WO2017126405A1 - Case for optical components and projector - Google Patents

Abstract

To provide: a case for optical components, which is capable of suppressing entrance of dirt and dust; and a projector. A case (5) for optical components, which houses an optical component, is provided with a first case (6) and a second case (7) that is combined with the first case. The first case has: an opening through which an optical component is inserted; a groove (66) that is positioned at the edge of the opening; and an elastic member (TB) that is elastically deformable and is arranged within the groove. The second case has a surface that closes the opening and is provided with projections (76, 77) which are inserted into the groove so as to press the elastic member.

Description

Optical component casing and projector

The present invention relates to an optical component housing that houses an optical component, and a projector including the optical component housing.

Conventionally, a projector including a light source, a light modulation device that modulates light emitted from the light source to form an image according to image information, and a projection optical device that projects the formed image is known. Yes. As such a projector, an illumination optical system that reduces illuminance unevenness of light emitted from a light source, a spectroscopic unit that separates red light, green light, and blue light from the light, and these optical elements are housed. A projector including an optical device having an optical device housing is known (see, for example, Patent Document 1).

In the projector described in Patent Document 1, the optical element includes various lenses including a lens array, a reflection mirror including a dichroic reflection mirror, and a filter. The optical device housing is detachably attached to an upper portion of the main housing having an opening for inserting the optical element, an optical element housing portion for housing the optical element, and the main housing. A lid that closes a part of the opening, and a sub-lid that closes the opening.
The optical element is accommodated in such an optical device casing, whereby the manufacturability of the optical device is improved.

JP 2004-271700 A

In recent years, the use of projectors has been expanded, and the use place of the projectors is not limited to indoors, but the use of the projectors in a dusty environment has increased. When the projector is used in such an environment, it is assumed that air containing dust is introduced into the projector as a cooling gas. If dust contained in such air enters, for example, the optical device housing and adheres to the optical element, the brightness of the projected image may be reduced, and the projected image may be deteriorated by the dust as a shadow. There is.
Due to such problems, there has been a demand for a projector that is not easily affected by dust.

The present invention aims to solve at least a part of the above-described problems, and an object of the present invention is to provide an optical component casing and a projector capable of suppressing intrusion of dust.

An optical component casing according to a first aspect of the present invention is an optical component casing that houses an optical component, and includes a first casing and a second casing that is combined with the first casing. The first housing includes an opening into which the optical component is inserted, a groove located at the periphery of the opening, and an elastically deformable elastic member disposed in the groove, and the second housing Is combined with the first housing so as to close the opening, and has a protrusion that is inserted into the groove and presses the elastic member.

According to the first aspect, the elastic member that can be elastically deformed is disposed in the groove located at the periphery of the opening in the first housing, and the elastic member is on the surface that closes the opening in the second housing. It is pressed by the protruding ridge part. According to this, when the first casing and the second casing are combined, the protrusion includes a gas containing dust between the groove and the protrusion by pressing and deforming the elastic member. It can suppress that the clearance gap which can distribute | circulate is produced. Therefore, it is possible to prevent the dust from entering the optical component casing through the gap. Then, such an optical component housing is employed in a projector as a housing for housing an optical component disposed on an optical path of a light beam used for image formation, so that a projection image caused by dust adhering thereto is obtained. It is possible to suppress a decrease in brightness and deterioration of the projected image.
In addition, since the elastic member disposed in the groove portion is pressed by the ridge portion and the gas flow between the groove portion and the ridge portion is suppressed, it is bonded between the groove portion and the ridge portion. The removal of the second housing from the first housing can be easily performed compared to the case of filling the agent. Therefore, the reworkability of the optical component casing can be improved.

In the first aspect, the groove portion has a first bottom portion that is substantially along the outer edge of the first housing and on which the elastic member is disposed, the protruding portion is inserted in substantially the entire area of the groove portion, and at least one end of the groove portion is And exposed at the surface of the first housing substantially orthogonal to the extending direction of the groove, at least one end being formed deeper than the first bottom, and the end of the elastic member being accommodated between the second housing. Preferably it has a second bottom.
The groove direction indicates the extending direction of the groove.
Here, when arranging an elastic member along the 1st bottom part of a groove part, it is preferable to arrange | position the elastic member which matched the dimension of the groove direction of the said groove part. However, it is difficult to prepare such an elastic member in advance. In particular, considering that the elastic member is elastically deformed by being pressed by the protrusion, the elastic member after deformation is likely to protrude outward from the end of the groove.
On the other hand, according to the above configuration, when an elastic member longer than the dimension of the groove portion in the groove direction is disposed on the first bottom portion and the first housing and the second housing are combined, at least one end of the groove portion. The end of the elastic member (the excess end) can be stored between the second bottom and the second housing. Therefore, it can suppress that an elastic member protrudes from a groove part.

In the first aspect, the elastic member has a substantially columnar shape, and the groove width in the first bottom portion is set to a dimension in which the elastic members disposed in the first bottom portion substantially abut on inner surfaces facing each other in the groove portion. It is preferable.
Here, when the elastic member is pressed by the protrusion without contacting the first bottom portion, the elastic member may not be sufficiently elastically deformed and the gap may be partially formed. is there.
On the other hand, according to the said structure, the elastic member which contacts the said inner surface and 1st bottom part in a groove part, and is pressed by the protrusion part can fully be deformed. Therefore, it can suppress more reliably that the said clearance gap is formed.

In the first aspect, the elastic member is preferably formed in a hollow shape.
According to such a structure, the elastic member pressed by the protrusion part can be easily elastically deformed. Therefore, it is possible to reliably suppress the occurrence of the gap. Further, since the elastic member is easily deformed, the elastic member can absorb the tolerance of the groove and the protrusion.

In the said 1st aspect, it is preferable that the groove width of a groove part becomes small as it goes to a depth direction.
According to such a configuration, the elastic member and the protrusion can be easily inserted into the groove, and when the elastic member is deformed, the contact area of the elastic member with the inner surface of the groove can be increased. it can. Therefore, the formation of the gap can be reliably suppressed.

According to a second aspect of the present invention, there is provided a projector for projecting the optical component casing, the light source device, a light modulation device that modulates light emitted from the light source device, and light modulated by the light modulation device. The optical device includes: an optical device; and an optical component disposed on an optical path of light incident on the light modulation device from the light source device and housed in an optical component housing.
According to the said 2nd aspect, there can exist an effect similar to the housing | casing for optical components which concerns on the said 1st aspect. And it can suppress that the fall of the brightness | luminance of a projection image and the deterioration of the said projection image arise by this.

