, first coloured light part is become S light by the optically-active an angle of 90 degrees, entered PBS18.3 by the PBS11.1 reflection, be reflected and be coupled to the first liquid crystal on silicon imager chip 12, by after the image modulation and become P light and reflect, then, see through PBS18.3, PBS18.4 respectively, enter projection lens 20 at last; Still do not entered the second optically-active plate 18.2 for P light transmission PBS11.1 by first, second look coloured light of the first optically-active plate optically-active, wherein, second coloured light part is become S light by the second optically-active plate, 11.2 optically-active an angle of 90 degrees, be coupled to the second liquid crystal on silicon imager chip 12 by the PBS11.2 reflection, by after the image modulation and become P light and reflect, and see through PBS11.2 and enter the 3rd optically-active plate 18.3, become S light by the 3rd optically-active plate 18.3 optically-active an angle of 90 degrees, then, reflected by PBS11.4, enter projection lens 20 at last; Be not the 3rd coloured light by the P light of the second optically-active plate, 18.2 optically-actives, see through the second optically-active plate 18.2, see through PBS11.2 and enter the 3rd liquid crystal on silicon imager chip 12, by after the image modulation and become S light and reflect, seen through the 3rd optically-active plate 18.3 by PBS11.2 reflection back, then, reflected by PBS11.4, three kinds of coloured light enter projection lens 20 projection imagings after closing look.
They are two years old, it is a kind of coloured light transformation system that utilizes dichroic spectro-film and total reflection prism to realize, utilize spectro-film to realize the beam split of red, green, blue three looks, and utilize air-gap to form total reflection and realize to couple light in the liquid crystal on silicon imager chip, reflected by former road by electronic image modulation back then, enter the camera lens Projection Display.Typical practical plan as shown in Figure 6.
Coloured light conversion portion shown in Figure 6 comprises PBS11, first prism 21, second prism 22, prism 23, first, second and third liquid crystal on silicon imager chip 12 compositions.First face of the left side of PBS11 and first prism 21 has an air-gap, the about 10nm of air-gap, with first the generation total reflection that makes light at first prism 21, same, second first face with second prism 22 at first prism 21 also has an air-gap, the about 10nm of air-gap is with first the generation total reflection that makes light at second prism 22.Illuminator 100 produces the S polarisation and is entered first prism 21 by the PBS11 reflection, because first prism, 21 second faces are coated with the anti-bluish-green film that is popular in, blue light and green glow see through, ruddiness is reflected, ruddiness arrives first of first prism 21, because incident angle is greater than Brewster angle, ruddiness is first total reflection, and the 3rd face that impinges perpendicularly on enters in the first liquid crystal on silicon imager chip 12, by after the image modulation and become P light and reflect, turn back to PBS11 along former road,, enter projection lens 20 projections so see through PBS11 because this moment, ruddiness became P light; Arrive second of second prism 22 at 21 second blue green lights that see through of first prism, the film because the anti-indigo plant that is coated with second prism, 22 second faces reveals the green, green glow sees through, blue light is reflected, blue light arrives first of second prism 22, because incident angle is greater than Brewster angle, blue light is first total reflection, and the 3rd face that impinges perpendicularly on enters in the second liquid crystal on silicon imager chip 12, by after the image modulation and become P light and reflect, turn back to PBS11 along former road,, enter projection lens 20 projections so see through PBS11 because this moment, blue light became P light; At 22 second green glows that see through of second prism, see through prism 23, and vertical incidence enters in the 3rd liquid crystal on silicon imager chip 12, by after the image modulation and become P light and reflect, turn back to PBS11 along former road, because this moment, green glow became P light, enter projection lens 20 projections so see through PBS11; The red, green, blue three-beam is projected camera lens 20 at last and projects and become coloured image on the screen.
