CN1071460C - Data copying machine for camera use - Google Patents

Abstract

The liquid crystal display device 10a of the data writing device 10 for a camera provided by the present invention has a liquid crystal element as a light-transmitting part for forming a data pattern written in a photographic film by virtue of the alignment state of a liquid crystal agent sealed between a pair of electrode substrates 171 and 172. 17. An incident-side polarizing plate 18 is arranged on the incident side, and an outgoing-side polarizing plate 19 is arranged on the outgoing side of the liquid crystal element. The position on the exit side of the liquid crystal element 17, for example, between the liquid crystal element and the exit side polarizer, on the position on the exit side of the exit side polarizer, in the area overlapping with the formation area of the data pattern of the liquid crystal element 17, a light-transmitting portion is formed. 21 of the light-shielding mask 20 .

Description

Data writing device for camera

The present invention relates to a data writing device for a camera for writing a data image formed by a liquid crystal element into a photographic film. More specifically, the present invention relates to a mechanism for making the written data image clearer in the data writing device.

In the camera, in order to write data such as year, month, day and other data into the photographic film, as shown in Figure 19 (a) type, there is a liquid crystal element by sealing a liquid crystal material between a pair of electrode substrates, as the The data pattern is written on the light-transmitting portion of the photographic film F. The light emitted from the light source 102 is guided into the liquid crystal element 101 by the reflector 103 , and the excess light is blocked by the liquid crystal unit 101 , and then introduced into the photographic film through the lens 104 and the reflector 105 . Thus, a data image corresponding to the data pattern is written on the photographic film.

It is not enough to shield light only by the liquid crystal cell 101, therefore, the outline of the data image written on the photographic film F becomes unclear. In order to avoid this problem, a light shielding mask has been arranged between the light source 102 and the liquid crystal cell 101, to block excess light. As shown in Figure 19 (b), the light-shielding mask 106 forms a light-transmitting part 108 in the overlapping area with the section 107 forming the data pattern, and the structure of the light-shielding mask 106 forming a light-shielding part 109 is arranged around it, so that the irradiation Unwanted light from incoming light to the liquid crystal element 101 is blocked.

The light-shielding mask 106 that has been used uses a film-forming method such as electroplating or vapor deposition to form a metal film on a substrate according to a certain pattern, and the part without the metal film is used as the light-transmitting part 108 .

In the conventional data writing device for a camera, the light shielding mask 106 can block unnecessary light entering other than the liquid crystal element 101 . However, after passing through the light-shielding mask 106, when the light passes through the liquid crystal element 101, light diffusion still occurs, so the blurring of the data image caused by this diffusion cannot be eliminated.

In addition, if the light-transmitting portion 108 of the light-shielding mask 106 is not correctly arranged at a predetermined position with respect to the segment display portion for forming a data pattern of the liquid crystal element, the written data image becomes unclear.

In addition, it is natural that the light-shielding mask 106 can be easily manufactured by an inexpensive method.

The object of the present invention is to provide a data writing device for a camera which improves the arrangement position of a light-shielding mask and makes the outline of an image written on a photographic film clearer.

Another object of the present invention is to provide a data writing device for a camera that can obtain an image outline that can be clearly written on a photographic film by accurately specifying the position of a light-shielding mask for a liquid crystal cell.

Furthermore, the object of the present invention is to provide a suitable method for manufacturing a data writing device for a camera equipped with a light-shielding mask.

In order to solve the above-mentioned problems, according to a data writing device for a camera of the present invention, the data writing device has a light source, and guides light emitted from the light source into an optical path arranged on the photo film surface of the photo film arrangement surface, and is arranged on the photo film arrangement surface. On the optical path, a liquid crystal element that forms a data pattern written in the photo film as a light-transmitting portion according to the alignment state of the liquid crystal agent sealed between the pair of electrode substrates is arranged on the optical path closer to the light source side than the liquid crystal cell. an incident-side polarizing plate and an outgoing-side polarizing plate arranged on an optical path closer to the photographic film arrangement side than the liquid crystal cell,

It is characterized in that, on the optical path closer to the above-mentioned photographic film arrangement surface side than the above-mentioned liquid crystal element, a light-shielding mask that becomes a light-transmitting portion in an overlapping region with the formation region of the above-mentioned data pattern is arranged;

The above-mentioned light-shielding mask is arranged on the side closer to the above-mentioned photographic film arrangement surface than the above-mentioned exit-side polarizing plate;

The above-mentioned light-shielding mask and the above-mentioned exit-side polarizing plate are fixed by an adhesive layer disposed between the opposing surfaces thereof.

The light-shielding mask may be disposed closer to the photographic film placement surface than the exit-side polarizing plate, and may be disposed between the liquid crystal element and the exit-side polarizing plate.

According to this configuration, unlike the case where a light-shielding mask is disposed between the light source and the liquid crystal element, the light emitted from the liquid crystal element through the light-shielding mask becomes light irradiated on the photographic film. Therefore, excess light from the light passing through the liquid crystal element can be surely blocked, so that the outline of the image written on the photographic film can be made clearer.

On the one hand, according to the present invention, an alignment mark is formed on the electrode substrate of the liquid crystal element, and an alignment light-transmitting portion is formed on the light-shielding mask at a position corresponding to the alignment mark.

Here, it is desirable to form the light-transmitting portion for alignment in a region that is not irradiated with light from the light source of the light-shielding mask.

According to this structure, the positions of the data pattern formation region of the liquid crystal element and the light-transmitting portion of the light-shielding mask can be determined simply and accurately. Thus, a high-definition data written image can be obtained.

Next, in the present invention, a structure is adopted in which the above-mentioned light-shielding mask and the above-mentioned output-side polarizing plate are fixed by an adhesive layer disposed between the opposing surfaces thereof. Fixing can be performed, for example, by means of a thermosetting adhesive layer. In this case, by avoiding the light-transmitting portion and forming the adhesive layer around it, hazards such as light diffusion through the adhesive layer can be avoided, and a clear data writing image can be obtained.

