JP2007256437A - Projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector designed so that an optical engine can be adopted as a common component for two or more types of light source devices that differ in the direction of installation. <P>SOLUTION: The light source device 10 includes a lamp housing 15 having a light source fixing part 154 for supporting a light source lamp and main reflecting mirror and fixing them to an optical component housing 60. The light source device fixing part 154 has a contact face 1,541A that abuts on the optical component housing 60. The light source device support 63 of the optical component housing 60 has: a first positioning face 6,321A that comes into contact with the contact face 1,541A from vertically above and positions the light source device 10 in a prescribed position relative to an illuminating optical axis A; and a second positioning face 6,322B that comes into contact with the contact face 1,541A from vertically below and positions the light source device 10 in the prescribed position relative to the illuminating optical axis A. The first and the second positioning faces 6,321A and 6,322B are rotationally symmetrical around the illuminating optical axis A. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a projector.

2. Description of the Related Art Conventionally, there is known a projector that modulates a light beam emitted from a light source according to image information to form an optical image and project it in an enlarged manner.
Such a projector has a configuration in which an optical unit (optical engine) is arranged inside an exterior case (exterior housing) (see, for example, Patent Document 1).
The optical engine described in Patent Literature 1 includes a light source device, a light modulation device that modulates a light beam emitted from the light source device according to image information to form an optical image, and a projection optical device that enlarges and projects the optical image. The light source device, the light modulation device, and the projection optical device are configured with a light guide (optical component casing) that is positioned at a predetermined position with respect to the illumination optical axis set inside.
Further, in the projector described in Patent Document 1, an opening is formed on the top surface of the exterior housing corresponding to the position of the light source device so that the light source device can be taken out and replaced when the light source device has reached the end of its life. A structure is adopted in which the opening is closed with a lamp cover and is detachable from the exterior housing.

JP 2003-43583 A

The optical engine described in Patent Document 1 is configured such that the light source device is installed in the optical component casing from the upper side in the vertical direction (the top side of the projector). That is, the light source device cannot be installed in the optical component casing from the lower side in the vertical direction (bottom side of the projector). For example, Patent Document 1 discloses a configuration in which an opening and a lamp cover are formed on the bottom surface of the exterior case. The optical engine described in 1 cannot be applied.
Therefore, there is a demand for a technology that can employ the optical engine as a common component for a plurality of models having different installation directions of the light source device.

  The objective of this invention is providing the projector which can employ | adopt an optical engine as a common component according to several models from which the installation direction of a light source device differs.

  The projector of the present invention includes a light source device, a light modulation device that modulates a light beam emitted from the light source device according to image information to form an optical image, a projection optical device that enlarges and projects the optical image, An optical component housing that positions a light source device and the light modulation device at a predetermined position with respect to an illumination optical axis set therein, wherein the light source device includes a light source lamp that emits discharge light, a cross-section substantially A reflector that expands in a concave shape and reflects a light beam emitted from the light source lamp; and a lamp housing that has a light source device fixing portion for supporting the light source lamp and the reflector and fixing the reflector to the optical component housing. The light source device fixing portion is formed with a contact surface that contacts the optical component casing, and the optical component casing is provided with the projector at a predetermined position. A light source device supporting portion configured to be connected to the light source device fixing portion from both the upper side in the vertical direction and the lower side in the vertical direction, and supporting the light source device. A first positioning surface that contacts the contact surface from above in the direction and positions the light source device at a predetermined position with respect to the illumination optical axis; and contacts the contact surface from below in the vertical direction to illuminate the light source device. A second positioning surface positioned at a predetermined position with respect to the optical axis is formed, and the first positioning surface and the second positioning surface have a rotationally symmetric shape with the illumination optical axis as a center. Features.

Here, as the reflector, either a parabolic reflector or an elliptical reflector may be adopted.
In addition, the first positioning surface and the second positioning surface are not limited to a planar shape, and may have other shapes such as a curved surface shape. The same applies to the contact surface.
Furthermore, the first positioning surface and the second positioning surface may each be formed one by one, or a plurality of each may be formed. The same applies to the contact surface.

According to the present invention, since the optical component housing has the light source device support portion and the lamp housing has the light source device fixing portion, as shown below, the light source device with respect to the optical component housing. Can be installed in two ways.
For example, when the light source device is installed from the upper side in the vertical direction with respect to the optical component casing, it can be implemented as follows.
That is, the contact surface of the light source device fixing portion in the light source device is brought into contact with the first positioning surface of the light source device support portion in the optical component casing. In this state, the light source device is positioned at a predetermined position with respect to the illumination optical axis. Then, by connecting the light source device support portion and the light source device fixing portion, the light source device is installed (fixed) with respect to the optical component casing.

Further, for example, when the light source device is installed from the lower side in the vertical direction with respect to the optical component casing, it can be implemented as follows.
That is, the posture state (the light flux emitted from the light source device is reversed) with respect to the posture state of the light source device when the light source device is installed from the upper side in the vertical direction with respect to the optical component casing described above. The contact surface of the light source device fixing portion is brought into contact with the second positioning surface of the light source device support portion in a posture state rotated by 180 ° about the central axis. In this state, the light source device is positioned at a predetermined position with respect to the illumination optical axis, similarly to the positioning state when the light source device is installed from the upper side in the vertical direction with respect to the optical component casing described above. Then, by connecting the light source device support portion and the light source device fixing portion, the light source device is installed (fixed) with respect to the optical component casing.

As described above, the light source device can be installed on the optical component casing from both the upper side in the vertical direction and the lower side in the vertical direction. For example, in a projector in which an opening and a lamp cover are formed on the top surface of the exterior casing In the case of the projector in which the light source device is installed in the optical component casing from the upper side in the vertical direction and the opening and the lamp cover are formed on the bottom surface of the outer casing, the light source device is viewed from the lower side in the vertical direction. It is possible to adopt a structure that is installed in an optical component casing.
Therefore, the optical engine in which the light source device, the light modulation device, and the optical component housing are integrated can be adopted as a common component corresponding to a plurality of models having different installation directions of the light source device, and the object of the present invention can be achieved.

