JP2005018010A - OPTICAL DEVICE, PROJECTOR HAVING THE OPTICAL DEVICE, LIQUID CRYSTAL DISPLAY DEVICE MOUNTING METHOD, AND OPTICAL DEVICE MANUFACTURING METHOD - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical device capable of suppressing deterioration due to a temperature rise of a liquid crystal panel and an incident side polarizing plate, a projector provided with the optical device, a mounting method of a liquid crystal display device, and a manufacturing method of the optical device.
An optical device including a cross dichroic prism 500 and liquid crystal display devices 400R, 400G, and 400B, which is bonded onto a heat conductive member 940, and a plurality of liquid crystal display devices 400 are bonded to each other. A plurality of heat dissipating members 936 for accommodating and holding are provided, and each of the heat dissipating members 936 has a U-shaped block having two adhering side surfaces 936A facing each other and a ceiling 936B connecting the adhering side surfaces. An optical device 700 formed by a body.
[Selection] Figure 2

Description

  The present invention relates to an optical device, a projector including the optical device, a method for mounting a liquid crystal display device, and a method for manufacturing the optical device.

The projector incorporates a cooling mechanism for cooling an optical device including a liquid crystal display device.
2. Description of the Related Art Conventionally, an optical device incorporating such a cooling mechanism is known as shown in FIG. The optical device 10 includes a color synthesis optical system 26 and a liquid crystal display device 14. The color synthesis optical system 26 is constituted by a cross dichroic prism having a light incident surface. An emission-side polarizing plate 28 is attached to the light incident surface of the color synthesis optical system 26.

The liquid crystal display device 14 includes a liquid crystal panel 16 and panel holding frames 20 </ b> A and 20 </ b> B, and is attached to the light incident surface of the color synthesis optical system 26 via metal pins 24.
In FIG. 16, reference numerals 18A and 18B denote dust-proof glass, and 22 denotes a flexible substrate for wiring.

  In such an optical device 10, the liquid crystal panel 16 is cooled by air by forced convection, and the heat of the liquid crystal panel 16 is radiated to the color synthesis optical system (prism) side through the metal pins 24. The cooling efficiency of the liquid crystal panel 16 is increased (for example, Patent Document 1).

Japanese Patent Laid-Open No. 2002-229121 (FIG. 10)

However, in the optical device described above, since the liquid crystal panel 16 and the exit side polarizing plate 28 are connected to each other so as to be able to conduct heat, heat generated by the exit side polarizing plate 28 moves to the liquid crystal panel 16 side. . For this reason, there has been a problem that the heat generated in the exit-side polarizing plate 28 and the heat generated in the liquid crystal panel 16 are merged, and the temperature of the liquid crystal panel 16 rises and is likely to deteriorate.
On the other hand, an optical device has also been proposed in which the metal pin 24 is replaced with a heat insulating pin so as to suppress the merging of the heat generated by the emission side polarizing plate 28 and the heat generated by the liquid crystal panel 16. However, in this case, heat generated in the liquid crystal panel 16 is prevented from being radiated to the color synthesis optical system side, so that there is a problem that the temperature of the liquid crystal panel 16 is easily increased and deteriorated.

  The present invention has been made to solve such a problem, and can effectively dissipate heat generated in a liquid crystal panel, thereby suppressing deterioration due to temperature rise of the liquid crystal panel. An object of the present invention is to provide a projector including the optical device, a method for mounting a liquid crystal display device, and a method for manufacturing the optical device.

(1) An optical device according to the present invention is mounted on a heat conductive member constituting an optical component housing case and has a plurality of light incident surfaces, and each light incident of the color composition optical system. An optical device including a liquid crystal panel and a plurality of liquid crystal display devices each having a panel holding frame, each of which is attached to a surface via a connecting pin, and is bonded onto the thermally conductive member, and the plurality of liquid crystal display devices Are further provided with a plurality of heat radiating members for adhering and holding each of them, each of the heat radiating members having two adhesive side portions facing each other and a ceiling portion connecting the two side surfaces for bonding. It is formed by the block body of.

For this reason, according to the optical device of the present invention, part of the heat generated in the liquid crystal panel is thermally conducted to the heat radiating member via the panel holding frame and is dissipated from the heat radiating member. Further, part of the heat conducted to the heat radiating member is conducted to the heat conductive member, and is dissipated from the heat conductive member.
Therefore, since the heat conduction area and the air cooling area can be increased, heat generated in the liquid crystal panel can be effectively dissipated, and deterioration due to a temperature rise of the liquid crystal panel can be suppressed.

  In this case, if the connecting pin interposed between the color synthesizing optical system and the liquid crystal display device is a metal pin, one of the heat that moves from the light incident surface side of the color synthesizing optical system to the panel holding frame via the metal pin. The portion is thermally conducted to the heat radiating member and is dissipated from the heat radiating member. A part of the heat is thermally conducted from the heat radiating member to the heat conductive member, and is dissipated from the heat conductive member. On the other hand, if the connecting pin is a heat insulating pin, heat generated on the light incident surface side of the color synthesis optical system is prevented from being conducted to the panel holding frame by the heat insulating pin.

(2) In the optical device according to (1), it is preferable that the heat dissipation member is bonded to the liquid crystal display device and the heat conductive member with a heat conductive adhesive.
With this configuration, heat conduction from the panel holding frame to the heat radiating member and heat conduction from the heat radiating member to the heat conductive member are effectively performed, so heat generated in the liquid crystal panel can be dissipated more effectively. It is possible to suppress the deterioration due to the temperature rise of the liquid crystal panel.

(3) In the optical device according to the above (1) or (2), two sets of convex portions arranged in parallel in the thickness direction of the holding frame are provided on each side surface of the panel holding frame, It is preferable that a convex portion that fits into the two sets of convex portion groups is provided on each bonding side surface portion.
With this configuration, when the liquid crystal display device is housed in the heat radiating member, the heat radiating member is guided between the two sets of convex portions in the panel holding frame, and the housing operation of the liquid crystal display device by the heat radiating member is smoothly performed. Is called. Further, the alignment accuracy between the heat radiating member and the liquid crystal display device is increased by fitting the two sets of convex portions with the convex portions of the heat radiating member.

(4) In the optical device according to any one of (1) to (3), the thermally conductive member is formed by a block body that also serves as a fixing block of the color synthesis optical system. preferable.
With this configuration, the number of parts of the optical device is reduced, and the entire device and device assembly work can be simplified.

(5) An optical device according to the present invention is mounted on a heat conductive member constituting an optical component housing case and has a plurality of light incident surfaces, and each light incidence of the color composition optical system. An optical device comprising a plurality of liquid crystal display devices each having a liquid crystal panel and a panel holding frame attached to a surface via a connecting pin, and an incident-side polarizing plate disposed on the incident side of the liquid crystal display device. A plurality of heat radiating members that are bonded onto the heat conductive member, and that each of the plurality of liquid crystal display devices are bonded and accommodated therein, and the incident-side polarizing plate is attached thereto. Is characterized by being formed by a U-shaped block body having two adhering side surfaces facing each other and a ceiling portion connecting these adhering side surfaces.