In addition, while avoiding the above-mentioned light-transmitting portion and surrounding it, and disposing it in a closed shape, it is desirable that at least a part of the adhesive layer in the closed shape is completely interrupted. of. In this way, air bubbles or the like are enclosed in the portion surrounded by the adhesive layer, which diffuses light passing through the portion and degrades the definition of the written image.

Here, the above-mentioned light-shielding mask, the above-mentioned exit-side polarizing plate, and the above-mentioned liquid crystal element are stacked and fixed with an adhesive layer disposed between their facing surfaces, and the exit-side polarizing plate and the above-mentioned exit-side polarizing plate are laminated and fixed. It is desirable that the light-shielding masks are fixed to the surface of the above-mentioned liquid crystal cell with an adhesive for at least a part of their peripheral side surfaces. In this case, it is desirable to use a photosensitive adhesive that hardens by exposure, particularly an ultraviolet curable adhesive, as the adhesive. According to this structure, since the light-shielding mask and the liquid crystal element are firmly fixed without sliding relative to each other, they can be kept in a predetermined position. Therefore, a high-definition written image can be obtained.

It is also possible to distribute the adhesive between the opposing surfaces of the output-side polarizing plate and the light-shielding mask instead of being disposed on the outer peripheral side to securely fix them to each other.

In this case, it is desirable to easily perform exposure curing of the ultraviolet curable adhesive sandwiched between the output-side polarizing plate and the light-shielding mask, and it is desirable to arrange the above-mentioned ultraviolet curable adhesive on the above-mentioned light-shielding mask. The position forms a light-transmitting portion for curing the adhesive. In addition, it is desirable that such a light-transmitting portion be formed at a position avoiding the light-transmitting portion formed in a region overlapping with the formation region of the data pattern.

Next, in the present invention, as a light-shielding mask, it is made into a structure having a transparent substrate and a mask layer formed on the surface of the substrate, and the mask layer can be formed on the surface of the substrate by photolithography. The light-shielding emulsion layer of the light-transmitting part is formed.

The light-shielding mask is composed of a transparent substrate and a mask layer formed on the surface of the substrate, and the mask layer can be partially removed by photolithography. A portion of the surface of the base for transfer corresponding to the light-transmitting portion from which the emulsion layer has been removed is formed by re-transferring the portion from the base for transfer to the base.

Also, a light-shielding mask may be formed by a transparent substrate and a mask layer formed on the surface of the substrate, and the mask layer is formed by exposing a gel-like photosensitive emulsion layer also formed on the surface of the above-mentioned substrate. A mask layer having the above-mentioned light-transmitting portion and the above-mentioned light-shielding portion is formed.

The light-shielding mask having the above-mentioned configuration can be manufactured at low cost because it does not undergo an expensive film forming step such as plating or vapor deposition.

Here, the output-side polarizing plate can also be used instead of the transparent substrate, and a light-shielding mask can be directly formed on its surface. In this case, a light-shielding mask can be formed on the surface of the outgoing polarizer by the same method as the above-mentioned methods. That is, a light-shielding mask can be formed from a light-shielding emulsion layer forming a light-transmitting portion by photolithography. In addition, it is also possible to partially remove the photosensitive emulsion layer similarly formed on the surface of the base material for reproduction by photolithography, leaving a portion where the emulsion layer of the surface of the base material for replication corresponding to the above-mentioned light-transmitting portion is removed, and by applying the A light-shielding mask is formed by partially replicating on the above-mentioned exit-side polarizing plate made of the above-mentioned replication base material, or the gel-like photosensitive emulsion layer formed on the surface of the above-mentioned exit-side polarizing plate in the same manner can be exposed to form The above-mentioned light-transmitting part and the above-mentioned light-shielding part make a light-shielding mask.

Fig. 1 is a schematic plan view of main parts schematically showing a data writing device for a camera according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view schematically showing a main part of the data writing device for a camera shown in Fig. 1 .

3 is an exploded perspective view showing the arrangement relationship of a light-shielding mask in a liquid crystal display device of the data writing device for a camera shown in FIG.

4 is a view showing a liquid crystal display device of the data writing device for a camera shown in FIG. 1, wherein (a) is an explanatory view of its laminated structure, and (b) is a schematic cross-sectional view thereof.

FIG. 5 is an explanatory diagram of the light-shielding mask shown in FIG. 3, the liquid crystal element, its positional combination method and other positional combination methods.

FIG. 6 is an explanatory diagram showing each step of a method of manufacturing a light-shielding mask used in a liquid crystal display device of the data writing device for a camera shown in FIG. 1 .

FIG. 7 is an explanatory diagram showing steps of another method of manufacturing a light-shielding mask used in a liquid crystal display device of the data writing device for a camera shown in FIG. 1. FIG.

FIG. 8 is an explanatory diagram showing steps of still another method of manufacturing a light-shielding mask for a liquid crystal display device of the data writing device for a camera shown in FIG. 1 .

FIG. 9 is a schematic cross-sectional view showing a modification example of a possible liquid crystal display device to which the present invention is applied.

FIG. 10 is an explanatory view showing an adhesive layer forming region for bonding the output-side polarizing plate and the light-shielding mask in the liquid crystal display device shown in FIG. 9 .

Fig. 11 is a schematic cross-sectional view showing a modified example of a liquid crystal display device to which the present invention can be applied.

Fig. 12 is a schematic cross-sectional view showing a modified example of a liquid crystal display device to which the present invention can be applied.

Fig. 13 is a schematic cross-sectional view showing a modified example of a liquid crystal display device to which the present invention can be applied.

