JP2010211152A - Projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector capable of enhancing positional accuracy of light made incident on a color wheel. <P>SOLUTION: A mounting member 30 is mounted on a housing. A lamp 44 is mounted on the housing via the mounting member 30. The color wheel 43 has an incident surface on which light from the lamp 44 is made incident, and transmits the light incident from the incident surface, so as to change color of the transmitted light. An optical modulator modulates the light transmitted through the color wheel 43. The mounting member 30 is configured to move and adjust the light from the lamp 44 in an in-surface direction of the incident surface. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a projector, and more particularly to a projector having a color wheel.

  Projectors having a light modulation device that modulates light from a light source according to image information are widely used.

  For example, Japanese Unexamined Patent Application Publication No. 2007-78733 (Patent Document 1) discloses a projector using a liquid crystal panel as a light modulation device. Further, the technique of this publication has a problem of assembling the lamp unit into the apparatus with high accuracy.

  For example, according to Japanese Patent Application Laid-Open No. 2008-225407 (Patent Document 2), a DLP (Digital Light Processing) (trademark) type projector is disclosed. A DLP projector has a DMD (Digital Micromirror Device) (trademark) as a light modulation device. DMD modulates a light beam emitted from a light source device according to image information by controlling an incident angle of a movable micromirror. The projector disclosed in this publication has a color wheel. The color wheel converts a light beam emitted from the light source device by rotating into a light beam in a different wavelength region in a time division manner and emits it.

Japanese Patent Laid-Open No. 2007-078733 JP 2008-225407 A

  In a projector using a color wheel, light from the lamp needs to be incident on a predetermined position on the incident surface of the color wheel with high accuracy, and the position of the lamp is higher than that of a projector using a liquid crystal panel. It needs to be managed with high accuracy. However, the technique disclosed in Japanese Patent Application Laid-Open No. 2007-078733 has a problem that the positional accuracy may be insufficient.

  The present invention has been made in view of the above problems, and an object thereof is to provide a projector capable of improving the positional accuracy of light incident on a color wheel.

  The projector of the present invention includes a housing, a mounting member, a lamp, a color wheel, and a light modulation device. The attachment member is attached to the housing. The lamp is attached to the housing via an attachment member. The color wheel has an incident surface on which light from the lamp is incident, and changes the color of the transmitted light by transmitting the light incident from the incident surface. The light modulation device modulates light transmitted through the color wheel. The mounting member is configured so that light from the lamp can be moved and adjusted in the in-plane direction of the incident surface.

  According to the projector of the present invention, the position of the lamp can be adjusted by moving the position of the lamp with respect to the casing in the in-plane direction of the incident surface. Thereby, the positional accuracy of the lamp can be increased.

  In the projector described above, the attachment member preferably includes first to third portions. The second portion is fixed to the first portion so that the relative position with the first portion can be adjusted in the first direction parallel to the incident surface. The third portion is fixed to the first portion so that the relative position with the first portion can be adjusted in a second direction parallel to the incident surface and intersecting the first direction. Each of the second and third portions is fixed to the housing and the lamp.

  Thereby, the lamp is adjusted in the first and second directions parallel to the incident surface by adjusting the relative position between the first part and the second part and adjusting the third part and the first part, respectively. Can be adjusted.

  In the above projector, preferably, the first portion has first and second openings. The first opening portion is connected to the first slit portion extending in the direction intersecting the first direction and the first slit portion, and the dimension in the first direction is larger than that of the first slit portion. A first wide portion. The second opening portion is connected to the second slit portion extending in the direction intersecting the second direction and the second slit portion, and the dimension in the second direction is larger than that of the second slit portion. A second wide portion. The second part has a third opening. The third opening portion is connected to the third slit portion extending in the direction intersecting the first direction and the third slit portion, and the dimension in the first direction is larger than that of the third slit portion. And a third wide portion. The third portion has a fourth opening. The fourth opening portion is connected to the fourth slit portion extending in the direction intersecting the second direction and the fourth slit portion, and the dimension in the second direction is larger than that of the fourth slit portion. And a fourth wide portion. The first and second portions are arranged such that the first slit portion and the first wide portion overlap the third wide portion and the third slit portion, respectively. The first and third portions are arranged so that the second slit portion and the second wide portion overlap the fourth wide portion and the fourth slit portion, respectively.

