JPH10142697A - Light valve installing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install two light valves in the different directions mutually with one side of one light valve being brought close to one side of the other light valve while allowing regulation of registration and to secure installing strength. SOLUTION: Metal fittings 13, 23, 33 are fixed in a cross dichroic prism 40 via plate members 41, 42. Light valves 11, 21, 31 are fixed in metal fittings 12, 22, 32 respectively. The leg parts protruded from the both sides of the metal fittings 13, 23, 33 and the leg parts protruded from the both sides of the metal fittings 12, 22, 32 are soldered together. The leg parts 13a, 12a of the metal fittings 13, 12 and the leg parts 23b, 22b of the metal fittings 23, 22 cross each other alternately. The leg parts 23a, 22a of the metal fittings 23, 22 and the leg parts 33b, 32b of the metal fittings 33, 32 cross each other on different levels.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for mounting a light valve in a projection type display device using a plurality of light valves.

[0002]

2. Description of the Related Art As a conventional example of a projection type display device using a plurality of light valves, a device described in Japanese Patent Application Laid-Open No. 63-39294 is known. FIG. 5 shows a configuration diagram of this conventional projection type display device, and the projection type display device will be described with reference to FIG.

In FIG. 5, reference numeral 211 denotes a so-called Philips type dichroic prism which serves both as a color separating optical system and a color synthesizing optical system. The dichroic prism 211 includes a first prism 211A and a first prism 211A arranged as shown in FIG. Two prism 211B and third prism 21
1C. Surface 211e of first prism 211A
A dichroic thin film that reflects blue light and transmits light in a longer wavelength range than that is deposited. A gap is formed between the first prism 211A and the second prism 211B. Second prism 211B and third prism 21
A dichroic thin film that reflects red light and transmits green light is deposited on a surface 211f between the first and second surfaces. Therefore, when white light enters from the surface 211a, the surface 211a
e, the blue light is reflected, and this blue light is further reflected on the surface 211a.
The light is totally reflected at the inner surface and goes to the emission surface 211b. Face 21
The red light out of the light transmitted through 1e is reflected by the surface 211f, is totally internally reflected by the surface in contact with the gap, and is emitted by the emission surface 2f.
Head to 11c. Of the light transmitted through the surface 211e, green light is transmitted through the surface 211f and goes to the emission surface 211d.
In FIG. 5, reference numerals 212, 213, and 214 denote two-dimensional reflective liquid crystal elements (light valves) for sequentially displaying a blue component image, a red component image, and a green component image. Are arranged in the vicinity. These light valves 212, 213, 21
Reference numeral 4 has a configuration in which reflection layers 215, 216, and 217 made of dielectrics are respectively formed on the back surface of the transmission type light valve, and is configured as a reflection type light valve. In FIG. 5, reference numeral 221 denotes a polarizing beam splitter, which is arranged on the setting optical axis O of the dichroic prism 211. Reference numeral 222 denotes a collimation lens, and a white light source 223 such as a halogen lamp is arranged almost on the focal point of the collimation lens 222.
218, 219 and 220 are light valves 212 and 21
3, 214, respectively.

In the conventional projection display apparatus having the above-described configuration, the light beam emitted from the white light source 223 enters the collimation lens 222 to become a substantially parallel light beam, and is reflected by the polarization beam splitter of the polarization beam splitter 221. Light enters the dichroic prism 211. The linearly polarized light (S-polarized light) incident on the dichroic prism 211 is color-separated into each color light, and is incident on each color light valve 212, 213, 214, and is spatially modulated by the video signal of each color light, and the polarization direction. Is reflected by being converted by 90 degrees, and travels backward in the optical path, is color-combined by the dichroic prism 211, and exits from the surface 211a.
The component whose polarization direction has been changed (P-polarized component) is analyzed by the polarization beam splitter 221 and transmitted therethrough.
The light is projected on the screen 225 by the projection lens 224.