Fig. 14 is an explanatory diagram showing steps of another manufacturing method of a light-shielding mask used in a liquid crystal display device of the data writing device for a camera shown in Fig. 13 .

FIG. 15 is an explanatory diagram showing steps of another manufacturing method of a light-shielding mask used in a liquid crystal display device of the data writing device for a camera shown in FIG. 13 .

FIG. 16 is an explanatory diagram showing steps of still another method of manufacturing a light-shielding mask used in a liquid crystal display device of the data writing device for a camera shown in FIG. 13 .

Fig. 17 is a view showing a modified example of a liquid crystal display device to which the present invention may be applied, wherein (a) is a schematic plan view thereof, and (b) is a schematic cross-sectional view thereof.

18 is a view showing a modification example of a liquid crystal display device to which the present invention may be applied. (a) is an explanatory view for explaining its cross-sectional structure, and (b) is an explanatory view showing an adhesive layer forming region for fixing a light-shielding mask and An explanatory diagram of the arrangement position of the UV-curable adhesive.

Fig. 19 is a schematic explanatory diagram showing a conventional data writing device for a camera.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic plan view of main parts of a data writing device of this embodiment which is modularly mounted inside a camera body, and FIG. 2 is a partial schematic cross-sectional view taken along line II-II.

As shown in FIG. 1, the data writing device 10 of the present embodiment is equipped with a frame body 11, in which a circuit board is arranged, and a quartz vibrator 121, an IC 122 for driving a liquid crystal element, a lamp (light source) 13, and a monitor are installed. The components are composed of a liquid crystal display panel 125 and the like. In addition, an optical path 14 of light emitted from the lamp 13 is formed.

As shown in FIG. 2 , the optical path 14 is arranged so that the light emitted from the bulb 13 propagates along the bottom surface of the housing 11 . On the tip side of the optical path 14, a reflector 15 inclined at 45° with respect to the optical axis of the bulb 13 is arranged. In addition, directly below the reflection mirror 15, a light-shielding plate 16 formed with a window 161 through which light from the reflection mirror 15 can pass is arranged. A liquid crystal display device 10a for data writing means is formed opposite to the light-shielding plate 16, and a film arrangement surface through which the photographic film F passes is formed at the position below it. In addition, the connector 162 for electric conduction is arrange|positioned at the side of the light shielding plate 16 etc. side.

The liquid crystal display device 10a is mainly composed of a liquid crystal element 17 in which a liquid crystal agent (not shown) is sealed between a pair of electrode substrates 171 and 172, and is arranged on the side near the light source relative to the liquid crystal element 17, that is, the bulb 13 and the reflector 15 side. An incident-side polarizing plate 18 and an exiting-side polarizing plate 19 disposed on the side of the liquid crystal element 17 close to the photographic film F are formed. The liquid crystal element 17 forms a light-transmitting portion as a data pattern written on the photo film F according to the alignment state of the liquid crystal agent.

In this embodiment, a light-shielding mask 20 having a thickness of about 175 μm is laminated on the surface of the output-side polarizing plate 19 on the lower side of the photographic film.

FIG. 3 is a diagram showing the arrangement relationship of the light-shielding mask 20 , the output-side polarizing plate 19 , the liquid crystal element 17 , the incident-side polarizing plate 18 , and the light-shielding plate 16 .

As shown in the figure, on the light-shielding mask 20, a light-transmitting portion 21 is formed in a region overlapping with the data pattern formation region formed by the liquid crystal element 17. As shown in FIG. That is to say, the liquid crystal element 17 has 7 segment display sections formed as light-transmitting parts (data graphics) with the numbers-characters formed by 7 segments 170, such as 6 digits, and by the display section of these 6 digits, display Date and time of issue. The area other than the light-transmitting portion becomes a light-shielding portion for blocking light from the bulb 13 . The light-shielding mask 20 forms the light-transmitting portion 21 so as to overlap each segment 170 of the liquid crystal element 17 , and the other portion becomes the light-shielding portion 22 . In FIG. 3 , the light-transmitting portion 21 is indicated by a blank area, and the light-shielding portion 22 is indicated by a hatched area.

In the liquid crystal display device 10a of this configuration, as shown in FIG. 4, each component is fixed with an adhesive layer. That is, an adhesive layer 31 is coated on the surface of the light-shielding mask 20 side of the exit-side polarizing plate 19 with the same thickness, and by means of the adhesive layer 31, the light-shielding mask 20 and the exit-side polarizing plate 19 are bonded together. fit. While making the positions of the segment 170 of the liquid crystal cell 17 and the light-transmitting portion 21 of the light-shielding mask 20 overlap, they are laminated by means of the adhesive layer 31a disposed between the exit-side polarizer 19 and the opposite surface of the liquid crystal cell 17. layer fixed. Likewise, the lamination is fixed by means of the adhesive layer 31b disposed between the incident-side polarizing plate 18 and the opposing surface of the liquid crystal cell 17. In this way, a liquid crystal display device 10a as a laminate shown in FIG. 4(b) was obtained. As the adhesive layer, a thermosetting adhesive can be used.

Here, it should be known from FIG. 3 that in order to make the alignment accuracy high in the above-mentioned stacking step, in this embodiment, in the electrode substrates 171 and 172 of the liquid crystal unit 17, a circular or quadrangular light-transmitting alignment The approval mark 176 is formed at the non-electrode formation region. On the light-shielding mask 20 side, at a position superimposed on the alignment mark 176, an alignment translucent portion 200 having a shape corresponding to the mark is formed. Therefore, the liquid crystal cell 17 and the light-shielding mask 20 can be aligned with high precision by simply superimposing them while calculating the center positions of the alignment marks 176 and the alignment translucent portion 200 by an image processing device. In addition, since the mark 176 for alignment is formed in the non-formation region as the electrode pattern, the mark 176 for alignment can be made at the same time when forming the wiring portion to the electrode substrate 172, etc. step.