They are three years old, be that a kind of input light that allows becomes the certain included angle oblique incidence with the normal of liquid crystal on silicon imager chip image planes, output light also becomes the certain included angle oblique fire to come out, and it is a kind of from shaft type light transformation system to utilize such principle to realize, but has many shortcomings, as system complex, structure is bigger, particularly adopts after axle construction, and astigmatism is bigger, and influential to polarization state of light, unpolarized attitude has appearred.This scheme adopts less at present.
Coloured light transformation system according to Fig. 4 and Fig. 5 scheme has many remodeling, and they have common feature, it is characterized in that: utilize PBS and 90 degree rotatory devices to cooperate separating, modulating of realization light and close look.But because the polarization field complex structure of system, the stress of element material can produce birefringent phenomenon, changes the polarization state of light beam, influences the raising of contrast; Particularly variation of temperature causes the thermal stress of element material to change, and particularly 90 degree rotatory devices are very responsive to temperature, and rotary light performance changes greatly, has influenced the steady operation of system.
Coloured light transformation system according to Fig. 6 scheme also has many remodeling, and they have common feature, it is characterized in that: utilize dichroic spectro-film and total reflection air-gap to cooperate to realize separating, modulating and closing look of light.But the structure of total reflection air-gap difficulty on making is bigger, should not make in batches; Simultaneously, the processing of rhombic prism has difficulties; Image device is oversize to the light path of projection lens in addition, to having relatively high expectations of projection lens, has increased projection lens manufacture difficulty and production cost.Industrialization is produced and is had certain difficulty.
At present, there is above-mentioned shortcoming in the liquid crystal on silicon light engine typical structure that these are known and practical, and use more optical element, and system complex, cost is higher, the efficiency of light energy utilization is lower, makes the production in enormous quantities of liquid crystal on silicon light engine and application have many difficulties.Therefore, the liquid crystal on silicon light engine of realization simple structure is very important objectives and tasks.
Voluntarily nearly 10 years patent is retrieved through us, also found no the liquid crystal on silicon light engine identical with the utility model.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming that the liquid crystal on silicon light engine exists in the prior art, removes an angle of 90 degrees rotatory device in the coloured light transformation system; Do not require yet and use the total reflection air-gap; Provide a kind of optical texture very simple, device is few, and luminous energy is fully utilized, and cost is low, is easy to make and be easy to the liquid crystal on silicon light engine of mass production.
Below the technical solution of the utility model is elaborated
The purpose of this utility model is achieved in that the liquid crystal on silicon light engine, includes housing, illuminator, coloured light transformation system, projection lens; Illuminator comprises bulb, the UV-IR optical filter, the polarizer, equal optical device, collimating apparatus, it is characterized in that: illuminator 100, the coloured light transformation system is arranged in the housing, projection lens 20 is installed in outside the housing, described coloured light transformation system includes photo-coupler 24, dichro iotac beam 26, three liquid crystal on silicon imager chips 12 are formed, the direction that photo-coupler 24 faces toward illuminator 100 is directly accepted the linear polarization white light 01 by illuminator 100 generations, and the two-beam that the linear polarization white light was orthogonal in 01 minute, be mounted with the first liquid crystal on silicon imager chip 12.1 and the 3rd liquid crystal on silicon imager chip 12.3 on this two-way beam direction separately, and it is vertical with optical axis, between photo-coupler 24 and liquid crystal on silicon imager chip, be placed with dichro iotac beam 26 on the road beam direction wherein, on the reflected light direction of dichro iotac beam 26, also be placed with the second liquid crystal on silicon imager chip 12.2, and vertical with this reflection optical axis; Described projection lens 20 is arranged on the external direction that other parts are not housed of photo-coupler 24; The first liquid crystal on silicon imager chip 12.1, the second liquid crystal on silicon imager chip 12.2 and the 3rd liquid crystal on silicon imager chip 12.3 are to the equivalent optical path of projection lens 20; Light beam that is returned by the first liquid crystal on silicon imager chip and the light beam that is returned by the second liquid crystal on silicon imager chip and the 3rd liquid crystal on silicon imager chip after 24 li of photo-couplers close look, enter camera lens 20 projection imagings.