  Thereby, the relative position of the 1st and 2nd part can be adjusted in the 1st direction by rotating the tool inserted so that it may straddle both the 1st and 3rd slit parts. Therefore, the position of the lamp can be adjusted in the first direction. Moreover, the relative position of the first and third portions can be adjusted in the second direction by rotating the tool inserted so as to straddle both the second and fourth slit portions. Therefore, the position of the lamp can be adjusted in the second direction.

  As described above, according to the present invention, the irradiation position of the lamp on the incident surface of the color wheel can be adjusted. Thereby, the positional accuracy of the light incident on the color wheel can be improved.

1 is a perspective view schematically showing a configuration of a projector in an embodiment of the invention. It is a figure which shows schematically the optical system of the projector in one embodiment of this invention. It is a perspective view which shows roughly the structure in the lamp house unit of the projector in one embodiment of this invention. It is a figure which shows schematically the optical system in the lamp house unit of the projector in one embodiment of this invention. It is a block diagram which shows the connection relation between the components of the projector in one embodiment of this invention. It is a perspective view which shows roughly the structure of the attachment member of the projector in one embodiment of this invention. FIG. 7 is a schematic exploded perspective view of FIG. 6. It is a top view which shows roughly the shape of the 1st-4th opening part of the attachment member of the projector in one embodiment of this invention. It is a fragmentary top view which shows roughly the 1st process of the method of adjusting the position of the lamp | ramp of the projector in 1st direction in one embodiment of this invention. It is a fragmentary top view which shows roughly the 2nd process of the method of adjusting the position of the lamp | ramp of the projector in 1st direction in one embodiment of this invention. 1 is a perspective view schematically showing a configuration of a lamp house unit of a projector according to an embodiment of the present invention from a color wheel side. It is a perspective view which shows roughly the structure of the lamp house unit of the projector in one embodiment of this invention from the opposite side to the color wheel side. FIG. 13 is a schematic cross-sectional perspective view taken along line AA in FIG. 12. FIG. 13 is a schematic cross-sectional view taken along line AA in FIG. 12. It is a perspective view which shows roughly the structure of the lamp holder unit which the lamp house unit of the projector in one embodiment of this invention has from the front side. It is a perspective view which shows roughly the structure of the lamp holder unit which the lamp house unit of the projector in one embodiment of this invention has from the back side. FIG. 16 is a perspective view schematically showing a state in which the second holder of FIG. 15 is removed. FIG. 17 is a perspective view schematically showing a state in which the second holder of FIG. 16 is removed. FIG. 16 is a perspective view schematically showing an assembly of a lamp and a first holder included in the lamp holder unit of FIG. 15. FIG. 17 is a perspective view schematically showing an assembly of a lamp and a first holder included in the lamp holder unit of FIG. 16.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that arrows X, Y, and Z in each figure indicate a three-dimensional orthogonal coordinate system XYZ.

First, an outline of the configuration of the projector according to the present embodiment will be described.
Referring mainly to FIGS. 1 and 2, projector 100 according to the present embodiment includes housing 41, projection lens 73, DMD chip 42 (light modulation device), reflection mirror 72, condenser lens 71, and the like. And a lamp house unit 51U.

  The lamp house unit 51U is a unit that emits light LS having different wavelength regions in a time-division format, and is attached to the housing 41.

  The condenser lens 71 and the reflection mirror 72 are configured to collect the light LS on the DMD chip 42.

  The DMD chip 42 is housed in the housing 41, and is configured to be able to emit light to the projection lens 73 after modulating light by controlling the angle of the movable micromirror 42m. That is, the DMD chip 42 is a light modulation device that modulates the intensity of light according to image information.