By the way, for example, the first positioning surface and the second positioning surface are formed to face each other. Further, the contact surface is composed of two parts, a first contact surface that contacts the first positioning surface and a second contact surface that contacts the second positioning surface, and is configured to face each other. . When the light source device is installed from the upper side in the vertical direction with respect to the optical component housing, the first positioning surface and the first contact surface are brought into contact with each other. Further, when the light source device is installed from the lower side in the vertical direction with respect to the optical component housing, the light source device when the light source device is installed from the upper side in the vertical direction with respect to the optical component housing described above. The second positioning surface and the second contact surface are brought into contact with each other in the same posture state as the posture state. When configured in this manner, the first positioning surface and the second positioning are determined in a state in which the light source device is installed from the upper side in the vertical direction and from a lower side in the vertical direction with respect to the optical component casing. The positioning state of the light source device with respect to the illumination optical axis is different due to the effect of the distance from the surface and the distance from the first contact surface to the second contact surface.
In the present invention, the first positioning surface and the second positioning surface have a rotationally symmetric shape about the illumination optical axis. For this reason, as described above, by installing the light source device in a different posture state in the case of installing the light source device from the upper side in the vertical direction and in the case of installing from the lower side in the vertical direction with respect to the optical component casing, The positioning state of the light source device with respect to the illumination optical axis can be the same in the state in which the light source device is installed from the upper side in the vertical direction and the state in which the light source device is installed from the lower side in the vertical direction.

  In the projector according to the aspect of the invention, the light source device support portion includes a pair of positioning portions each having a flat plate shape extending toward the light beam incident side along a horizontal plane perpendicular to the vertical direction, and the light source device fixing portion is A first fixing portion and a second fixing portion each having a planar contact surface corresponding to the pair of positioning portions, wherein the pair of positioning portions rotate around the illumination optical axis. It has a symmetrical shape, and each end face on the upper side in the vertical direction is configured as the first positioning surface that comes into contact with the contact surfaces of the first fixed portion and the second fixed portion, respectively, and the vertical direction Each end surface on the lower side is preferably configured as the second positioning surface that abuts on the abutting surface of the second fixing portion and the first fixing portion, respectively.

According to the present invention, when the light source device is installed from the upper side in the vertical direction with respect to the optical component housing, the first end surface (first positioning surface) on the upper side in the vertical direction of the pair of positioning portions is first. The light source device can be easily installed with respect to the optical component casing by simply contacting the contact surfaces of the fixed portion and the second fixed portion. Further, when the light source device is installed from the lower side in the vertical direction with respect to the optical component housing, the light source device when the light source device is installed from the upper side in the vertical direction with respect to the optical component housing described above. Each contact surface of the second fixed portion and the first fixed portion on each end surface (second positioning surface) on the lower side in the vertical direction of the pair of positioning portions in a posture state that is upside down with respect to the posture state The light source device can be easily installed with respect to the optical component casing simply by abutting each of them.
Further, since the support structure of the light source device with respect to the optical component casing is implemented at two locations, that is, the pair of positioning portions, the first fixing portion, and the second fixing portion, the light source device is supported with respect to the optical component casing. The state can be maintained well.

In the projector according to the aspect of the invention, it is preferable that the pair of positioning portions is formed so that a flat plate-shaped thickness direction center position is located on a horizontal plane that passes through the illumination optical axis and is orthogonal to the vertical direction.
By the way, in a state where each first positioning surface and each second positioning surface are separated from a horizontal plane that passes through the illumination optical axis and is perpendicular to the vertical direction, manufacturing errors of the pair of positioning portions, the first fixing portion, and the first fixing surface It is difficult to position the light source device at a predetermined position with respect to the illumination optical axis due to the influence of the manufacturing error of the fixed portion 2.
According to the present invention, the pair of positioning portions are formed so that the center position in the thickness direction of the flat plate shape is positioned on the horizontal plane that passes through the illumination optical axis and is orthogonal to the vertical direction. The respective separation distances between the second positioning surfaces and the horizontal plane can be the same, and the first positioning surfaces and the second positioning surfaces can be in close proximity to the horizontal plane. For this reason, while being able to position a light source device favorably in the predetermined position with respect to an illumination optical axis, a positioning state can be maintained stably.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[Configuration of projector]
FIG. 1 is a plan view showing a schematic configuration of the projector 1.
The projector 1 is an optical device that modulates a light beam emitted from a light source according to image information to form image light, and enlarges and projects the image light on a projection surface such as a screen. As shown in FIG. 1, the projector 1 is roughly composed of a substantially rectangular parallelepiped outer casing 2 and an optical unit (optical engine) 3 housed in the outer casing 2.
Although not shown in the drawings, in the exterior housing 2, in addition to the optical unit 3, a power supply unit that supplies external power to the constituent members of the projector 1, a cooling unit that cools the interior of the projector 1, and a projector It is assumed that a control device or the like for controlling the whole 1 is arranged.

The exterior housing 2 is a synthetic resin product by injection molding or the like, and configures the upper case, the front surface, the back surface, and the side surface of the projector 1, and the bottom surface, the front surface, the back surface, and the side surface of the projector 1, respectively. It consists of a lower case. Each case is fixed to each other with a screw or the like.
The exterior casing 2 is not limited to being made of synthetic resin, but may be formed of other materials, for example, metal.

FIG. 2 is a perspective view showing a schematic configuration of the optical unit 3. FIG. 2 shows a state in which the light source device 10 is installed from the lower side in the vertical direction with respect to the optical component casing 60.
The optical unit 3 is disposed inside the exterior housing 2 and forms an image light to be enlarged and projected. As shown in FIG. 1 or 2, the optical unit 3 includes a light source device 10, a uniform illumination optical system 20 (FIG. 1), a color separation optical system 30 (FIG. 1), a relay optical system 35 (FIG. 1), an optical The light source device 10, the optical elements constituting the optical systems 20 to 35, the optical device 40, and the projection optical system 50 are configured with a predetermined illumination optical axis. It is positioned and adjusted and installed in the optical component casing 60 in which A (FIG. 1) is set.

The light source device 10 illuminates the optical device 40 by emitting light beams emitted from the light source lamp 11 in a certain direction. As illustrated in FIG. 1, the light source device 10 includes a light source lamp 11 that performs discharge light emission, a main reflecting mirror 12 as a reflector, and a parallelizing concave lens 14. Although the specific structure of the light source device 10 will be described later, the light source device 10 is housed and disposed in the lamp housing 15 so that the light source device 10 is placed in a predetermined position with respect to the optical component housing 60 (the central axis of the light beam emitted from the light source device 10 and the optical axis). It is positioned at a position where the illumination optical axis A set in the component housing 60 coincides.
The light beam emitted from the light source lamp 11 is emitted as focused light by the main reflecting mirror 12 with the emission direction aligned in front of the light source device 10, collimated by the collimating concave lens 14, and applied to the uniform illumination optical system 20. It is injected.
Here, as the light source lamp 11, a halogen lamp, a metal halide lamp, or a high-pressure mercury lamp is frequently used. Further, the main reflecting mirror 12 is configured as an elliptical reflector in FIG. 1, but may be configured as a parabolic reflector that reflects the light beam emitted from the light source lamp 11 in a substantially parallel manner. In this case, the collimating concave lens 14 is omitted.