The alignment marks 176 are formed on both longitudinal end surfaces of the liquid crystal cell 17 at a large distance from the region where the segments 170 are formed. Therefore, the formation positions of the alignment mark 176 and the alignment light-transmitting portion 200 are shielded by the light-shielding plate 16 and cannot be illuminated by light. Therefore, even if the light-transmitting portion 200 for alignment is formed in the light-shielding mask 20, the image of the light-transmitting portion 200 for alignment will not be written on the photo film F due to light leakage therefrom.

Fig. 5 is another example showing the alignment direction. As shown in these figures, in the electrode substrates 171 and 172 of the liquid crystal element 17, a rectangular alignment window 176a having light transmission property is formed, which becomes a non-electrode formation region. In this region, light-shielding alignment marks 176b are formed according to the electrical level pattern. On the other hand, in the light-shielding mask 20, a circular alignment window 200a larger than the alignment mark 176b is formed as a light-transmitting region at a position overlapping the alignment mark 176b. At this side position, a small light-transmitting portion 200b for alignment is also formed.

When laminating the liquid crystal element 17 and the light-shielding mask, as shown in FIG. While superimposing the relative positions of the light-shielding mask 20 and the light-transmitting portion 200b for alignment detected at the position 3, the center positions thereof are calculated by image processing.

In the data writing device 10 constituted in this way, if the data pattern formed and written in the photo film F is regarded as the light-transmitting part on the liquid crystal element 17, then the light from the bulb 13 is first blocked by the liquid crystal element 17 as unnecessary light, from The light emitted from the liquid crystal element 17 is data light corresponding to the data pattern. As a result, a data image corresponding to the data pattern is written on the photographic film. Here, only the liquid crystal element 17 is used to shield the light, and some excess light will pass through. However, for this embodiment, since the light-shielding mask 20 is disposed between the liquid crystal element 17 and the photographic film F, the excess light passing through the liquid crystal element 17 is still blocked by the light-shielding portion 22 of the light-shielding mask.

In addition, in this embodiment, if the light-shielding mask 20 is positioned closer to the photo film F side between the liquid crystal cell 17 and the photo film F, the polarizing plate 19 is arranged on the photo film F side with respect to the output side. Therefore, even if the light diffuses when the light passes through the liquid crystal element or the output-side polarizing plate 19, the excess light is surely blocked and does not reach the photo film F side. Therefore, the outline of the data image written on the photographic film becomes clear.

Furthermore, for this embodiment, the light-shielding mask 20 is not directly attached to the surface of the liquid crystal element 17, but the output-side polarizer 19 is interposed therebetween. Therefore, even if a defective product is caused by misalignment of the position of the light-shielding mask for the liquid crystal element 17, the output-side polarizing plate 19 and the light-shielding mask 20 can be peeled off and the position can be adjusted without discarding the expensive liquid crystal element 17.

In addition, for this embodiment, although the exit-side polarizer 19 and the light-shielding mask 20 are arranged in a manner of being completely attached, it is also possible to adopt a positional superimposition structure using a spacer and separate a certain gap to arrange the exit-side polarizer. 19 and a light-shielding mask 20 . If this structure is adopted, the light-shielding mask 20 is brought closer to the photo film F side.

Next, a method of manufacturing the above-mentioned light-shielding mask 20 will be described with reference to FIGS. 6 , 7 and 8 .

Regarding the method shown in Figure 6 (a)-(c), at first, as shown in Figure 6 (a), a photosensitive emulsion layer 23b is formed on the surface of a transparent substrate 23a such as a polyethylene phthalate film. Next, as shown in FIG. 6(b), a mask 23c of a predetermined pattern is superimposed on the surface side of the emulsion layer 23b and exposed. Subsequently, the photosensitive emulsion layer will be developed with an etching solution to remove the photosensitive emulsion layer 23b of the unexposed part, as shown in Figure 6 (c), the photosensitive emulsion layer 23d of the exposed part will remain on the substrate 23a as a masking layer. As a result, on the transparent substrate 23a, the light-shielding emulsion layer 23d patterned by photolithography becomes the light-shielding portion 22, and the portion except the emulsion layer 23b is used as the light-transmitting portion 21 to form a mask layer. In this way, the light-shielding mask 20 is produced.

Regarding the method shown in FIGS. 7(a) to 7(b), first, as shown in FIG. 7(a), a photosensitive emulsion layer 24b is formed on the surface of the base sheet 24a for transfer. Next, as shown in FIG. 7(b), a predetermined pattern mask 24c is superimposed on the surface side of the emulsion layer 24b, and exposure is performed. Next, as shown in Fig. 7(c), the emulsion layer is developed with an etching liquid. As a result, the unexposed portion of the emulsion layer 24b is removed, while the exposed portion of the emulsion layer 24d remains on the transfer substrate sheet 24a. Next, as shown in FIG. 7(d), the transfer base sheet 24a and the transparent base sheet 24e are laminated while applying pressure to sandwich the emulsion layer. Thereafter, when the base sheet 24a for transfer is peeled off, the emulsion layer 24d is transferred on the side of the base sheet 24e to become a mask layer. At this time, the part where the photosensitive emulsion layer 24d is copied is the light shielding part 22 , and the part without the photosensitive emulsion layer is the light transmitting part 21 . In this way, the substrate sheet 24a for replication should have unevenness on its surface in order to increase the adhesive strength of the emulsion. If it is used as a mask as it is, there will be some light diffusion, but the surface of the substrate 24e is smooth. , which prevents the phenomenon of diffusion and obtains excellent writing effect. Also, when manufacturing the light-shielding mask 20 as shown in FIGS. 6 and 7, as to the kind of emulsion layer, a positive-type emulsion layer may be used instead of a negative-type emulsion layer.