In the second aspect, the optical component housing has a light source device connection portion connected to the light source device, and a first sealing member is provided between the light source device connection portion and the light source device. Is preferred.
According to such a configuration, the connection part-light source device sealing member as the first sealing member includes dust in the optical component casing through the space between the light source device connection part and the light source device. Invasion of gas can be suppressed.

In the second aspect, the optical component housing includes a support member that supports the projection optical device, and the support member connection portion is connected to the support member, and the support member connection portion and the support member are disposed between the support member connection portion and the support member. It is preferable that a second sealing member is provided.
According to such a configuration, the sealing member between the connecting portion and the supporting member as the second sealing member includes dust in the optical component casing through the space between the supporting member connecting portion and the supporting member. Invasion of gas can be suppressed.

In the said 2nd aspect, it is connected with the optical component housing | casing so that the optical component housing | casing may be pinched | interposed, and it has a cooling device which has a duct part which distribute | circulates cooling gas, Between an optical component housing | casing and a duct part. Is preferably provided with a third sealing member.
According to such a configuration, the dust between the optical component casing and the duct portion is removed by the casing-duct sealing member as the third sealing member between the optical component casing and the duct portion. It is possible to suppress the intrusion of the contained gas.

1 is a perspective view showing an external appearance of a projector according to an embodiment of the invention. The schematic diagram which shows the structure of the apparatus main body in the said embodiment. The perspective view which shows the housing | casing for optical components in the said embodiment. The perspective view which shows the housing | casing for optical components in the said embodiment. The figure which shows the components storage member in the said embodiment. The figure which shows the components storage member in the said embodiment. The figure which shows the lid-shaped member in the said embodiment. The side view which shows the housing | casing for optical components in the said embodiment. The figure which shows the state which the protrusion part in the said embodiment pressed the tube. The perspective view which shows the housing | casing for optical components and the cooling device in the said embodiment. The perspective view which shows the housing | casing for optical components and the cooling device in the said embodiment. The schematic diagram which shows the structure of the cooling device in the said embodiment. Sectional drawing which shows the light source device connection part and light source device in the said embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[External configuration of projector]
FIG. 1 is a perspective view showing an external appearance of a projector 1 according to the present embodiment.
The projector 1 according to the present embodiment modulates light emitted from a light source device 41, which will be described later, forms an image according to image information, and projects the formed image on a projection surface such as a screen in an enlarged manner. Type image display device. In this projector 1, the optical component housing 5 included in the image projection device 4 described later is combined with the light source device 41, the support member 47 and the cooling device 9 described later, respectively, thereby suppressing the intrusion of dust into the interior. One of the features is that it is configured as a sealed casing.
As shown in FIG. 1, such a projector 1 includes an exterior housing 2 that configures an external appearance and accommodates an apparatus main body 3 (see FIG. 2) described later. The exterior casing 2 is configured in a substantially rectangular parallelepiped shape by combining an upper case 2A, a lower case 2B, a front case 2C, and a rear case 2D, each formed of a synthetic resin. Such an exterior housing 2 has a top surface portion 21, a bottom surface portion 22, a front surface portion 23, a back surface portion 24, a left side surface portion 25, and a right side surface portion 26.

When the projector 1 is placed on the placement surface, the bottom surface portion 22 is provided with leg portions 221 that come into contact with the placement surface in a detachable manner at a plurality of locations.
An opening 231 through which an image projected by the projection optical device 46 passes is formed at the central portion of the front portion 23 so as to expose an end 461 of the projection optical device 46 described later.
Further, an exhaust port 232 through which the heat-carrying cooling gas in the exterior housing 2 is discharged is formed at the position on the left side surface portion 25 side in the front portion 23, and a plurality of louvers 233 are formed in the exhaust port 232. Is provided.
On the other hand, a plurality of indicators 234 indicating the operating state of the projector 1 are provided at a position on the right side surface portion 26 side in the front portion 23.
The right side surface portion 26 is formed with an introduction port 261 for introducing outside air into the inside as a cooling gas, and a cover member 262 provided with a filter (not shown) is attached to the introduction port 261.

In the following description, the direction along the image projection direction by the projection optical device 46 to be described later when viewed from the rear surface portion 24 toward the front surface portion 23 and viewed from the top surface portion 21 side is defined as the + Z direction. Also, the directions orthogonal to the + Z direction and orthogonal to each other are defined as a + X direction and a + Y direction. In the present embodiment, the direction from the left side surface portion 25 toward the right side surface portion 26 is defined as the + X direction, and the direction from the bottom surface portion 22 toward the top surface portion 21 is defined as the + Y direction. Although not shown, for the sake of convenience of explanation, the direction opposite to the + Z direction is defined as the −Z direction. The same applies to the −X direction and the −Y direction.

[Device configuration]
FIG. 2 is a schematic diagram showing the configuration of the apparatus main body 3.
As shown in FIG. 2, the apparatus main body 3 includes an image projection apparatus 4, and includes a cooling device 9 although not shown in FIG. 2. Further, although not shown, the apparatus main body 3 includes a control device that controls the operation of the projector 1 and a power supply device that supplies power to the electronic components that constitute the projector 1. Among these, the control device, for example, outputs an image signal corresponding to image information input from the outside to the image projection device 4 and controls lighting of the plurality of indicators 234.

[Configuration of image projection apparatus]
The image projection device 4 forms an image corresponding to the image signal input from the control device, and projects the image on the projection surface. The image projection device 4 includes a light source device 41, a homogenization device 42, a color separation device 43, a relay device 44, an electro-optical device 45, a projection optical device 46, a support member 47, and an optical component housing 5.

[Configuration of light source device]
The light source device 41 emits illumination light to the homogenizing device 42. As a configuration of such a light source device 41, for example, a light source such as an LD (Laser Diode) that emits blue light that is excitation light and a part of the blue light emitted from the light source are diffused. A diffusing element to be converted, a wavelength conversion element that converts another part of blue light into fluorescence, and a light combining device that emits white light that combines the part of blue light and fluorescence toward the equalizing device 42, The structure which has can be illustrated. In addition, as another structure of the light source device 41, the structure which has light source lamps, such as an ultrahigh pressure mercury lamp, as a light source, and the structure which has other solid light sources, such as LED (Light Emitting Diode), can be illustrated.