The uniform illumination optical system 20 is an optical system that divides the light beam emitted from the light source device 10 into a plurality of partial light beams and uniformizes the in-plane illuminance of the illumination area. As shown in FIG. 1, the uniform illumination optical system 20 includes a first lens array 21, a second lens array 22, a polarization conversion element 23, and a superimposing lens 24.
The first lens array 21 has a function as a light beam splitting optical element that splits a light beam emitted from the light source device 10 into a plurality of partial light beams, and is arranged in a matrix in a plane orthogonal to the illumination optical axis A. A plurality of small lenses are provided.
The second lens array 22 is an optical element that condenses a plurality of partial light beams divided by the first lens array 21 described above, and is matrixed in a plane orthogonal to the illumination optical axis A, like the first lens array 21. It has the structure provided with the several small lens arranged in a shape.

The polarization conversion element 23 is a polarization conversion element that aligns the polarization direction of each partial light beam divided by the first lens array 21 with linear polarization in substantially one direction.
Although not shown, the polarization conversion element 23 has a configuration in which polarization separation films and reflection films that are inclined with respect to the illumination optical axis A are alternately arranged. The polarization separation film transmits one polarized light beam among the P-polarized light beam and S-polarized light beam included in each partial light beam, and reflects the other polarized light beam. The reflected other polarized light beam is bent by the reflection film and emitted in the emission direction of the one polarized light beam, that is, the direction along the illumination optical axis A. Any of the emitted polarized light beams is polarized and converted by a phase difference plate provided on the light beam exit surface of the polarization conversion element 23, and the polarization directions of almost all the polarized light beams are aligned. By using such a polarization conversion element 23, it is possible to align the light beam emitted from the light source lamp 11 with a polarized light beam in substantially one direction, so that the utilization factor of the light source light used in the optical device 40 is improved. Can do.

  The superimposing lens 24 condenses a plurality of partial light beams that have passed through the first lens array 21, the second lens array 22, and the polarization conversion element 23, and superimposes them on image forming areas of three liquid crystal panels (to be described later) of the optical device 40. This is an optical element.

As shown in FIG. 1, the color separation optical system 30 includes two dichroic mirrors 31 and 32 and a reflection mirror 33, and a plurality of partial light beams emitted from the uniform illumination optical system 20 by the dichroic mirrors 31 and 32. Is separated into three color lights of red (R), green (G), and blue (B).
The dichroic mirrors 31 and 32 are optical elements in which a wavelength selection film that reflects a light beam in a predetermined wavelength region and transmits a light beam in another wavelength region is formed on a substrate. The dichroic mirror 31 disposed in the front stage of the optical path is a mirror that reflects blue light and transmits other color light. Further, the dichroic mirror 32 disposed at the rear stage of the optical path is a mirror that reflects green light and transmits red light.

  As shown in FIG. 1, the relay optical system 35 includes an incident side lens 36, a relay lens 38, and reflection mirrors 37 and 39. The relay optical system 35 transmits red light transmitted through the dichroic mirrors 31 and 32 constituting the color separation optical system 30. It has a function of guiding light to the optical device 40. The reason why such a relay optical system 35 is provided in the optical path of the red light is that the length of the optical path of the red light is longer than the length of the optical path of the other color light, and thus the use of light due to light divergence or the like. This is to prevent a decrease in efficiency. In this embodiment, the length of the optical path of red light is long, and thus such a configuration is used. However, a configuration in which the length of the optical path of blue light is increased and the relay optical system 35 is used for the optical path of blue light is also considered. It is done.

  The blue light separated by the dichroic mirror 31 described above is bent by the reflection mirror 33 and then supplied to the optical device 40 via the field lens 41. Further, the green light separated by the dichroic mirror 32 is supplied to the optical device 40 through the field lens 41 as it is. Further, the red light is condensed and bent by the lenses 36 and 38 and the reflection mirrors 37 and 39 constituting the relay optical system 35 and supplied to the optical device 40 via the field lens 41. In addition, the field lens 41 provided in the optical path upstream of each color light of the optical device 40 converts each partial light beam emitted from the second lens array 22 into a light beam parallel to the principal ray of each partial light beam. Is provided.

  The optical device 40 modulates an incident light beam according to image information to form image light (color image). As shown in FIG. 1, the optical device 40 includes three liquid crystal panels 42R, 42G, and 42B (light-side liquid crystal panels 42R, green light-side liquid crystal panels 42G, 42G, as light modulation devices to be illuminated. The liquid crystal panel on the blue light side is 42B), and a cross dichroic prism 43 as a color synthesizing optical device. As shown in FIG. 1, an incident-side polarizing plate 44 is interposed between the field lens 41 and the liquid crystal panels 42R, 42G, and 42B, and the liquid crystal panels 42R, 42G, and 42B and the cross dichroic prism 43 are disposed. Between them, an exit-side polarizing plate 45 as an exit-side polarizing element is interposed, and light modulation of each color light incident by the entrance-side polarizing plate 44, the liquid crystal panels 42R, 42G, and 42B, and the exit-side polarizing plate 45 is performed. Is done.

The incident-side polarizing plate 44 receives light of each color whose polarization direction is aligned in approximately one direction by the polarization conversion element 23, and is substantially the same as the polarization direction of the light beam aligned by the polarization conversion element 23 among the incident light beams. Only polarized light in the direction is transmitted, and other light beams are absorbed. The incident-side polarizing plate 44 has a configuration in which a polarizing film is pasted on a translucent substrate such as sapphire glass or quartz.
Although not specifically shown, the liquid crystal panels 42R, 42G, and 42B have a configuration in which a liquid crystal as an electro-optical material is hermetically sealed between a pair of transparent glass substrates, and according to a drive signal from the control device. Thus, the alignment state of the liquid crystal is controlled, and the polarization direction of the polarized light beam emitted from the incident side polarizing plate 44 is modulated.