With the optical device according to the present invention configured as described above, in addition to the heat dissipation effect generated in the liquid crystal panel, the heat generated in the incident-side polarizing plate is also suitably dissipated from the heat dissipation member. The heat radiation member can conduct and dissipate heat from the heat radiating member, can effectively dissipate the heat generated by the incident side polarizing plate, and suppress the deterioration due to the temperature rise of the incident side polarizing plate. Can do.
Further, since the heat radiating member and the incident side polarizing plate can be integrated, the number of parts of the optical device can be further reduced, and further simplification of the entire device and device assembly work can be achieved.
And since it can be set as the structure which integrated even the incident side polarizing plate, the liquid crystal display device, the emission side polarizing plate, and the color synthesis optical system as an optical device, the polarizing plate (incident side polarizing plate, emission side polarization) The cost can be suitably reduced, for example, the contrast of the plate can be easily optimized.

(6) A projector according to the present invention includes an illumination device that emits illumination light, a color separation optical system that separates illumination light emitted from the illumination device into a plurality of color lights, and each color separated by the color separation optical system. In the projector comprising: an optical device that modulates each light to form an image, and synthesizes the images; and a projection optical system that projects and displays the image synthesized by the optical device on a projection surface. Is an optical device according to any one of (1) to (4) above.
For this reason, according to the projector of the present invention, it is possible to effectively dissipate the heat generated in the liquid crystal panel, and since it has an excellent optical device that can suppress deterioration due to a temperature rise of the liquid crystal panel, It becomes an excellent projector capable of further increasing the brightness.

(7) The projector according to the present invention includes an illumination device that emits illumination light, a color separation optical system that separates illumination light emitted from the illumination device into a plurality of color lights, and each color separated by the color separation optical system. In the projector comprising: an optical device that modulates each light to form an image, and synthesizes the images; and a projection optical system that projects and displays the image synthesized by the optical device on a projection surface. Is the optical device described in (5) above.
For this reason, according to the projector of the present invention, the heat generated in the liquid crystal panel and the incident side polarizing plate can be effectively dissipated, and deterioration due to the temperature rise of the liquid crystal panel and the incident side polarizing plate can be suppressed. Since an excellent optical device is provided, the projector can be further improved in brightness.

(8) A method for mounting a liquid crystal display device according to the present invention includes a color combining optical system having a plurality of light incident surfaces mounted on a heat conductive member constituting an optical component housing, and the color combining optical system. In order to assemble an optical device including a liquid crystal panel and a plurality of liquid crystal display devices having a panel holding frame, which are attached to each light incident surface of the system via a connecting pin, A method of attaching the liquid crystal display device to the color synthesis optical system using a plurality of heat radiating members made of a U-shaped block body having a ceiling portion connecting the side surfaces for both the bonding, the color synthesis optical system In attaching each of the plurality of liquid crystal display devices to each light incident surface via the connecting pins, the liquid crystal display device is accommodated and held in the heat dissipation member via an uncured adhesive, A connecting pin in which an uncured adhesive is applied to the adherend is interposed between the color synthesis optical system and the liquid crystal display device, and the uncured adhesive is disposed on the thermally conductive member via the uncured adhesive. After placing the heat dissipating member, and then performing focus / alignment adjustment of the liquid crystal panel, the uncured adhesive is cured, whereby the liquid crystal display device and the heat conductive member are A heat radiating member is attached.

Therefore, according to the optical device obtained by the liquid crystal display mounting method of the present invention, a part of the heat generated in the liquid crystal panel is thermally conducted to the heat radiating member through the panel holding frame and is dissipated from the heat radiating member. The Further, part of the heat conducted to the heat radiating member is conducted to the heat conductive member, and is dissipated from the heat conductive member.
Therefore, since the heat conduction area and the air cooling area can be increased, heat generated in the liquid crystal panel can be effectively dissipated, and deterioration due to a temperature rise of the liquid crystal panel can be suppressed.

  Furthermore, according to the mounting method of the liquid crystal display device of the present invention, the heat radiating member is formed in the same process as mounting the liquid crystal display device to the color synthesizing optical system by performing the focus alignment adjustment and then curing the adhesive. The liquid crystal display device can be thermally connected to the heat conductive member through the connector. For this reason, when the liquid crystal display device is thermally connected to the heat conductive member, the liquid crystal display device and the color synthesizing optical system are not misaligned. There is also an effect that an optical device capable of suppressing deterioration can be assembled.

(9) A method of manufacturing an optical device according to the present invention includes a color combining optical system having a plurality of light incident surfaces, which is mounted on a heat conductive member constituting an optical component housing case, and the color combining optical system. And a plurality of liquid crystal display devices each having a liquid crystal panel and a panel holding frame, and an incident-side polarizing plate disposed on the incident side of the liquid crystal display device. In order to assemble the apparatus, a plurality of heat radiating members each having a U-shaped block body having two adhering side surfaces facing each other and a ceiling portion connecting these adhering side surfaces are used in the color combining optical system. A method of manufacturing an optical device to which the liquid crystal display device and the incident-side polarizing plate are attached, wherein a connecting pin in which an uncured adhesive is applied to a bonded portion is connected between the color synthesis optical system and the liquid crystal display device. Intervening in, After adjusting the focus and alignment of the liquid crystal panel, the uncured adhesive is cured and the liquid crystal display device is fixed to the color synthesis optical system, and the heat dissipation member is interposed via the adhesive. An incident-side polarizing plate is installed and fixed, and the liquid crystal display device is housed and held in a heat dissipation member via an uncured adhesive, and the heat dissipation member is transferred to the heat conduction via an uncured adhesive. The heat dissipating member is placed on the conductive member and the angle adjustment of the incident-side polarizing plate is performed, and then the uncured adhesive is cured, so that the heat dissipation member with respect to the liquid crystal display device and the heat conductive member It is characterized by attaching.

  According to the method for manufacturing an optical device of the present invention, a heat radiating member provided with a fixed incident-side polarizing plate is installed on a liquid crystal display device that has already been subjected to focus alignment adjustment. The heat radiation member can be attached to the liquid crystal display device and the heat conductive member by curing the adhesive after adjusting the angle. This makes it possible to minimize displacement of the liquid crystal display device and the incident-side polarizing plate, and in the same process as attaching the liquid crystal display device to the color synthesizing optical system, The device can be thermally connected to the thermally conductive member. Moreover, since the structure of the lower part of a light guide can be made into a simple shape, cost reduction by simplification of a member shape can be aimed at.