Photo-coupler is directly accepted the linear polarization white light that generated by illuminator facing to the direction of illuminator, and the two-beam that linear polarization white light branch is orthogonal, and one road light beam is along the input light direction, and another light beam edge, road is perpendicular to the direction of importing the light optical axis; Described dichro iotac beam is arranged on the transmitted light beam direction, the light splitting surface of dichro iotac beam becomes 45 degree with the optical axis of this light beam, dichro iotac beam is divided into two-beam with the light beam that receives again, be respectively the light of two wave bands, one road light beam is along the transmission of input light direction, and another road light beam is along the direction reflection perpendicular to input light optical axis; The described first liquid crystal on silicon imager chip is arranged on the folded light beam direction of photo-coupler output beam, and vertical with the optical axis of this light beam; The first liquid crystal on silicon imager chip carries out image modulation to the light beam of this input, and with the polarization direction of light beam revolve turn 90 degrees after, it is reflected back along former road; This folded light beam has been the light with another polarized component, reenters photo-coupler, and owing to the former polarized component with light is a quadrature, the incorgruous polarization beam splitting deielectric-coating of photo-coupler is with the transmittance of this light beam; The described second liquid crystal on silicon imager chip is arranged on the folded light beam direction of dichro iotac beam, and vertical with the optical axis of this folded light beam; The second liquid crystal on silicon imager chip carries out image modulation to the light beam of being accepted, and with the polarization direction of this light beam revolve turn 90 degrees after, it is reflected back along former road, this light beam has been the light with another polarized component, reenter photo-coupler, owing to the former polarized component with light is a quadrature, the incorgruous polarization beam splitting deielectric-coating of photo-coupler is with the light reflection of this light beam; Described the 3rd liquid crystal on silicon imager chip is arranged on another road beam direction of dichro iotac beam, i.e. transmitted light direction, and vertical with the optical axis of light beam; The 3rd liquid crystal on silicon imager chip carries out image modulation to the light beam of input, and with the polarization direction of light beam revolve turn 90 degrees after, it is reflected back along former road, this light beam has been the light with another polarized component, reenter photo-coupler, owing to the former polarized component with light is a quadrature, the incorgruous polarization beam splitting deielectric-coating of photo-coupler is with the light reflection of light beam; Described projection lens is arranged on the external direction that other parts are not housed of photo-coupler; The first liquid crystal on silicon imager chip, the second liquid crystal on silicon imager chip and the 3rd liquid crystal on silicon imager chip are to the equivalent optical path of projection lens; Light beam by first, second, third liquid crystal on silicon imager chip returns respectively all after closing look in the photo-coupler, enters the camera lens projection imaging.
Popularizing and progress of photoelectron such as televisor, computing machine product, and people's widespread use in work and life, people have more or more and more frequent contacting with the screen of products such as televisor, computing machine, and advantage has obtained widespread use to Projection Display so that its little power consumption, radiation be little etc.Yet, at the liquid crystal on silicon light engine that is used for Projection Display owing to use more optical element, system complex, cost is higher, the efficiency of light energy utilization is lower, makes the production in enormous quantities of liquid crystal on silicon light engine and application have many difficulties, is restricting this development of technology.Therefore, the liquid crystal on silicon light engine of realization simple structure is a problem very anxious to be solved.The utility model does not need an angle of 90 degrees rotatory device, do not require yet and use the total reflection air-gap, simplify the structure, reduced light path and optical energy loss, solved effectively that this is restricting the brief structure of liquid crystal on silicon projection display system, improves the quality, efficient and the problem that reduces cost.Photo-coupler of the prior art only can be coupled to the light of a wave band, and the utility model has adopted the novel photo-coupler that can be coupled to the light of two wave bands, and designed light path at this point, in corresponding light path, the liquid crystal on silicon imager chip is set, dichro iotac beam and camera lens, constituted a kind of new liquid crystal on silicon light engine, not only structure is very simple, realizes that coupling efficiency improves.