The exit-side polarizing plate 45 has the same configuration as that of the incident-side polarizing plate 44, and of the light beams emitted from the liquid crystal panels 42R, 42G, and 42B, the polarization direction orthogonal to the transmission axis of the light beam in the incident-side polarizing plate 44. Only the light beam having a light is transmitted and other light beams are absorbed.
The cross dichroic prism 43 is an optical element that forms image light (color image) by combining modulated light modulated for each color light emitted from the emission-side polarizing plate 45. The cross dichroic prism 43 has a square shape in plan view in which four right angle prisms are bonded together, and two dielectric multilayer films are formed on the interface where the right angle prisms are bonded together. These dielectric multilayer films transmit the color light through the exit side polarizing plate 45 disposed on the side facing the projection optical system 50 (G color light side), and the remaining two exit side polarizing plates 45 (R color light side and Reflects colored light via the B color light side). In this way, each color light modulated by each incident-side polarizing plate 44, each liquid crystal panel 42R, 42G, 42B, and each emission-side polarizing plate 45 is synthesized to form a color image.

  The projection optical system 50 is configured as a combined lens obtained by combining a plurality of lenses, and enlarges and projects a color image formed by the optical device 40 on a screen (not shown).

[Support structure of light source device for optical component casing]
FIG. 3 is an exploded perspective view showing a support structure of the light source device 10 with respect to the optical component casing 60. In FIG. 3, for convenience of explanation, in the optical unit 3, only the optical component casing 60 and the light source device 10 are illustrated, and other optical components are omitted.
Hereinafter, the structure of the optical component housing 60 and the structure of the lamp housing 15 constituting the light source device 10 will be described in order, and then the support structure (installation method) of the light source device 10 with respect to the optical component housing 60 will be described. .

[Structure of optical component casing]
The optical component housing 60 is a component storage member 60A (FIG. 2) that installs the light source device 10, the optical elements constituting the optical systems 20 to 35, the optical device 40, and the projection optical system 50 at predetermined positions with respect to the illumination optical axis A. ) And a lid-like member 60B (FIG. 2) that closes the upper opening of the component storage member 60A.

As shown in FIG. 3, the component housing member 60 </ b> A constitutes the bottom surface and the side surface of the optical component housing 60. As shown in FIG. 3, the component storage member 60 </ b> A includes a component storage portion 61, a projection optical system support portion 62, and a light source device support portion 63 that are integrally formed.
As shown in FIG. 3, the component storage portion 61 is formed in a container shape having an upper end surface opened and having a substantially L shape in plan view, and the above-described optical components 21 to 24, 31 to 33, and 36 to 39. , 40 is housed.
As shown in FIG. 3, in the component storage unit 61, a plurality of optical components 21 to 24, 31 to 33, 36 to 39, 41 and 44 are slidably fitted into the inner surface from above. A groove 611 is formed.

As shown in FIG. 3, the projection optical system support unit 62 is formed on a side surface on one end side of the L-shaped planar view in the component storage unit 61, and the lens optical axis of the projection optical system 50 is set at a predetermined position with respect to the illumination optical axis A. This is a portion for supporting and fixing the projection optical system 50 in a state where the projection optical system 50 is positioned.
As shown in FIG. 3, the projection optical system support 62 is formed in a substantially rectangular shape in plan view, and in a substantially central portion in plan view, a circular shape corresponding to the light beam emission position from the cross dichroic prism 43 of the optical device 40 is formed. A hole 621 having a shape is formed, and a color image formed by the optical device 40 enters the projection optical system 50 through the hole 621.

As shown in FIG. 3, the light source device support portion 63 is formed on the side surface of the component storage portion 61 on the other end side of the L shape in plan view, and the central axis of the light beam emitted from the light source device 10 is the illumination optical axis A. It is a part which supports and fixes the light source device 10 in a state matched with.
As shown in FIG. 3, the light source device support unit 63 includes a support unit main body 631 and a pair of positioning units 6321 and 6322 (positioning unit 6321 positioned on the right side when viewed from the light beam incident side is positioned on the left side. The positioning portion is 6322).
As shown in FIG. 3, the support portion main body 631 is configured by a plate body having a substantially rectangular shape in plan view, and is integrally formed on the side surface on the other end side of the L-shape in plan view in the component storage portion 61. is there.
As shown in FIG. 3, an opening 6311 having a substantially rectangular shape in plan view is formed in the support body 631, and a light beam emitted from the light source device 10 enters the uniform illumination optical system 20 through the opening 6311. To do.

As shown in FIG. 3, the pair of positioning portions 6321 and 6322 protrude from the end surface on the light beam incident side of the support portion main body 631, and the light source device 10 is emitted from the light source device 10 at a predetermined position relative to the optical component housing 60. This is a portion positioned at a position where the central axis of the luminous flux coincides with the illumination optical axis A).
As shown in FIG. 3, the pair of positioning portions 6321 and 6322 are arranged in the horizontal direction (the projector 1 is placed in the normal position (the installation surface of the desk or the like) with the opening 6311 sandwiched between the end surfaces of the light beam incident side of the support body 631. Facing the vertical position in a state of being placed on the ceiling) or in a ceiling suspension position (a state suspended from the ceiling or the like so as to be upside down with respect to the normal position) Projected to The pair of positioning portions 6321 and 6322 have a 180 ° rotationally symmetric shape with the illumination optical axis A as the center (see FIG. 5).
In the following description, “vertical direction” is used as a vertical direction in a state where the projector 1 is installed in a normal position or a suspended position, and “horizontal direction” is used as a direction orthogonal to the vertical direction.

As shown in FIG. 3, the positioning portion 6321 is formed in a flat plate shape, and the plate surface extends in parallel to a horizontal plane (a plane orthogonal to the vertical direction).
An end face on the upper side in the vertical direction (upper end face in FIG. 3) of the positioning portion 6321 is when the light source device 10 is installed from the upper side in the vertical direction (the top surface side of the projector 1) with respect to the light source device support portion 63. In addition, the light source device 10 functions as a first positioning surface 6321A that comes into contact with a contact surface of a first fixing portion described later.
Further, the end surface on the lower side in the vertical direction (the lower end surface in FIG. 3) of the positioning portion 6321 is when the light source device 10 is installed from the lower side in the vertical direction (the bottom surface side of the projector 1) with respect to the light source device support portion 63. The light source device 10 functions as a second positioning surface 6321B that comes into contact with a contact surface of a second fixing portion described later.