The light valves 212 and 21 for the respective color lights
3, 214 has a predetermined resolution, and has pixels determined by the resolution and the size of the light valves 212, 213, 214. A predetermined pixel is activated by the signal for each color light, and the arrangement of the liquid crystal in the pixel portion is changed to give a modulation action to the incident light so as to emit the light with a polarization different from the incident light.

The light valves 212, 213, and 214 have the same resolution, and the modulated light of each color emitted from the light valves is synthesized and projected. It is necessary to perform registration, so-called registration adjustment, every time.

Although Japanese Patent Application Laid-Open No. 63-39294 does not disclose a method for adjusting the registration,
Registration adjustment was performed using the mounting apparatus disclosed in Japanese Patent Application Publication No.
A, 211B, 211C have light valves 212, 21
It is conceivable to attach 3,214. However, the mounting device described in Japanese Utility Model Publication No. 5-20076 does not mount a liquid crystal light valve, but uses the same Philips type dichroic prism as the Philips type dichroic prism described in JP-A-63-39294. , While adjusting the registration
This is a device for mounting a solid-state imaging device such as a CD.

FIG. 6 is an exploded perspective view of the mounting device disclosed in Japanese Utility Model Publication No. 5-20076. This device is composed of three sets (one set of which is not shown) corresponding to R light (red light), G light (green light), and B light (blue light). Since each set of devices has exactly the same configuration,
A set of devices disassembled in FIG. 6 will be described by defining an X axis, a Y axis, and a Z axis that are orthogonal to each other as shown in FIG. 6 for convenience of description. This device includes a first metal fitting 124 to which a solid-state image sensor 123 composed of a CCD element is fixed with a screw 127, and a second metal fitting 125 to be fixed to a predetermined color light emitting end face of a Philips type prism 121. And The surface of the solid-state image sensor 123 is X
It is a Y plane. The first metal fitting 124 has a total of four legs 1 protruding two each in the Y direction and the −Y direction.
24A. Two legs 12 protruding in the Y direction
4A position in the X direction and two legs 1 protruding in the -Y direction
The position in the X direction of 24A is the same position. The second fitting 125 has four legs 125A protruding in the Y direction or the −Y direction at positions corresponding to the four legs 124A of the first fitting 124, respectively.
According to this apparatus, the solid-state image sensor 123 is fixed by soldering the leg 124A of the first metal fitting 124 and the corresponding leg 125A of the second metal fitting 125 while performing registration adjustment. It is fixed to the prism 121. In FIG. 6, reference numeral 126 denotes a packing member, which is sandwiched between the first metal fitting 124 and the second metal fitting 125 at the time of fixing. In FIG. 6, reference numeral 128 denotes another device in a state where it is fixed to the prism 121 as described above. Further, in FIG. 6, 122 is a support substrate, 124B is an opening formed in the first metal fitting 124,
Reference numeral 125B denotes an opening formed in the second metal fitting 125, and A denotes solder previously attached to the legs 124A and 125A.

As can be seen from the above description, in the conventional projection type display device shown in FIG. 5, the Philips dichroic prism 211 and the light valve 212,
There is no problem even if the conventional mounting device shown in FIG. 6 is used to mount the 213 and 214 so that the registration can be adjusted. That is, in the Philips type dichroic prism, since the emission surfaces of the respective color lights are not adjacent to each other but are far apart from each other, the legs 124A and 125A for one color light are different from the legs 124A and 124A for the other color light.
A situation that would collide with 125A cannot occur.

[0010]

However, the projection type display device differs from the projection type display device shown in FIG.
For example, light valves for the respective color lights are arranged near three side surfaces of the cross dichroic prism (the first side surface and the second side surface are adjacent to each other, and the second side surface and the third side surface are adjacent to each other). There is also a projection display device in which a light valve is disposed near two adjacent side surfaces of a polarizing beam splitter.

In such a projection display device, FIG.
The following problems occur when the mounting device as shown in FIG.