The method shown in FIG. 8(a), (b) is a gel masking method. As shown in FIG. 8(a), first, a gel-like emulsion layer 25b is formed on the surface of a transparent substrate 25a. Next, as shown in FIG. 8(b), a predetermined pattern mask 25c is superimposed on the surface side of the gel-like emulsion layer 25b and exposed. As a result, in the gel-like emulsion layer 25b, the exposed portion becomes transparent to become the light-transmitting portion 21, and a mask layer in which the unexposed portion becomes the light-shielding portion 22 is obtained. According to this method, since the surface is flatter than the case of patterning, uneven thermal expansion is less likely to occur, and the surface is less likely to be damaged by collision and peeling off. In addition, since there is no unevenness, no air bubbles stagnate in the concave portion, and damage such as scattering of light passing there will not occur. Also, it is possible to use a gel-like photosensitive emulsion layer in which the photosensitive part turns black to become a light-shielding part, and the unsensitized part becomes a transparent part.

In this way, with any of the methods shown in FIGS. 6 to 8 , since expensive film-forming steps such as electroplating or vapor deposition are not necessary, the light-shielding mask 20 can be manufactured at low cost.

FIG. 9 shows another example of the liquid crystal display device 10 . This example has a configuration in which the adhesive application area is improved when the light-shielding mask is bonded with an adhesive on the photographic film side surface of the exit-side polarizing plate. In addition, since the basic structure of this example and each example described below is the same as that of the above-mentioned embodiment, the same code|symbol is attached|subjected to the common part, and the detailed description is abbreviate|omitted.

The liquid crystal display device 10a shown in FIG. The exit-side polarizing plate 19 disposed on the photographic film F side is stacked. The light-shielding mask 20 is attached to the photo film F side surface of the output-side polarizing plate 19 by means of, for example, a thermosetting adhesive layer 30 .

Although in the present embodiment, the liquid crystal element 17 is as described with reference to FIG. The light-transmitting portion 21 is formed. In this embodiment, as the light-shielding mask 20, for example, as described with reference to FIG. Layer 23d consists of a mask layer. In addition, the light-shielding mask 20 described with reference to FIG. 7 or FIG. 8 may also be used.

When sticking this light-transmitting mask 20 to the surface of the photographic film F side positioned at the exit-side polarizing plate 19, for this embodiment, as shown in FIG. The photosensitive emulsion layer 23d side faces the output-side polarizing plate 19, and the base sheet 23a is pasted toward the photo film F side. Therefore, since the photosensitive emulsion layer is protected by the substrate 23a, the photosensitive emulsion layer 23d is not easily damaged during the assembly process of the data writing device.

In addition, since the light-shielding mask 20 is not directly bonded to the liquid crystal element 17, even if there is a defective product that is displaced due to the position of the light-shielding mask to the liquid crystal cell 17, the light-shielding plate 19 on the exit side can be peeled off from the light-shielding mask 20, and then adjusted. Its location makes it unnecessary to discard the expensive liquid crystal cell 17 .

Here, in this embodiment, as shown in FIG. 10( a ), the adhesive layer 30 is made into a closed rectangular frame shape surrounding the region 210 where the light-transmitting portion 21 is formed. Therefore, it is possible to prevent the light passing through the light-transmitting portion 21 from being diffused due to bubbles contained in the adhesive layer 30 , and it is also possible to prevent the light passing through the light-transmitting portion 21 from diffusing due to the adhesive layer 30 itself. Therefore, the data written on the photo film F appears to be clear.

In the case of disposing the adhesive layer 30 in this way, as shown in FIG. layer, then when the light-shielding mask 20 is bonded to the output-side polarizing plate 19 , the air inside the light-shielding mask 20 escapes to the outside through the discontinuous portion 300 . Therefore, after bonding the light-shielding mask 20 and the output-side polarizing plate 19, there will be no so-called swell of the light-shielding mask 20 and the output-side polarized light caused by stagnation in the formation region (central portion) of the light-transmitting portion 21. Peeling problem of plate 19.

Fig. 11 shows still another embodiment of the liquid crystal display device. The liquid crystal display device 10c of this example is different from the above-mentioned liquid crystal display device 10b in that the substrate 23a side of the light-shielding mask 20 is bonded to the output-side polarizing plate 19 . At this time, during the assembly step of the data writing device, care should be taken to prevent the photosensitive emulsion layer 23d of the light-shielding mask from being damaged, so that the photosensitive emulsion layer 23d of the light-shielding mask 20 can be placed closer to the photographic film F side. . Therefore, since the effect of blocking excess light which cannot be blocked by the liquid crystal element 17 increases, the data image written on the photographic film can be made clear.

12 shows another embodiment of the liquid crystal display device. As shown in the figure, in the liquid crystal display device 10d of this embodiment, the light-shielding mask 20 is stacked between the liquid crystal cell 17 and the output-side polarizer 19. The light-shielding mask 20 is bonded and fixed on the side of the liquid crystal cell 17 with an adhesive layer 30 . In addition, as for the light-shielding mask 20, the side where the emulsion layer 23d is formed, that is, the side where the mask layer is formed, is attached to the output-side polarizing plate 19.

In the lamination arrangement structure of each part of the liquid crystal display device 10d, since the light-shielding mask 20 is bonded to the output side polarizer 19, it is easy to align the thin light-shielding mask 20 with the liquid crystal element 17. Moreover, even if the liquid crystal element 17 is displaced from the light-shielding mask 20, the output-side polarizing plate 19 can be peeled off together with the light-shielding mask 20 to readjust its position without discarding the expensive liquid crystal element 17.