  Further, as shown in FIG. 3, the positioning portion 6321 penetrates through the positioning surfaces 6321A and 6321B, and positioning holes 6321C for positioning the light source device 10 with respect to the positioning portion 6321, and the light source device 10 A fixing hole 6321 </ b> D is formed in the positioning portion 6321.

  Further, as shown in FIG. 3, the positioning portion 6321 is formed in a plate shape having a triangular shape in plan view, and the light incident on the side end portion of the positioning portion 6321 and the support portion main body 631 so that the plate surface is along the vertical direction. A reinforcing portion 633 connected to the side end surface is provided.

As described above, the positioning portion 6322 has a rotationally symmetric shape of 180 ° centering on the illumination portion 6321 and the illumination optical axis A, and as shown in FIG. The positioning hole 6322C and the fixing hole 6322D are the same as the hole 6321D. Further, the positioning portion 6322 is provided with a reinforcing portion 633 similarly to the positioning portion 6321.
An end face on the upper side in the vertical direction of the positioning portion 6322 (upper end face in FIG. 3) has a 180 ° rotationally symmetric shape centering on the second positioning surface 6321B and the illumination optical axis A in the positioning portion 6321. When the light source device 10 is installed from the upper side in the vertical direction (the top surface side of the projector 1) with respect to the light source device support portion 63, the second abutting surface of the second fixing portion described later of the light source device 10 is contacted. 1 as a positioning surface 6322A.
Further, the end surface on the lower side in the vertical direction of the positioning portion 6322 (the lower end surface in FIG. 3) has a 180 ° rotationally symmetric shape centering on the first positioning surface 6321A and the illumination optical axis A in the positioning portion 6321. When the light source device 10 is installed from the lower side in the vertical direction (bottom surface side of the projector 1) with respect to the light source device support portion 63, the second contact with the contact surface of the first fixing portion described later of the light source device 10 is performed. Functions as a positioning surface 6322B.

The pair of positioning portions 6321 and 6322 described above are formed so that the flat plate-shaped thickness direction center position O is positioned on the horizontal plane HS (see FIG. 5) passing through the illumination optical axis A and orthogonal to the vertical direction. .
That is, the positioning surfaces 6321A and 6321B in the positioning unit 6321 are positioned at mirror-symmetric positions with the horizontal plane HS as the center. Similarly, the positioning surfaces 6322A and 6322B in the positioning portion 6322 are positioned at mirror-symmetric positions with the horizontal plane HS as the center.

[Lamp housing structure]
FIG. 4 is a view showing the structure of the lamp housing 15. Specifically, FIG. 4 is a perspective view of the light source device 10 as viewed from the light beam emission rear side. In the following, for convenience of explanation, the central axis (illumination optical axis A) of the light beam emitted from the light source device 10 is the Z axis, and two axes orthogonal to the Z axis are the X axis (horizontal axis) and the Y axis, respectively. (Vertical axis).
As shown in FIG. 4, the lamp housing 15 includes a unit 10A in which the light source lamp 11 and the main reflecting mirror 12 are integrated (hereinafter referred to as a light source device main body 10A), and a collimated concave lens 14 (FIG. 1). These members 10A and 14 are integrated. As shown in FIG. 4, the lamp housing 15 includes a base 151, a light source device main body support portion 152, a parallelizing concave lens support portion 153, and a pair of light source device fixing portions 154.

As shown in FIG. 4, the base 151 is composed of a plate body extending along a horizontal plane (XZ plane), and in a state where the light source device 10 is assembled, the light emission rear side of the main reflecting mirror 12 (in FIG. 4). , -Z-axis direction side) is disposed so as to cover the plane.
As shown in FIG. 4, in the base 151, a connector disposition portion 1512 for disposing a connector 1511 is erected upward at an end edge in the + X-axis direction.
The connector 1511 is connected to a lead wire (not shown) connected to the light source lamp 11, and is a connector (not shown) provided inside the exterior housing 2 in a state where the light source device 10 is installed in the optical component casing 60. Connect with. And by connecting each said connector, electric power is supplied to the light source lamp 11 from the said power supply unit.

The light source device main body support portion 152 is a portion that supports the light source device main body 10A and has a cylindrical shape formed in a rectangular frame shape in plan view as shown in FIG. The light emission rear side edge (−Z axis direction side edge in FIG. 4) at the −Y axis direction side end) is connected to the base 151.
In the light source device main body support portion 152, the cylindrical + Z-axis direction end portion extends inward to reduce the cylindrical opening area as shown in FIG. A connecting portion 1521 to be connected is formed. Then, the light source device main body 10A is positioned at a predetermined position with respect to the lamp housing 15 by contacting the light emission front side opening edge of the main reflecting mirror 12 to the light emission rear side end surface of the connection portion 1521, and a spring or the like (not shown) It is fixed to the lamp housing 15 by an urging member. In such a state, one cylindrical opening of the light source device main body support 152 is closed by the light source device main body 10A.

  The collimating concave lens support portion 153 is a portion that supports the collimating concave lens 14, and, as shown in FIG. 4, projects from the connection portion 1521 toward the light emission front side (+ Z axis direction in FIG. 4), and is viewed in plan view. It has a cylindrical shape formed in a substantially rectangular shape. The collimating concave lens support portion 153 supports and fixes the collimating concave lens 14 at a cylindrical opening peripheral edge portion on one side of the cylindrical shape (+ Z axis direction side in FIG. 4). In such a state, one cylindrical opening portion of the collimating concave lens support portion 153 is closed by the collimating concave lens 14. That is, the cylindrical opening portions of the light source device main body support 152 and the parallelizing concave lens 14 are closed by the light source device main body 10A and the parallelizing concave lens 14, and the inside of the light source device main body support 152 and the parallelizing concave lens support 153 is substantially sealed. It is a space.

As shown in FIG. 4, the pair of light source device fixing portions 154 protrude from the side end surfaces that intersect the horizontal direction (X-axis direction in FIG. 4) of the light source device main body support portion 152 and the parallelizing concave lens support portion 153. The light source device 10 is a portion for fixing the light source device 10 to the light source device support portion 63 of the optical component casing 60.
As shown in FIG. 4, the pair of light source device fixing portions 154 are provided so as to be opposed to each other in the horizontal direction at the side ends of the light source device main body support portion 152 and the parallelizing concave lens support portion 153 and to protrude away from each other. Has been.
In the following, in the pair of light source device fixing portions 154, when the light source device 10 is viewed from the light emission front side, the fixing portion provided on the right side is provided on the first fixing portion 1541 and on the left side. The fixing part will be described as a second fixing part 1542.