Realization of the present utility model also is: the photo-coupler in the coloured light transformation system, to form by the incorgruous polarization beam splitter that optical glass workplace wherein is coated with, and incorgruous polarization beam splitter is made up of the multilevel oxide deielectric-coating; Polarization light-dividing surface becomes 45 degree with the optical axis of transmitted beam; Oxide dielectric film is by the titanium dioxide media coating, or the zirconia media rete, or the tantalum oxide dielectric rete, or the cerium oxide media coating, or the magnesium oxide media coating, or the silica medium rete combines in twos; Light with predetermined band enters this photo-coupler, and this light has first polarized component, and the light that is included in a certain wave band wherein is reflected, and the light of this predetermined band remainder is by transmission.
The photo-coupler that the incorgruous polarization beam splitter that is coated with by optical glass and its surface is formed, its incorgruous polarization beam splitter is made up of the multilevel oxide deielectric-coating; Polarization light-dividing surface becomes 45 degree with the optical axis of transmitted beam.Can bear the long-term irradiation of the light of broadband high light intensity, improve serviceable life, enlarge range of application, also make to make to be easy to realize, can produce the demand that satisfies market in large quantity.
General photo-coupler can only make a liquid crystal on silicon imager chip obtain coupling, and the utility model can be so that two liquid crystal on silicon imager chips obtain coupling.
Realization of the present utility model also is: the dichro iotac beam in the coloured light transformation system must be a unpolarized dichro iotac beam, promptly to all transmissions of light of a wave band random polarization component, the light of another wave band random polarization component is all reflected.
The design of the unpolarized technical characterictic of dichro iotac beam makes whole liquid crystal on silicon light engine.In conjunction with appropriate, one integrated mass is adjusted better and has been optimized light path, has guaranteed effective transmission of luminous energy, realized simple in structure, optical energy transmission efficiency height, the excellent results that device cost is low.
The photo-coupler of the utility model in the coloured light transformation system adopted the incorgruous polarization spectro rete that is coated with by optical glass and its workplace, and polarization light-dividing surface becomes 45 technical schemes of spending with the optical axis of transmitted beam, optimal design corresponding light path and device.Solve the liquid crystal on silicon light engine that is perplexing industry for a long time and used more optical element, system complex, cost is higher, the problem that the efficiency of light energy utilization is lower, a kind of a large amount of minimizing optical element is provided, and simple in structure, element is few and function is strong, improve the manufacturability of making, reduced cost effectively; Make structure simplify greatly, and improved the efficiency of light energy utilization effectively that brief practicality is easy to the liquid crystal on silicon light engine of volume production.
Description of drawings:
Fig. 1 is typical utility structure one synoptic diagram of illuminator;
Fig. 2 is typical utility structure two synoptic diagram of illuminator.
Fig. 3 is the fundamental diagram of polarizing beam splitter in the prior art.
Fig. 4 is typical liquid crystal on silicon light engine example one fundamental diagram in the prior art.
Fig. 5 is typical liquid crystal on silicon light engine example two fundamental diagrams in the prior art.
Fig. 6 is typical liquid crystal on silicon light engine example three fundamental diagrams in the prior art.
Fig. 7 is the principle of work synoptic diagram of the utility model photo-coupler.
Fig. 8 is the utility model embodiment 2 principle of work synoptic diagram.
Fig. 9 is the utility model liquid crystal on silicon light engine embodiment 3 fundamental diagrams.
Figure 10 is the utility model liquid crystal on silicon light engine embodiment 4 fundamental diagrams.
Figure 11 is the utility model liquid crystal on silicon light engine embodiment 5 fundamental diagrams.