That is, when light valves are arranged near two adjacent surfaces, such as a cross dichroic prism and a polarizing beam splitter, the mounting device shown in FIG. 6 is provided for one surface. Leg 124 of first and second fittings 124, 125
A, 125A, and legs 124A, 12 of first and second fittings 124, 125 provided for a surface adjacent to the surface.
5A collides and the light valve cannot be arranged. This is because the mounting device shown in FIG. 6 has exactly the same structure in each set, and furthermore, the positions of the legs 124A and 125A projecting in the Y direction in the X direction and the legs projecting in the −Y direction. This is because the positions in the X direction of 124A and 125A are the same. However,
If the cross dichroic prism, the polarizing beam splitter, and the like are configured to be larger than originally required for processing light, such collision does not occur, but in this case, the cost is inevitable. In particular, since the number of pixels has increased due to the recent demand for high definition and the light valve has been inevitably increased, the cross dichroic prism and the The polarizing beam splitter and the like must be made quite large, which significantly increases the cost.

Therefore, it is conceivable that the legs 124A and 125A are removed from the mounting device shown in FIG. However, in this case, since the remaining overlapping portions of the first and second fittings 124 and 125 are fixed by solder or an adhesive, the following problem occurs. That is, since the area of the overlapping portion is small, the amount of the solder or the adhesive decreases, and it is not possible to secure a sufficient bonding strength. Also, in the case of fixing with solder, since the soldered portion comes close to the light valve, the liquid crystal itself of the light valve does not have much reliability against temperature,
The performance of the light valve deteriorates due to the soldering operation performed at a high temperature.

The present invention has been made in view of the above circumstances, and at least two light valves are adjustable in registration such that one side of the two light valves is close to each other and the directions of the two light valves are different from each other. An object of the present invention is to provide a light valve mounting device that can be mounted and that can secure sufficient mounting strength.

[0015]

In order to solve the above-mentioned problems, a light valve mounting apparatus according to a first aspect of the present invention comprises a first light valve and a second light valve.
One side of the first light valve and one side of the second light valve are close to each other, and the direction of the surface of the first light valve is different from the direction of the surface of the second light valve. A light valve mounting device for mounting, wherein the first light valve is fixed to a first metal fitting, and the first light valve is provided on the side of the side of the first light valve and on the side opposite thereto. A first metal fitting having a plurality of legs projecting in the direction of the surface of the first metal fitting, and a second metal fitting fixed to the base, the first metal fitting having a position corresponding to each of the plurality of legs of the first metal fitting. A second fitting having a plurality of legs protruding in a direction of a surface of the first light valve, and a third fitting to which the second light valve is fixed, wherein the second light valve is The side of the side of A third metal fitting having a plurality of legs protruding in the direction of the surface of the second light valve on a side opposite to the third metal fitting, and a fourth metal fitting fixed to the base, wherein the third metal fitting is provided. A second fitting having a plurality of legs protruding in the direction of the surface of the second light valve at positions respectively corresponding to the plurality of legs of the first metal fitting. Parts and the plurality of legs of the second fitting respectively corresponding thereto are fixed, and the plurality of legs of the third fitting and the plurality of fourth fittings respectively corresponding thereto are fixed. A leg portion of the first metal fitting, and a leg portion of the second metal fitting corresponding to the leg portion, the leg portion of the first metal fitting protruding on the side of the side of the first light valve; On the side of the side of the second light valve And the leg portion of the fourth bracket which corresponds to the leg portion and the leg portion of the third bracket to be out, is to intersect the stepped with each other.

The light valve mounting device according to a second aspect of the present invention is the light valve mounting device according to the first aspect, wherein the fixing between the legs is performed by fixing with a solder or an adhesive. Things.