As shown in FIG. 4, the first fixing portion 1541 is formed in a flat plate shape, and the plate surface extends in parallel to a horizontal plane (a plane perpendicular to the vertical direction).
One plate surface (upper end surface in FIG. 4) of the pair of plate surfaces in the first fixing portion 1541 functions as a contact surface 1541A that contacts the pair of positioning portions 6321 and 6322.

As shown in FIG. 4, the first fixing portion 1541 corresponds to the positioning holes 6321 </ b> C and 6322 </ b> C of the pair of positioning portions 6321 and 6322, and positions the light source device 10 to the pair of positioning portions 6321 and 6322. A positioning projection 1541B is formed for this purpose.
Further, as shown in FIG. 4, the first fixing portion 1541 corresponds to the fixing holes 6321D and 6322D of the pair of positioning portions 6321 and 6322, and fixes the light source device 10 to the pair of positioning portions 6321 and 6322. A fixing hole 1541C for this purpose is formed.

  The second fixing portion 1542 has a shape similar to that of the first fixing portion 1541, although not specifically illustrated. That is, the second fixing portion 1542 is similar to the abutting surface 1541A, the positioning projection 1541B, and the fixing hole 1541C in the first fixing portion 1541. Abbreviation).

  Each of the contact surfaces 1541A and 1542A described above has a pair of positioning portions 6321 and 650 with respect to a horizontal plane HS passing through the central axis (corresponding to the illumination optical axis A in FIG. 5) of the light beam emitted from the light source device 10. It is formed so as to be positioned at a position offset in the vertical direction by half the thickness of 6322.

[Installation method of the light source device to the optical component casing]
Next, the installation method of the light source device 10 with respect to the optical component casing 60 will be described.
FIG. 5 is a diagram for explaining a method of installing the light source device 10 with respect to the optical component casing 60. Specifically, FIG. 5 is a cross-sectional view of the support structure of the light source device 10 with respect to the optical component casing 60 taken along a plane along a plane orthogonal to the illumination optical axis A and viewed from the light source device 10 side. FIG. 5A shows a case where the light source device 10 is installed on the optical component casing 60 from the upper side in the vertical direction. FIG. 5B shows a case where the light source device 10 is installed from the lower side in the vertical direction with respect to the optical component casing 60.

[Installation method from above in the vertical direction]
For example, when adopting a configuration in which the light source device 10 is installed from the upper side in the vertical direction with respect to the optical component casing 60, the projector 1 is configured as follows.
That is, as shown in FIG. 5A, the light source device 10 is attached to and detached from the optical component housing 60 inside the exterior housing 2 at a position corresponding to the position of the light source device 10 on the top surface of the exterior housing 2. A free opening 2A is formed. Further, a lamp cover 2B that can close the opening 2A is detachably provided in the opening 2A.

Then, the light source device 10 is installed on the optical component casing 60 as shown below.
That is, first, the lamp cover 2B is removed from the opening 2A.
Next, a posture state in which the base body 151 is positioned on the upper side in the vertical direction (the light source device 10 in the state of FIG. 4 is rotated by 180 ° about the central axis (illumination optical axis A) of the light beam emitted from the light source device 10. The light source device 10 is inserted into the exterior casing 2 from above in the vertical direction through the opening 2A. Then, the positioning protrusion 1541B in the first fixing portion 1541 is fitted into the positioning hole 6321C in the positioning portion 6321, and the positioning protrusion (not shown) in the second fixing portion 1542 is fitted in the positioning hole in the positioning portion 6322. Fit into 6322C. Further, the contact surface 1541A of the first fixing portion 1541 is brought into contact with the first positioning surface 6321A of the positioning portion 6321, and the contact surface 1542A of the second fixing portion 1542 is contacted with the first positioning surface of the positioning portion 6322. 6322A is contacted. In this state, as shown in FIG. 5A, the light source device 10 has a predetermined position with respect to the optical component housing 60 (a position where the central axis of the light beam emitted from the light source device 10 and the illumination optical axis A coincide with each other). ).
Then, the two fixing screws 155 (FIGS. 4 and 5A) connect the fixing hole 1541C of the first fixing portion 1541 and the fixing hole 6321D of the positioning portion 6321 and also the second fixing portion 1542. Are connected to the fixing hole 6322D of the positioning portion 6322, and the light source device 10 is fixed to the optical component casing 60.
In addition, when removing the light source device 10 from the optical component casing 60, the procedure is reversed.

[Installation method from the lower side in the vertical direction]
For example, when adopting a configuration in which the light source device 10 is installed from the lower side in the vertical direction with respect to the optical component casing 60, the projector 1 is configured as follows.
That is, as shown in FIG. 5B, the light source device 10 can be freely attached to and detached from the optical component housing 60 inside the exterior housing 2 at a position corresponding to the position where the light source device 10 is disposed on the bottom surface of the exterior housing 2. An opening 2A is formed. Further, a lamp cover 2B capable of closing the opening is provided in the opening 2A so as to be detachable.

Then, the light source device 10 is installed on the optical component casing 60 as shown below.
That is, first, the lamp cover 2B is removed from the opening 2A.
Next, the light source device 10 is inserted into the exterior housing 2 from the lower side in the vertical direction through the opening 2A in a posture state in which the base 151 is positioned on the lower side in the vertical direction (the posture state of the light source device 10 shown in FIG. 4). To do. Then, the positioning protrusion 1541B in the first fixing portion 1541 is fitted into the positioning hole 6322C in the positioning portion 6322, and the positioning protrusion (not shown) in the second fixing portion 1542 is fitted in the positioning hole in the positioning portion 6321. Fit into 6321C. Further, the contact surface 1541A of the first fixing portion 1541 is brought into contact with the second positioning surface 6322B of the positioning portion 6322, and the contact surface 1542A of the second fixing portion 1542 is contacted with the second positioning surface of the positioning portion 6321. 6321B. In this state, as shown in FIG. 5B, the light source device 10 has a predetermined position with respect to the optical component housing 60 (a position where the central axis of the light beam emitted from the light source device 10 and the illumination optical axis A coincide with each other). ).
Then, the two fixing screws 155 (FIGS. 4 and 5B) connect the fixing hole 1541C of the first fixing portion 1541 and the fixing hole 6322D of the positioning portion 6322 and at the same time the second fixing portion 1542. The fixing hole (not shown) is connected to the fixing hole 6321D of the positioning portion 6321, and the light source device 10 is fixed to the optical component casing 60.
In addition, when removing the light source device 10 from the optical component casing 60, the procedure is reversed.

