JP2009211974A - Light source device and projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light source device by which a light source body can be positioned surely against a cabinet for the light source device. <P>SOLUTION: The light source device 41 includes the light source device body 41A having a reflector 412, and a lamp housing 414 in which the light source body 41A is stored. The lamp housing 414 includes a first housing 5, a second housing 6, and a biasing member 7. The first housing 5 includes an optical axis direction reference plane which is a reference for positioning a Z axis direction of the light source device body 41A against the lamp housing 414, and a first fixed part which is fixed to the second housing 6. The second housing 6 includes a second fixed part 61 which is fixed to the first housing 5. The biasing member 7 includes the first fixed part, a pinched part 71 which is pinched at the second fixed part 61, and an optical axis direction pressing part 72 by which the reflector 412 is pressed toward the optical axis direction reference plane. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a light source device and a projector.

2. Description of the Related Art Conventionally, there is known a light source device including a light source device body having a light source lamp and a reflector that aligns light emitted from the light source lamp in a certain emission direction, and a light source device housing that houses the light source device body. In such a light source device, the light source device body is positioned at a predetermined position with respect to the light source device casing (see, for example, Patent Document 1).
In the light source device described in Patent Literature 1, the reflector is biased with respect to the lamp housing (light source device housing) by using a plurality of leaf springs, and the light source device body is positioned at a predetermined position with respect to the lamp housing. ing.

JP 2003-287812 A

  However, in the light source device described in Patent Document 1, the position of the leaf spring may move or drop due to an impact applied to the light source device. In such a case, the lamp housing of the light source device body There is a problem that the positioning with respect to is insufficient.

  The objective of this invention is providing the light source device which can position a light source device main body reliably with respect to the housing | casing for light source devices, and a projector.

  A light source device of the present invention includes a light source device having a light source lamp and a reflector that aligns light emitted from the light source lamp in a certain emission direction, and a light source device housing that houses the light source device body. The light source device casing is a first casing disposed on the emission direction side, a second casing disposed on the opposite side to the emission direction, and the first casing. And a biasing member that biases the light source device main body, and the first casing is substantially orthogonal to the optical axis of the light emitted from the reflector. And an optical axis direction reference plane that serves as a positioning reference in the optical axis direction of the light source device main body with respect to the light source device casing by contacting the reflector, and a first fixing fixed to the second casing. And the second housing is fixed to the first fixing portion. Thus, the first housing and the second housing are integrated to each other, and the biasing member is sandwiched between the first fixing portion and the second fixing portion. And an optical axis direction pressing part that presses the reflector toward the optical axis direction reference plane.

  According to such a configuration, the urging member is disposed between the first housing and the second housing, and is sandwiched between the first fixing portion and the second fixing portion, and the reflector. The optical axis direction pressing portion that presses the optical axis toward the optical axis direction reference plane does not cause the position to move or drop out even when an impact is applied to the light source device. Further, the light source device body is urged by the optical axis direction pressing portion, and the reflector abuts on the optical axis direction reference surface so that the optical axis direction with respect to the light source device casing (hereinafter referred to as the Z axis direction). Is positioned. Therefore, the light source device body can be reliably positioned with respect to the light source device housing.

  In the present invention, the first casing is substantially orthogonal to the reference plane in the optical axis direction, is also substantially orthogonal to each other, and abuts on the reflector to contact the optical axis of the light source device main body with respect to the light source device casing. Preferably, the biasing member includes an orthogonal direction pressing portion that presses the reflector toward each orthogonal direction reference plane. .

According to such a configuration, the light source device main body is urged by the orthogonal direction pressing portion, and the reflector is in contact with the orthogonal direction reference plane so that the biaxial direction orthogonal to the optical axis with respect to the light source device housing (Hereinafter, referred to as X-axis direction and Y-axis direction). That is, the light source device body is positioned in the three-axis directions of the X, Y, and Z axes with respect to the light source device housing. Therefore, the light source device main body can be more reliably positioned with respect to the light source device housing.
The urging member includes a plurality of orthogonal direction pressing portions, and each orthogonal direction pressing portion may press the reflector toward each orthogonal direction reference surface, and includes one orthogonal direction pressing portion. You may press a reflector toward each orthogonal direction reference plane by adjusting the pressing direction by an orthogonal direction press part.