In the present invention, the leg of the first metal fitting protruding on the side of the side of the first light valve and the leg of the second metal fitting corresponding to the leg, The leg of the third metal fitting protruding on the side of the side of the second light valve and the leg of the fourth metal fitting corresponding to the leg intersect with each other in a stepped manner. Therefore, according to the present invention, unlike the case where the mounting device as shown in FIG. 6 described above is used, the first light valve and the second light valve can be connected to the first light valve without collision of the legs. Registration adjustment is performed so that one side of the light valve and one side of the second light valve are close to each other and the direction of the surface of the first light valve is different from the direction of the surface of the second light valve. Can be mounted as possible. As a result, while miniaturizing the cross dichroic prism, the polarization beam splitter, and the like, the light valves can be arranged near the adjacent surfaces of the cross dichroic prism, the polarization beam splitter, and the like. Further, according to the present invention, since the first to fourth metal fittings have the protruding legs, sufficient mounting strength can be secured. Further, according to the present invention, since the first to fourth metal fittings have protruding legs, even when the fixing between the legs is performed by fixing with solder, the soldering is performed. Since the attachment portion is away from the light valve, the light valve can be protected from heat generated by the soldering operation.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a light valve mounting apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS.

FIG. 1 is a perspective view showing a light valve mounting apparatus and a cross dichroic prism 40 for color synthesis according to this embodiment. FIG. 2 is a perspective view showing a state where a part thereof is disassembled. FIG. 3A shows the positional relationship between the legs of the metal fittings 12 and 13, the legs of the metal fittings 22 and 23, and the legs of the metal fittings 32 and 33 in the present embodiment.
It is the figure seen in the direction. FIGS. 3B and 3C are diagrams showing other positional relationships of these legs, respectively, as described later. For convenience of explanation, an X axis, a Y axis, and a Z axis orthogonal to each other are defined as shown in these drawings (the same applies to FIG. 4 described later).

As shown in FIG. 1 and FIG. 2, the cross dichroic prism 40 for color synthesis
They are arranged such that light is incident in the −X direction and G light is incident in the Y direction. That is, the B light incident on the side surface of the cross dichroic prism 40 parallel to the YZ plane in the X direction perpendicular to the side surface is reflected in the Y direction by the B light reflecting dichroic film 40B inside the cross dichroic prism 40. . Also, the side surface of the cross dichroic prism 40 facing this side surface (this side surface is also X
It is parallel to the Z plane. ), The R light incident in the −X direction perpendicular to the side surface is reflected in the Y direction by the R light reflecting dichroic film 40 </ b> R arranged in an X-shape orthogonal to the B light reflecting dichroic film 40 </ b> B. Further, the side surface (parallel to the XZ plane) of the cross dichroic prism 40 perpendicular to the both side surfaces is Y perpendicular to the side surface.
The G light incident in the direction is reflected by the B light reflecting dichroic film 40.
The light passes through the B and R light reflecting dichroic films 40R and proceeds as it is in the Y direction. The cross dichroic prism 40 is arranged so as to achieve the color synthesis of the R light, the G light, and the B light in this manner, and the color synthesis light is transmitted to a screen (not shown) by the projection lens 105 (see FIG. 4 described later). Projected above.

The cross dichroic prism 40
Is an optical isosceles triangular prism having four optical transparent prisms whose right angles are aligned with each other, and the R-reflecting dichroic film 40R or the B-light reflecting dichroic film 40B is sandwiched between the mating surfaces to be bonded. The film 40R and the B light reflecting dichroic film 40B have a structure in which they are arranged in an X-shape.

The light valve mounting apparatus according to the present embodiment is configured so that the liquid crystal light valves 11, 21, 31 for each color light are mounted on the cross dichroic prism with the cross dichroic prism 40 as a base. . The light valve 11 for B light is arranged near the B light incident surface of the cross dichroic prism 40.
Light valve 2 for G light, mounted parallel to the Z plane
1 is mounted near the G light incident surface in parallel with the XZ plane, and the R light light valve 31 is mounted near the R light incident surface.
It is designed to be mounted parallel to the Z plane. That is, one side of the light valve 11 and one side of the light valve 21 are close to each other, and the directions of the light valve 11 and the light valve 21 are different from each other. And the direction of the light valve 21 and the direction of the light valve 31 are different from each other,
Each of the light valves 11, 21, 31 is attached. In the present embodiment, transmission light valves are used as the light valves 11, 21, 31.

