WO2005038521A1 - 光学部品用筐体、光学装置、およびプロジェクタ - Google Patents
光学部品用筐体、光学装置、およびプロジェクタ Download PDFInfo
- Publication number
- WO2005038521A1 WO2005038521A1 PCT/JP2004/014842 JP2004014842W WO2005038521A1 WO 2005038521 A1 WO2005038521 A1 WO 2005038521A1 JP 2004014842 W JP2004014842 W JP 2004014842W WO 2005038521 A1 WO2005038521 A1 WO 2005038521A1
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- WIPO (PCT)
- Prior art keywords
- holding frame
- optical
- optical component
- polarizing plate
- housing
- Prior art date
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/145—Housing details, e.g. position adjustments thereof
Definitions
- the present invention relates to an optical component housing, an optical device, and a projector.
- a light modulation element that modulates a light beam emitted from a light source, and an incident-side polarization plate and an emission-side polarization plate that are arranged so as to sandwich the light modulation element are used.
- the incident-side polarizing plate and the exit-side polarizing plate control the polarization direction of light incident on the light modulation element, and also control the polarization direction of the light flux emitted from the light modulation element. They are arranged orthogonally. With such a configuration, it is possible to achieve high contrast and high contrast of the projected image.
- a projector provided with an adjustment mechanism for adjusting the angle formed between the polarization axes of the entrance-side polarization plate and the exit-side polarization plate (for example, see Patent Document 1).
- the adjustment mechanism is provided independently of the optical component housing that houses the optical components, and is installed at a predetermined position on the optical component housing. By operating the adjustment mechanism through a hole formed on the upper surface of the optical component casing, the position of the incident-side polarizing plate with respect to the emitting-side polarizing plate is adjusted in a plane orthogonal to the illumination optical axis. .
- Patent Document 1 JP-A-2000-259093
- an optical unit has been developed to adjust the viewing angle of each light modulation element, suppress screen unevenness due to the viewing angle dependency generated for each light modulation element, and form a projection image without color unevenness.
- a configuration using a phase difference plate, a viewing angle correction plate, or the like as a product is also used.
- Such a retardation plate or a viewing angle correction plate or the like is arranged on the illumination optical axis, for example, between the incident-side polarizing plate or the outgoing-side polarizing plate and the light modulation element.
- each adjustment mechanism in order to attach each adjustment mechanism to the optical component casing, a plurality of mounting portions corresponding to each adjustment mechanism are formed in the optical component casing, or each adjustment mechanism is fixed to the optical component casing.
- a plurality of fixing members such as screws are required. Therefore, it is difficult to reduce the manufacturing cost of the projector due to the necessity of forming a plurality of mounting portions and a plurality of fixing members.
- the optical component housing of the present invention has an illumination optical axis of a light beam emitted from a light source, and a plurality of optical components housed therein and arranged at a predetermined position on the illumination optical axis.
- an optical component holding frame supporting surface that rotatably supports the optical component holding frame is formed, wherein the optical component holding frame holds a first optical component that holds any one of the plurality of optical components.
- the holding frame and the optical component held by the first holding frame are arranged in proximity to each other.
- a second holding frame for holding the mechanical components wherein one of the first holding frame and the second holding frame slides on the optical component holding frame support surface of the upper housing.
- optical components for example, a polarizing plate, a retardation plate, optical compensation means (viewing angle correction plate, color correction film, etc.) can be adopted.
- the optical component housing is an optical component holding frame including a lower housing, an upper housing having an optical component holding frame support surface formed on an upper surface, and a first holding frame and a second holding frame. And Further, one of the first holding frame and the second holding frame is configured to slide on the optical component holding frame supporting surface of the upper housing, and the other holding frame is It has a rotation guide surface that is rotatably supported.
- the first holding frame and the second holding frame that constitute the optical component holding frame are integrally formed via the rotation guide surface formed on one of the holding frames, and are arranged close to each other among the plurality of optical components. Can hold two optical components. Therefore, compared to the conventional configuration in which two adjusting mechanisms independently hold two optical components, a relatively large space is not required inside the optical component casing, and the optical component casing is not required. The size can be reduced.
- the other holding frame is fixed to one holding frame, for example, only the mounting portion for one holding frame may be formed in the upper housing or the lower housing. It is not necessary to form the mounting portion for the holding frame on the upper housing or the lower housing.
- a fixing member for fixing the optical component holding frame to the upper housing or the lower housing is also provided for the one holding frame. It is possible to omit the other fixing member for the holding frame, which is provided only by the fixing member for the holding frame. Therefore, the mounting portion and the fixing member can be omitted as appropriate, and the manufacturing cost of the projector can be reduced.
- the one holding frame is in contact with the optical component holding frame support surface of the upper housing, and the optical component is held around the light incident direction of the held optical component as an axis.
- a first curved surface for rotating the component is formed, and the rotation guide surface is formed on an end surface facing the first curved surface.
- the first curved surface is formed on one of the holding frames corresponding to the optical component holding frame support surface of the upper housing.
- Branch The optical component can be rotated along the holding surface, and the position of the optical component held by one of the holding frames can be easily and accurately adjusted with a simple structure.
- the rotation guide surface is formed on the end surface facing the first curved surface, for example, if a part of one holding frame is formed to have a shape that is curved around the illumination optical axis of the light beam, a curved shape is obtained.