  Further, as in the mounting method described above, the positional accuracy is maintained because the liquid crystal display device and the color combining optical system do not shift when the liquid crystal display device is thermally connected to the heat conductive member. It is possible to assemble an optical device that can suppress deterioration of the liquid crystal panel due to temperature rise.

  Furthermore, since the angle adjustment of the incident side polarizing plate can be performed in a state where the incident side polarizing plate is installed in the optical device, the adjusting device and adjusting jig used for the angle adjustment should have a simple configuration. There is also an effect that it is possible to reduce the cost.

  And the optical apparatus obtained by this manufacturing method and the projector provided with the said optical apparatus can enjoy the above-mentioned effect | action and effect.

Hereinafter, an optical device to which the present invention is applied, a projector including the optical device, a method for mounting a liquid crystal display device, and a method for manufacturing an optical device will be described based on the embodiments shown in the drawings.
[First Embodiment]
First, a projector provided with an optical device according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a plan view showing an optical system of a projector according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of the optical device according to the embodiment of the present invention. 2A is a front view, FIG. 2B is a plan view, and FIG. 2C is a side view. FIG. 3 is a perspective view showing a heat radiating member of the optical device according to the embodiment of the present invention. FIG. 4 is an explanatory view showing the heat dissipating member in FIG. 4 (a) is a front view, FIG. 4 (b) is a side view, FIG. 4 (c) is a bottom view, and FIG. 4 (d) is an AA cross-sectional view of FIG. 4 (a). It is. FIG. 5 is a perspective view showing a heat conductive member on which the optical device according to the embodiment of the present invention is placed. FIG. 6 is an explanatory view showing the thermally conductive member in FIG. FIG. 6A is a plan view, and FIG. 6B is a side view. FIG. 7 is a perspective view of a fixing block of the color synthesis optical system in the optical device according to the embodiment of the present invention. FIG. 7A is a perspective view of the fixing block as viewed from above, and FIG. 7B is a perspective view of the fixing block as viewed from below. FIG. 8 is an explanatory diagram showing a fixing block of the color synthesis optical system in FIG. FIG. 8A is a plan view, and FIG. 8B is a front view.

In FIG. 1, a projector denoted by reference numeral 1 includes an illumination optical system 100, a color separation optical system 200, a relay optical system 300, three liquid crystal display devices 400R, 400G, and 400B, and a color synthesis optical system (cross dichroic prism). ) 500 and the projection optical system 600, and is housed in an optical component housing (not shown).
The components of each optical system are arranged in a substantially horizontal direction around the cross dichroic prism 500.

  The illumination optical system 100 includes a light source 110, a first lens array 120, a second lens array 130, a polarization conversion element 140, and a superimposing lens 150. The light beam emitted from the light source 110 is divided into a plurality of minute partial light beams by the first lens array 120, and each partial light beam is illuminated by the second lens array 130 and the superimposing lens 150. , 400G, 400B are superimposed on the light incident surface.

The first lens array 120 and the second lens array 130 are formed by arranging small lenses in a matrix.
The polarization conversion element 140 has a function of aligning non-polarized light with polarized light having a polarization direction that can be used in the three liquid crystal display devices 400R, 400G, and 400B.

  The color separation optical system 200 has a function of separating the illumination light emitted from the illumination optical system 100 into three colors of illumination light having different wavelength ranges. The first dichroic mirror 210 transmits substantially red light (hereinafter referred to as “R light”), substantially green light (hereinafter referred to as “G light”), and substantially blue light (hereinafter referred to as “B light”). Reflect. The R light transmitted through the first dichroic mirror 210 is reflected by the reflection mirror 230, passes through the field lens 240R, and illuminates the R liquid crystal display device 400R.

  The field lens 240R condenses the partial light beams from the illumination optical system 100 so as to illuminate the liquid crystal display device 400R. Usually, each partial light beam is set to be a substantially parallel light beam. The field lenses 240G and 350 disposed in front of the other liquid crystal display devices 400G and 400B are configured similarly to the field lens 240R.

  Of the G light and B light reflected by the first dichroic mirror 210, the G light is further reflected by the second dichroic mirror 220 and passes through the field lens 240G to illuminate the G liquid crystal display device 400G. On the other hand, the B light passes through the second dichroic mirror 220, passes through the relay optical system 300, and illuminates the B liquid crystal display device 400B.

  The relay optical system 300 includes an incident side lens 310, an incident side reflection mirror 320, a relay lens 330, an emission side reflection mirror 340, and a field lens 350. The B light emitted from the color separation optical system 200 is converged in the vicinity of the relay lens 330 by the incident side lens 310 and diverges toward the field lens 350 (exit side reflection mirror 340). The size of the light beam incident on the field lens 350 is set to be approximately equal to the size of the light beam incident on the incident side lens 310.

  The liquid crystal display devices 400R, 400G, and 400B are composed of, for example, three transmissive liquid crystal display devices, and are arranged on the incident side of the cross dichroic prism 500 in correspondence with RGB color lights. The liquid crystal display devices 400R, 400G, and 400B are accommodated and held in a heat radiating member 936, which will be described later, via an ultraviolet curable heat conductive adhesive. Thereby, heat conduction from the liquid crystal display devices 400R, 400G, and 400B (panel holding frame) to the heat dissipation member 936 is effectively performed. Incident side polarizing plates 918R, 918G, and 918B are arranged on the incident side of these liquid crystal display devices 400R, 400G, and 400B, and emission side polarizing plates 920R, 920G, and 920B are arranged on the emission side, respectively.

  Since the liquid crystal display devices 400R, 400G, and 400B have substantially the same configuration, the description of the configuration of the liquid crystal display devices 400G and 400B is omitted, and only the configuration of the liquid crystal display device 400R is described. As shown in FIG. 2, the liquid crystal panel 400r and the panel holding frame 902 are generally configured.

  The liquid crystal panels and the panel holding frame constituting the liquid crystal display devices 400G and 400B will be described as the liquid crystal panels 400g and 400b and the panel holding frame 902, respectively. Further, constituent members such as a flexible substrate connected and coupled to the liquid crystal display devices 400G and 400B will be described with the same or equivalent reference numerals (differences between r, g, and b) as those of the liquid crystal display device 400R.

The liquid crystal panel 400r has a liquid crystal layer two glass substrates facing each other via a (not shown) (both not shown) are connected to the flexible board 400r ₁ for wiring. Then, the color light incident on each light incident surface is converted into light corresponding to the corresponding color signal (image signal), and the converted light is emitted as transmitted light.

As shown in FIG. 2, the panel holding frame 902 is attached to the light incident surface of the cross dichroic prism 500 via four heat insulating pins 938 as connecting pins so as to accommodate and hold the liquid crystal panel 400r therein. It is configured. And the whole is formed with the high heat conductive members, such as an aluminum alloy. Pin insertion holes 902a _{1 to} 902a ₄ through which the four heat insulating pins 938 are inserted are provided at the corners of the panel holding frame 902. Each set of side surfaces of the panel holding frame 902 is provided with two sets of convex portions 902A and 902B arranged in parallel in the thickness direction of the holding frame.