[Configuration of homogenizer]
The uniformizing device 42 equalizes the illuminance in the plane orthogonal to the central axis of the light beam in the process in which the light beam incident from the light source device 41 passes along the + Z direction. The homogenizer 42 includes a first lens array 421, a second lens array 422, a polarization conversion element 423, and a superimposing lens 424. Note that the homogenizing device 42 may further include a light control device that shields a part of the transmitted light flux and adjusts the amount of transmitted light.
Although not shown in detail, the first lens array 421 has a plurality of first lenses arranged in a matrix in a plane orthogonal to the central axis of the incident light beam, and the plurality of first lenses provide a light source. The light beam incident from the device 41 is divided into a plurality of partial light beams.
The second lens array 422 includes a plurality of second lenses corresponding to the plurality of first lenses, and a plurality of incident partial light beams together with the superimposing lens 424 are formed in an image forming region of a light modulation device 453 described later. Superimpose.
The polarization conversion element 423 converts each partial light beam incident from the second lens array 422 into one type of linearly polarized light. This polarization conversion element 423 is one of objects to be cooled by the cooling device 9 described later.

[Configuration of color separation device and relay device]
The color separation device 43 separates the red light LR, the green light LG, and the blue light LB from the light flux incident from the uniformizing device 42. This color separation device 43 separates a dichroic mirror 431 that reflects red light LR and green light LG and transmits blue light LB, and a dichroic mirror 432 that transmits red light LR and reflects green light LG. And a reflection mirror 433 that reflects the blue light LB toward a blue field lens 451 described later.
The relay device 44 includes an incident side lens 441, a reflection mirror 442, a relay lens 443, and a reflection mirror 444, which are provided on the optical path of the separated red light LR. In the present embodiment, the red light LR is allowed to pass through the relay device 44. However, the present invention is not limited to this. For example, a blue light LB may be allowed to pass.

[Configuration of electro-optical device]
The electro-optical device 45 modulates and synthesizes each incident color light to form an image corresponding to the image signal. The electro-optical device 45 includes three field lenses 451, three incident-side polarizing plates 452, three light modulators 453, and three outgoing-side polarizing plates 454 provided for the three color lights LR, LG, and LB. And a color synthesizing device 455 for synthesizing the modulated color lights LR, LG, LB.
Among these, the light modulation device 453 is configured to include a transmissive liquid crystal panel having a different light incident surface and light emission surface in this embodiment. However, the present invention is not limited to this, and a configuration may be adopted in which a reflective liquid crystal panel having the same light incident surface and light emitting surface is provided.
In the present embodiment, the color synthesizing device 455 is configured by a cross dichroic prism, but may be configured by a plurality of dichroic mirrors.
The components 452 to 455 excluding the field lens 451 are integrated into a prism unit PR, and the prism unit PR is one of objects to be cooled by the cooling device 9 described later. The field lens 451 is disposed in the groove 62 of the component storage member 6 that constitutes the optical component casing 5 described later.

[Configuration of Projection Optical Device and Support Member]
The projection optical device 46 enlarges and projects the light beam (the light beam forming the image) combined by the color combining device 455 onto the projection surface. The projection optical device 46 is configured as a combined lens in which a plurality of lenses are arranged in a lens barrel. Such a projection optical device 46 is arranged such that the lens optical axis is along the + Z direction.
The support member 47 is fixed in the exterior housing 2 and supports the projection optical device 46. The support member 47 includes a rectangular holding portion 471 that surrounds and holds the projection optical device 46, and a prism base PB (see FIG. 12) that supports the prism unit PR is fixed to the holding portion 471. Is done. Thereby, each light modulation device 453 is arranged at the back focus position of the projection optical device 46.

[Configuration of optical component casing]
The optical component casing 5 accommodates the devices 42 to 44 and the field lens 451 therein. An illumination optical axis Ax is set inside the optical component casing 5, and optical components 421 to 424, 431 to 433, 441 to 444, and 451 are arranged at predetermined positions with respect to the illumination optical axis Ax. The
The end of the optical component housing 5 on the side of the light source device 41 (the end on the −Z direction side) is connected to the light source device 41 via a sealing member EM1 as a connecting member-light source device sealing member. The light source device connection unit 51 is configured. The light source device connection portion 51 has a substantially rectangular opening 511 into which light from the light source device 41 is incident. When the light source device 41 is connected to the light source device connecting portion 51, the illumination optical axis Ax coincides with the central axis of the emitted light beam from the light source device 41.
Further, in the optical component housing 5, the end portion on the light emission side (the end portion on the + Z direction side) is connected to the support member 47 via a sealing member EM 2 as a sealing member between the connection portion and the support member. The supporting member connecting portion 52 is configured.
The sealing members EM1 and EM2 are members made of a material that has elasticity and does not have air permeability, and examples thereof include urethane foam. The same applies to sealing members EM3 to EM6 described later.

Furthermore, the optical component housing 5 includes a unit arrangement portion 53 that is formed in a concave shape from the connection portion of the support member connection portion 52 with the support member 47. In the unit arrangement portion 53, the prism unit PR is arranged at a position on an extension line of the illumination optical axis Ax.
The unit placement portion 53 is blocked from the light emission side by the support member 47 when the support member 47 is connected to the support member connection portion 52. Thereby, a part of flow path of the cooling gas which distribute | circulates by the cooling device 9 mentioned later is formed. In other words, the support member 47 constitutes a part of a duct that forms the flow path of the cooling gas.

3 and 4 are perspective views showing the optical component casing 5. FIG. More specifically, FIG. 3 is a perspective view showing the optical component housing 5 viewed from the −Z direction side, and FIG. 4 is a perspective view showing the optical component housing 5 viewed from the + Z direction side. . 3 and 4, the illustration of the substrate CR attached to the lid-like member 7 is omitted.
As shown in FIGS. 3 and 4, the optical component casing 5 includes a component storage member 6 (first casing) positioned on the −Y direction side and a lid-shaped member 7 positioned on the + Y direction side. (Second housing), and these are combined. The component storage member 6 and the lid-like member 7 are made of synthetic resin in the present embodiment, but may be made of other materials (for example, metal such as aluminum).

[Configuration of parts storage member]
FIG. 5 is a plan view showing the component storage member 6. Specifically, FIG. 5 is a plan view of the component storage member 6 viewed from the + Y direction side.
The component storage member 6 is a box-shaped housing having a substantially U-shaped cross section that is placed and fixed on a first duct portion 91 of a cooling device 9 to be described later. As shown in FIG. 5, the component storage member 6 has an opening 61 for arranging the optical components 421 to 424, 431 to 433, 441 to 444, and 451 therein. It is closed by the lid-like member 7.
The component storage member 6 includes a plurality of grooves 62 in which some of the optical components 421 to 424, 431 to 433, 441 to 444, and 451 are inserted and other optical components. A plurality of locking portions 63 to be locked are included inside. The plurality of groove portions 62 and the plurality of locking portions 63 constitute an optical component housing portion that houses an optical component.
Furthermore, the component storage member 6 has a concave portion 64 that forms the unit arrangement portion 53 together with the lid-like member 7 at a portion on the light emission side. In the concave portion 64, openings 641 through which the respective color lights LB, LG, and LR transmitted through the field lens 451 pass are formed at positions where the field lens 451 is disposed.