- the inner end surface can be the first curved surface and the curved outer end surface can be the rotation guide surface, so that one of the holding frames can be easily manufactured.
- an optical component holding frame support surface is formed on the upper surface of the upper housing, and a rotation guide surface is formed on one of the holding frames at an end surface facing the first curved surface that abuts the optical component holding frame support surface. Therefore, one of the holding frames can be easily installed on the upper housing from above the upper housing, and the other of the holding frames can be moved from the upper force of the one holding frame to the other.
- the holding frame can be easily installed. Therefore, the optical component holding frame can be easily attached to and detached from the upper housing, and the optical component held by the optical component holding frame can be easily replaced.
- the other holding frame is in contact with a rotation guide surface of the one holding frame, and the optical component is held around the light incident direction of the held optical component as an axis.
- a second curved surface to be rotated is formed.
- the other holding frame is formed with the second curved surface corresponding to the rotation guiding surface of the one holding frame, the other holding frame is formed along the rotation guiding surface of the one holding frame.
- the position of the optical component held by the other holding frame can be adjusted easily and with high accuracy by a simple structure.
- the first holding frame and the second holding frame each have an elongated hole that extends along a rotation direction and at least partially interferes with each other in a plane.
- a fixing member attached to the optical component holding frame support surface of the upper housing, the fixing member being inserted through each of the long holes and fixing both the first holding frame and the second holding frame. It is preferred that a be formed.
- the first holding frame and the second holding frame each have a long hole, and at least a part of each long hole interferes with each other in a plane.
- a fixing member attached to the optical component holding frame support surface of the upper housing is attached to a fixing member inserted through each elongated hole. A part is formed.
- the fixing member is attached to the fixing member attaching portion by a screwing structure.
- the fixing member is attached to the fixing member attaching portion by the screwing structure, for example, at least any one of the optical components held by the optical component holding frame has an illumination optical axis.
- the position of the optical component can be easily corrected by loosening the screwing state of the fixing member.
- the optical components can be replaced simply by loosening and removing the fixing member, and each holding frame can be easily attached and detached. Therefore, as compared with a configuration in which each holding frame is bonded and fixed with an adhesive or the like, the attachment and detachment of each holding frame with respect to the upper housing can be performed easily and quickly.
- each holding frame is formed with a long hole, when adjusting the position of each optical component, the screwing state of the fixing member can be loosened, making it easy to adjust the position of each optical component. As well as easy and reliable fixing after position adjustment
- the top of the upper casing supports the tip of a rod-shaped adjusting member for adjusting the position of the optical component, and supports a fulcrum when the adjusting member moves. It is preferable that an adjustment member tip support portion is formed, and the one holding frame is formed with a notch through which the adjustment member is inserted and which comes into contact with a side surface of the adjustment member.
- a rod-shaped tool such as a tool, can be used as the adjusting member.
- the adjustment member distal end support portion is formed in the upper housing, and the notch is formed in one of the holding frames.
- the adjustment member By inserting the adjustment member through the notch and supporting the tip of the adjustment member on the adjustment member tip support, and moving the adjustment member around the adjustment member tip support, the side of the adjustment member and the side of the notch come into contact.
- One holding frame can be moved in the moving direction of the adjustment member, The frame can be slid on the optical component holding frame support surface. That is, it is possible to easily adjust the position of the optical component held by the one holding frame by rotating the one holding frame. Further, the position of the optical component can be easily adjusted without using a dedicated optical axis adjustment jig to move one of the holding frames.
- the other holding frame projects upward and slides the other holding frame on the rotation guide surface of the one holding frame. It is preferable that a moving operation unit is formed.
- the other holding frame is provided with the moving operation unit, for example, by grasping the moving operation unit by hand and moving the moving operation unit, the other holding frame is rotated inside the rotation plan. Can be slid on. That is, by rotating the other holding frame, the position of the optical component held by the other holding frame can be easily adjusted. Therefore, it is possible to easily adjust the position of the optical component without using a dedicated optical axis adjusting jig to move the other holding frame.
- the optical device of the present invention includes a plurality of optical components arranged on an optical path of a light beam emitted from a light source, and the above-described optical component housing for housing the plurality of optical components therein. It is characterized by having.
- the optical device since the optical device includes the above-described optical component casing, the same operation and effect as those of the above-described optical component casing can be enjoyed.
- the optical device is provided with the optical component housing capable of adjusting the position of the optical component, it is possible to avoid mutual displacement of each optical component and form a good optical image.
- the plurality of optical components include a light modulator that modulates the emitted light beam according to image information, a polarizing plate that converts a polarization axis of the incident light beam, It is preferable that the optical component holding frame holds the polarizing plate and the optical compensating unit.
- the optical compensating unit extends the viewing angle of the light beam emitted from the light modulation device.
- both the input-side polarizing plate and the output-side polarizing plate which are arranged before and after the optical path of the light modulator can be adopted.
- the optical compensating means is provided between the incident side polarizing plate or the emitting side polarizing plate and the light modulator.
- a viewing angle correction plate or the like interposed in the camera can be adopted.
- the optical component holding frame may be configured to hold two optical components arranged in close proximity.