Embodiment:
Embodiment 1: the principle of work of photo-coupler in the utility model coloured light transformation system
As shown in Figure 7, light 01 with predetermined band enters photo-coupler 24, this light has first polarized component, the light that is included in a certain wave band 04 wherein is reflected, the light 03 of this predetermined band 01 remainder is by transmission, direction at reflected light 04 and transmitted light 03 is equipped with a liquid crystal on silicon imager chip 12 respectively, and perpendicular to the optical axis of light beam, light vertically is input in the liquid crystal on silicon imager chip 12, by image modulation and an angle of 90 degrees optically-active, then, reenter photo-coupler 24 along the reflection of former road, because light becomes the light with former polarized component quadrature, the light 04 that is included in a certain wave band wherein is by transmission, and the light 03 of predetermined band remainder is reflected.So, can make the input light of two liquid crystal on silicon imager chips 12 and output light obtain coupling simultaneously.For example: light beam 01 is the light with first polarized component, wavelength coverage is 410nm～590nm, incide in the photo-coupler 24, photo-coupler 24 is to be formed by two right-angle prism gummeds in this example, form a regular hexahedron, be coated with incorgruous polarization beam splitting deielectric-coating 25 therein on the inclined-plane of a right-angle prism, this incorgruous polarization beam splitting deielectric-coating 25 will be about light 04 reflection of 500nm～590nm in the light beam 01, the direction of folded light beam becomes an angle of 90 degrees with optical axis, this reflected light 04 impinges perpendicularly in the liquid crystal on silicon imager chip 12, it carries out image modulation and an angle of 90 degrees optically-active with light beam 04, reflect along former road, light beam 04 has been to have second polarized component, wave band is about the light modulated of 500nm～590nm, reenter photo-coupler 24, because second polarized component of light and first polarized component of light are quadratures, the incorgruous polarization beam splitting deielectric-coating 25 of photo-coupler 24 is with the transmittance of light beam 04; The light 03 that is about 410nm～490nm in the light beam 01 is by incorgruous polarization beam splitting deielectric-coating 25 transmissions, impinge perpendicularly in the liquid crystal on silicon imager chip 12, it carries out image modulation and an angle of 90 degrees optically-active with light beam 03, and reflect along former road, light beam 03 has been to have the light modulated that second polarized component, wave band are about 410nm～490nm, reenter photo-coupler 24, because second polarized component of light and first polarized component of light are quadratures, the incorgruous polarization beam splitting deielectric-coating 25 of photo-coupler 24 is with the light reflection of light beam 03; Light beam 04 and light beam 03 are propagated forward along same direction.Photo-coupler 24 has not only been realized the input and output coupling of two liquid crystal on silicon imager chip 12 light, and, also realized the color separation of light and closed look above-mentioned that also is separating of a blue light and green glow, is carried out image modulation respectively, then, closes the process of look again.
Embodiment 2:
As shown in Figure 8, the utility model liquid crystal on silicon light engine, include housing, illuminator, the coloured light transformation system, projection lens, illuminator comprises bulb, the UV-IR optical filter, the polarizer, equal optical device, collimating apparatus is formed, it is characterized in that: illuminator 100, the coloured light transformation system is arranged in the housing, projection lens 20 is installed in outside the housing, described coloured light transformation system includes photo-coupler 24, dichro iotac beam 26, three liquid crystal on silicon imager chips 12 are formed, the direction that photo-coupler 24 faces toward illuminator 100 is directly accepted the linear polarization white light 01 by illuminator 100 generations, and the two-beam that the linear polarization white light was orthogonal in 01 minute, one road light beam 03 is along the input light direction, and another road light beam 04 is along the direction perpendicular to input light optical axis; Described dichro iotac beam 26 is arranged on light beam 03 direction, the light splitting surface of dichro iotac beam 26 becomes miter angle with the optical axis of