In the outer edge portion of the component storage member 6 that is the peripheral edge of the opening 61, the end portion on the light source device 41 side excluding the edge along the X direction and the edge of the recess 64 is on the lid-like member 7 side ( Grooves 65 and 66 are formed in the (+ Y direction side).
The groove 65 is formed along the optical path of the blue light LB from the end on the light source device 41 side to the end on the support member 47 side.
The groove 66 is formed along the optical path of the red light LR from the end on the light source device 41 side to the end on the support member 47 side.
Inside these groove portions 65 and 66, hollow cylindrical (tubular) tubes TB are respectively arranged. And although mentioned later in detail, each tube TB is pressed and deform | transformed by the protrusions 76 and 77 which the lid-shaped member 7 mentions later.

FIG. 6 is a diagram showing the component storage member 6 as viewed from the −Y direction side.
The component storage member 6 has a substantially U-shaped standing portion 67 that stands up from the surface 6A at a position surrounding the concave portion 64 from the + X direction side, the −Z direction side, and the −X direction side on the surface 6A on the −Y direction side. Have A first duct portion 91 (see FIGS. 10 to 12) constituting a cooling device 9 described later is connected to the distal end surface of the standing portion 67 via a sealing member EM3.
Further, the component housing member 6 has an opening 68 and a standing part 69 that rises from the surface 6 </ b> A at the periphery of the opening 68 at a position corresponding to the polarization conversion element 423. Similarly, the first duct portion 91 is connected to the front end surface of the standing portion 69 via the sealing member EM4.
As will be described in detail later, the cooling gas flowing through the first duct portion 91 is introduced into the unit arrangement portion 53 to cool the prism unit PR, and through the opening 68, the optical component casing. 5 to cool the polarization conversion element 423.
The sealing members EM3 and EM4 constitute the casing-duct portion sealing member.

[Configuration of lid-like member]
FIG. 7 is a diagram showing the lid-like member 7 viewed from the + Y direction side.
As shown in FIG. 7, the lid-like member 7 is formed in a shape corresponding to the outer shape of the component housing member 6 when viewed from the + Y direction side, and closes the opening 61. As shown in FIGS. 3, 4, and 7, the lid-like member 7 has an opening 71, a standing part 72, and openings 73 and 74.

The opening 71 is formed at a position corresponding to the polarization conversion element 423. The opening 71 is introduced through the opening 68 of the component housing member 6, and the cooling gas that has cooled the polarization conversion element 423 is supplied to the outside of the optical component housing 5 (in a second duct portion 92 described later). Discharge.
The standing part 72 stands up from the surface 7A on the + Y direction side in the lid-like member 7 so as to surround the opening 71. The leading end surface of the upright portion 72 is connected to the second duct portion 92 constituting the cooling device 9 via the sealing member EM6.
The opening 73 is formed in a substantially L shape at a position corresponding to the dichroic mirror 431, and the opening 74 is formed at a position corresponding to the relay lens 443. A jig for adjusting the position of the optical component (for example, the dichroic mirror 431 and the relay lens 443) is inserted into the openings 73 and 74. And these opening parts 73 and 74 are obstruct | occluded by the obstruction member which is not shown in figure after position adjustment of an optical component.

As shown in FIG. 7, three substrates CR (CRB, CRG, and CRR) are disposed in the vicinity of the edge of the recess 75 constituting the unit arrangement portion 53 on the surface 7A.
These substrates CR are connected to a flexible printed circuit board (not shown) extending from the corresponding light modulation device 453 in the prism unit PR (see FIG. 2) arranged in the unit arrangement portion 53.

Specifically, the substrate CRB is disposed at a position corresponding to the blue light LB field lens 451 and the reflection mirror 433, and is connected to the light modulation device 453G. The substrate CRG is disposed at a position corresponding to the field lens 451 for the green light LG and the dichroic mirror 432, and is connected to the light modulation device 453G. The substrate CRR is disposed at a position corresponding to the field lens 451 for red light LR and the reflection mirror 444, and is connected to the light modulation device 453R.
Furthermore, a substantially U-shaped sealing member EM5 corresponding to the edge shape is disposed at the edge portion of the recess 75 so as to cover a part of the substrate CR from the + Y direction side. Through the sealing member EM5, the edge portion of the concave portion 75 is connected to the second duct portion 92 constituting the cooling device 9.
In addition, on the surface 7A, the arrangement positions of the substrates CR are formed flat, and the surfaces of the substrates CR facing the lid-like member 7 are formed flat. For this reason, each board | substrate CR is attached to the surface 7A in the state without a clearance gap.

[Configuration of ridge portion inserted into groove portion]
FIG. 8 is a side view showing the optical component casing 5 in which the component storage member 6 and the lid-like member 7 are combined. Specifically, the light source device connection portion 51 in the optical component casing 5 is − It is the side view seen from the Z direction side. Moreover, FIG. 9 is a figure which shows the state which the protrusion part 77 inserted in the groove part 66 pressed the said tube TB.
As shown in FIG. 8, the lid-like member 7 has protrusions 76 and 77 that protrude from the surface 7B on the −Y direction side and are inserted in substantially the entire region in the width direction of the groove portions 65 and 66.
Among these, as shown in FIG. 9, the protruding portion 77 presses and deforms the tube TB disposed in the groove portion 66, and thereby, between the inner surface of the groove portion 66 and the protruding portion 77. The formation of a gap through which dust enters is suppressed. Since the tube TB is a hollow tube as described above, the tube TB is easily deformed by pressing by the protrusion 77. Furthermore, in the present embodiment, the tube TB is configured by a silicon tube having a relatively high heat resistance in consideration of the influence of heat.

In addition, the groove part 66 is formed in the taper shape where a groove width becomes small as it goes to the depth direction, and in this embodiment, it inclines at an inclination angle of about 3 degrees with respect to the + Y direction. In addition, the groove width of the first bottom portion 661 in which the tube TB is disposed in the groove portion 66 is such that when the tube TB is disposed in the first bottom portion 661, both inner surfaces of the groove portion 66 (facing each other and being the first bottom portion). It is set so that the outer surface of the tube TB is in contact with the inner surface) connected by 661. The depth of the groove 66 is set to 1.5 to 2 times the diameter of the tube TB.