  In the present invention, the reflector is formed with a frame-shaped projecting portion that projects outwardly away from the optical axis, and the biasing member is formed in a frame shape corresponding to the projecting portion, It is preferable to provide an abutting portion that abuts over substantially the entire circumference of the overhang portion.

  Here, as described above, when the reflector is biased with respect to the light source device casing by using a plurality of leaf springs, and the light source device body is positioned at a predetermined position with respect to the light source device housing, each plate The spring is only partially in contact with the reflector. Therefore, for example, when a crack occurs in the reflector in a portion where each leaf spring and the reflector are not in contact, there is a problem that a part of the reflector may drop off.

According to the present invention, the reflector is formed with a frame-like projecting portion projecting outwardly away from the optical axis, and the urging member abuts on the substantially entire circumference of the projecting portion. Therefore, even if the reflector is cracked, a part of the reflector does not fall off, and the light source device can be suitably used.
The abutting portion may abut against the overhanging portion in a state of being opposed in the Z-axis direction, or may be in contact with the overhanging portion in a state of being opposed in the X and Y-axis directions. In addition, the abutting portion is stretched over the entire circumference by combining a portion that abuts against the overhanging portion in a state of being opposed in the Z-axis direction and a portion that abuts against the overhanging portion in a state of being opposed in the X and Y-axis directions. You may contact | abut to a protrusion part.

The projector according to the present invention is formed by the light source device described above, a light modulation device that modulates light emitted from the light source device according to input image information to form image light, and the light modulation device. And a projection optical device for enlarging and projecting the image light.
In the present invention, since the projector includes the light source device described above, the projector can enjoy the same effects as the light source device described above.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[Schematic configuration of projector]
FIG. 1 is a schematic diagram illustrating a schematic configuration of the projector 1.
The projector 1 modulates light emitted from a light source according to image information to form a color image (image light), and enlarges and projects this color image on a projection surface (not shown) such as a screen. As shown in FIG. 1, the projector 1 includes a substantially rectangular parallelepiped outer casing 2, a projection lens 3, an optical unit 4, and the like.
The projection lens 3 as a projection optical device is configured as a combined lens in which a plurality of lenses are combined, and enlarges and projects a color image formed by an optical unit 4 described later on a projection surface such as a screen.

  Although not specifically shown in FIG. 1, a space other than the projection lens 3 and the optical unit 4 in the exterior housing 2 is provided with a cooling fan or the like for cooling each component in the projector 1. A cooling unit, a power supply unit that supplies power to each component in the projector 1, a control unit that controls each component in the projector 1, and the like are disposed.

  The optical unit 4 is a unit that forms a color image corresponding to image information by optically processing the light emitted from the light source under the control of the control unit described above. The optical unit 4 includes a light source device 41, an illumination optical device 42, a color separation optical device 43, a relay optical device 44, an optical device 45, and an illumination in which these optical components 41 to 45 are set inside. And an optical component casing 46 disposed at a predetermined position with respect to the optical axis A.

The light source device 41 includes a light source lamp 411 that emits light, and a light source device body 41A that includes a reflector 412 that aligns light emitted from the light source lamp 411 in a certain emission direction, and light whose emission direction is aligned by the reflector 412. And a collimating concave lens 413 for collimating. The light collimated by the collimating concave lens 413 is emitted toward the illumination optical device 42.
In addition, the light source device 41 includes a lamp housing 414 that is connected to the optical component casing 46 and that houses the members 411 to 413. These members 411 to 413 are housed and arranged in the lamp housing 414, so that the predetermined positions with respect to the optical component casing 46 (the optical axis of the light emitted from the light source device 41 and the optical component casing 46). The position is aligned with the illumination optical axis A set inside. The light source device 41 will be described in detail later.