- the first holding frame holds the incident-side polarizing plate
- the second holding frame holds the viewing angle.
- the first holding frame may hold the emission side polarizing plate
- the second holding frame may hold the viewing angle correction plate.
- a configuration in which the incident side polarizing plate is held by the first holding frame and the viewing angle correction plate is held by the second holding frame is preferable.
- the optical component holding frame holds the polarizing plate and the optical compensation means, for example, the first holding frame holds the incident side polarizing plate, and the second holding frame holds the viewing angle correction plate.
- the angle of the polarization axis of the incident-side polarizing plate with respect to the emission-side polarizing plate can be adjusted, and the second holding frame can be adjusted.
- the viewing angle of the viewing angle correction plate can be adjusted. Therefore, according to the optical device of the present invention, an optical image having a high contrast and a good viewing angle can be formed.
- a projector includes a light source, a light modulation device that modulates the emitted light beam according to image information to form an optical image, and an optical image formed by the light modulation device.
- a projector comprising a projection optical device for projecting, comprising the optical device described above.
- the projector since the projector includes the above-described optical device, the same operation and effect as those of the above-described optical device can be obtained.
- a polarizing plate and a field of view corresponding to each light modulation device are provided. If the angle correction plate is configured to adjust the position of each of the three optical component holding frames, a high contrast ratio can be achieved, and screen unevenness due to viewing angle dependence that occurs in each light modulator can be suppressed, and color unevenness can be reduced. ⁇ ! Projection images can be formed.
- FIG. 1 is a diagram showing a schematic configuration of a projector according to an embodiment.
- FIG. 2 is a perspective view of the optical unit in the embodiment as viewed from above.
- FIG. 3 is a diagram schematically showing an optical system of an optical unit in the embodiment.
- FIG. 4 is a view for explaining a position adjusting mechanism in the embodiment.
- FIG. 5 is a view for explaining a position adjusting mechanism in the embodiment.
- FIG. 6 is a view for explaining a position adjusting mechanism in the embodiment.
- FIG. 7 is a perspective view of the polarizing plate holding frame in the embodiment as viewed from above.
- FIG. 8 is a perspective view of the correction plate holding frame in the embodiment as viewed from above.
- FIG. 9 is a diagram showing a state in which the position adjustment of the incident-side polarizing plate and the viewing angle correction plate in the embodiment is performed.
- Adjusting member tip support DR- • Driver (adjusting member).
- FIG. 1 is a diagram showing a schematic configuration of a projector 1 according to the present embodiment.
- the projector 1 includes an outer case 2 having a substantially rectangular parallelepiped shape, a cooling unit 3 for cooling heat staying in the projector 1, and an optical image corresponding to image information by optically processing the emitted light flux.
- An optical unit 4 serving as an optical device for forming the image forming apparatus, and a power supply unit 5 for supplying power supplied externally through a power cable (not shown) to the components of the projector 1 are provided.
- the outer case 2 is made of metal, and includes an upper case 21 that forms the top, front, side, and back of the projector 1, and a bottom, front, and side of the projector 1. And a lower case 22 each of which forms a surface and a rear surface. These cases 21, 22 are fixed to each other by screws.
- the outer case 2 is not limited to a metal case, and may be a case formed of a synthetic resin.
- a cutout 211 is formed on the front surface of the upper case 21, and forms a circular opening 2 A in a state where the cutout 211 is combined with the lower case 22.
- a part of a later-described projection lens of the optical unit 4 disposed inside the source 2 is exposed to the outside.
- the focus operation of the projection lens can be manually performed through a lever of the projection lens which is a part of the exposed portion.
- an exhaust port 212 for discharging air heated inside the projector 1 to the outside by the cooling unit 3 is formed at a position opposite to the opening 2A.
- an intake port 213 is formed at a position facing the power supply unit 5 (the left side in FIG. 1) for the cooling unit 3 to suck the cooling air with an external force. Also, on the back of the upper case 21, there are provided a connection part for connecting a computer (not shown) and various equipment connection terminals such as a video input terminal and an audio equipment connection terminal. An interface board on which a signal processing circuit for performing signal processing of a video signal or the like is mounted is arranged.
- an intake port for sucking cooling air by an external force is formed by the cooling unit 3 on the bottom surface of the lower case 22. Have been.
- a cooling unit 3 is formed with an air inlet for sucking cooling air as well as an external force, which is continuous with an air inlet 213 formed on the back of the upper case 21. I have.
- a cutout portion 221 is formed on the front surface of the lower case 22, and when combined with the upper case 21, a circular opening 2 ⁇ / b> A is formed continuously with the cutout portion 211 described above.
- the cooling unit 3 is used to discharge the air heated inside the projector 1 to the outside by the cooling unit 3 continuously with the exhaust port 212 formed on the front surface of the upper case 21.
- An exhaust port 222 is formed.
- the cooling unit 3 sends cooling air into a cooling channel formed inside the projector 1. Only to cool the heat generated in projector 1.
- the cooling unit 3 is located on a side of a later-described projection lens of the optical unit 4, and a pair of sirocco fans 31, 32 for sucking cooling air from an intake port (not shown) formed on the bottom surface of the lower case 22;
- An axial flow intake fan 33 is located near the rear surface of the outer case 2 and sucks cooling air from an intake port 213 formed on the rear surface, and draws air inside the projector 1 near the front surface of the outer case 2.