Here, the dimension in the axial direction of the tube TB is set longer than the dimension in the groove direction of the groove portion 66. For this reason, the end of the tube TB is left at the end of the groove 66 in the groove direction.
On the other hand, one end of the groove portion 66 in the groove direction is exposed at the surface of the light source device connection portion 53 orthogonal to the groove direction, and the other end is orthogonal to the groove direction among the edges of the recess 75. Exposed at the site. At these ends, a second bottom 662 deeper than the first bottom 651 is formed. For this reason, when the lid-like member 7 is combined with the component storage member 6, a relatively large gap can be formed between the surface 7 </ b> B and the second bottom portion 662. By accommodating the end portion of the tube TB in this gap, it is possible to suppress the end portion of the tube TB from protruding out of the groove portion 65.
In addition, the structure and shape of the groove part 65 and the protrusion part 76 are the same as that of the groove part 66 and the protrusion part 77, and the tube TB is arrange | positioned at the both ends of the groove direction of the said groove part 65 as shown in FIG. A second bottom portion 652 deeper than the first bottom portion 651 is formed.

[Configuration of cooling device]
10 and 11 are perspective views showing the cooling device 9 combined with the optical component casing 5. More specifically, FIG. 10 is a perspective view showing the cooling device 9 viewed from the −Z direction side, and FIG. 11 is a perspective view showing the cooling device 9 viewed from the + Z direction side. FIG. 12 is a schematic diagram showing the configuration of the cooling device 9.
The cooling device 9 is combined with the optical component casing 5 and the support member 47, and blows cooling gas to the optical components constituting the image projection device 4 to cool the optical components. Specifically, the cooling device 9 constitutes a closed circulation channel of cooling gas for cooling the polarization conversion element 423 and the prism unit PR as optical components, respectively.
As shown in FIGS. 10 and 11, such a cooling device 9 is combined with the optical component casing 5 and the support member 47 to form a first duct portion 91 and a second duct portion 92 that form a sealed space therein. In addition to the connection duct portion 93, as shown in FIG. 12, a circulation device 94, a heat receiving device 95, a delivery device 96, a heat conducting member 97, and a heat radiating device 98 are provided respectively in the sealed space S.

[Configuration of first duct section]
As shown in FIGS. 10 to 12, the first duct portion 91 and the second duct portion 92 are arranged so as to sandwich the optical component housing 5 from the −Y direction side and the + Y direction side.
Among these, the first duct portion 91 is disposed on the −Y direction side with respect to the optical component casing 5 (component storage member 6). As shown in FIG. 12, the first duct portion 91 has three openings 911 to 913 and edge portions 914 to 916 that form the end edges of the openings 911 to 913. The gas can be circulated.
An edge portion 914 that forms an end edge of the opening 911 is connected to the connection duct portion 93.
An edge portion 915 that forms an edge of the opening 912 is connected to the standing portion 67 of the component storage member 6 through the sealing member EM3.
An edge portion 916 that forms an end edge of the opening 913 is connected to the standing portion 69 through the sealing member EM4.
In this way, the first duct portion 91 and the component storage member 6 are brought into close contact with each other via the sealing members EM3 and EM4, and the first duct portion 91 and the component storage member 6 are connected to each other through the joint portion. Intrusion of dust and the like from the outside of the component housing 5 and the cooling device 9 is suppressed.

[Configuration of second duct part]
As shown in FIGS. 10 to 12, the second duct portion 92 is disposed on the + Y direction side with respect to the optical component housing 5 (the lid-like member 7). As shown in FIG. 12, the second duct portion 92 has three openings 921 to 923 and edge portions 924 to 926 forming the end edges of the openings 921 to 923, and the inside is cooled. The gas can be circulated.
An edge portion 924 that forms an end edge of the opening 921 is connected to the connection duct portion 93.
An edge 925 that forms the edge of the opening 922 protrudes toward the lid-like member 7 and is connected to the edge of the recess 75 via the sealing member EM5.
An edge 926 that forms an edge of the opening 923 is connected to the standing part 72 of the lid-like member 7 via the sealing member EM6.
In this way, the second duct portion 92 and the lid-like member 7 are brought into close contact with each other via the sealing members EM5 and EM6, and the optical connection is made via the joint portion between the second duct portion 92 and the lid-like member 7. Intrusion of dust and the like from the outside of the component housing 5 and the cooling device 9 is suppressed.
The sealing members EM5 and EM6 constitute a casing-duct portion sealing member.

[Configuration of connecting duct]
The connection duct portion 93 is located on the + X direction side with respect to the optical component housing 5 and is connected to the first duct portion 91 and the second duct portion 92 to form a substantially sealed space S. Such a connection duct portion 93 is formed in a cylindrical shape extending along the + Y direction, and the edge portion 914 is connected to one end and the edge portion 924 is connected to the other end.

[Configuration of circulation device and heat receiving device]
The circulation device 94 is a circulation fan that circulates the cooling gas in the sealed space S. In this embodiment, the circulation device 94 is disposed in the first duct portion 91, and is a sirocco fan disposed with the intake surface 941 facing the connection duct portion 93 and the discharge surface 942 facing the center of the first duct portion 91. It is comprised by. Note that the circulation device 94 is not limited to this, and may be disposed, for example, in the second duct portion 92 or the connection duct portion 93 or may be configured by an axial fan.
The heat receiving device 95 has a configuration in which a plurality of metal fins having thermal conductivity are integrated, and is disposed in the connection duct portion 93 so that the cooling gas can flow between the fins. The heat receiving device 95 receives heat from the cooling gas flowing through the connection duct portion 93 by driving the circulation device 94 and cools the cooling gas sucked by the circulation device 94. In addition, the heat receiving device 95 may be arrange | positioned in the 1st duct part 91 or the 2nd duct part 92, and may have another structure.