Also, instead of the adhesive layer 30, the light-shielding mask 20 may be held between the liquid crystal element 15 and the output-side polarizing plate 19 to hold the light-shielding mask 20. According to this structure, since the light-shielding mask 20 does not need to be directly bonded to the liquid crystal element 17, even if defective products due to misalignment of the light-shielding mask 20 occur, the expensive liquid crystal element 17 need not be discarded.

13 shows another embodiment of the liquid crystal display device. The liquid crystal display device 10e of this example does not use a transparent substrate, but becomes a structure in which a light-shielding mask 20 is directly formed on the surface of the output side polarizer 19. That is, with respect to the shading plate 20 of this example, as shown in the figure, the light-transmitting portion 21 is formed by an area overlapping with the formation area of the segment 170 of the liquid crystal element 17, and the other portion becomes the light-shielding portion 22. The mask layer is directly formed on the surface of the polarizing plate 19 , thereby forming the light-shielding mask 20 .

In the case of using such an exit-side polarizing plate 19 with a light-shielding mask, it is not necessary to mount the light-shielding mask 20 as a separate component when manufacturing the data writing device, so the assembly steps can be simplified.

Such an exit-side polarizing plate 19 with a light-shielding mask can be produced by the following method.

First, as shown in FIG. 14( a ), a photosensitive emulsion layer 23 b is formed on the surface of the output-side polarizing plate 19 . Next, as shown in FIG. 14(b), a predetermined pattern mask 23c is superimposed on the surface side of the emulsion layer 23b and exposed. Then, the photosensitive emulsion layer 23b is developed with an etchant, and the unexposed part of the photosensitive emulsion layer 23b is removed as shown in FIG. 14(c), so that the light-transmitting portion 21 is formed. In addition, the photosensitive emulsion layer 23d in the exposed portion remains on the output-side polarizing plate 19 as the light-shielding portion 22 . In this way, the output-side polarizing plate 19 with a light-shielding mask can be formed.

In addition, the patterned photosensitive emulsion layer can also be replicated on the exit-side polarizer 19 to manufacture the exit-side polarizer 19 with a light-shielding mask. That is, first, as shown in FIG. 15(a), the photosensitive emulsion layer 24b is formed on the surface of the replication base sheet 24a, and then, as shown in FIG. 15(b), the predetermined pattern mask 24c is formed on the photosensitive emulsion layer The surface sides of 24b are superimposed and exposed. Next, as shown in FIG. 15( c), the photosensitive emulsion layer 24b is developed with an etchant to remove the photosensitive emulsion layer 24b of the unexposed part, while the photosensitive emulsion layer of the exposed part remains on the transfer substrate sheet 24a. Next, as shown in FIG. 15( d ), the transfer sheet 24a is peeled off while applying pressure to the transfer base sheet 24a and the exit-side polarizing plate 19 so that the photosensitive emulsion layer is sandwiched between them. The photosensitive emulsion layer 24d is transferred to the output side polarizing plate 19 side as the light shielding portion 22 . In addition, the portion without the emulsion layer 24d becomes the light-transmitting portion 21 of the light-shielding mask 20 .

In addition, the output-side polarizing plate 19 of the light-shielding mask can also be manufactured from a gel-like emulsion layer. That is, first, as shown in FIG. Next, as shown in FIG. 16(b), a prescribed pattern mask 25c is superimposed on the surface side of the gel-like emulsion layer 25b and exposed. As a result, the photosensitive portion in the gel-like emulsion layer 25 b becomes transparent and becomes the light-transmitting portion 21 . On the contrary, the unsensitized portion becomes the light-shielding portion 22 .

Also, in this example, although the light-shielding mask 20 is formed on the surface near the film F side of the exit-side polarizing plate 19, it may also be formed on the surface on the opposite side, that is, near the liquid crystal element 17 of the exit-side polarizing plate 19. The light-shielding mask 20 shown in FIGS. 14 to 16 is formed on the surface of the side.

Fig. 17 shows still another embodiment of a liquid crystal display device. The structure of the liquid crystal display device 10f of this example is basically the same as that shown in FIG. The agent layer 31 a bonds and fixes the exit side polarizer 19 on the exit surface of the liquid crystal element 17 . In addition, the light-shielding mask 20 is bonded and fixed on the exit surface of the exit-side polarizer 19 by means of an adhesive layer 31 .

A thermosetting type adhesive may be used as the respective adhesive layers 31, 31a and 31b.

In this example, an ultraviolet adhesive 31c is applied to the adhesive layers 31a, 31, and the output side polarizing plate 19 and the light shielding mask 20 are bonded and fixed to the output surface side of the liquid crystal cell 17. Adhesives 31c are placed at the central positions of the polarizing plate 19 and the short-side peripheral sides 19a, 20b and 19b, 20b of the light-shielding mask 20, respectively. In addition, these adhesives 31c transition from the outer peripheral sides of the polarizing plate and the light-shielding mask to the surface of the liquid crystal cell, and fill up in a substantially hemispherical shape. The reason for using this adhesive 31c will be understood as follows.

In the light-shielding mask 20 , the light-transmitting portion 21 and the light-transmitting portion on the side of the liquid crystal element 17 need to be accurately laminated. For this purpose, alignment marks are formed as described above to achieve accurate alignment. However, even when the alignment is correct, the result of the laminate bonding is that the adhesive itself is slightly sticky and not fully cured. For this reason, there is a fear that the bonded light-shielding mask 20 and the liquid crystal element 17 may move slightly relative to each other.

This does not pose a problem in the case of a structure in which the original light-shielding mask 20 does not exist. However, in the laminate including the light shielding mask 20 as in the present invention, only the adhesive layers 31 and 31a are present, and it is difficult to completely fix the light shielding mask 20 to the liquid crystal element 17 without lateral displacement. Therefore, in the present invention, an ultraviolet curable adhesive 31c in a cured state is further used for the cured state, thereby adopting a fixing structure in which the light-shielding mask 20 and the side surface of the liquid crystal cell 17 do not move laterally.