  The illumination optical device 42 includes a first lens array 421, a second lens array 422, a polarization conversion element 423, and a superimposing lens 424. The light emitted from the light source device 41 is divided into a plurality of partial lights by the first lens array 421 and forms an image in the vicinity of the second lens array 422. Each partial light emitted from the second lens array 422 is incident so that its central axis (principal ray) is perpendicular to the incident surface of the polarization conversion element 423, and approximately one type of linearly polarized light is incident on the polarization conversion element 423. As injected. A plurality of partial lights emitted from the polarization conversion element 423 as linearly polarized light and passed through the superimposing lens 424 are superposed on three light modulation devices 451 described later of the optical device 45.

The color separation optical device 43 includes two dichroic mirrors 431 and 432, and a reflection mirror 433, and has a function of separating a plurality of partial lights emitted from the illumination optical device 42 into three color lights of red, green, and blue. Have.
The relay optical device 44 includes an incident side lens 441, a relay lens 443, and reflection mirrors 442 and 444, and each color light separated by the color separation optical device 43 is transmitted to each light modulation device 451 described later of the optical device 45. Has a guiding function.

  The optical device 45 modulates incident light according to image information to form a color image. This optical device 45 includes three light modulation devices 451 (red light side light modulation device 451R, green light side light modulation device 451G, blue light side light modulation device 451B), and each light modulation An incident-side polarizing plate 452 disposed on the upstream side of the optical path of the device 451, an exit-side polarizing plate 453 disposed on the downstream side of the optical path of each light modulation device 451, and a cross dichroic prism 454 are provided.

Each incident-side polarizing plate 452 transmits only light having a polarization direction substantially the same as the polarization direction aligned by the polarization conversion element 423 and absorbs other light. A polarizing film is formed on the translucent substrate. It is affixed and configured.
Each light modulation device 451 has a configuration in which a liquid crystal as an electro-optical material is hermetically sealed between a pair of transparent glass substrates, and is incident by controlling the alignment state of the liquid crystal by a drive signal from the control unit described above. The polarization direction of the light emitted from the side polarizing plate 452 is modulated.
Each exit-side polarizing plate 453 has substantially the same function as the incident-side polarizing plate 452, transmits light having a certain polarization direction out of the light modulated by the light modulation device 451, and transmits other light. Absorb.

  The cross dichroic prism 454 combines the color lights emitted from the emission-side polarizing plates 453 to form a color image. The cross dichroic prism 454 has a substantially square shape in plan view in which four right-angle prisms are bonded together, and two dielectric multilayer films are formed at the interface where the right-angle prisms are bonded together. These dielectric multilayer films transmit the color light emitted from the light modulation device 451G and pass through the emission side polarizing plate 453, and reflect each color light emitted from the light modulation devices 451R and 451B and passing through the emission side polarizing plate 453. . In this way, the color lights are combined to form a color image. The color image formed by the cross dichroic prism 454 is enlarged and projected by the projection lens 3 described above.

[Detailed configuration of light source device]
FIG. 2 is an exploded perspective view of the light source device 41 as viewed obliquely from the front side. FIG. 3 is an exploded perspective view of the light source device 41 as viewed obliquely from the rear side. 2 and 3, the illumination optical axis A (see FIG. 1) will be described as a Z axis, and two axes orthogonal to the Z axis will be described as an X axis and a Y axis, respectively. The same applies to the following drawings.
In addition to the light source lamp 411 and the reflector 412, the light source device main body 41A includes a substantially rectangular parallelepiped connector 415 that is connected to each lead wire 411A of the light source lamp 411 as shown in FIGS.
The connector 415 is for receiving power supply, and is a connector (not shown) provided on the optical component casing 46 by attaching the light source device 41 to the optical component casing 46 (see FIG. 1). By being connected, power is supplied to the light source lamp 411 from the power supply unit described above.