light beam 03, dichro iotac beam 26 is divided into two- beam 05,06 with the light beam 03 that receives again, be respectively the light of two wave bands, light beam 05 is along the transmission of input light direction, and light beam 06 is along the direction reflection perpendicular to input light optical axis; The described first liquid crystal on silicon imager chip 12.1 is arranged on one road light beam, 04 direction of photo-coupler 24 outputs, and vertical with the optical axis of light beam 04; The light beam of 12.1 pairs of these inputs of the first liquid crystal on silicon imager chip carries out image modulation, and with the polarization direction of light beam revolve turn 90 degrees after, it is reflected back along former road; Light beam 04 has been the light with another polarized component, reenters photo-coupler 24, and owing to the former polarized component with light is a quadrature, the incorgruous polarization beam splitting deielectric-coating 25 of photo-coupler 24 is with the transmittance of light beam 04; The described second liquid crystal on silicon imager chip 12.2 is arranged on light beam 06 direction of dichro iotac beam 26, and vertical with the optical axis of light beam 06; 12.2 pairs of light beams of being accepted 06 of the second liquid crystal on silicon imager chip carry out image modulation, and with the polarization direction of this light beam revolve turn 90 degrees after, it is reflected back along former road; Light beam 06 has been the light with another polarized component, reenters photo-coupler 24, and owing to the former polarized component with light is a quadrature, the incorgruous polarization beam splitting deielectric-coating 25 of photo-coupler 24 is with the light reflection of light beam 06; Described the 3rd liquid crystal on silicon imager chip 12.3 is arranged on another road light beam 05 direction of dichro iotac beam 26, and vertical with the optical axis of light beam 05; The light beam 05 of 12.3 pairs of inputs of the 3rd liquid crystal on silicon imager chip carries out image modulation, and with the polarization direction of light beam revolve turn 90 degrees after, it is reflected back along former road; Light beam 05 has been the light with another polarized component, reenters photo-coupler 24, and owing to the former polarized component with light is a quadrature, the incorgruous polarization beam splitting deielectric-coating 25 of photo-coupler 24 is with the light reflection of light beam 05; Described projection lens 20 is arranged on the external direction that other parts are not housed of photo-coupler 24; The first liquid crystal on silicon imager chip 12.1, the second liquid crystal on silicon imager chip 12.2 and the 3rd liquid crystal on silicon imager chip 12.3 are to the equivalent optical path of projection lens 20; By the light beam 04 that the first liquid crystal on silicon imager chip returns, the light beam 05,06 by the second liquid crystal on silicon imager chip and the 3rd liquid crystal on silicon imager chip return after 24 li of photo-couplers close look, enters camera lens 20 projection imagings.
Embodiment 3:
As shown in Figure 9, the utility model liquid crystal on silicon light engine, include housing, illuminator, the coloured light transformation system, projection lens, illuminator comprises bulb, the UV-IR optical filter, the polarizer, equal optical device, collimating apparatus is formed, it is characterized in that: illuminator 100, the coloured light transformation system is arranged in the housing, projection lens 20 is installed in outside the housing, described coloured light transformation system includes photo-coupler 24, dichro iotac beam 26, three liquid crystal on silicon imager chips 12 are formed, the direction that photo-coupler 24 faces toward illuminator 100 is directly accepted the linear polarization white light 01 by illuminator 100 generations, and the two-beam that the linear polarization white light was orthogonal in 01 minute, one road light beam 07 is along the input light direction, and another road light beam 08 is along the direction perpendicular to input light optical axis; Described dichro iotac beam 26 is arranged on light beam 08 direction, the light splitting surface of dichro iotac beam 26 becomes miter angle with the optical axis of light beam 08, dichro iotac beam 26 is divided into two-beam 09,010 with the light beam 08 that receives again, be respectively the light of two wave bands, light beam 010 is along the transmission of input light direction, and light beam 09 is along the direction reflection perpendicular to input light optical axis; The