- an axial exhaust fan 34 for exhausting warm air from exhaust ports 212 and 222 formed on the front surface.
- the power supply unit 5 is disposed inside the projector 1 so as to extend from the back to the front of the outer case 2. Although not shown, the power supply unit 5 supplies power supplied from the outside through a power cable to a power supply for supplying components to the projector 1 and a light source device of the optical unit 4 to be described later. And a lamp driving circuit for supplying power.
- the power supply and the lamp drive circuit are covered with a metal shielding member, such as aluminum, having both ends opened. The shield member guides the cooling air sucked from the axial-flow intake fan 33 of the cooling unit 3 and prevents the electromagnetic noise generated in the power supply and the lamp drive circuit from leaking to the outside. Being done.
- FIG. 2 is a perspective view of the optical unit 4 as viewed from above.
- the optical unit 4 is a unit that optically processes a light beam emitted also from a light source, which will be described in detail later, to form an optical image corresponding to image information, and enlarges and projects this optical image.
- This optical unit extends from the front side to the rear side, further extends along the rear side, and further from the rear side to the front side in the outer case 2 as shown in FIG. 1 or FIG. It has a substantially U-shaped extending plane.
- the optical unit 4 is electrically connected to a power supply unit 5 not shown. Above the optical unit 4, in order to project an optical image according to the image information, the image information is taken in, control and arithmetic processing are performed, and each liquid crystal to be an optical modulator described later is provided.
- a control board for controlling the panel is arranged.
- FIG. 3 is a diagram schematically showing the optical system of the optical unit 4.
- the optical unit 4 includes an integrator illumination optical system 41, a color separation optical system 42, a relay optical system 43, an electro-optical device 44, a projection lens 46 as a projection optical device, and these optical components 41 to 44. And a synthetic resin optical component housing 47 (Fig. 2) for supporting and fixing the projection lens 46 at a predetermined position.
- the integrator illumination optical system 41 is an optical system for illuminating an image forming area of each liquid crystal panel, which will be described later, constituting the electro-optical device 44 substantially uniformly.
- the integrator illumination optical system 41 includes a light source device 413, a first lens array 418, a second lens array 414, a polarization conversion device 415, a reflection mirror 424, and a superimposing lens 419.
- the light source device 413 has a light source lamp 411 as a radiation light source that emits a radial light beam, and a reflector 412 that reflects the radiation light emitted from the light source lamp 411.
- a light source lamp 411 As the light source lamp 411, a halogen lamp, a metal halide lamp, or a high-pressure mercury lamp is often used.
- a parabolic mirror is used as the reflector 412.
- an ellipsoidal mirror may be used together with the parallelizing concave lens.
- the first lens array 418 has a configuration in which small lenses having a substantially rectangular outline when viewed from the optical axis direction are arranged in a matrix. Each small lens divides a light beam emitted from the light source lamp 411 into a plurality of partial light beams.
- the second lens array 414 has substantially the same configuration as the first lens array 418, and has a configuration in which small lenses are arranged in a matrix.
- the second lens array 414 has a function of forming an image of each small lens of the first lens array 418 on a liquid crystal panel to be described later, together with the superimposing lens 419.
- the polarization conversion device 415 is disposed downstream of the second lens array 414. Such a polarization conversion device 415 converts the light from the second lens array 414 into approximately one type of polarized light, thereby increasing the light use efficiency of the electro-optical device 44. .
- each of the partial lights converted into approximately one type of polarized light by the polarization conversion device 415 is finally superimposed on each liquid crystal panel of the electro-optical device 44, which will be described later, by the superimposing lens 419.
- the projector 1 of the present embodiment using a liquid crystal panel of a type that converts polarized light, one type of polarized light cannot be used, so that other types of random polarized light can be used.
- Approximately half of the light emitted from the light source lamp 411 is not used. For this reason, by using the polarization conversion device 415, almost all of the light flux emitted from the light source lamp 411 is converted into one type of polarized light, and the light use efficiency of the electro-optical device 44 is increased.
- the color separation optical system 42 includes two dichroic mirrors 421 and 422 and a reflection mirror 423.
- the dichroic mirrors 421 and 422 divide the plurality of partial light beams emitted from the integrator illumination optical system 41. It has the function of separating into three color lights of red, green and blue.
- the relay optical system 43 includes an incident side lens 431, a relay lens 433, and reflection mirrors 432 and 434, and has a function of guiding the color light separated by the color separation optical system 42 to a liquid crystal panel for blue light. .
- the dichroic mirror 421 of the color separation optical system 42 transmits the blue light component and the green light component of the light beam emitted from the integrator illumination optical system 41 and reflects the red light component.
- the red light reflected by the dichroic mirror 421 is reflected by the reflection mirror 423 and passes through the field lens 417 to reach the liquid crystal panel for red light.
- This field lens 417 converts each partial light beam emitted from the second lens array 414 into a light beam parallel to its central axis (principal ray). The same applies to the field lens 417 provided on the light incident side of the other liquid crystal panels for green light and blue light.
- the green light is reflected by the dichroic mirror 422 and reaches the liquid crystal panel for green light through the field lens 417.