As shown in FIGS. 2 and 3, the lamp housing 414 as the light source device housing includes a first housing 5 disposed on the light emission direction B side (+ Z axis direction side) of the light source device main body 41A. The second housing 6 disposed on the side opposite to the injection direction B (the −Z-axis direction side), the first housing 5, and the biasing member 7 disposed between the second housing 6. .
The first housing 5 as the first housing is a member that is formed in a substantially rectangular tube shape and covers the front side (+ Z-axis direction side) of the light source device main body 41A. As shown in FIG. 2, a substantially circular opening 51 is formed on the front surface (the surface on the + Z-axis direction side) of the first housing 5, and a parallelizing concave lens 413 is fitted into the opening 51. Is fixed.

In addition, on the front side of the upper surface (the surface on the + Y-axis direction side) of the first housing 5, two extending portions extending toward the front side after extending toward the upper side (+ Y-axis direction side) 52 are formed at both ends in the X-axis direction. An insertion hole (not shown) is formed on the upper surface of each extending portion 52 at a substantially central portion, and the light source device main body 41A is provided with a screw 53 inserted into the insertion hole in the optical component casing 46. It is fixed to the optical component casing 46 by being screwed into a screw hole (not shown).
Furthermore, as shown in FIG. 3, an opening 54 having a substantially rectangular frame shape is formed at an end of the first housing 5 on the rear side (−Z-axis direction side). First fixing portions 541 that are fixed to the second housing 6 are provided at the four corner portions of the opening 54. Each first fixing portion 541 is formed with a screw hole 541A along the Z-axis direction.

  The second housing 6 as the second housing is a member that has a substantially U-shaped cross section and covers the upper side, the lower side (the −Y axis direction side), and the rear side of the light source device main body 41A. As shown in FIG. 3, a second fixing portion 61 fixed to the first housing 5 is provided at a position corresponding to each first fixing portion 541 at the front end portion of the second housing 6. Yes. Each second fixing portion 61 has a hole 61A formed at a position corresponding to each screw hole 541A.

The urging member 7 is a member that is formed in a substantially rectangular frame shape and urges the light source device main body 41 </ b> A against the first housing 5. At the four corners of the urging member 7, a clamped portion 71 that is clamped by the first fixed portion 541 and the second fixed portion 61 is provided. In each sandwiched portion 71, holes 71A are formed at positions corresponding to the screw holes 541A and the holes 61A, respectively.
And the 1st housing 5, the 2nd housing 6, and the urging member 7 screw together four screws 419 (refer to Drawing 6) to each screw hole 541A via each hole 61A and each hole 71A. Integrated.

[Light source device body and lamp housing positioning structure]
FIG. 4 is a perspective view of the reflector 412 as viewed from the front side.
As shown in FIG. 4, the reflector 412 is formed in a substantially hemispherical shape, and reflects the light emitted from the light source lamp 411 to align it in a certain emission direction, and the front end of the reflection unit 416. A substantially rectangular frame-shaped projecting portion 417 projecting outward from the optical axis (Z-axis) of light emitted from the reflector 412 and a front surface 418A substantially orthogonal to the Z-axis, The connection part 418 which connects between the part 416 and the four corner parts of the overhang | projection part 417 is provided. The front surface 418A is a reference surface in the optical axis direction of the reflector 412.
The overhanging portion 417 includes a front surface 417A, an inner surface 417B and an outer surface 417C extending from the front surface 417A to the rear side along the Z axis. Of the inner side surface 417B, 417Bx and 417By are reference planes in the X direction and Y direction of the reflector 412, respectively.

FIG. 5 is a perspective view of the first housing 5 as seen from the rear side.
As shown in FIGS. 3 and 5, the first housing 5 includes a facing portion 55 that faces the protruding portion 417 of the reflector 412 and is provided along the opening 54. Protrusions 551 having a substantially trapezoidal cross section are provided at the four corners of the facing portion 55.
Each protrusion 551 has a shape protruding toward the reflector 412 (−Z axis direction side), and the protrusion amount of each protrusion 551 is set to be longer than the length of the inner side surface 417B of the overhang 417 in the Z axis direction. Has been. Each protrusion 551 has an optical axis direction reference surface 551A formed substantially orthogonal to the Z axis, and the two protrusions 551 on the left side in FIG. 5 are formed approximately orthogonal to the X axis. Each of the two protrusions 551 on the lower side in FIG. 5 has a Y-axis direction reference surface 551C formed substantially orthogonal to the Y-axis. Each X-axis direction reference surface 551B and each Y-axis direction reference surface 551C are substantially orthogonal to each optical-axis direction reference surface 551A and are also substantially orthogonal to each other.