The light valve mounting apparatus according to the present embodiment is provided in correspondence with metal plate members 41 and 42 serving as mounting bases for the cross dichroic prism 40 and the light valves 11, 21 and 31, respectively. Outer fittings 12, 2 arranged on the light valve 11, 21, 31 side (for convenience of description, referred to as "outer").
2 and 32 and the cross dichroic prism 40 provided corresponding to each of the light valves 11, 21 and 31 respectively.
Side metal fittings 13, 23, 33 disposed on the side (for convenience of description, referred to as “inside”). In the present embodiment, the outer fittings 12, 22, and 32 have the same configuration, and the inner fittings 13, 23, and 33 have the same configuration.

The light valves 11, 21, 31 include liquid crystal panel portions 11a, 21a, 31a, holding members 11b, 21b, 31b for holding the same, and flat cables 11c, 21c, 31c for supplying image signals. And The holding members 11b, 21b, 31b have 3
A plurality of screw holes 54 are formed.

The plate members 41 and 42 are bonded to the upper surface and the lower surface of the dichroic prism 40 in the Z direction with an adhesive, respectively. As shown in FIG.
A screw hole 50 for fixing the inner metal fittings 13, 23, 33 is formed in the hole 42, respectively. Although not shown in the drawings, the plate member 41 or the plate member 42 is fixed to a support base of the projection display device.

Each of the inner metal fittings 13, 23, 33 has a bent portion 13 formed along the plate members 41, 42 by bending the upper and lower sides in the same direction.
c, 23c and 33c. As shown in FIG.
Screw holes 51 are formed in the bent portions 13c, 23c, and 33c at positions corresponding to the screw holes 50, respectively. Each of the inner fittings 13, 23, 33 is fixed to the plate members 41, 42 by inserting a screw 53 into the hole 51 and screwing into the screw hole 50 of the plate members 41, 42. That is, in the present embodiment, the inner fittings 13, 23, and 33 are fixed to the dichroic prism 40 via the plate members 41 and 42. However, without providing the plate members 41 and 42, the bent portion 1
The inner fittings 13, 23, and 33 may be directly fixed to the dichroic prism 40 by bonding the 3c, 23c, and 33c to the upper and lower surfaces of the dichroic prism 40 with an adhesive. As shown in FIG. 2, the liquid crystal panel unit 1 is provided substantially at the center of the inner metal fittings 13, 23, 33.
Openings 13d, 23d, 33d slightly larger than those are formed at positions corresponding to 1a, 21a, 31a.

Although the inner fittings 13, 23, and 33 have exactly the same configuration as described above, with respect to the inner fitting 23, the inner fitting 23 has a side on the X-direction side in the XZ plane direction ( That is, while having two legs 23a protruding in the direction of the surface of the light valve 21),
It has two legs 23b projecting in the direction of the XZ plane on the side on the X direction side. The leg 23a and the leg 23b
They are formed stepwise with respect to the Z direction. Similarly, the inner metal fitting 13 has a YZ
The direction of the plane (that is, the direction of the surface of the light valve 11)
And two legs 13a protruding in the direction of the YZ plane on the side in the Y direction.
b, and the leg 13a and the leg 13b are formed stepwise with respect to the Z direction. Inner fitting 33
Has two legs 33a protruding in the direction of the YZ plane (that is, the direction of the surface of the light valve 31) on the side on the Y direction side, and has Y on the side on the −Y direction side.
It has two legs 33b protruding in the direction of the Z plane,
The leg 33a and the leg 33b are formed so as to be different from each other in the Z direction. In the present embodiment, the legs 13a, 23a, 33a are formed at the same position in the Z direction, and the legs 13b, 23b, 33b are formed at the same position in the Z direction. As shown by hatching in FIG. 2, -Y of the legs 23a and 23b
Solder plating is previously formed on the surface on the direction side. Similarly, the surfaces of the legs 13 a and 13 b on the −X direction side and the legs 33
Solder plating is also formed in advance on the surfaces in the X direction of a and 33b.