The three heat dissipating members 936 that house and hold the liquid crystal display devices 400R, 400G, and 400B, respectively, have two adhesive side portions facing each other, as shown in FIGS. 3 and 4A to 4C. 936A and a U-shaped block body made of a metal material such as an aluminum alloy having a ceiling portion 936B for connecting both side surfaces 936A for bonding. And it is attached to the heat conductive member 940 which comprises the housing | casing for optical component accommodation (not shown) via the ultraviolet curable heat conductive adhesive. Thereby, heat conduction from the heat radiation member 936 to the heat conductive member 940 is effectively performed.
In addition, although the heat radiating member 936 is originally attached to all the liquid crystal display devices 400R, 400G, and 400B, FIG. 2 shows only the liquid crystal display device 400R.

  The thermal conductive adhesive used for bonding the heat dissipation member 936 to the liquid crystal display devices 400R, 400G, 400B and the thermal conductive member 940 has a high elongation rate, a low glass transition point, and a thermal linear expansion close to that of aluminum. A rate adhesive is used. As the adhesive, an ultraviolet curable adhesive, a silicon-based room temperature curable adhesive, a thermosetting adhesive, or the like can be preferably used.

  Convex portions 936a that extend in the vertical direction and fit into both sets of convex portion groups 902A and 902B in the panel holding frame 902 are provided on the inner side surfaces of the both side surfaces 936A for bonding. Thus, when the liquid crystal display devices 400R, 400G, and 400B are accommodated in the heat radiating member 936, the heat radiating member 936 is guided between the two sets of convex portions 902A and 902B in the panel holding frame 902, and the liquid crystal display device 400R by the heat radiating member 936 is guided. , 400G, 400B are smoothly accommodated. Further, the fitting of the pair of convex portions 902A and 902B and the convex portion 936a of the heat dissipation member 936 prevents the liquid crystal display devices 400R, 400G, and 400B from coming off in the focus direction.

The cross dichroic prism 500 has an R light reflecting dichroic surface 510R that reflects R light and a B light reflecting dichroic surface 510B that reflects B light. A prism fixing plate (fixing block) 950 is provided on the heat conductive member 940. Is attached through. The R light reflecting dichroic surface 510R and the B light reflecting dichroic surface 510B form a dielectric multilayer film that reflects R light and a dielectric multilayer film that reflects B light in an approximately X shape at the interface of four right-angle prisms. Is provided.
Then, the converted light of the three colors is synthesized by the two reflecting dichroic surfaces 510R and 510B, and light for displaying a color image is generated. The combined light generated in the cross dichroic prism 500 is emitted toward the projection lens 600.
Emission-side polarizing plates 920R, 920G, and 920B are attached to the light incident surface of the cross dichroic prism 500.

As shown in FIGS. 5 and 6, the heat conductive member 940 has a quadrangular frame portion 940A that opens in the vertical direction and two pairs of leg portions 940B ₁ and 940B ₂ that are connected to the frame portion 940A. ing. The frame portion 940 </ b> A has a stepped surface 940 </ b> A ₁ inside, and is configured to place a prism fixing plate 950 (described later) on the stepped surface 940 </ b> A ₁ . The leg portions 940B ₁ and 940B ₂ are configured to mount and attach a heat dissipating member 936. That is, the leg 940B _1, the heat dissipation member 936 corresponding to the liquid crystal display device 400G is attached. In addition, heat radiation members 936 corresponding to the liquid crystal display devices 400R and 400B are attached to the left leg portions 940B ₁ and 940B ₂ and the right leg portions 940B ₁ and 940B ₂ as viewed from the projection optical system side.

Prism fixing plate 950, as shown in FIGS. 7 and 8 has a stepped surface 950A ₁ abutting the stepped surface 940A ₁ of the thermally conductive member 940, fitted to a portion of the thermally conductive member 940 It is formed by the block body which joins. A projecting portion 950 </ b> A projecting upward is formed on the upper end surface of the prism fixing plate 950. Thereby, the position of the cross dichroic prism 500 is adjusted and attached to the upper end surface of the prism fixing plate 950. A screw hole 950B ₁ for attaching an optical component housing case is provided in the central portion of the lower end face of the prism fixing plate 950. In addition, a positioning convex portion 950B ₂ protruding downward is provided at a corner portion of the lower end surface of the prism fixing plate 950.

  The projection optical system 600 is disposed on the exit side of the cross dichroic prism 500. The image synthesized by the cross dichroic prism 500 is configured to be projected and enlarged on a screen (projected image) as a display image.

With the above configuration, in the projector 1 according to the present embodiment, part of the heat generated in the liquid crystal panels 400r, 400g, and 400b is thermally conducted to the heat radiating member 936 via the panel holding frame 902, and is dissipated from the heat radiating member 936. Is done. Further, a part of the heat conducted to the heat radiating member 936 is conducted to the heat conductive member 940 and is dissipated from the heat conductive member 940.
Therefore, in this embodiment, since the heat conduction area and the air cooling area can be increased, the heat generated in the liquid crystal panels 400r, 400g, and 400b can be effectively dissipated, and the liquid crystal panels 400r, 400g, and 400b. Deterioration due to temperature rise can be suppressed.

  In the present embodiment, since the U-shaped heat radiation member 936 that accommodates and holds the liquid crystal display devices 400R, 400G, and 400B is mounted on the heat conductive member 940, the cross dichroic prism 500 and the liquid crystal display device are provided. There is also an effect that the rigidity of the optical device having 400R, 400G, and 400B can be increased.

  Further, in the present embodiment, the liquid crystal display devices 400R, 400G, and 400B are attached to the heat dissipation member 936 by an adhesive, so that the liquid crystal panels 400r, 400g, and 400b are attached without applying an external force. Thus, it is possible to prevent occurrence of pixel shift when the liquid crystal display devices 400R, 400G, and 400B are attached.

Next, a method for mounting the liquid crystal display device according to the embodiment of the present invention will be described with reference to FIGS. FIG. 9 is a flowchart for explaining a method of mounting the liquid crystal display device according to the embodiment of the present invention.
The mounting method of the liquid crystal display device according to the present embodiment includes “accommodating and holding the liquid crystal display device”, “arrangement of the connecting pins and the heat radiating member”, “focus and alignment adjustment”, and “attaching the heat radiating member and the liquid crystal display device”. Since each process is performed sequentially, each of these processes will be described sequentially.

  It is assumed that the cross dichroic prism 500 is attached via a prism fixing plate 950 on the heat conductive member 940 in the optical component housing case installed in the position adjustment system apparatus. In addition, the liquid crystal panels 400r, 400g, and 400b are fixed in the panel holding frames 902.