If the structure shown in FIG. 17 is adopted, since the position shift of the light-shielding mask 20 can be surely prevented, the correct position of the light-shielding mask 20 and the liquid crystal element 17 can be kept superimposed. Therefore, the sharpness of the resulting written image can be improved.

In addition, in this example, the same light-shielding mask as that of the above-mentioned examples can be used. In addition, a laminated structure in which a light-shielding mask is sandwiched between the output surface of the liquid crystal element and the output-side polarizing plate may also be employed.

Fig. 18 shows yet another embodiment of a liquid crystal display device. The liquid crystal display device 10g of this example, like the example shown in FIG. 17, additionally uses an ultraviolet curable adhesive, and is firmly fixed to an example of a liquid crystal element in a state where the light-shielding mask is not moved laterally.

The basic structure of the liquid crystal display device 10g of this example is the same as that shown in FIGS. 9 and 10, for example. What is added in this example is that together with the adhesive layer 31 formed in the shape of a rectangular frame between the light-shielding mask 20 and the output-side polarizing plate 19, fan-shaped cutouts 31a are added at the four corners. . And, on the mask layer portion of the light-shielding mask 20 corresponding to these notched portions 31a, a circular light-transmitting portion 23e is formed.

On these four light-transmitting portions 23e, an ultraviolet curable adhesive 31d shown in FIG. 18(a) is placed in a ball shape. After placing the adhesive 31d on the light-shielding mask 20, the light-shielding mask is pasted and fixed with the adhesive layer 31 against the output surface of the output-side polarizing plate 19. Thereafter, the surface side of the light-shielding mask 20, in this example, from the transparent substrate 23d side of the light-shielding mask, is exposed to the adhesive 31 positioned at the four corners. That is to say, through the transparent substrate 23d, the light-transmitting portion 23e of the mask layer is exposed to the ultraviolet curable adhesive 31d sandwiched between the substrate 23d and the output-side polarizer 19 to completely hardening.

As a result, the light-shielding mask 20 is fixed to the output-side polarizing plate 19 side by the adhesive force of the adhesive layer 31 and the adhesive 31d. Therefore, the light-shielding mask 20 is different from the case where the light-shielding mask 20 is simply bonded and fixed only by the adhesive layer 31 , the light-shielding mask 20 does not move laterally, but remains in a normal and accurate overlapping state. Therefore, a clear written image can be formed.

In addition, when the light-shielding mask 20 is formed by the gel mask method described with reference to FIG. The adjacent light shielding portion 22 also becomes a flat surface. Therefore, the light-shielding mask 20 is bonded to the exit-side polarizing plate 19 in a state where the four adhesives 31d are placed on the surface of the light-transmitting portion 23e, and thereafter, it is cured by exposure.

As described above, in the photographic data writing device of the present invention, the light-shielding mask is disposed between the liquid crystal cell and the plane on which the photographic film is disposed. Therefore, excess light passing through the liquid crystal element does not reach the photographic film, but is blocked by the light-shielding mask. Therefore, sharpening of images written on photographic films can be achieved.

According to the present invention, the light-shielding mask is bonded and fixed on the exit surface of the exit-side polarizing plate with an adhesive layer, and the adhesive layer is formed around the light-transmitting portion while avoiding it. Therefore, since light diffusion through the adhesive layer does not reach the photographic film, a sharp image written on the photographic film can be obtained. In addition, in the case where a portion having an intermittent adhesive layer is formed, since there is no air remaining inside the light-shielding mask after bonding, swelling of the light-shielding mask does not occur at the formation region of the light-transmitting portion. In addition, There are also no disadvantages such as diffusion of light passing through this portion. Therefore, it is possible to maintain a captured image sharply.

In addition, the present invention forms the mark for alignment on the electrode substrate of the liquid crystal element, and since the light-transmitting portion for alignment is formed on the light-shielding mask, the data pattern formation area of the liquid crystal element and the light-transmitting portion of the light-shielding mask can be formed with high precision. alignment between the positions.

Also, according to the present invention, on the exit surface of the liquid crystal element, when pasting the exit-side polarizing plate and the light-shielding mask, in addition to the adhesive layer arranged between their opposing surfaces, a photosensitive film such as an ultraviolet curing type is also used. A permanent adhesive is used to bond and fix the light-shielding mask on the side of the liquid crystal element. Therefore, the light-shielding mask can be fixed on the side of the liquid crystal element without moving laterally, and the overlapping state of these can be reliably maintained, and a clear captured image can be obtained.

Similarly, according to the present invention, an adhesive is also added to be arranged between the opposite surfaces of the light-shielding mask and the outgoing polarizer of the liquid crystal element, and the parts on both sides are bonded and fixed with the photosensitive adhesive dispersed therebetween. . In this case, since the light-shielding mask can be fixed on the exit-side polarizing plate side of the liquid crystal element, it can be bonded and fixed without lateral movement, so the light-shielding mask can be kept in the state of alignment, and a clear image can be obtained. ingested images.

On the other hand, according to the present invention, compared with the conventional light-shielding mask, it becomes possible to manufacture it cheaply. Especially in the case where the light-shielding mask is directly fabricated on the surface of the polarizing plate on the output side, since the light-shielding mask does not need to be handled as an independent part, the working efficiency of the assembly of the data writing device is improved.