On the other hand, the outer fittings 12, 22, 32
Legs 13a, 13b, 23 of inner metal fittings 13, 23, 33
a, 23b, 33a, 33b, respectively, legs 12a, 12b, 22a, 22b, 3 projecting in the direction of the surfaces of light valves 11, 21, 31, respectively.
2a and 32b. These legs 12a, 12
b, 22a, 22b, 32a, 32b
Solder plating is also formed in advance on the surfaces facing a, 13b, 23a, 23b, 33a, and 33b, respectively. In addition, as shown in FIG.
32, the liquid crystal panel portions 11a, 21
Openings 12d, 22d, and 32d slightly larger than those are formed at positions corresponding to a and 31a.

The outer fittings 12, 22 and 23 have holding members 11b and 21 for the light valves 11, 21 and 31, respectively.
Three screw holes 55 are formed at positions respectively corresponding to the screw holes 54 for b and 31b. Screw 56
Are inserted into the holes 54 of the holding members 11b, 21b, 31b and screwed into the screw holes 55, so that the light valves 11, 21, 31 are fixed to the outer fittings 12, 22, 23, respectively.

And legs 13a, 13b, 23a, 23b, 33a, 33b of the inner metal fittings 13, 23, 33,
Legs 12a, 12b, 22a, 22b, 32a, 32b of outer fittings 12, 22, 32 corresponding to these, respectively.
Means that the solder plating surfaces are partially melted by heating and then solidified by further cooling, whereby the inner metal fittings 13, 23, 33 and the outer metal fittings 12, 22, 32 are fixed. Fixed to each other. Figure 1,
As shown in FIGS. 2 and 3A, the legs 13a, 12a of the inner metal fitting 13 and the outer metal fitting 12, and the legs 23b, 22b of the inner metal fitting 23, and the outer metal fitting 22 intersect with each other at different levels. I have. The legs 23a, 22a of the inner metal fitting 23 and the outer metal fitting 22, and the legs 33b, 32b of the inner metal fitting 33 and the outer metal fitting 32 intersect with each other at different levels.

When actually assembling, first, the plate members 41, 42 are fixed to the cross dichroic prism 40, and then the inner metal fittings 13, 23,
While fixing 33, the light valves 11, 21, 31 are fixed to the outer fittings 12, 22, 32, respectively. The specific method is as described above. Thereafter, for example, the outer fitting 1 on which the light valve 11 for B light is fixed in advance.
2 is fixed to the inner metal fitting 13 by soldering according to the method described above. Next, for example, while observing the projected image, the position of the pixel of the light valve 21 for G light is adjusted with respect to the pixel of the light valve 11 for B light (that is, while performing registration adjustment). Light valve 2
The outer fitting 22 to which 1 is fixed in advance is fixed to the inner fitting 23 by soldering according to the method described above. Finally, similarly, while observing the projected images, the pixels of the light valves 11 and 21 for the B light and the G light are applied to the light valves 3 for the R light.
The outer fitting 32 to which the light valve 31 is fixed in advance is fixed to the inner fitting 23 by soldering according to the above-described method while performing the alignment of one pixel (that is, while performing registration adjustment).