- the blue light passes through the dichroic mirror 422, passes through the relay optical system 43, and further passes through the field lens 417 to reach the liquid crystal panel for blue light.
- the reason why the relay optical system 43 is used for blue light is that the optical path length of blue light is longer than the optical path length of other color lights, so that the reduction in light use efficiency due to light diffusion or the like is reduced. This is to prevent it. In other words, this is because the partial light beam incident on the incident side lens 431 is transmitted to the field lens 417 as it is.
- the relay optical system 43 is configured to transmit blue light of the three color lights, but is not limited to this, and may be configured to transmit red light, for example.
- the electro-optical device 44 has a liquid crystal panel 441 serving as three light modulating devices (a liquid crystal panel for red light is 441R, a liquid crystal panel for green light is 441G, and a liquid crystal panel for blue light is 441B. ), A polarizing plate 442, a viewing angle correction plate 444, and a cross dichroic prism 443. It is.
- the liquid crystal panels 441R, 441G, and 441B use, for example, a polysilicon TFT as a switching element.Each color light separated by the color separation optical system 42 is divided into these three liquid crystal panels 441R, 441G, and 441B. The light is modulated according to image information by the polarizing plates 442 on the light incident side and the light exit side to form an optical image.
- the polarizing plate 442 includes an incident-side polarizing plate 442A and an exit-side polarizing plate 442B disposed before and after the liquid crystal panel 441 (441R, 441G, 441B).
- the incident-side polarizing plate 442A transmits only polarized light in a certain direction and absorbs other light beams among the color lights separated by the color separation optical system 42, and the polarizing film is formed on a substrate that also has a force such as quartz or sapphire. Is affixed.
- the incident-side polarizing plate 442A is arranged so as to be position-adjustable with respect to a predetermined illumination optical axis set in the optical component housing 47 by a position adjustment mechanism described below, which constitutes the optical component housing 47. Have been. The position adjustment mechanism will be described when the optical component casing 47 is described.
- the exit-side polarizing plate 442B is also configured in substantially the same manner as the incident-side polarizing plate 442A, and allows only the polarized light in a predetermined direction to pass through the emitted light beams, while allowing other light beams to pass through. It absorbs.
- a polarizing film may be attached to the cross-dye Kroic prism 443 without using a substrate.
- the incident side polarizing plate 442A and the exit side polarizing plate 442B are set so that the directions of the polarization axes thereof are orthogonal to each other.
- the viewing angle correction plate 444 is formed by forming an optical conversion film having a function of correcting the viewing angle of an optical image formed by the liquid crystal panel 441 (441R, 441G, 441B) on a substrate. By arranging such a viewing angle correction plate 444, light leakage at the time of a black screen is reduced, and the contrast of a projected image is greatly improved.
- the viewing angle correction plate 444 is provided in a predetermined manner set in the optical component housing 47 by a position adjustment mechanism (described later) constituting the optical component housing 47, similarly to the incident side polarizing plate 442A. It is arranged so that the position can be adjusted with respect to the illumination optical axis. The position adjusting mechanism will be described when the optical component casing 47 is described.
- the cross dichroic prism 443 has three liquid crystal panels 441R, 441G, and 441B.
- a color image is formed by synthesizing an image modulated for each emitted color light.
- a dielectric multilayer film that reflects red light and a dielectric multilayer film that reflects blue light are formed in an approximately X shape along the interface of the four right-angle prisms.
- the three colored lights are synthesized by the dielectric multilayer film.
- the projection lens 46 is configured as a combined lens in which a plurality of lenses are combined, and enlarges and projects a color image synthesized by the cross dichroic prism 443 on a screen.
- the projection lens 46 includes a lever 46A for changing the relative positions of the plurality of lenses, and is configured to be capable of adjusting the focus and the magnification of the projected color image.
- optical systems 41 to 44 described above are housed in an optical component casing 47.
- the optical component housing 47 is composed of a lower housing 471 (FIG. 2) provided with a groove portion into which the above-mentioned optical components 414-419, 421—423, 431—434 are slidably fitted from above and a lower housing 471 (FIG. 2).
- a lid-shaped upper housing 472 (FIG. 2) that closes the upper opening side of the housing 471, and a part of the upper housing 472, including both the incident-side polarizing plate 442A and the viewing angle correction plate 444. It is provided with a position adjustment mechanism 445 (FIG. 2) for performing the adjustment.
- a light source device 413 is accommodated on one end side of the optical component casing 47 having a substantially U-shape in a plane, and the other end side is provided with respect to an illumination optical axis set in the optical component casing 47.
- the projection lens 46 is fixed at a predetermined position. Further, an electro-optical device 44 is fixed at a stage before the optical path of the projection lens 46.
- FIG. 4 to 6 are views for explaining the position adjusting mechanism 445.
- FIG. 4 is a diagram in which a part of the upper housing 472 on the side of the electro-optical device 44 is also viewed with an upward force.
- FIG. 5 is a perspective view of the optical component holding frame 446 constituting the position adjusting mechanism 445 as viewed from above.
- FIG. 6 is a perspective view of the optical component holding frame 446 constituting the position adjusting mechanism 445 as viewed from below.