  The projection lens 73 is configured to emit modulated light incident from the DMD chip 42 as projection light LP.

  Referring to FIGS. 2 to 5, lamp house unit 51 </ b> U mainly includes lamp house 51, lamp holder unit 44 </ b> U, color wheel 43, rod integrator lens 75, and light tunnel 76. Each of the lamp holder unit 44 </ b> U, the color wheel 43, the rod integrator lens 75, and the light tunnel 76 is attached to the lamp house 51.

  The lamp holder unit 44U (FIG. 5) includes the lamp 44, the adjustment fitting 30 (attachment member), and first and second holders 61 and 62. The adjustment fitting 30 fixes the lamp 44 to the casing 41 by connecting between the casing 41 and the lamp 44. Further, the adjustment fitting 30 is configured to be able to move the position of the lamp 44 with respect to the housing 41 in the in-plane direction of the incident surface IP. The detailed configuration of the adjustment fitting 30 will be described later.

  The color wheel 43 has an incident surface IP on which light from the lamp 44 is incident. Further, the color wheel 43 can rotate around an axis perpendicular to the incident surface IP, as indicated by a rotation arrow in FIG. 3, and the color of the light LI incident on the incident surface IP (FIG. 4) by this rotation. The light can be emitted after being changed. The color wheel 43 is attached to the housing 41 so that the emitted light can be supplied to the DMD chip 42.

  The light emitted from the color wheel 43 is emitted as light LS (FIG. 4) through the rod integrator lens 75 and the light tunnel 76.

  The lamp house unit 51U may include a lamp cooling fan 81 and an optical component cooling fan 82, as shown in FIGS. Further, the lamp holder unit 44U may include a UV (Ultraviolet) glass 74, a glass fixing metal fitting 83, and a lamp scattering prevention metal fitting 84, as shown in FIGS.

Next, an outline of the configuration of the adjustment fitting 30 will be described.
Referring mainly to FIGS. 6 and 7, adjustment fitting 30 has first to third fittings 31 to 33 (first to third portions).

  The first metal fitting 31 has a plate-like portion parallel to the ZX plane of the coordinate system XYZ and a plate-like portion parallel to the XY plane. A screw hole RX and a protrusion BX in the Y direction are formed in the plate-like portion parallel to the ZX plane. Further, a screw hole RY and a protrusion BY in the opposite direction to the Z direction are formed in the plate-like portion parallel to the XY plane.

  The second metal fitting 32 has a plate-like portion parallel to the ZX plane of the coordinate system XYZ. An elongated hole SX and a guide hole GX are formed in the plate-like portion. Each of the long hole SX and the guide hole GX extends in the X direction.

  The third metal fitting 33 has a plate-like portion parallel to the XY plane of the coordinate system XYZ. An elongated hole SY and a guide hole GY are formed in the plate-like portion. Each of the long hole SY and the guide hole GY extends in the Y direction.

  The second metal fitting 32 is fixed to the first metal fitting 31 by tightening the screw 39X passed through the elongated hole SX of the second metal fitting 32 into the screw hole RX of the first metal fitting 31. . The third metal fitting 33 is fixed to the first metal fitting 31 by screwing the screw 39Y passed through the elongated hole SY of the third metal fitting 33 into the screw hole RY of the first metal fitting 31. Therefore, the second metal fitting 32 and the third metal fitting 33 are connected to each other via the first metal fitting 31.

  The second metal fitting 32 is fixed to the housing 41 via the second holder 62 (FIG. 5) and the lamp house 51 (FIG. 5). Further, the third metal fitting 33 is fixed to the lamp 44 via the first holder 61. Therefore, the lamp 44 is fixed to the housing 41 via the first holder 61, the adjustment fitting 30, the second holder 62, and the lamp house 51. That is, the lamp 44 is fixed to the housing 41.