The embodiment described above has the following effects.
In the present embodiment, since the light source device support portion 63 is formed in the optical component casing 60 and the pair of light source device fixing portions 154 are formed in the lamp housing 15, the light source device 10 is placed in the vertical direction upper side and the vertical direction. The projector 1 can be installed on the optical component casing 60 from both sides of the lower side. For example, as shown in FIG. 5A, the projector 1 in which the opening 2A and the lamp cover 2B are formed on the top surface of the exterior casing 2. In this case, a structure in which the light source device 10 is installed in the optical component casing 60 from the upper side in the vertical direction is adopted, and the opening 2A and the lamp cover 2B are formed on the bottom surface of the exterior casing 2 as shown in FIG. In the case of the projector 1 in which is formed, a structure in which the light source device 10 is installed in the optical component casing 60 from the lower side in the vertical direction can be employed.
Accordingly, in the case of the projector 1 shown in FIG. 5A, it is not necessary to form an optical unit (optical engine) corresponding to the case of the projector 1 shown in FIG. The projector 1 can be used as a common part corresponding to a plurality of models having different installation directions, and the projector 1 can be easily manufactured and its manufacturing cost can be reduced.

  By the way, for example, the contact surfaces 1541A and 1542A in the pair of light source device fixing portions 154 are defined as first contact surfaces, and the opposing end surfaces are defined as second contact surfaces. When the light source device 10 is installed from the upper side in the vertical direction with respect to the optical component casing 60, the first positioning surfaces 6321A and 6322A and the first contact surfaces are brought into contact with each other. Further, when the light source device 10 is installed from the lower side in the vertical direction with respect to the optical component housing 60, the light source device 10 is installed from the upper side in the vertical direction with respect to the optical component housing 60 described above. The second positioning surfaces 6321B, 6322B and the second contact surfaces are brought into contact with each other in the same posture state as the posture state of the light source device 10 (the posture state in which the base body 151 is positioned on the upper side in the vertical direction). . When configured in this way, the pair of positioning parts 6321 and 6322 are arranged in a state in which the light source device 10 is installed from the upper side in the vertical direction and a lower side in the vertical direction with respect to the optical component casing 60. The positioning state of the light source device 10 with respect to the illumination optical axis A differs depending on the thickness dimension and the thickness dimension of the pair of light source device fixing portions 154.

  In the present embodiment, the pair of positioning portions 6321 and 6322 have a rotationally symmetric shape with the illumination optical axis A as the center. For this reason, by installing the light source device 10 in a different posture state between the case where the light source device 10 is installed from the upper side in the vertical direction and the case where the light source device 10 is installed from the lower side in the vertical direction with respect to the optical component casing 60, The positioning of the light source device 10 with respect to the illumination optical axis A may be the same in the state in which the light source device 10 is installed from the upper side in the vertical direction and the state in which the light source device 10 is installed from the lower side in the vertical direction. it can. That is, the central axis of the light beam emitted from the light source device 10 can be made to coincide with the illumination optical axis A in a state where it is installed from both the upper side in the vertical direction and the lower side in the vertical direction.

Further, the end surfaces on the upper side in the vertical direction of the pair of positioning portions 6321 and 6322 are configured as first positioning surfaces 6321A and 6322A, and the end surfaces on the lower side in the vertical direction are configured as second positioning surfaces 6321B and 6322B. Yes. For this reason, when installing the light source device 10 from the upper side in the vertical direction with respect to the optical component housing 60, each end surface (first positioning surface 6321A, first positioning surface 6321A, 6322A), the light source device 10 can be easily installed with respect to the optical component casing 60 only by contacting the contact surfaces 1541A and 1542A of the first fixing portion 1541 and the second fixing portion 1542, respectively. Further, when the light source device 10 is installed from the lower side in the vertical direction with respect to the optical component housing 60, the light source device 10 is installed from the upper side in the vertical direction with respect to the optical component housing 60 described above. The second fixing portion is attached to each of the end surfaces (second positioning surfaces 6321B and 6322B) on the lower side in the vertical direction of the pair of positioning portions 6321 and 6322 in a posture state in which the light source device 10 is upside down. The light source device 10 can be easily installed with respect to the optical component casing 60 only by abutting the abutment surfaces 1542A and 1541A of the 1542 and the first fixing portion 1541.
Furthermore, since the support structure of the light source device 10 with respect to the optical component housing 60 is implemented at two locations of the pair of positioning portions 6321 and 6322, the first fixing portion 1541, and the second fixing portion 1542, the optical component housing The supporting state of the light source device 10 with respect to the housing 60 can be maintained satisfactorily.

By the way, in the state where each first positioning surface and each second positioning surface are separated from each other on the horizontal plane HS, manufacturing errors of the pair of positioning portions, manufacturing errors of the first fixing portion and the second fixing portion, etc. Due to the influence, it is difficult to position the light source device 10 at a predetermined position with respect to the illumination optical axis A.
In the present embodiment, the pair of positioning portions 6321 and 6322 are formed such that the flat plate-shaped thickness direction center position O is positioned on the horizontal plane HS, and thus each of the first positioning surfaces 6321A and 6322A and each of the second positioning portions 6321 and 6322 is formed. The positioning surfaces 6321B and 6322B and the horizontal plane HS are made to have the same separation distance, and the first positioning surfaces 6321A and 6322A and the second positioning surfaces 6321B and 6322B are close to the horizontal plane HS. Can do. For this reason, the light source device 10 can be satisfactorily positioned at a predetermined position with respect to the illumination optical axis A, and the positioning state can be stably maintained.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
In the embodiment, the main reflecting mirror 12 is configured as an ellipsoidal reflector. However, the present invention is not limited thereto, and the main reflecting mirror 12 may be configured as a parabolic reflector that reflects the light beam emitted from the light source lamp 11 as substantially parallel light. In this way, when the main reflector is configured as a parabolic reflector, for example, if a configuration in which a translucent substrate such as explosion-proof glass is arranged instead of the collimated concave lens 14, as in the above embodiment, The inside of the light source device main body support portion 152 and the collimated concave lens support portion 153 is formed as a substantially sealed space, and even when the light source lamp 11 is ruptured, it is possible to avoid debris from being scattered outside the light source device 10.