[Configuration of sending device]
The delivery device 96 includes three fans 96 </ b> B, 96 </ b> G, and 96 </ b> R disposed inside the edge portion 915 and one fan 96 </ b> P disposed inside the edge portion 916.
Among these, the fans 96B, 96G, and 96R respectively suck the cooling gas circulated by the circulation device 94 and send it to the vicinity of the light modulation devices 453B, 453G, and 453R. The cooling gas that circulates in this way circulates in the unit arrangement portion 53 from the first duct portion 91 side toward the second duct portion 92 side, and the corresponding light modulation device 453, the incident side polarizing plate 452, and the emission side. The polarizing plate 454 is cooled. Then, the cooling gas that has cooled the light modulation device 453 and the like flows into the edge 925 of the second duct portion 92.
The fan 96P sucks the cooling gas circulated by the circulation device 94 and sends it out to the vicinity of the polarization conversion element 423. The cooling gas flows from the first duct portion 91 side toward the second duct portion 92 side along the light incident side surface and the light emission side surface of the polarization conversion element 423, and the polarization conversion is performed. The element 423 is cooled. Then, the cooling gas that has cooled the polarization conversion element 423 flows into the edge portion 926 of the second duct portion 92.

[Configuration of heat conduction member and heat dissipation device]
The heat conducting member 97 conducts the heat conducted from the cooling gas to the heat receiving device 95 to the heat sink 981 constituting the heat radiating device 98. In the present embodiment, the heat conducting member 97 is configured by a heat pipe, but may be configured by a Peltier element.
The heat dissipation device 98 is located outside the first duct portion 91, the second duct portion 92, and the connection duct portion 93. The heat dissipation device 98 includes the heat sink 981 and a fan 982 that cools the heat sink 981 by circulating the cooling gas introduced into the exterior housing 2.

[Cooling gas flow path]
As described above, the first duct portion 91, the second duct portion 92, and the connection duct portion 93 that constitute the cooling device 9 are combined with the optical component casing 5 and the support member 47, so that a sealed space S is formed inside. Form.
The cooling gas in the sealed space S is received and cooled by the heat receiving device 95 and then sent to the sending device 96 side by the circulation device 94. Among these cooling gases, a part of the cooling gas is sent to the vicinity of the corresponding light modulation device 453 (453B, 453G, 453R) by the fans 96B, 96G, 96R to cool the light modulation device 453 and the like. It flows into the second duct portion 92 through the edge portion 925. On the other hand, another part of the cooling gas is sent to the polarization conversion element 423 by the fan 96P, cools the polarization conversion element 423, and flows into the second duct part 92 through the edge 926.
The cooling gas that has flowed into the second duct portion 92 is sucked by the circulation device 94. This cooling gas is cooled by the heat receiving device 95 in the process of flowing through the connection duct portion 93 and is sent out again to the sending device 96 side by the circulation device 94.
In this way, the cooling gas in the sealed space S circulates in the sealed space S to cool the light modulation device 453 and the polarization conversion element 423.

[Connection between optical component casing and light source device]
As shown in FIG. 2, a pair of projecting portions 411 and 412 projecting from the light emitting surface 41 </ b> A of the light source device 41 so as to sandwich the light source device connecting portion 51 are disposed at the light emitting side end of the light source device 41. Accordingly, the end portion is formed in a substantially U shape.
The light emitting surface 41A is connected to the surface 51A on the −Z direction side of the light source device connection portion 51 of the optical component housing 5.

FIG. 13 is an enlarged cross-sectional view illustrating a connection state between the light source device connection unit 51 and the light source device 41. That is, FIG. 13 is a cross-sectional view along the XY plane of the light source device connection portion 51 and the light source device 41 connected via the sealing member EM1.
As shown in FIG. 13, the protrusions 411 and 412 and the surfaces 51B and 51C facing the protrusions 411 and 412 in the light source device connection portion 51 are light source device connection portions from the −X direction side and the + X direction side. They are connected via the sealing member EM1 sandwiching 51.
Further, the sealing member EM1 also sandwiches the light source device connection part 51 from the −Y direction side and the + Y direction side, and the surface 51D on the −Y direction side of the light source device connection part 51 passes through the sealing member EM1. Are connected to the first duct portion 91. Further, the surface 51E on the + Y direction side is connected to a cover member CM different from the second duct portion 92 via the sealing member EM1. That is, the sealing member EM1 surrounds the light source device connection portion 51 on the −X direction side, the + X direction side, the −Y direction side, and the + Y direction side. In addition, the said surface 51E may be connected with the 2nd duct part 92 through sealing member EM1.
Through such a sealing member EM1, the four surfaces 51B to 51E of the light source device connection portion 51 are other members (that is, the protruding portions 411 and 412 of the light source device 41, the first duct portion 91, and the cover member CM). Is connected to the light source device connection portion 51. Thereby, it is suppressed that the gas containing dust etc. penetrate | invades in the optical component housing | casing 5 through between the light source device connection part 51 and the said other member.

[Connection between optical component casing and support member]
As described above, the optical component housing 5 and the support member 47 are connected to each other via the sealing member EM2 at the support member connecting portion 52.
As shown in FIG. 11, the sealing member EM2 is formed in a rectangular shape surrounding the unit arrangement portion 53, and a part of the sealing member EM2 includes the first duct portion 91 and the second duct, respectively. Connected to the unit 92. That is, the sealing member EM2 is formed in a rectangular frame shape according to the contact portion with the support member 47 that closes the space including the unit arrangement portion 53 in the optical component housing 5 and the cooling device 9 that are combined. Has been placed.
As shown in FIG. 1, the connection part and the support member 47 are connected via the sealing member EM <b> 2, so that the optical component housing 5, the cooling device 9, and the support member 47 are connected. It is sealed and the gas containing dust and the like is prevented from entering the optical component housing 5 and the cooling device 9 through the space between them.

The projector 1 according to the present embodiment described above has the following effects.
In the optical component housing 5, an elastically deformable elasticity is provided in the groove portions 65 and 66 located at the periphery of the opening 61 (a position surrounding at least a part of the opening 61) in the component housing member 6 as the first housing. Each of the tubes TB as a member is disposed, and the tube TB is pressed by the protruding portions 76 and 77 located on the surface 7B closing the opening 61 in the lid-like member 7 as the second housing. According to this, when the component storage member 6 and the lid-like member 7 are combined, the protrusions 76 and 77 press and deform the tube TB, whereby the grooves 65 and 66 and the protrusions 76 and 77 are formed. It is possible to suppress the generation of a gap through which a gas containing dust or the like flows. Therefore, it is possible to suppress dust from entering the optical component casing 5 through the gap.
Such an optical component housing 5 is a projector as a housing for housing the optical components 421 to 424, 431 to 433, 441 to 444, and 451 disposed on the optical path of a light beam used for image formation. By being used in 1, it is possible to suppress a decrease in luminance of the projected image and a deterioration of the projected image.
Further, the tube TB arranged in the groove portions 65 and 66 is pressed by the ridge portions 76 and 77 to suppress the gas flow between the groove portions 65 and 66 and the ridge portions 76 and 77. Therefore, it is possible to easily remove the lid-like member 7 from the component housing member 6 as compared with the case where the adhesive is filled between the groove portions 65 and 66 and the protrusions 76 and 77. Therefore, the reworkability of the optical component casing 5 can be improved.