  Further, since the elongated hole SX of the second metal fitting 32 extends in the X direction, when the screw 39X is loosened, in the X direction (first direction) that is parallel to the incident surface IP of the color wheel 43, The relative positions of the first metal fitting 31 and the second metal fitting 32 can be adjusted. With this configuration, the position of the lamp 44 can be adjusted in the X direction with respect to the housing 41.

  In order to stably adjust the relative position in the X direction, the protrusion BX is fitted in the guide hole GX extending in the X direction.

  Further, since the elongated hole SY of the third metal fitting 33 extends in the Y direction, when the screw 39Y is loosened, it is parallel to the incident surface IP of the color wheel 43 and crosses the X direction (the first direction). 2), the relative positions of the first metal fitting 31 and the third metal fitting 33 can be adjusted. With this configuration, the position of the lamp 44 can be adjusted in the Y direction with respect to the housing 41.

  In order to stably adjust the relative position in the Y direction, the protrusion BY is fitted in the guide hole GY extending in the Y direction.

Next, details of the configuration of the adjustment fitting 30 will be described.
Referring mainly to FIG. 7 and FIG. 8, the first metal fitting 31 has first and second openings OP1 and OP2 and first and second through holes P1 and P2. The first opening portion OP1 is connected to the slit portion SL (first slit portion) extending in the Z direction, which is a direction intersecting the X direction, and the slit portion SL has a dimension WW in the X direction. And a wide portion WD (first wide portion) larger than the dimension WS of the portion SL. The second opening OP2 is connected to the slit portion SL (second slit portion) extending in the X direction, which is a direction intersecting the Y direction, and the dimension WW in the Y direction is connected to the slit portion SL. A wide portion WD (second wide portion) larger than the dimension WS of the portion SL is included.

  The second metal fitting 32 has a third opening OP3, a third through hole P3, and a screw hole H1. The third opening OP3 is connected to the slit portion SL (third slit portion) extending in the Z direction, which is a direction intersecting the X direction, and the slit portion SL has a dimension WW in the X direction. And a wide portion WD (third wide portion) larger than the dimension WS of the portion SL. The screw hole H1 is for connecting the second metal fitting 32 and the second holder 62 (FIG. 5) with screws.

  The third metal fitting 33 has a fourth opening OP4, a fourth through hole P4, and a screw hole H2. The fourth opening OP4 is connected to the slit portion SL (fourth slit portion) extending in the X direction, which is a direction intersecting the Y direction, and the slit portion has a dimension WW in the Y direction. A wide portion WD (fourth wide portion) larger than the dimension WS of the SL is provided. The screw hole H2 is for connecting the third metal fitting 33 and the first holder 61 (FIG. 5) with screws.

  The first and second metal fittings 31 and 32 are arranged such that the slit portion SL and the wide portion WD of the first opening OP1 overlap with the wide portion WD and the slit portion SL of the third opening OP3, respectively. Yes. The first and third through holes P1 and P3 are formed so as to overlap each other when the slit portions SL of the first and third openings OP1 and OP3 are arranged in a substantially straight line. .

  The first and third metal members 31 and 33 are arranged such that the slit portion SL and the wide portion WD of the second opening OP2 overlap with the wide portion WD and the slit portion SL of the fourth opening OP4, respectively. ing. The second and fourth through holes P2 and P4 are formed so as to overlap each other when the slit portions SL of the second and fourth openings OP2 and OP4 are arranged substantially in a straight line. .

Next, the usage method of the adjustment metal fitting 30 is demonstrated.
Referring to FIG. 9, first, the relative positions of the first and second metal fittings 31 and 32 are adjusted so that the first and third through holes P1 and P3 overlap each other. This adjustment can be performed, for example, by inserting a pin so as to pass through both the first and third through holes P1 and P3.

  Next, the tool 90 is inserted so as to straddle both the slit portions SL of the first and third openings OP1 and OP3. The tool 90 is, for example, a minus driver. Next, the tool 90 is rotated as shown by the rotation arrow (FIG. 9). Thereby, each of the 1st and 2nd metal fittings 31 and 32 is displaced as shown to the arrow T1 and T2 (FIG. 9) which are mutually opposite in a X direction (lateral direction of FIG. 9).