In this embodiment, as described above, the protruding legs 13a, 12a of the inner fitting 13 and the outer fitting 12 are provided.
and the protruding legs 2 of the inner metal fitting 23 and the outer metal fitting 22
3b and 22b intersect with each other at different levels, and do not collide with each other. Therefore, the light valve 11
The light valve 11 and the light valve 11 are arranged such that the side of the light valve 21 and the side of the light valve 21 in the −X direction are close to each other and the direction of the surface of the light valve 11 is different from the direction of the surface of the light valve 21. 21 can be attached so that registration can be adjusted. Further, as described above, the protruding leg portions 23 of the inner metal fitting 23 and the outer metal fitting 22 are provided.
a, 22a and the protruding legs 33b, 32b of the inner metal fitting 33 and the outer metal fitting 32 intersect with each other at different levels, and do not collide with each other. Therefore, the side of the light valve 21 on the X direction side and the side of the light valve 31 on the −Y direction side are close to each other, and the direction of the surface of the light valve 21 and the direction of the surface of the light valve 31 are different from each other. The light valves 21 and 31 can be attached so that registration can be adjusted. As a result, the light valves 11, 21, 31 can be arranged near the adjacent surfaces of the cross dichroic prism 40, respectively, while reducing the size of the cross dichroic prism 40.

According to the present embodiment, the metal fittings 12,
13, 22, 23, 32, 33 are protruding legs 12a,
12b, 13a, 13b, 22a, 22b, 23a, 2
3b, 32a, 32b, 33a, 33b, it is possible to secure a sufficient mounting strength, and the soldering work is performed because the soldered portion is away from the light valves 11, 21, 31. , The light valves 11, 21, 31 can be protected from heat. However, in the present invention, the fixing between the legs may be performed not by soldering but by using an adhesive instead.

The metal fittings 12, 13, 22, 23, 3
The configuration of the legs in 2 and 33 is not limited to the configuration of the above-described embodiment. For example, FIG. 3 (a) shows the positional relationship between the legs of the brackets 12, 13 and the legs of the brackets 22, 23 and the legs of the brackets 32, 33 in the above-described embodiment, as viewed in the + Y direction. Although these figures were used as these legs, instead of the example shown in FIG.
Can be adopted. 3 (b) and 3 (c), the same or corresponding elements as those in FIG. 3 (a) are denoted by the same reference numerals, and description thereof is omitted.

In the case of FIG. 3A showing the above-described embodiment, the right legs 22a, 22b of the metal fittings 22, 23 in FIG.
23a in the Z direction and the Z of the left legs 22b, 23b.
The position of the direction is different.

In the example shown in FIG. 3B, the legs 12a, 1
With the number of 3a, 32b, and 33b still being two, the Z-direction position of the right leg 22a and the Z-direction position of the left leg 22b of the metal fittings 22, 23 in FIG. ing.

In the example shown in FIG. 3C, the legs 12a, 1
3a, 32b, and 33b are each one,
2 and 23, the position of the right leg 22a in the Z direction in the figure and the position of the left leg 22b in the Z direction are the same. The legs 12a, 13a, 32b, 33b are provided substantially at the center in the Z direction.

Next, a projection type using the light valve mounting apparatus, the light valves 11, 21, 31, and the color synthesizing cross dichroic prism 40 according to the embodiment shown in FIG. 1, FIG. 2 and FIG. An example of the display device will be described with reference to FIG. FIG. 4 is a schematic configuration diagram showing the projection display device.

In this projection type display device, light emitted from a light source 101 comprising a lamp and a concave mirror passes through an ultraviolet absorption filter and an infrared absorption filter (not shown) and is further converted into a substantially parallel light beam by a shaping lens (not shown). Converted, a cross dichroic mirror (corresponding to a color separation optical system) 10 in which the R light reflecting dichroic mirror 102R and the B light reflecting dichroic mirror 102B are arranged in an X-shape.
2 is incident. The cross dichroic mirror 10
The R light, G light, and B light color-separated in 2 travel in the X direction, the −Y direction, and the −X direction, respectively, as shown in FIG.
For each color light, bending mirrors 103R and 104R, bending mirrors 103G and 104G, and bending mirror 103
The direction of the optical axis is changed twice by B and 104B, and each color light is incident on the cross dichroic prism 40 disposed directly below the cross dichroic mirror 102 via the liquid crystal light valves 31, 21 and 11, respectively. I do.
The B light light valve 11, the G light light valve 21, and the R light light valve 31 are attached to the cross dichroic prism 40 by the light valve attaching device described above. Light valves 11 and 12 for each color light
The modulated lights that have passed through 1 and 31 are color-combined by the cross dichroic prism 40, exit the cross dichroic prism 40, and are projected on a screen (not shown) by the projection lens 105.