- the position adjusting mechanism 445 includes an optical component holding frame 446 that holds both the incident side polarizing plate 442A and the viewing angle correction plate 444, and an optical component holding frame 446 that is located on the upper surface of the upper housing 472. And a holding frame posture adjusting section 447 that supports the frame 446 so that the posture can be adjusted.
- the position adjusting mechanism 445 on the liquid crystal panel 441B side adjusts the holding frame posture.
- the optical component holding frame 446 is omitted to show the part 447 in detail.
- the upper housing 472 has an opening for accommodating the optical components 414, 419, 421—423, 431—434 among the openings of the lower housing 471.
- a substantially rectangular opening 472A (FIG. 4) is formed above the electro-optical device 44 so as to surround the electro-optical device 44 in a plane. I have.
- the holding frame posture adjustment unit 447 includes a holding frame support unit 4471 that movably supports the optical component holding frame 446, an adjustment member tip support unit 4472 that supports the tip of a driver, and the like, and a moving state of the optical component holding frame 446. And a rotation-preventing restricting portion 4473 for defining the end position of the motor.
- the holding frame supporting portion 4471 is erected on the upper surface of the upper housing 472 along a plane parallel to the opening 472A of the upper housing 472 and a plane perpendicular to the opening 472A, and is formed in a substantially + -shape in plan view. Have been.
- an optical component holding frame support surface 4471A that is upwardly convex and has an arcuate shape in a plan view is formed around the illumination optical axis of the light beam emitted from the light source device 413.
- a fixing hole 4471B as a fixing member attaching portion is formed downward substantially at the center of the optical component holding frame support surface 4471A.
- the fixing hole 4471B is formed to have a screwing structure such as a screw hole.
- the adjustment member tip support portion 4472 is located in front of the optical path of the holding frame support portion 4471 (in a direction away from the opening 472A of the upper housing 472), and stands upright on the upper surface of the upper housing 472.
- a substantially V-shaped notch is formed on the upper surface of the adjustment member tip support portion 4472, and a valley portion extends in a direction orthogonal to the opening 472A of the upper housing 472, and a holding frame extends along an extension of the valley portion.
- a substantially central portion of the support portion 4471 is located.
- the rotation prevention regulating portions 4473 are erected on the sides of the adjustment member distal end support portion 4472, respectively, and are erected on the upper surface of the upper housing 472.
- the rotation prevention regulating portion 4473 is formed in a substantially L-shape in plan view, and the L-shaped side surface is formed on the upper surface of the adjustment member tip support portion 4472. It is provided so as to be perpendicular to the notch valley.
- the rotation prevention restricting portion 4473 defines the end position of the optical component holding frame 446 in the moving direction, contacts the end surface of a first holding frame projecting portion of the optical component holding frame 446 described later, and To prevent misalignment.
- the rotation prevention restricting portion 4473 is not limited to a substantially L-shape in plan view, and may have a substantially I-shape in plan view. That is, the side surfaces of the rotation prevention restricting portion 4473 may be provided so as to be perpendicular to the valleys of the notches formed on the upper surface of the adjustment member distal end support portion 4472.
- the end position of the optical component holding frame 446 in the moving direction can also be specified in the track hole 4461 B3 of the polarizing plate holding frame 4461, and the size (length) of the track hole 4461B3 is set to a predetermined size. For example, it is also possible to omit the rotation prevention regulation part 4473.
- the optical component holding frame 446 is rotatably supported by the holding frame attitude adjusting section 447, and holds the incident-side polarizing plate 442A and the viewing angle correction plate 444 in an adjustable manner.
- the optical component holding frame 446 includes a polarizing plate holding frame 4461 as a first holding frame for holding the incident-side polarizing plate 442A, and a second holding frame for holding the viewing angle correction plate 444.
- a correction plate holding frame 4462 as a frame.
- the polarizing plate holding frame 4461 and the correction plate holding frame 4462 are integrated so that the positions of the incident-side polarizing plate 442A and the viewing angle correction plate 444 can be adjusted independently.
- FIG. 7 is a perspective view of the polarizing plate holding frame 4461 viewed from above.
- the polarizing plate holding frame 4461 has a substantially rectangular plate-shaped first plate-like member 4461A, and protrudes from the upper edge of the first plate-like member 4461A in a substantially normal direction of the plate surface.
- the first plate-shaped member 4461A and the first holding frame projection 4461B are formed integrally.
- an opening 4461A1 is formed substantially at the center.
- a concave portion 4461A2 which is depressed in the thickness direction is formed at a peripheral portion of the opening 4461A1.
- the recess 4461 A2 has substantially the same dimensions as the outer dimensions of the incident-side polarizing plate 442A, and has upper and lower edges projecting from the first plate-shaped member 4461A toward the light beam exit side.
- a functioning positioning part 4461 A3 is formed as the reference position for the external position of the entrance-side polarizer 442A.
- the position of the incident side polarizing plate 442A with respect to the polarizing plate holding frame 4461 is defined by matching its outer shape to the positioning portion 4461 A3, and is held and fixed at a predetermined position of the concave portion 4461A2 via an adhesive or the like.
- an adhesive or the like for example, a protrusion having a dimension longer than the thickness of the incident-side polarizing plate 442A is projected from the concave portion 4461 A2, and the protrusion is bent by thermal force or the like. Then, the incident side polarizing plate 442A may be caulked and fixed to the polarizing plate holding frame 4461.