FIG. 6 is a diagram illustrating a state in which the first housing 5, the second housing 6, and the biasing member 7 are integrated. Here, FIG. 6A is a view of the light source device 41 viewed from the rear side, and FIG. 6B is a longitudinal sectional view taken along line TT in FIG.
As shown in FIG. 6, each optical axis direction reference surface 551 </ b> A comes into contact with a front surface 418 </ b> A that is a reference surface in the optical axis direction of the reflector 412, thereby positioning the light source device main body 41 </ b> A in the Z axis direction with respect to the first housing 5. Made. In addition, since the protrusion amount of each protrusion part 551 is set more than the length of the Z-axis direction in the inner surface 417B (refer FIG. 4) of the overhang | projection part 417, each optical-axis direction reference surface 551A and front surface 418A. In a state in which the abutting portion is in contact, the facing portion 55 of the first housing and the overhanging portion 417 of the reflector 412 are not in contact with each other.

FIG. 7 is a view showing a state in which the reflector 412 is brought into contact with the first housing 5. In FIG. 7, the vicinity of the lower left protrusion 551 in FIG. 5 is shown in an enlarged manner, and the other protrusions 551 are not shown.
Each X-axis direction reference surface 551B and each Y-axis direction reference surface 551C as orthogonal direction reference surfaces correspond to the X-direction and Y-direction reference surfaces 417Bx and 417By in the reflector 412, as shown in FIG. By making contact, positioning of the light source device main body 41 </ b> A with respect to the first housing 5 in the biaxial directions of the X axis and the Y axis is performed.

FIG. 8 is a plan view of the urging member 7 as viewed from the front side. FIG. 9 is a perspective view of the state in which the urging member 7 is brought into contact with the light source device main body 41 </ b> A as seen obliquely from the rear side.
As shown in FIGS. 2 and 8, the urging member 7 includes two optical axis direction pressing portions 72 formed on two opposed sandwiched portions 71 as shown in FIGS. Arranged between the orthogonal direction pressing portion 73 formed in the sandwiched portion 71 different from each sandwiched portion 71 formed with the optical axis direction pressing portion 72 and each sandwiched portion 71 and extending toward the rear side. And four extending portions 74 having a substantially rectangular plate shape.

As shown in FIG. 2, each optical axis direction pressing portion 72 is a leaf spring-like portion formed to protrude toward the front side.
As shown in FIGS. 2 and 9, the orthogonal direction pressing portion 73 is a leaf spring-like portion formed to extend obliquely toward the rear side. Moreover, the orthogonal direction press part 73 is extended and formed toward the approximate center of the biasing member 7, as shown in FIG.2 and FIG.8.
When integrating the first housing 5, the second housing 6, and the urging member 7, as shown in FIG. 6, each optical axis direction reference surface 551 </ b> A of the first housing 5 and the connecting portion in the reflector 412. The front surface 418A of the 418 is brought into contact, and the biasing member 7 and the second housing 6 are integrated from the rear side of the light source device main body 41A.