The groove portions 65 and 66 are formed on the outer edge of the component housing member 6 along the optical paths of the blue light LB and the red light LR, and the tube portions TB are disposed in the groove portions 65 and 66 in the entire groove direction. A bottom 651 is formed. On the other hand, the protrusions 76 and 77 inserted into the groove portions 65 and 66 are inserted in substantially the entire region of the corresponding groove portions 65 and 66 in the groove direction. Both ends of the groove portions 65 and 66 in the groove direction are exposed at the surface 51A of the light source device connection portion 51 and the end surface of the unit arrangement portion 53, which are surfaces orthogonal to the groove direction of the groove portions 65 and 66. Both ends of the groove portions 65 and 66 in the groove direction have second bottom portions 652 and 662 formed deeper than the first bottom portions 651 and 661.
According to this, when the component storage member 6 and the lid-like member 7 are combined, the remaining end portion of the tube TB can be accommodated between the second bottom portions 652 and 662 and the surface 7B of the lid-like member 7. . Therefore, it can suppress that the edge part of tube TB protrudes from the groove parts 65 and 66. FIG.

The tube TB is formed in a substantially cylindrical shape. Moreover, the groove width in the 1st bottom parts 651 and 661 by which the tube TB is arrange | positioned is set to the dimension which the tube TB arrange | positioned in the 1st bottom parts 651 and 661 contacts the mutually opposing inner surface in the groove parts 65 and 66. .
According to this, since the tube TB is surrounded by the inner surfaces of the groove portions 65 and 66 and the first bottom portions 651 and 661 and the ridge portions 76 and 77, the tube TB is sufficiently formed by the pressing by the ridge portions 76 and 77. It can be deformed, and the gap between the ridges 76 and 77 and the inner surfaces of the grooves 65 and 66 can be filled. Therefore, the circulation of the gas containing dust and the like can be more reliably suppressed.

Since the tube TB is formed in a hollow shape, the tube TB can be easily elastically deformed when pressed by the protrusions 76 and 77. Accordingly, the tube TB can be easily brought into contact with the inner surfaces of the protrusions 76 and 77 and the grooves 65 and 66, and dust or the like is caused between the protrusions 76 and 77 and the inner surfaces of the grooves 65 and 66. It can suppress reliably that the clearance gap through which the gas to contain distribute | circulates arises. Further, since the tube TB is easily deformed, the tolerance of the groove portions 65 and 66 and the protruding portions 76 and 77 can be absorbed by the tube TB.

The groove widths of the groove parts 65 and 66 become smaller toward the depth direction of the groove parts 65 and 66. According to this, in addition to making it easy to insert the tube TB and the ridges 76 and 77 into the groove portions 65 and 66, when the tube TB is deformed, the contact between the inner surface of the groove portions 65 and 66 and the tube TB is achieved. The area can be increased. Therefore, it is possible to reliably suppress the generation of a gap through which a gas containing dust or the like flows.

A sealing member EM1 is provided between the light source device connecting portion 51 and the light source device 41 (specifically, the protruding portions 411 and 412). According to this, it is possible to suppress the gas including dust and the like from flowing into the optical component casing 5 through the space between the light source device connection portion 51 and the light source device 41.

The projector 1 includes a support member 47 that is disposed in the exterior housing 2 and supports the projection optical device 46. A sealing member EM <b> 2 is provided between the support member connecting portion 52 and the support member 47. According to this, it is possible to suppress the gas including dust and the like from entering the optical component casing 5 through the space between the support member connecting portion 52 and the support member 47.

The projector 1 includes a cooling device 9 having a first duct portion 91 and a second duct portion 92 that sandwich the optical component casing 5 from the −Y direction side and the + Y direction side. Sealing members EM3 and EM4 are provided between the component housing member 6 constituting the optical component housing 5 and the first duct portion 91, and between the lid-like member 7 and the second duct portion 92. Are provided with sealing members EM5 and EM6. According to this, it is possible to suppress gas including dust and the like from entering the optical component casing 5 between the optical component casing 5 and the first duct portion 91 and the second duct portion 92. .
Further, the field lens 451 exposed to the unit arrangement portion 53 is thus connected by connecting the optical component casing 5 to the first duct portion 91 and the second duct portion 92 through the sealing members EM3 to EM6. There is no need to seal the surroundings with an adhesive or the like. Thereby, fixation of the optical component to the housing 5 for optical components and the assembly of the image projection apparatus 4 can be easily performed.

[Modification of Embodiment]
The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
The component housing member 6 as the first housing constituting the optical component housing 5 has two grooves 65 and 66 positioned at the periphery of the opening 61 for inserting the optical component into the component housing member 6. It was supposed to have. Similarly, the lid-like member 7 serving as the second housing constituting the optical component housing 5 is inserted into the groove portions 65 and 66 and presses and deforms the tube TB serving as the elastic member. 76,77. However, the present invention is not limited to this. For example, the component storage member 6 may have a single groove that surrounds the opening 61, and the lid member 7 may have a single protrusion that is inserted into the groove and presses the tube TB. Further, the number of the groove portions may be three or more as long as it is in a position surrounding the opening 61, and the number of the protrusions only needs to correspond to the number of the groove portions.

In the grooves 65 and 66, the tube TB pressed by the protrusions 76 and 77 is arranged as an elastic member. However, the present invention is not limited to this. For example, instead of the tube TB, similarly to the sealing members EM1 to EM6, a cushion having elasticity but not air permeability may be employed. That is, the material and the configuration of the elastic member are not limited as long as the gap between the groove portions 65 and 66 and the ridge portions 76 and 77 can be sealed and the flow of gas including dust and the like can be suppressed.
In addition, although the tube TB is formed in a hollow shape, a solid tube may be employed. Furthermore, the tube TB may not be formed in a columnar shape, and may have another shape as long as the gap between the groove portion and the protrusion portion can be sealed.
Further, an elastic member such as a cushion is disposed between the edge 61 surrounding the opening 61 and the lid member 7, and the elastic member is sandwiched between the surface of the component storage member 6 and the surface of the lid member 7. It is good.