described first liquid crystal on silicon imager chip 12.1 is arranged on one road light beam, 07 direction of photo-coupler 24 outputs, and vertical with the optical axis of light beam 07; The light beam of 12.1 pairs of these inputs of the first liquid crystal on silicon imager chip carries out image modulation, and with the polarization direction of light beam revolve turn 90 degrees after, it is reflected back along former road; Light beam 07 has been the light with another polarized component, reenters photo-coupler 24, and owing to the former polarized component with light is a quadrature, the incorgruous polarization beam splitting deielectric-coating 25 of photo-coupler 24 is with the light reflection of light beam 07; The described second liquid crystal on silicon imager chip 12.2 is arranged on light beam 09 direction of dichro iotac beam 26, and vertical with the optical axis of light beam 09; 12.2 pairs of light beams of being accepted 09 of the second liquid crystal on silicon imager chip carry out image modulation, and with the polarization direction of this light beam revolve turn 90 degrees after, it is reflected back along former road; Light beam 09 has been the light with another polarized component, reenters photo-coupler 24, and owing to the former polarized component with light is a quadrature, the incorgruous polarization beam splitting deielectric-coating 25 of photo-coupler 24 is with the transmittance of light beam 09; Described the 3rd liquid crystal on silicon imager chip 12.3 is arranged on another road light beam 010 direction of dichro iotac beam 26, and vertical with the optical axis of light beam 010; The light beam 010 of 12.3 pairs of inputs of the 3rd liquid crystal on silicon imager chip carries out image modulation, and with the polarization direction of light beam revolve turn 90 degrees after, it is reflected back along former road; Light beam 010 has been the light with another polarized component, reenters photo-coupler 24, and owing to the former polarized component with light is a quadrature, the incorgruous polarization beam splitting deielectric-coating 25 of photo-coupler 24 is with the transmittance of light beam 010; Described projection lens 20 is arranged on the external direction that other parts are not housed of photo-coupler 24; The first liquid crystal on silicon imager chip 12.1, the second liquid crystal on silicon imager chip 12.2 and the 3rd liquid crystal on silicon imager chip 12.3 are to the equivalent optical path of projection lens 20; By the light beam 07 that the first liquid crystal on silicon imager chip returns, the light beam 09,010 by the second liquid crystal on silicon imager chip and the 3rd liquid crystal on silicon imager chip return after 24 li of photo-couplers close look, enters camera lens 20 projection imagings.
Embodiment 4:
The liquid crystal on silicon light engine, as shown in figure 10: comprise housing and be arranged on illuminator, the coloured light transformation system in the housing and be installed in the outer projection lens of housing.
The coloured light transformation system comprises that photo-coupler 24, dichro iotac beam 26, the first liquid crystal on silicon imager chip 12.1, the second liquid crystal on silicon imager chip 12.2, the 3rd liquid crystal on silicon imager chip 12.3 and compensating prism 27 constitute.
The white light that photo-coupler 24 receives from light source 100, the hexahedron that photo-coupler 24 is made up of two right-angle prisms is made, and is coated with incorgruous polarization beam splitter on the diagonal line inclined-plane; Photo-coupler 24 opposite sides are equipped with dichro iotac beam 26, and the positive hexahedron that dichro iotac beam 26 is made up of two right-angle prisms is made, and are coated with the unpolarized spectro-film of dichroic on the inclined-plane, form dichro iotac beam; Produce a catoptrical side at photo-coupler 24 compensating prism 27 is housed, compensating prism 27 outsides are equipped with the first liquid crystal on silicon imager chip 12.1 opposite side opposite with it projection lens 20 are housed; Produce a catoptrical side in dichro iotac beam 26 the second liquid crystal on silicon imager chip 12.2 is housed, produce a side that sees through light in dichro iotac beam 26 the 3rd liquid crystal on silicon imager chip 12.3 is housed; The first liquid crystal on silicon imager chip 12.1, the second liquid crystal on silicon imager chip 12.2, the 3rd liquid crystal on silicon imager chip 12.3 arrive the equivalent optical path of projection lens 20.The increase of compensating prism 27 is optical path compensations.