“Accommodating and holding liquid crystal display devices”
First, an ultraviolet curable heat conductive adhesive is applied between the two convex portions 902A and 902B on each side portion of the panel holding frame 902. In this case, the ultraviolet curable heat conductive adhesive applied between the two convex portion groups 902A and 902B remains uncured.

  Next, the convex portion 936a of the both side surfaces 936A for bonding of the heat dissipation member 936 is inserted between the convex portion groups 902A and 902B from the upper side to the lower side. In this case, when the operation of inserting the convex portions 936a between the convex portion groups 902A and 902B is finished, the liquid crystal display devices 400R, 400G, and 400B are respectively uncured ultraviolet curable heat conductive adhesives in the heat dissipation member 936. It is accommodated and held via the agent (step S1 in FIG. 9).

"Placement of connecting pins and heat dissipation members"
First, an ultraviolet curable heat conductive adhesive is applied to both the incident / exit-side end portions (bonded portions) of the connecting pins (heat insulating pins) 938 and the lower end surfaces of both side surfaces 936A for bonding in the heat dissipation member 936. In this case, the ultraviolet curable heat conductive adhesive applied to the both side surfaces 936 </ b> A of the heat radiating member 936 remains uncured.

Next, the heat insulating pins 938 are inserted into the pin insertion holes 902a _{1 to} 902a ₄ of the panel holding frame 902 from the incident side of the holding frame 902, and the light incident surface of the cross dichroic prism 500 is brought into contact with the exit side end of the heat insulating pins 938. In addition, the heat radiating member 936 is placed on the heat conductive member 940 (step S2 in FIG. 9). In this case, when the heat insulation pin 938 comes into contact with the light incident surface of the cross dichroic prism 500, the heat insulation pin 938 is interposed between the cross dichroic prism 500 and the liquid crystal display devices 400R, 400G, and 400B.

"Focus / Alignment Adjustment"
The position adjustment system device is driven to perform focus / alignment adjustment of the liquid crystal panels 400r, 400g, and 400b (step S3 in FIG. 9).
Note that the focus / alignment adjustment may be performed simultaneously or sequentially on the three liquid crystal panels 400r, 400g, and 400b.

"Attaching heat dissipation materials and liquid crystal display devices"
Uncured applied to the incident / exit side end of the heat insulation pin 938 and the both convex portions 902A and 902B on both side surfaces of the panel holding frame 902, and further to the lower end surface of the both side surfaces 936A for bonding of the heat dissipation member 936. The ultraviolet curable heat conductive adhesive is cured with ultraviolet rays, whereby the liquid crystal display devices 400R, 400G, and 400B are bonded to the respective light incident surfaces of the cross dichroic prism 500 via the heat insulating pins 938, and the heat dissipation member 936 is attached. It adheres to the panel holding frame 902 and the heat conductive member 940 (step S4 in FIG. 9).
In this manner, the liquid crystal display devices 400R, 400G, and 400B accommodated and held in the heat dissipation member 936 can be attached to the cross dichroic prism 500.

  Therefore, according to the present embodiment, the heat radiating member is formed in the same process as attaching the liquid crystal display devices 400R, 400G, and 400B to the cross dichroic prism 500 by curing the adhesive after performing the focus / alignment adjustment. The liquid crystal display devices 400R, 400G, and 400B can be thermally connected to the heat conductive member 940 via the 936. Therefore, when the liquid crystal display devices 400R, 400G, 400B are thermally connected to the heat conductive member 940, the liquid crystal display devices 400R, 400G, 400B and the cross dichroic prism 500 are not misaligned. It is possible to assemble an optical device that can suppress deterioration of the liquid crystal panels 400r, 400g, and 400b due to temperature rise while maintaining accuracy.

[Second Embodiment]
Next, another embodiment of the optical device 700 to which the present invention is applied and a method for manufacturing the optical device 700 will be described. In the following description, parts or members that are the same as those already described are assigned the same reference numerals, and descriptions thereof are omitted.
The optical device 700 according to this embodiment is connected to each of the two bonding side surface portions 936A of the heat dissipation member 936, and the incident-side polarizing plate mounting portion 936D is integrated with the optical device 700 according to the above-described embodiment. The difference is that the incident side polarizing plate 918 is provided with respect to the incident side polarizing plate mounting portion 936D.

FIG. 10 is an explanatory diagram of the optical device 700 according to the second embodiment of the present invention. In the optical device 700 shown in FIG. 2, the incident-side polarizing plate 918 is made incident on the liquid crystal display device 400 with respect to the heat radiating member 936. It is the figure which showed the aspect attached to the side. Here, Fig.10 (a) is a front view, FIG.10 (b) is a top view, FIG.10 (c) shows a side view, respectively.
Since the incident side polarizing plates 918R, 918G, and 918B have substantially the same configuration, the description of the configuration of the incident side polarizing plates 918G, 918B is omitted as in FIG. Only the configuration will be described.
FIG. 11 is a perspective view showing a heat radiating member 936 of the optical device 700 according to the second embodiment of the present invention, and FIG. 12 is an explanatory view of the heat radiating member 936 shown in FIG. It is a front view, FIG.12 (b) is a side view, FIG.12 (c) is a bottom view, FIG.12 (d) is AA sectional drawing of Fig.12 (a). FIG. 13 is an explanatory diagram (FIG. 13A is a plan view and FIG. 13B is a side view) of a heat conducting member 940 of an optical device 700 according to the second embodiment of the present invention.

As shown in FIG. 10, in the present embodiment, the incident side polarizing plate 918 </ b> R is located on the incident side of the liquid crystal display device 400, with respect to the incident side polarizing plate mounting portion 936 </ b> D formed on the heat dissipation member 936. Is provided.
Here, the incident-side polarizing plate 918R transmits only polarized light in a certain direction out of each color light separated by the color separation optical system 200 and absorbs other light beams, and is polarized on a substrate such as sapphire glass. A film is attached.
Further, the incident-side polarizing plate 918R is attached to the incident-side polarizing plate mounting portion 936D provided in the heat dissipation member 936. Specifically, the adhesive is applied to the adhesive portion 936d provided in the mounting portion 936D. It will be fixed and integrated through. As an adhesive used for bonding between the incident side polarizing plate 918R and the bonding portion 936d, a heat conductive adhesive is preferably used. For example, a silicon-based room temperature curable adhesive, a thermosetting adhesive, or the like is preferable. Can be used.