- an engagement portion 4461A4 cut out so as to project downward is formed substantially at the center of the upper edge.
- the engaging portion 4461 A4 is engaged with an external optical axis adjustment jig (not shown) dedicated to optical axis adjustment.
- a first bulging portion 4461A5 bulging outward along the plate surface of the first plate-like member 4461A is formed substantially at the center of the left and right side edges.
- the first bulging portion 4461A5 is inserted into a groove (not shown) formed in the lower housing 471, and the polarizing plate holding frame 4461 is It prevents movement in the direction along the illumination optical axis set in the lower housing 471. Further, since the first bulging portion 4461A5 is formed in a substantially arc shape in plan view, even when the polarizing plate holding frame 4461 is installed in the lower housing 471, the polarizing plate holding frame 4461 is smoothly rotated. can do.
- the first holding frame protrusion 4461B protrudes from the left and right position of the engaging portion 4461 A4 of the first plate-shaped member 4461A in a substantially normal direction of the first plate-shaped member 4461A, respectively, and the protrusion direction substantially. It is formed in an H-shape in plan view that connects to each other at the center. Then, an external optical axis adjustment jig (not shown) can be inserted through the opening of the base end portion of the first holding frame projection 4461B with respect to the first plate-shaped member 4461A. The jig can be engaged.
- the first holding frame projecting portion 4461B is curved downward in a concave shape corresponding to the optical component holding frame support surface 4471A (FIG. 4) of the holding frame support portion 4471, and from the light beam incident side or the light beam emission side. When viewed, it is formed in a substantially arc shape.
- the lower end surface of the first holding frame protrusion 4461B is the first curved surface 4461B1 (Fig. 6).
- the polarizing plate holding frame 4461 is supported by the holding frame support 4471 with the first curved surface 4461B1 abutting on the optical component holding frame support surface 4471A (FIG. 4) of the holding frame support 4471. That is, the polarizing plate holding frame 4461 is supported in a state where the first curved surface 4461B1 is slidable on the optical component holding frame support surface 4471A (FIG. 4) of the holding frame support portion 4471, and is inside the optical component housing 47.
- the position of the incident-side polarizing plate 442A can be adjusted in a plane perpendicular to the illumination optical axis with the illumination optical axis set as the center.
- the upper end surface of the first holding frame protrusion 4461B serves as a rotation guide surface 4461B2 (FIG. 7), and the correction plate holding frame 4462 is slidably supported on the rotation guide surface 4461B2.
- a track hole 4461B3 as a long hole penetrating from the rotation guide surface 4461B2 to the first curved surface 4461B1 is formed at a substantially central portion of the connection portion of the first holding frame protrusion 4461B.
- the track hole 4461B3 is formed so as to extend in the sliding direction of the polarizing plate holding frame 4461 with respect to the holding frame support 4471.
- the tip of the first holding frame projecting portion 4461B with respect to the first plate-shaped member 4461A becomes a polarizing plate moving operation portion 4461B4 for operating the movement of the polarizing plate holding frame 4461.
- the width dimension of the polarizing plate moving operation part 4461B4 is formed smaller than the distance between the two rotation prevention regulating parts 4473 (FIG. 4) of the holding frame attitude adjustment part 447.
- FIG. 8 is a perspective view of the correction plate holding frame 4462 viewed from above.
- the correction plate holding frame 4462 protrudes in a substantially normal direction of the plate surface from a substantially rectangular plate-like second plate-like member 4462A and an upper edge of the second plate-like member 4462A.
- an opening 4462A1 is formed at a substantially central portion thereof.
- a positioning portion 4462A2 which protrudes from the second plate-shaped member 4462A to the light beam emission side and functions as an external position reference surface of the viewing angle correction plate 444, is formed.
- the position of the viewing angle correction plate 444 relative to the correction plate holding frame 4462 is defined by matching its outer shape to the positioning portion 4462A2, and is held at a predetermined position of the second plate-like member 4462A via an adhesive or the like. Fixed.
- a protrusion having a dimension longer than the thickness dimension of the viewing angle correction plate 444 is projected from the upper and lower edges and the left and right edges of the second plate-shaped member 4462A.
- a configuration may be adopted in which the projection portion is bent by thermal force or the like to caulk and fix the viewing angle correction plate 444 to the correction plate holding frame 4462!
- a substantially triangular extension 4462A3 in plan view, which extends upward, is formed substantially at the center of the upper edge.
- a second bulging portion 4462A4 bulging outward along the plate surface of the second plate-shaped member 4462A is formed substantially at the center of the left and right end edges.
- the second bulging portion 4462A4 is inserted into a groove (not shown) formed in the lower housing 471, and the correction plate holding frame 4462 is It prevents movement in the direction along the illumination optical axis set in the lower housing 471.
- the second bulging portion 4462A4 is formed in a substantially arc shape in plan view, even when the correction plate holding frame 4462 is installed in the lower housing 471, the correction plate holding frame 4462 is smoothly rotated. can do.
- the second holding frame projecting portion 4462B is a projecting portion 4462 B1 that projects in the extension direction of the extending portion 4462A3 of the second plate-shaped member 4462A and also has a partial force at the distal end in a substantially normal direction of the second plate-shaped member 4462A.