Embodiment 5:
As shown in figure 11, totally constitute with embodiment 4, just variation has taken place in the position of dichro iotac beam 26 and compensating prism 27, be compensating prism 27 input optical transmission light directions, dichro iotac beam 26 is in input reflection of light light direction, light beam by first, second, third liquid crystal on silicon imager chip returns respectively all after 24 li of photo-couplers close look, enters camera lens 20 projection imagings.
This is the utility model embodiment three, and the utility model three-chip type liquid crystal on silicon light engine comprises housing and is arranged on illuminator, the coloured light converting system in the housing and is installed in the outer projection lens of housing.
Illuminator comprises ultrahigh pressure mercury lamp 1, UV-IR optical filter 2, the polarizer 3, all optical wand 4, first lens 5, second lens 6 are formed; Wherein first lens 5 and second lens 6 constitute the beam-expanding collimation device.
The coloured light converting system comprises photo-coupler 7, dichro iotac beam 8, compensating prism 13, the first liquid crystal on silicon imager chip 9, the second liquid crystal on silicon imager chip 10, the 3rd liquid crystal on silicon imager chip 11.
Photo-coupler 7 is connected a side of the light output of beam-expanding collimation device second lens 6; The square that photo-coupler 7 is made up of two right-angle prisms is made, and is coated with incorgruous polarization beam splitter on the inclined-plane; Photo-coupler 7 opposite sides are equipped with dichro iotac beam 8, and the square that dichro iotac beam 8 is made up of two right-angle prisms is made, and are coated with the unpolarized spectro-film of dichroic on the inclined-plane; Produce a catoptrical side at photo-coupler 7 compensating prism 13 is housed, compensating prism 13 outsides are equipped with the first liquid crystal on silicon imager chip 9 opposite side opposite with it projection lens 12 are housed; Produce a catoptrical side in dichro iotac beam 8 the second liquid crystal on silicon imager chip 10 is housed, produce a side that sees through light in dichro iotac beam 8 the 3rd liquid crystal on silicon imager chip 11 is housed; The first liquid crystal on silicon imager chip 9, the second liquid crystal on silicon imager chip 10, the 3rd liquid crystal on silicon imager chip 11 arrive the equivalent optical path of projection lens 12.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520106019 CN2881677Y (en) | 2005-12-31 | 2005-12-31 | Liquid crystal on silicon optical engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520106019 CN2881677Y (en) | 2005-12-31 | 2005-12-31 | Liquid crystal on silicon optical engine |
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| CN2881677Y true CN2881677Y (en) | 2007-03-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101930126A (en) * | 2009-06-23 | 2010-12-29 | 江苏丽恒电子有限公司 | Integrated single sided board projection engine |
| CN101943843A (en) * | 2009-05-22 | 2011-01-12 | 上海丽恒光微电子科技有限公司 | Integrated micro Display projector and imaging system |
| CN110537119A (en) * | 2017-05-25 | 2019-12-03 | 富士胶片株式会社 | Color separation optical system, imaging unit, and imaging device |
-
2005
- 2005-12-31 CN CN 200520106019 patent/CN2881677Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943843A (en) * | 2009-05-22 | 2011-01-12 | 上海丽恒光微电子科技有限公司 | Integrated micro Display projector and imaging system |
| CN101943843B (en) * | 2009-05-22 | 2012-03-07 | 上海丽恒光微电子科技有限公司 | Integrated microdisplay projection and imaging system |
| CN101930126A (en) * | 2009-06-23 | 2010-12-29 | 江苏丽恒电子有限公司 | Integrated single sided board projection engine |
| CN101930126B (en) * | 2009-06-23 | 2012-06-06 | 上海丽恒光微电子科技有限公司 | Integrated single sided board projection engine |
| CN110537119A (en) * | 2017-05-25 | 2019-12-03 | 富士胶片株式会社 | Color separation optical system, imaging unit, and imaging device |
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