Further, as shown in FIGS. 11 and 12 (a) to 12 (d), the heat dissipating member 936 is, for example, two adhering side surfaces 936A facing each other, and these, as in the first embodiment described above. Are formed by a U-shaped block body made of a metal material such as an aluminum alloy having a ceiling portion that connects the side surfaces 936A for both of the bonding. In this embodiment, in order to install the incident side polarizing plate 918R, A substantially L-shaped incident-side polarizing plate mounting portion 936D connected to each of the two bonding side surfaces 936A is formed integrally with the bonding side surfaces 936A.
As described above, the incident-side polarizing plate mounting portion 936D is provided with the bonding portion 936d, and the incident-side polarizing plate 918R is fixedly integrated by interposing an adhesive with the bonding portion 936d. Will be.
In the present embodiment, dowels 937 for connecting to the heat conducting member 940 are respectively provided at the two lower portions of the both side surfaces 936A for bonding of the heat radiation member 936. Further, as shown in FIG. 13, holes 939 for inserting and fitting the dowels are also arranged at corresponding portions of the heat conducting member 940.

Next, a method for manufacturing the optical device 700 according to the embodiment of the present invention will be described with reference to FIGS. FIG. 14 is a flowchart illustrating a method for manufacturing the optical device 700 according to the embodiment of the present invention.
The manufacturing method of the optical device 700 in this embodiment includes “temporary fixing of the liquid crystal display device to the cross dichroic prism”, “focus / alignment adjustment of the liquid crystal panel”, “fixing of the liquid crystal display device”, “incident side polarization on the heat radiating member” “Plate is fixed”, “Holding and holding the liquid crystal display device in the heat radiating member, and placing the heat radiating member on the heat conductive member”, “Adjusting the angle of the incident side polarizing plate”, and “ Each means of "fixing" will be implemented.

  The cross dichroic prism 500, which is a color synthesis optical system, is attached via a prism fixing plate 950 on a heat conductive member 940 in an optical component storage housing (not shown) installed in the position adjustment system apparatus. It is assumed that the liquid crystal panels 400r, 400g, and 400b are fixed in the panel holding frames 902 as in the first embodiment.

"Temporary fixing of liquid crystal display device to cross dichroic prism"
An ultraviolet curable heat conductive adhesive is applied to both end portions (bonded portions) of the connection pin (heat insulating pin) 938 on the incident / exit side. In this case, the ultraviolet curable heat conductive adhesive applied to both the incident / exit-side end portions (bonded portions) of the connecting pin (heat insulating pin) 938 remains uncured.
Next, the connecting pin 938 is inserted into the pin insertion holes 902a _{1 to} 902a ₄ of the panel holding frame 902 from the incident side of the holding frame 902, and the exit side of the connecting pin 938 is incident on the light incident surface of the cross dichroic prism 500. The end is brought into contact and temporarily fixed. In this case, when the connecting pin 938 contacts the light incident surface of the cross dichroic prism 500, the connecting pin 938 is interposed between the cross dichroic prism 500 and the liquid crystal display devices 400R, 400G, and 400B (FIG. 14 step 1).

"LCD panel focus and alignment adjustment"
When the liquid crystal display devices 400R, 400G, and 400B are temporarily fixed, the focus / alignment of the liquid crystal panels 400r, 400g, and 400b is adjusted using the position adjustment system (step S2 in FIG. 14).
The focus / alignment adjustment may be performed simultaneously for the three liquid crystal panels 400r, 400g, and 400b, or the adjustment may be performed sequentially.

“Fixing the LCD”
When the focus / alignment adjustment for the three liquid crystal panels 400r, 400g, and 400b is completed, the uncured UV curable thermal conductive adhesive applied to the entrance and exit side ends of the heat insulating pins 938 is UV cured. By doing so, the liquid crystal display devices 400R, 400G, and 400B are bonded to the respective light incident surfaces of the cross dichroic prism 500 via the heat insulating pins 938 (step S3 in FIG. 14).
In this way, the liquid crystal display devices 400R, 400G, and 400B are fixedly attached to the cross dichroic prism 500.

“Fix the incident-side polarizing plate to the heat dissipation member”
A thermosetting heat conductive adhesive is applied to the bonding portion 936d formed on the incident side polarizing plate mounting portion 936D provided on the heat dissipation member 936, and the incident side polarizing plates 918R, 918G, and 918B are fixed. (Step S4 in FIG. 14).

“Accommodating and holding the liquid crystal display device in the heat radiating member, and placing the heat radiating member on the heat conductive member”
An ultraviolet curable heat conductive adhesive is applied to the lower end surfaces of the both side surfaces 936 </ b> A for the heat radiation member 936. In this case, the ultraviolet curable heat conductive adhesive applied to the both side surfaces 936 </ b> A of the heat radiating member 936 remains uncured.
In addition, a UV curable heat conductive adhesive is applied between the two convex portions 902A and 902B on each side surface of the panel holding frame 902 constituting the liquid crystal display device 400, which is fixedly attached to the cross dichroic prism 500. To do. In this case, the ultraviolet curable heat conductive adhesive applied to both convex portions 902A and 902B remains uncured.

  And while inserting the convex part 936a in both the side parts 936A for adhesion of the heat radiating member 936 from both the convex part groups 902A and 902B of the panel holding frame 902 from above to below, an uncured adhesive is used. The applied dowel 937 is inserted into the hole 939 of the heat conducting member 940, and the heat radiating member 936 is placed on the heat conducting member 940 (step S5 in FIG. 14). In this case, when the insertion operation between the convex portions 902A and 902B of the convex portions 936a is completed, the liquid crystal display devices 400R, 400G, and 400B respectively apply an uncured ultraviolet curable adhesive inside the heat dissipation member 936. The heat radiating member 936 is placed on the heat conductive member 940 via an uncured ultraviolet curable adhesive.

"Adjusting the angle of the polarizing plate on the incident side"
The angle adjustment of the incident side polarizing plates 918R, 918G, and 918B is performed using the angle adjusting device and jig (step S6 in FIG. 14).
Similarly to the focus alignment of the liquid crystal panels 400r, 400g, and 400b, the three incident-side polarizing plates 918R, 918G, and 918B may be performed simultaneously. You may make it perform semi-secondarily.

FIG. 15 is a schematic view showing an aspect of an angle adjustment jig 800 for adjusting the angle of the incident-side polarizing plate. The angle adjusting jig 800 has a basic configuration including a fixed base 810, a micrometer head 811, a light source unit 820, and an image camera 830.
An example of means for sequentially adjusting the angle of the incident-side polarizing plate 918G using the angle adjusting jig 800 shown in FIG. 15 will be described. First, the above-described “holding and holding the liquid crystal display device in the heat radiating member, and After the optical device 700 configured by the means “placed on a heat conductive member” is placed on the fixing base 810, the fixture 812 is tightened to fix the optical device 700 on the fixing base 810.
Next, light is irradiated from the light source unit 820 toward the incident-side polarizing plate 918G, the light is incident on the incident-side polarizing plate 918G, and the micrometer head 811 is based on the image captured by the image camera 830. Is finely adjusted, the heat dissipating member 936 is moved, and the angle of the incident-side polarizing plate 918G may be adjusted.
As described above, in the present embodiment, the angle adjustment of the incident side polarizing plates 918R, 918G, and 918B can be performed in a state where the incident side polarizing plates 918R, 918G, and 918B are installed in the optical device 700. The adjustment device and adjustment jig used for angle adjustment can have a simple configuration, and the angle of the incident angle polarizing plate 918 can be adjusted by a simple means.