Claims (19)

1. A data writing device for a camera, the data writing device has: a light source (13), which guides light emitted from the light source into an optical path arranged on a photographic film surface of a photographic film arrangement surface, and is arranged on the optical path. The alignment state of the liquid crystal agent between a pair of electrode substrates (171, 172) is used as a light-transmitting part, and a liquid crystal element (17) forming a data pattern written in a photographic film (F) is disposed on the side closer to the light source than the liquid crystal element. an incident-side polarizing plate (18) on the optical path and an outgoing-side polarizing plate (19) disposed on the optical path closer to the photographic film arrangement side than the liquid crystal cell, It is characterized in that a light-shielding mask (20) which is a light-transmitting portion (21) in an area overlapping with the formation area of the above-mentioned data pattern is arranged on the optical path closer to the side of the photo film arrangement surface than the above-mentioned liquid crystal element; The above-mentioned light-shielding mask (20) is arranged on the side closer to the above-mentioned photographic film arrangement surface than the above-mentioned exit-side polarizing plate (19); The above-mentioned light-shielding mask (20) and the above-mentioned exit-side polarizing plate (19) are laminated and fixed by an adhesive layer (30) disposed between the opposing surfaces thereof. 2. The data writing device for a camera according to claim 1, wherein alignment marks (176) are formed on the electrode substrates (171, 172) of the liquid crystal element (17), and alignment marks (176) are formed between the light-shielding mask (20) and The positions corresponding to the above-mentioned alignment marks form alignment light-transmitting parts (200). 3. The data writing device for a camera according to claim 2, wherein the above-mentioned alignment light-transmitting portion (200) is formed in an area where the light from the above-mentioned light source (3) of the above-mentioned light-shielding mask (20) does not irradiate (210). 4. The data writing device for a camera according to claim 1, wherein said adhesive layer (30) is formed around said transparent portion (21) while avoiding said portion (21). 5. The data writing device for a camera according to claim 1, wherein the adhesive layer (30) avoids the light-transmitting portion (21) and is arranged in a closed shape surrounding its periphery, and is formed in the closed shape. At least a portion of the adhesive layer is completely interrupted. 6. The data writing device for a camera according to claim 1, wherein the above-mentioned light-shielding mask (20) and the above-mentioned exit-side polarizing plate (19) are stacked and fixed, and the above-mentioned liquid crystal element (17) is arranged on its opposite side. Adhesive layers (31, 31a, 31c) between the surfaces are stacked and fixed to each other, and at the same time, at least a part of the outer peripheral side of the output side polarizer (19) and the light shielding mask (20) is hardened by exposure. Adhesive, they are fixed on the surface of above-mentioned liquid crystal element (17). 7. A data writing device for a camera according to claim 6, wherein said photosensitive adhesive is an ultraviolet curable adhesive (31d). 8. The data writing device for a camera according to claim 1, wherein the above-mentioned exit-side polarizing plate (19) and the above-mentioned light-shielding mask (20) are fixed to each other by adhesives dispersed and arranged between their opposing surfaces, the The adhesive is a photosensitive adhesive hardened by exposure. 9. The data writing device for a camera according to claim 8, characterized in that a light-transmitting portion (23e) for hardening the adhesive is formed at the position where the photosensitive adhesive is disposed on the light-shielding mask (20), The above-mentioned photosensitive adhesive is exposed and cured through the light-transmitting portion. 10. The data writing device for a camera according to claim 9, wherein the light-transmitting portion (23e) for hardening the adhesive is formed on the above-mentioned light-transmitting portion formed on an area that avoids overlapping with the formation area of the above-mentioned data pattern. On the position of part (21). 11. A writing device for a camera according to claim 10, wherein said photosensitive adhesive is an ultraviolet curable adhesive (31c). 12. A data writing device for a camera according to any one of claims 6 to 11, wherein the adhesive layer is a layer composed of a thermosetting adhesive. 13. The data writing device for a camera according to claim 1, wherein the light-shielding mask (20) has a transparent substrate (23a) and a mask layer (23d) formed on the surface of the substrate, and the mask The mold layer is made of a light-shielding sensitive emulsion layer forming the light-transmitting portion (21) on the surface of the above-mentioned substrate by means of photolithography. 14. The data writing device for a camera according to claim 1, wherein the light-shielding mask (20) has a transparent substrate and a mask layer (23d) formed on the surface of the substrate, and the mask layer is Partially remove the photosensitive emulsion layer that is also formed on the surface of the substrate for replication by photolithography, and retain the part of the photosensitive emulsion layer on the surface of the substrate for replication that has removed the part corresponding to the above-mentioned light-transmitting part, and then pass This part is formed by duplicating the above-mentioned substrate from the above-mentioned duplication base material. 15. The data writing device for a camera according to claim 1, wherein the light-shielding mask has a transparent substrate (23a) and a mask layer (23d) formed on the surface of the substrate, and the mask layer is The above-mentioned light-transmitting portion (21) and the above-mentioned light-shielding portion (22) are formed by exposing the gel-like photosensitive emulsion layer formed on the surface of the above-mentioned substrate similarly by exposure treatment. 16. The data writing device for a camera according to claim 1, wherein said light-shielding mask (20) is formed directly on the surface of said output-side polarizing plate (19). 17. A data writing device for a camera according to claim 16, wherein said light-shielding mask (20) is a light-shielding emulsion layer in which light-transmitting portions are formed by photolithography. 18. The data writing device for cameras according to claim 16, characterized in that, the above-mentioned light-shielding mask (20) is to partially remove the photosensitive emulsion layer that is also formed on the surface of the base material for replication by photolithography, and retain the base material for replication. The part of the photosensitive emulsion layer corresponding to the above-mentioned light-transmitting part on the surface of the material is removed, and then the part is copied from the above-mentioned transfer base material to the above-mentioned exit-side polarizing plate. 19. The data writing device for a camera according to claim 16, characterized in that, the above-mentioned light-shielding mask (20) is a gel-like photosensitive emulsion layer formed on the surface of the above-mentioned exit-side polarizer (19) by exposure treatment, and the above-mentioned light-shielding mask (20) is formed. A mask for the light-transmitting part (21) and the above-mentioned light-shielding part (22).

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