Here, when the first housing 5, the second housing 6, and the urging member 7 are integrated, the urging member 7 comes into contact with the light source device main body 41A as shown in FIG.
Specifically, each optical axis direction pressing portion 72 abuts against the overhang portion 417 from the rear side. At this time, each optical axis direction pressing part 72 presses toward the front side, that is, each optical axis direction reference surface 551A (see FIG. 6).
Moreover, the orthogonal direction pressing part 73 contacts the reflecting part 416 from the rear side. At this time, the orthogonal direction pressing portion 73 presses the reflecting portion 416 and causes the reflector 412 to move in the + X-axis direction side and the + Y-axis direction side, that is, each X-axis direction reference surface 551B and each Y-axis direction reference surface 551C ( Press toward (see FIG. 7).
Further, each sandwiched portion 71 contacts the overhanging portion 417 in a state of being opposed in the Z-axis direction, and the extending portion 74 is in contact with the outer surface 417C in a state of being opposed in the X- and Y-axis directions. In other words, in the present embodiment, the contact portion is configured by the sandwiched portion 71 and the extension portion 74, and is in contact with substantially the entire circumference of the overhang portion 417.

According to the present embodiment as described above, the following effects are obtained.
(1) Since the urging member 7 includes the sandwiched portion 71 and the optical axis direction pressing portion 72, the position does not move or drop even if an impact is applied to the light source device 41. The light source device main body 41A is urged by the optical axis direction pressing portion 72, and the front surface 418A of the connection portion 418 in the reflector 412 abuts on each optical axis direction reference surface 551A, so that the Z axis with respect to the lamp housing 414 is achieved. Positioned in the direction. Therefore, the light source device body 41A can be reliably positioned with respect to the lamp housing 414.

(2) The light source device main body 41A is urged by the orthogonal direction pressing portion 73, and the inner side surface 417B of the projecting portion 417 in the reflector 412 is brought into contact with each X-axis direction reference surface 551B and each Y-axis direction reference surface 551C. By contacting, the lamp housing 414 is positioned in the X-axis direction and the Y-axis direction. That is, the light source device body 41A is positioned in the three-axis directions of the X, Y, and Z axes with respect to the lamp housing 414. Therefore, the light source device main body 41A can be more reliably positioned with respect to the lamp housing 414.
(3) The projecting portion 417 is formed on the reflector 412, and the urging member 7 includes the sandwiched portion 71 and the projecting portion 74 that are in contact with substantially the entire circumference of the projecting portion 417. Even if a crack occurs, a part of the reflector 412 does not fall off, and the light source device 41 can be used suitably.

[Modification of Embodiment]
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 urging member 7 includes the optical axis direction pressing portions 72 and the orthogonal direction pressing portions 73, but may include only the optical axis direction pressing portion. However, it is desirable that the light source device main body is positioned in the three axial directions of the X, Y, and Z axes with respect to the light source device casing, and the biasing member includes the optical axis direction pressing portion and the orthogonal direction pressing portion. The configuration of the present invention provided is preferred.
In the embodiment, in the urging member 7, the optical axis direction pressing portion 72 and the orthogonal direction pressing portion 73 are formed in a leaf spring shape, but may be in other shapes. Further, the urging member may be configured by fixing a spring member on the substrate. In short, the biasing member may be a member that is interposed between the first housing and the second housing and biases the light source device main body.

In the embodiment, the orthogonal direction pressing portion 73 is formed to extend obliquely rearward, and by adjusting the pressing direction, the reflector 412 is arranged in each X-axis direction reference surface 551B and each Y-axis direction reference surface 551C. It was pushing towards. On the other hand, it is good also as a structure provided with two orthogonal direction press parts which each press toward each orthogonal direction reference plane, for example. In short, the orthogonal direction pressing portion only needs to be able to press the reflector toward each orthogonal direction reference plane.
In the above-described embodiment, the biasing member 7 extends to be in contact with each of the sandwiched portions 71 that are in contact with the overhanging portion 417 in a state of being opposed in the Z-axis direction, and in contact with the outer surface 417C in a state of being opposed in the X and Y-axis directions. The protruding portions 74 are provided, and the held portions 71 and the extending portions 74 constitute a contact portion. On the other hand, for example, the urging member may include an abutting portion that abuts the overhanging portion in a state of being opposed only in the Z-axis direction. In short, the urging member only needs to have an abutting portion that abuts over the entire circumference of the overhanging portion. Note that the urging member may not include the contact portion.