"Fixing of liquid crystal display device and heat dissipation member"
When the angle adjustment of the incident side polarizing plates 918R, 918G, and 918B is finished, the adhesive between the dowel 937 of the heat radiating member 936 and the hole 939 of the heat conductive member 940 is cured to make the heat radiating member 936 heat conductive. Fixed to the member 940. By fixing the heat dissipating member 936 to the heat conducting member 940, the incident side polarizing plates 918R, 918G, and 918B fixed to the heat dissipating member 936 can also be fixed to the heat conducting member 940 via the heat dissipating member 936.
In addition, it is applied to the lower end face of both the projections 902A and 902B on the incident / exit side end of the heat insulation pin 938 and the both sides of the panel holding frame 902, and the lower end face of the both side faces 936A of the heat radiation member 936. By curing the cured ultraviolet curable heat conductive adhesive with ultraviolet rays, the liquid crystal display devices 400R, 400G, and the like through the heat insulating pins to each light incident surface of the cross dichroic prism 500 that is a color synthesis optical system. And 400B are bonded together, and the heat radiating member 936 is bonded to the panel holding frame 902 and the heat conductive member 940 of the liquid crystal display devices 400R, 400G, and 400B and fixedly installed (step 7 in FIG. 14).

  As described above, the incident-side polarizing plates 918R, 918G, and 918B are fixed to the heat dissipation member 936, and the heat dissipation member 936 is attached to the liquid crystal display devices 400R, 400G, 400B, and the heat conductive member 940. it can. In this way, the liquid crystal display devices 400R, 400G, and 400B and the incident-side polarizing plates 918R, 918G, and 918B can be attached to the cross dichroic prism 500 that is a color combining optical system. The optical device 700 according to the above can be manufactured.

With the above configuration, the projector 1 provided with the optical device 700 according to the present embodiment has one of the heat generated in the incident side polarizing plates 918R, 918G, and 918B in addition to the effects described in the first embodiment. The portion is conducted to the heat radiating member 936 and is dissipated from the heat radiating member 936. Further, part of the heat conducted by the heat radiating member 936 is also conducted to the heat conductive member 940, and is suitably dissipated from the heat conductive member 940.
Therefore, in this embodiment, in addition to the heat generated in the liquid crystal panels 400r, 400g, and 400b, the heat generated in the incident-side polarizing plates 918R, 918G, and 918B can be effectively dissipated, and the liquid crystal panel 400r. , 400g, 400b, and the incident side polarizing plates 918R, 918G, and 918B can be suitably prevented from being deteriorated due to a temperature rise.

Further, since the heat radiation member 936 and the incident side polarizing plates 918R, 918G, and 918B can be integrated, the number of parts of the optical device 700 is further reduced, and the entire device and device assembly work are further simplified. be able to.
Also, the optical device 700 can be configured such that the incident-side polarizing plate 918, the liquid crystal display device 400, the emission-side polarizing plate 920, and the color synthesis optical system (cross dichroic prism 500) are integrated. For this reason, for example, the cost of the polarizing plate (incident side polarizing plate 918, exit side polarizing plate 920) can be easily optimized, and cost reduction can be suitably achieved.

The manufacturing method of the optical device 700 according to this embodiment includes the heat dissipation member 936 provided with the incident-side polarizing plates 918R, 918G, and 918B fixed to the liquid crystal display device 400 that has already been subjected to focus / alignment adjustment. By installing and adjusting the angle of the incident-side polarizing plates 918R, 918G, and 918B, and then curing the uncured adhesive, the heat dissipation member 936 can be removed from the liquid crystal display device 400 and the heat conductive member 940. It can be attached.
Accordingly, the positional deviation between the liquid crystal display device 400 and the incident side polarizing plate 918 can be minimized, and heat can be dissipated in the same process as attaching the liquid crystal display device 400 to the cross dichroic prism 500 which is a color synthesis optical system. The incident-side polarizing plate 918 and the liquid crystal display device 400 can be thermally connected to the heat conductive member 940 through the member 936. In addition, since the structure of the lower part of the light guide can be made simple, the cost can be reduced by simplifying the member shape.

  Similar to the above-described mounting method, when the liquid crystal display device 400 is thermally connected to the heat conductive member 940, the liquid crystal display device 400 and the cross dichroic prism 500, which is a color synthesis optical system, are not misaligned. Therefore, it is possible to manufacture the optical device 700 that can suppress the deterioration due to the temperature rise of the liquid crystal panels 400r, 400g, and 400b while maintaining the positional accuracy.

  Furthermore, as described above, the angle adjustment of the incident side polarizing plates 918R, 918G, and 918B can be performed in a state where the incident side polarizing plates 918R, 918G, and 918B are installed in the optical device 700. There is also an effect that the adjusting device and the adjusting jig used for the adjustment can have a simple configuration, which can also reduce the cost.

  And the optical apparatus 700 obtained by this manufacturing method and the projector 1 provided with the said optical apparatus 700 can enjoy the above-mentioned effect | action and effect suitably.

  In the above-described embodiment, the case where the heat conductive member 940 and the prism fixing plate 950 are separate members has been described. However, the present invention is not limited to this, and the heat conductive member also serves as the prism fixing plate. Of course, it may be a block body. Even in this case, the number of parts of the optical device 700 is reduced, and the entire device and device assembly work can be simplified.

Further, in the above-described embodiment, the case where an ultraviolet curable heat conductive adhesive is used for attaching the heat dissipation member 936 to the panel holding frame 902 and the heat conductive member 940 has been described, but the present invention is not limited thereto. Alternatively, a thermosetting heat conductive adhesive or a room temperature curable heat conductive adhesive may be used.
In addition, the specific structure and shape in the implementation of the present invention may be other structures and the like as long as they do not interfere with the object and effect of the present invention.

  The optical device of the present invention, a projector provided with the optical device, a method of mounting a liquid crystal display device, and a method of manufacturing the optical device are provided for use in multimedia presentations at conferences, academic conferences, exhibitions, etc. It can be used as a projector provided with the apparatus, a method for mounting a liquid crystal display device, and a method for manufacturing an optical device.