  With reference to FIG. 10, the relative position in the X direction of the 1st and 2nd metal fittings 31 and 32 is adjusted by rotating the tool 90 as mentioned above. As a result, the relative position in the X direction between the first and second holders 61 and 62 is adjusted. Thereby, the position of the lamp 44 in the X direction with respect to the housing 41 is adjusted.

  Moreover, the relative position of the 1st and 3rd metal fittings 31 and 33 is adjusted in the Y direction by the same method. As a result, the relative position in the Y direction between the first and second holders 61 and 62 is adjusted. Thereby, the position of the lamp 44 in the Y direction with respect to the housing 41 is adjusted.

  As described above, the position of the lamp 44 with respect to the housing 41 can be adjusted in each of the X direction and the Y direction by using the adjustment fitting 30. That is, the lamp position accuracy can be increased. Thereby, the incident position of the light LI on the incident surface IP of the color wheel 43 can be adjusted in each of the X direction and the Y direction in the incident surface IP.

  Each embodiment disclosed this time must be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention can be applied particularly advantageously to a projector having a color wheel.

  30 Adjustment metal fittings (mounting members), 31 to 33 First to third metal fittings (first to third parts), 39X, 39Y screw, 41 housing, 42 DMD chip (light modulation device), 42m movable micromirror 43 color wheel, 44 lamp, 44U lamp holder unit, 51 lamp house, 51U lamp house unit, 61 first holder, 62 second holder, 71 condenser lens, 72 reflecting mirror, 73 projection lens, 74 UV glass, 75 rod Integrator lens, 76 light tunnel, 81 lamp cooling fan, 82 optical component cooling fan, 83 glass fixing bracket, 84 lamp scattering prevention bracket, 90 tools, 100 projector, BX, BY protrusion, GX, GY guide hole, H1, H2, RX, RY Screw hole, IP incident surface, LI , LS light, OP1 to OP4, first to fourth openings, first to fourth through holes P1 to P4, SL slit portion, SX, SY long hole, WD wide portion.

Claims (3)

A housing,
An attachment member attached to the housing;
A lamp attached to the housing via the attachment member;
A color wheel having an incident surface on which light from the lamp is incident, and changing the color of the transmitted light by transmitting the light incident from the incident surface;
A light modulation device for modulating the light transmitted through the color wheel,
The projector is configured so that light from the lamp can be moved and adjusted in an in-plane direction of the incident surface. The mounting member is fixed to the first portion so that a relative position between the first portion and the first portion in a first direction parallel to the incident surface can be adjusted. A first portion fixed to the first portion so that a relative position between the first portion and the portion can be adjusted in a second direction parallel to the incident surface and intersecting the first direction; 3 parts,
The projector according to claim 1, wherein each of the second and third portions is fixed to the housing and the lamp. The first portion has first and second openings, and the first opening extends in a direction intersecting the first direction, and the first slit A first wide portion connected to the slit portion and having a dimension in the first direction larger than that of the first slit portion, and the second opening portion intersects the second direction. A second slit portion extending to the second slit portion, and a second wide portion connected to the second slit portion and having a dimension in the second direction larger than that of the second slit portion,
The second portion has a third opening, and the third opening is formed in a third slit extending in a direction intersecting the first direction, and in the third slit A third wide portion connected and having a dimension in the first direction larger than that of the third slit portion;
The third portion has a fourth opening, and the fourth opening is formed in a fourth slit that extends in a direction intersecting the second direction, and in the fourth slit. A fourth wide portion that is connected and has a dimension in the second direction larger than that of the fourth slit portion;
The first and second portions are arranged such that each of the first slit portion and the first wide portion overlaps the third wide portion and the third slit portion,
The said 1st and 3rd part is arrange | positioned so that each of the said 2nd slit part and the said 2nd wide part may overlap with the said 4th wide part and the said 4th slit part. The projector according to 1 or 2.

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