In the above-described embodiment, each of the first positioning surfaces 6321A and 6322A and each of the second positioning surfaces 6321B and 6322B is formed in a planar shape, but is not limited thereto, and is formed in another shape such as a curved surface. It doesn't matter. The same applies to the contact surfaces 1541A and 1542A.
In the above-described embodiment, the contact surface includes two contact surfaces 1541A and 1542A, the first positioning surface includes two positioning surfaces 6321A and 6322A, and the second positioning surface also includes the positioning surfaces 6321B and 6321B. Although it was comprised by two of 6322B, it is not restricted to this. For example, in the light source device 10, when the second fixing portion 1542 is omitted from the pair of light source device fixing portions 154 and the light source device fixing portion is configured by only one of the first fixing portions 1541, The second positioning surface 6321B and the first positioning surface 6322A may be omitted, and the first positioning surface may be constituted by only one of the positioning surfaces 6321A and the second positioning surface may be constituted by only one of the 6322B. That is, the number of the first positioning surfaces and the second positioning surfaces may be set in accordance with the number of contact surfaces in the light source device 10, and may be formed one by one or plural. It is good also as a structure.

In the embodiment, the arrangement positions of the pair of light source device fixing portions 154 and the arrangement positions of the pair of positioning portions 6321 and 6322 are not limited to the arrangement positions described in the embodiment.
In the above-described embodiment, the first positioning surfaces 6321A and 6322A and the second positioning surfaces 6321B and 6322B are formed on the pair of positioning portions 6321 and 6322. The first positioning surface and the second positioning surface may be formed. In this case, a fixing portion may be formed in the light source device corresponding to the first positioning surface and the second positioning surface.

In the above embodiment, only the example of the projector 1 using the three liquid crystal panels 42R, 42G, and 42B is given. However, the present invention is a projector using only one liquid crystal panel, Alternatively, the present invention can be applied to a projector using four or more liquid crystal panels.
In the embodiment, a transmissive liquid crystal panel having a different light incident surface and light emitting surface is used. However, a reflective liquid crystal panel having the same light incident surface and light emitting surface may be used.
In the embodiment, the liquid crystal panel is used as the light modulation device. However, a light modulation device other than liquid crystal, such as a device using a micromirror, may be used. In this case, the polarizing plates 44 and 45 on the light incident side and the light emitting side can be omitted.
In the above embodiment, only the example of the front type projector that projects from the direction of observing the screen is given. However, the present invention is also applicable to a rear type projector that projects from the side opposite to the direction of observing the screen. Is possible.

The best configuration for implementing the present invention has been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described primarily with respect to particular embodiments, but it is not intended to depart from the technical concept and scope of the invention. Various modifications can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations.
Therefore, the description limited to the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such restrictions is included in this invention.

  The projector according to the present invention can be used as a projector used for presentations, home theaters, and the like because the optical engine can be employed as a common component corresponding to a plurality of models having different installation directions of the light source device.

FIG. 2 is a plan view showing a schematic configuration of a projector according to the present embodiment. The perspective view which shows schematic structure of the optical unit in the said embodiment. The disassembled perspective view which shows the support structure of the light source device with respect to the housing | casing for optical components in the said embodiment. The figure which shows the structure of the lamp housing in the said embodiment. The figure for demonstrating the installation method of the light source device with respect to the housing | casing for optical components in the said embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Projector, 10 ... Light source device, 11 ... Light source lamp, 12 ... Main reflector (reflector), 15 ... Lamp housing, 42R, 42G, 42B ... Liquid crystal panel (light) Modulation device), 50... Projection optical system (projection optical device), 60... Optical component housing, 63... Light source device support, 154. 1 fixed portion, 1542... Second fixed portion, 1541A, 1542A... Contact surface, 6321, 6322... Positioning portion, 6321A, 6322A... First positioning surface, 6321B, 6322B. .. second positioning surface, A ... illumination optical axis, HS ... horizontal plane, O ... thickness center position.

Claims (3)

A light source device; a light modulation device that modulates a light beam emitted from the light source device according to image information to form an optical image; a projection optical device that magnifies and projects the optical image; the light source device; and the light modulation A projector including an optical component casing that positions the device at a predetermined position with respect to an illumination optical axis set therein;
The light source device includes a light source lamp that emits discharge light, a reflector that spreads in a substantially concave shape in cross section and reflects a light beam emitted from the light source lamp, and supports the light source lamp and the reflector with respect to the optical component casing. A lamp housing having a light source device fixing portion for fixing,
The light source device fixing portion is formed with a contact surface that contacts the optical component casing,
The optical component housing is configured to be connectable to the light source device fixing portion from both the upper side in the vertical direction and the lower side in the vertical direction in a state where the projector is installed at a predetermined position, and supports the light source device. With a support,
The light source device support section includes a first positioning surface that contacts the contact surface from the upper side in the vertical direction and positions the light source device at a predetermined position with respect to the illumination optical axis, and the contact surface from the lower side in the vertical direction. A second positioning surface that contacts the surface and positions the light source device at a predetermined position with respect to the illumination optical axis;
The projector according to claim 1, wherein the first positioning surface and the second positioning surface have a rotationally symmetric shape with the illumination optical axis as a center. The projector according to claim 1, wherein
The light source device support part includes a pair of positioning parts each having a flat plate shape extending toward a light beam incident side along a horizontal plane perpendicular to the vertical direction,
The light source device fixing portion includes a first fixing portion and a second fixing portion each having the planar contact surface corresponding to the pair of positioning portions,
The pair of positioning portions have a rotationally symmetric shape with the illumination optical axis as a center, and each end surface on the upper side in the vertical direction is in contact with the contact surfaces of the first fixing portion and the second fixing portion. The second positioning surfaces are configured as the first positioning surfaces that contact each other, and the end surfaces on the lower side in the vertical direction are in contact with the second fixing portion and the contact surfaces of the first fixing portion, respectively. A projector characterized by being configured as described above. The projector according to claim 2,
The pair of positioning portions are formed so that a flat plate-like thickness direction center position is positioned on a horizontal plane passing through the illumination optical axis and orthogonal to the vertical direction.

Images