FIG. 2 is a plan view showing an optical system of the projector according to the embodiment of the invention. Explanatory drawing which shows the optical apparatus which concerns on embodiment of this invention. The perspective view which shows the heat radiating member of the optical apparatus which concerns on embodiment of this invention. Explanatory drawing of the heat radiating member in FIG. The perspective view which shows the heat conductive member of the optical apparatus which concerns on embodiment of this invention. Explanatory drawing of the heat conductive member in FIG. 1 is a perspective view of a fixing block of a color synthesis optical system in an optical device according to an embodiment of the present invention. Explanatory drawing of the block for fixation in FIG. 6 is a flowchart for explaining a method for mounting the liquid crystal display device according to the embodiment of the present invention. Explanatory drawing which shows the optical apparatus which concerns on other embodiment of this invention. The perspective view which shows the heat radiating member of the optical apparatus which concerns on other embodiment of this invention. Explanatory drawing of the heat radiating member in FIG. Explanatory drawing of the heat conductive member of the optical apparatus which concerns on other embodiment of this invention. The flowchart shown in order to demonstrate the attachment method of the liquid crystal display device which concerns on other embodiment of this invention. Schematic which shows the one aspect | mode of the angle adjustment jig which performs angle adjustment of the incident side polarizing plate. Sectional drawing which shows the conventional optical apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Projector, 400R R liquid crystal display device, 400r R liquid crystal panel, 400G G liquid crystal display device, 400g G liquid crystal panel, 400BB liquid crystal display device, 400b B liquid crystal panel, 500 cross dichroic prism, 510R R light reflection dichroic surface, 510B B-reflecting dichroic surface 600 projection optical system, 700 an optical device, 800 an angle adjustment jig 902 panel holding frame, 902A, 902B protruding portion group, 902a ₁ ~902a ₄ pin insertion Hole, 918R R incident side polarizing plate, 918G G incident side polarizing plate, 918B B incident side polarizing plate, 936 heat radiation member, 936A bonding side surface portion, 936B ceiling portion, 936a convex portion, 936D incident side Polarizing plate mounting part, 936d bonding part, 937 dowel, 938 heat insulation pin, 939 hole part , 940A conductive member, 940A frame, 940A ₁ step surface, 940B ₁ , 940B ₂ legs, 950 prism fixing plate, 950A ₁ step surface, 950B ₁ screw hole, 950B ₂ convex for positioning

Claims (9)

A color synthesizing optical system mounted on a heat conductive member constituting an optical component housing and having a plurality of light incident surfaces;
An optical device provided with a plurality of liquid crystal display devices each having a liquid crystal panel and a panel holding frame attached to each light incident surface of the color synthesis optical system via a coupling pin,
A plurality of heat dissipating members that are bonded onto the heat conductive member and that store and hold the plurality of liquid crystal display devices respectively;
Each of these heat dissipating members is formed by a U-shaped block body having two adhering side surfaces facing each other and a ceiling portion connecting both adhering side surfaces.     2. The optical device according to claim 1, wherein the heat radiating member is bonded to the liquid crystal display device and the heat conductive member with a heat conductive adhesive. In the optical device according to claim 1 or 2, two sets of convex portions arranged in parallel in the holding frame thickness direction are provided on each side surface of the panel holding frame,
An optical apparatus, wherein a convex portion that fits into the two sets of convex portions is provided on each side surface portion for bonding of the heat dissipation member.     4. The optical device according to claim 1, wherein the heat conductive member is formed by a block body that also serves as a fixing block of the color synthesis optical system. A color synthesizing optical system mounted on a heat conductive member constituting an optical component housing and having a plurality of light incident surfaces;
A plurality of liquid crystal display devices each having a liquid crystal panel and a panel holding frame attached to each light incident surface of the color synthesis optical system via a connecting pin;
An optical device comprising an incident-side polarizing plate disposed on the incident side of the liquid crystal display device,
A plurality of heat dissipating members that are bonded onto the heat conductive member, and that each of the plurality of liquid crystal display devices is bonded and held therein, and the incident side polarizing plate is attached;
Each of these heat dissipating members is formed by a U-shaped block body having two adhering side surfaces facing each other and a ceiling portion connecting both adhering side surfaces. An illumination device for emitting illumination light;
A color separation optical system that separates illumination light emitted from the illumination device into a plurality of color lights, and an optical that modulates each color light separated by the color separation optical system to form an image and synthesize these images Equipment,
In a projector comprising a projection optical system that projects and displays an image synthesized by this optical device on a projection surface,
The projector according to claim 1, wherein the optical device is the optical device according to claim 1. An illumination device for emitting illumination light;
A color separation optical system that separates illumination light emitted from the illumination device into a plurality of color lights, and an optical that modulates each color light separated by the color separation optical system to form an image and synthesize these images Equipment,
In a projector comprising a projection optical system that projects and displays an image synthesized by this optical device on a projection surface,
The projector according to claim 5, wherein the optical device is the optical device according to claim 5. A color synthesizing optical system mounted on a heat conductive member constituting an optical component housing and having a plurality of light incident surfaces;
In order to assemble an optical device including a plurality of liquid crystal display devices each having a liquid crystal panel and a panel holding frame attached to each light incident surface of the color combining optical system via a connecting pin,
The liquid crystal display device is attached to the color synthesizing optical system using a plurality of heat radiating members each having a U-shaped block body having two adhesive side portions facing each other and a ceiling portion connecting the two side surfaces for bonding. A method,
In attaching each of the plurality of liquid crystal display devices to each light incident surface of the color synthesis optical system via the connection pin,
The liquid crystal display device is accommodated and held via an uncured adhesive in the heat dissipation member,
Next, a connecting pin in which an uncured adhesive is previously applied to the adherend is interposed between the color synthesis optical system and the liquid crystal display device, and an uncured adhesive is disposed on the thermally conductive member. Through which the heat dissipating member is placed,
Thereafter, after the focus / alignment adjustment of the liquid crystal panel is executed, the heat radiating member is attached to the liquid crystal display device and the heat conductive member by curing the uncured adhesive. And mounting method of the liquid crystal display device. A color synthesizing optical system mounted on a heat conductive member constituting an optical component housing and having a plurality of light incident surfaces;
A plurality of liquid crystal display devices each having a liquid crystal panel and a panel holding frame attached to each light incident surface of the color synthesizing optical system, and an incident-side polarizing plate disposed on the incident side of the liquid crystal display device To assemble an optical device with
A plurality of heat radiating members composed of U-shaped block bodies having two adhering side surfaces facing each other and a ceiling portion connecting both adhering side surfaces are used, and the liquid crystal display device and the An optical device manufacturing method for attaching an incident side polarizing plate,
Interposing a connecting pin with an uncured adhesive applied to the adherend between the color synthesis optical system and the liquid crystal display device;
After executing the focus / alignment adjustment of the liquid crystal panel,
Fix the liquid crystal display device to a color synthesis optical system by curing the uncured adhesive,
For the heat radiating member, install and fix the incident side polarizing plate via an adhesive,
The liquid crystal display device is housed and held in a heat dissipation member via an uncured adhesive, and the heat dissipation member is placed on the thermally conductive member via an uncured adhesive,
After performing the angle adjustment of the incident side polarizing plate,
A method of manufacturing an optical device, wherein the heat radiating member is attached to a liquid crystal display device and the heat conductive member by curing the uncured adhesive.

Images