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment.

For example, in the above-described embodiment, three light valves 11, 21, 31 are mounted near each surface of the cross dichroic prism 40, but the present invention is not limited to the projection type shown in FIG. In the case where a cross dichroic mirror is used instead of the cross dichroic prism 40 in the display device, the present invention can be applied to the case where the light valves 11, 21, 31 are mounted near the cross dichroic mirror. Further, according to the present invention, as in a projection display device disclosed in FIG. 2 of Japanese Patent Application Laid-Open No. 3-296030, a light valve for a luminance signal and a light valve for a color signal are provided near two adjacent surfaces of a polarizing beam splitter. It can also be applied when attaching a light valve.

Further, in the above-described embodiment, the light valve to be mounted is a transmissive light valve, but it is needless to say that a reflective light valve may be used.

[0043]

As described above, according to the present invention,
At least two light valves can be mounted so as to be registration-adjustable such that one side of the two light valves is close to each other and the directions of the two light valves are different from each other, and sufficient mounting strength can be secured. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a light valve mounting device and a cross dichroic prism for color synthesis according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a part of the light valve mounting device according to the embodiment is disassembled.

FIG. 3 is a diagram showing a positional relationship between legs of a metal fitting.

FIG. 4 is a schematic configuration diagram showing an example of a projection display device using the light valve mounting device according to the embodiment.

FIG. 5 is a configuration diagram illustrating an example of a conventional projection display device.

FIG. 6 is an exploded perspective view showing an example of a conventional solid-state imaging device mounting device.

[Description of Signs] 11, 21, 31 Liquid crystal light valve 12, 22, 32 Inner fittings 12a, 12b, 22a, 22b, 32a, 32b Inner fitting legs 13, 23, 33 Outer fittings 13a, 13b, 23a, 23b , 33a, 33b Legs of outer bracket 40 Dichroic prism 41, 42 Plate member

Claims (2)

[Claims] A first light valve and a second light valve, wherein one side of the first light valve and one side of the second light valve are close to each other;
A light valve mounting device for mounting such that the direction of the surface of the light valve is different from the direction of the surface of the second light valve, wherein the first light valve is a first metal fitting. A first metal fitting having a plurality of legs protruding in the direction of the surface of the first light valve on the side of the side of the first light valve and on the side opposite to the first light valve; A second fitting, wherein the first fitting is
A second fitting having a plurality of legs protruding in the direction of the surface of the first light valve at positions respectively corresponding to the plurality of legs of the metal fitting, and a second fitting to which the second light valve is fixed; A third fitting having a plurality of legs protruding in the direction of the surface of the second light valve on the side of the side of the second light valve and on the side opposite to the side, and the base; A fourth metal fitting fixed to the third metal fitting, and having a plurality of legs protruding in the direction of the surface of the second light valve at positions respectively corresponding to the plurality of legs of the third metal fitting. A second metal fitting, wherein the plurality of legs of the first metal fitting and the plurality of legs of the second metal fitting corresponding thereto are respectively fixed, and Multiple legs and corresponding to each The plurality of legs of the fourth metal fitting are fixed to each other, and the leg of the first metal fitting protruding on the side of the side of the first light valve and the second corresponding to the leg are formed. The leg of the third metal fitting, and the leg of the fourth metal fitting corresponding to the leg, the leg of the third metal fitting protruding on the side of the side of the second light valve,
A light valve mounting device, wherein the light valve mounting device intersects at different levels. 2. The light valve mounting device according to claim 1, wherein the fixing between the legs is performed by fixing with a solder or an adhesive.