In the embodiment, the projector 1 includes the three light modulation devices 451. However, the projector 1 may be configured as a projector including two light modulation devices or a projector including four or more light modulation devices.
In the above-described embodiment, the light modulation device 451 employs a configuration in which liquid crystal, which is an electro-optic material, is sealed and transmitted through a pair of transparent glass substrates and transmits incident light. A reflective liquid crystal panel or DMD (Digital Micromirror Device) (trademark of Texas Instruments Inc.) may be employed.
In the above-described embodiment, the projector 1 including the light source device 41 is exemplified. However, for example, the light source device of the present invention may be applied to other optical devices such as a rear projector.

  The present invention can be used for a light source device, and in particular, can be suitably used for a light source device used for a projector.

FIG. 2 is a schematic diagram showing a schematic configuration of a projector. The disassembled perspective view which looked at the light source device from the diagonally forward side. The disassembled perspective view which looked at the light source device from the diagonally back side. The perspective view which looked at the reflector from the front side. The perspective view which looked at the 1st housing from the back side. The figure which shows the state which integrated the 1st housing, the 2nd housing, and the biasing member. The figure which shows the state which made the reflector contact | abut to a 1st housing. The top view which looked at the biasing member from the front side. The perspective view which looked at the state which made the biasing member contact | abut to the light source device main body from the diagonally back side.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Projector, 3 ... Projection lens (projection optical apparatus), 5 ... 1st housing (1st housing | casing), 6 ... 2nd housing (2nd housing | casing), 7 ... Biasing member, 41 ... Light source device, 41A ... light source device main body, 551A ... optical axis direction reference plane, 551B ... X axis direction reference plane (orthogonal direction reference plane), 551C ... Y axis direction reference plane (orthogonal direction reference plane), 61 ... second fixing portion, 71 ... Clamped portion, 72 ... optical axis direction pressing portion, 73 ... orthogonal direction pressing portion, 74 ... extending portion (contact portion), 411 ... light source lamp, 412 ... reflector, 414 ... lamp housing (housing for light source device) 417 ... overhanging portion, 451 ... light modulation device, 541 ... first fixing portion.

Claims (4)

A light source device comprising: a light source lamp; and a light source device main body having a reflector that aligns light emitted from the light source lamp in a constant emission direction; and a light source device housing that houses the light source device main body.
The light source device casing is:
A first housing disposed on the injection direction side;
A second housing disposed on the opposite side to the injection direction;
A biasing member disposed between the first casing and the second casing and biasing the light source device body;
The first housing is
An optical axis direction reference plane that is substantially orthogonal to the optical axis of the light emitted from the reflector, and is a positioning reference in the optical axis direction of the light source device body with respect to the light source device housing by contacting the reflector. ,
A first fixing portion fixed to the second housing,
The second housing is
A second fixing portion that integrates the first housing and the second housing by being fixed to the first fixing portion;
The biasing member is
A sandwiched portion sandwiched between the first fixed portion and the second fixed portion;
A light source device comprising: an optical axis direction pressing portion that presses the reflector toward the optical axis direction reference plane. The light source device according to claim 1,
The first housing is
It is substantially perpendicular to the optical axis direction reference plane, is substantially perpendicular to each other, and abuts on the reflector to be a biaxial positioning reference perpendicular to the optical axis of the light source device main body with respect to the light source device casing. With two orthogonal reference planes,
The biasing member is
A light source device comprising: an orthogonal direction pressing portion that presses the reflector toward each orthogonal direction reference plane. The light source device according to claim 1 or 2,
The reflector is formed with a frame-like projecting portion that projects outwardly away from the optical axis,
The light source device according to claim 1, wherein the urging member includes a contact portion that is formed in a frame shape corresponding to the overhang portion and abuts over substantially the entire circumference of the overhang portion.   The light source device according to any one of claims 1 to 3, a light modulation device that forms light by modulating light emitted from the light source device according to input image information, and the light A projector comprising: a projection optical device that enlarges and projects image light formed by a modulation device.

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