Second ends that are formed deeper than the first bottom portions 651 and 661 in which the tube TB is disposed at the end portions of the groove portions 65 and 66 and accommodate the end portion of the tube TB between the surfaces 7B of the lid-like member 7. The bottom portions 652 and 662 are formed. However, the present invention is not limited to this. That is, there is no need for such a second bottom. Further, the second bottom portion may not be formed at both ends of the groove portion, and may be formed only at one end side.

Although the groove widths of the groove portions 65 and 66 in which the tube TB as the elastic member is disposed are exemplified in the above embodiment, the present invention is not limited to this. That is, if the elastic member pressed by the protrusions 76 and 77 can be deformed, and the gas flow is suppressed between the protrusions 76 and 77 and the grooves 65 and 66 by the elastic member. The dimensions (groove width and depth) of the groove portions 65 and 66 can be changed as appropriate. Further, the groove portions 65 and 66 do not necessarily have to be tapered, and the inclination angle can be appropriately changed even when the grooves 65 and 66 are formed in a tapered shape.

In the optical component casing 5, a sealing member EM1 serving as a sealing member between the connection portion and the light source device is provided between the light source device connection portion 51 and the light source device 41. Further, the sealing member EM2 as the connecting portion-supporting member sealing member is provided between the supporting member connecting portion 52 and the supporting member 47. Further, between the first duct portion 91 of the cooling device 9 and the optical component casing 5 (component storage member 6), sealing members EM3 and EM4 are provided as casing-duct portion sealing members. In addition, the sealing members EM5 and EM6 are provided between the second duct portion 92 and the optical component casing 5 (lid member 7) as casing-duct section sealing members. However, the present invention is not limited to this. For example, if the entry of dust into the optical component housing 5 is suppressed, at least one of the sealing members EM1 to EM6 may be omitted. Further, the configurations, shapes, and materials of the sealing members EM1 to EM6 can be changed as appropriate.

The optical component casing 5 is assumed to have a shape mainly shown in FIGS. However, the present invention is not limited to this, and the optical component housing 5 may be formed in another shape, for example, a substantially L shape or a substantially U shape when viewed from the + Y direction side. Further, the arrangement of the optical components is not limited to the above example, and can be changed as appropriate, and the configuration of the optical components can be changed as appropriate.

The projector 1 includes three light modulation devices 453 (453R, 453G, and 453B) each including a liquid crystal panel. However, the present invention is not limited to this. That is, the present invention can also be applied to a projector using two or less or four or more light modulation devices.
In addition, as long as the light modulation device can modulate an incident light beam and form an image according to image information, a device using a micromirror, for example, a device using a DMD (Digital Micromirror Device) or the like can be used. A light modulation device may be used.

In the above embodiment, an example in which the optical component casing is applied to the projector 1 has been described. However, the present invention is not limited to this. In other words, the optical component casing of the present invention can be applied not only to the optical components constituting the projector but also to other optical components.

DESCRIPTION OF SYMBOLS 1 ... Projector, 41 ... Light source device, 421 ... 1st lens array (optical component), 422 ... 2nd lens array (optical component), 423 ... Polarization conversion element (optical component), 424 ... Superimposing lens (optical component), 431, 432 ... Dichroic mirror (optical component), 433 ... reflective mirror (optical component), 441 ... incident side lens (optical component), 442, 444 ... reflective mirror (optical component), 443 ... relay lens (optical component), 451 ... Field lens (optical component), 453 (453B, 453G, 453R) ... Light modulation device, 46 ... Projection optical device, 47 ... Support member, 5 ... Optical component casing, 51 ... Light source device connection portion, 511 ... Opening portion, 51A ... surface, 52 ... support member connecting portion, 6 ... component storage member (first housing), 61 ... opening portion, 65, 66 ... groove portion, 651, 661 ... 1 bottom part, 652, 662 ... 2nd bottom part, 7 ... lid-like member (2nd housing | casing), 7A ... surface, 7B ... surface, 76, 77 ... ridge part, 9 ... cooling device, 91 ... 1st duct part (Duct part), 92 ... second duct part (duct part), EM1 ... sealing member (sealing member between connection part and light source device), EM2 ... sealing member (sealing member between connection part and support member), EM3 to EM6: sealing member (sealing member between casing and duct), TB: tube (elastic member).

Claims (9)

1. An optical component housing that houses an optical component,
   A first housing;
   A second housing combined with the first housing,
   The first housing is
   An opening into which the optical component is inserted;
   A groove located at the periphery of the opening;
   An elastically deformable elastic member disposed in the groove,
   The second casing is combined with the first casing so as to close the opening, and has a protrusion that is inserted into the groove and presses the elastic member. Enclosure.
2. The optical component casing according to claim 1,
   The groove part has a first bottom part substantially along the outer edge of the first housing, on which the elastic member is disposed,
   The protruding portion is inserted in substantially the entire area of the groove portion,
   At least one end of the groove is exposed on the surface of the first housing substantially orthogonal to the extending direction of the groove,
   The optical component housing, wherein the at least one end is formed deeper than the first bottom portion, and has a second bottom portion in which the end portion of the elastic member is accommodated between the second housing.
3. The optical component housing according to claim 2,
   The elastic member has a substantially cylindrical shape,
   The groove for the optical component according to claim 1, wherein the groove width in the first bottom portion is set to a size such that the elastic member disposed in the first bottom portion substantially contacts the inner surfaces facing each other in the groove portion.
4. In the optical component housing according to any one of claims 1 to 3,
   The housing for optical parts, wherein the elastic member is formed in a hollow shape.
5. In the optical component housing according to any one of claims 1 to 4,
   A groove for an optical component, wherein the groove width of the groove portion decreases in the depth direction.
6. The optical component housing according to any one of claims 1 to 5,
   A light source device;
   A light modulation device that modulates light emitted from the light source device;
   A projection optical device for projecting light modulated by the light modulation device;
   An optical component disposed on an optical path of light incident on the light modulation device from the light source device and housed in the optical component housing.
7. The projector according to claim 6,
   The optical component housing has a light source device connection portion connected to the light source device,
   A projector in which a first sealing member is provided between the light source device connection portion and the light source device.
8. The projector according to claim 6 or 7,
   A support member for supporting the projection optical device;
   The optical component housing has a support member connecting portion connected to the support member,
   A projector in which a second sealing member is provided between the support member connecting portion and the support member.
9. The projector according to any one of claims 6 to 8,
   A cooling device connected to the optical component casing so as to sandwich the optical component casing and having a duct portion for circulating cooling gas;
   A projector, wherein a third sealing member is provided between the optical component casing and the duct portion.

Images