- the projection 4462B1 also has a bending portion 4462B2 that also extends in the left and right directions in the protruding direction of the projection 4462B1 and that curves downward so as to be concave, and is formed in a substantially T-shape in plan view.
- the protruding portion 4462B1 is provided with a correction plate moving operation portion 4462B3 as a moving operation portion that also protrudes upward at one edge (the left edge in FIG. 8).
- the curved portion 4462B2 corresponds to the rotation guide surface 4461B2 (Fig. 7) of the first holding frame projecting portion 4461B, and is concavely curved downward, when viewed from the light beam incident side or the light beam exit side. In addition, it is formed in a substantially arc shape.
- the lower end surface of the curved portion 4462B2 is the second end.
- the curved surface 4462B4 (FIG. 6) is formed, and the correction plate holding frame 4462 is supported by the polarizing plate holding frame 4461 with the second curved surface 4462B4 abutting on the rotation guide surface 4461 B2 (FIG. 7) of the polarizing plate holding frame 4461. Is done.
- the correction plate holding frame 4462 is supported in a state where the second curved surface 4462B4 can slide on the rotation guide surface 4461B2 of the polarizing plate holding frame 4461, and the illumination optical axis set in the optical component casing 47.
- the position of the viewing angle correction plate 444 can be adjusted in a plane perpendicular to the illumination optical axis.
- a track hole 4462B5 is formed as a long hole penetrating through the second curved surface 4462B4 with respect to the upper end face force.
- the track hole 4462B5 is formed so as to extend in the extending direction of the curved portion 4462B2, that is, the sliding direction of the correction plate holding frame 4462 with respect to the polarizing plate holding frame 4461.
- the material of the polarizing plate holding frame 4461 and the correction plate holding frame 4462 described above is not particularly limited, but, for example, it is preferable to also form a member having thermal conductivity.
- a heat conductive member By using such a heat conductive member, the incident side polarizing plate 442A and the viewing angle correction plate 444 transfer the heat generated by the light flux emitted from the light source device 413 to the polarizing plate holding frame 4461 and the correction plate holding frame.
- the heat can be dissipated to 4462, and thermal deterioration of the incident side polarizing plate 442A and the viewing angle correction plate 444 can be avoided.
- the heat conductive member a metal such as invar and an iron-nickel alloy such as 42NiFe, an aluminum alloy, a magnesium alloy, carbon steel, brass, and stainless steel, or a carbon filler such as carbon fiber and carbon nanotube is mixed.
- Resins polycarbonate, polyphenylene sulfide, liquid crystal resin, etc.
- FIG. 9 shows how the position adjustment of the incident-side polarizing plate 442A and the viewing angle correction plate 444 is performed.
- the polarizing plate holding frame 4461 holds the incident-side polarizing plate 442A and the holding frame support 4471 supports the optical component holding frame.
- the first curved surface 4461 B 1 of the polarizing plate holding frame 4461 is brought into contact with the surface 4471 A, and the polarizing plate holding frame 4461 is set on the upper housing 472.
- the correction is performed so that the second curved surface 4462B4 of the correction plate holding frame 4462 abuts on the rotation guide surface 4461 B2 of the polarizing plate holding frame 4461.
- the plate holding frame 4462 is set on the polarizing plate holding frame 4461.
- the screw 4463 is loosely screwed into the fixing hole 4471B of the holding frame support 4471 via the track hole 4462B5 of the correction plate holding frame 4462 and the track hole 4461B3 of the polarizing plate holding frame 4461 (FIG. 7). .
- the side surface of the driver DR and the edge of the notch 4461B5 abut, and the polarizing plate holding frame is moved along the moving direction of the driver DR.
- 4461 slides on the optical component holding frame support surface 4471A of the holding frame support portion 4471.
- the position of the incident side polarizing plate 442A is adjusted in a plane orthogonal to the illumination optical axis with the illumination optical axis set in the optical component casing 47 as the center.
- the width dimension of the polarizing plate moving operation part 4461B4 of the polarizing plate holding frame 4461 is formed smaller than the distance dimension of the two rotation prevention regulating parts 4473 of the holding frame posture adjusting part 447,
- the polarizing plate holding frame 4461 can be slid on the optical component holding frame support surface 4471A of the holding frame support 4471.
- the end position of the polarizing plate holding frame 4461 when the polarizing plate holding frame 4461 is moved can be defined by the end of the polarizing plate moving operation portion 4461B4 abutting against the rotation prevention regulating portion 4473 when the polarizing plate holding frame 4461 slides.
- the correction plate moving operation unit 4462B3 of the correction plate holding frame 4462 is grasped by hand, and the correction plate moving operation unit 4462B3 is By moving to the right, the correction plate holding frame 4462 slides on the rotation guide surface 4461B2 of the polarizing plate holding frame 4461 along the moving direction of the correction plate moving operation unit 4462B3.
- the sliding of the correction plate holding frame 4462 adjusts the position of the viewing angle correction plate 444 in a plane orthogonal to the illumination optical axis with the illumination optical axis set in the optical component casing 47 as the center.
- the polarizing plate holding frame 4461 constituting the optical component holding frame 446 slides on the optical component holding frame support surface 4471A formed on the upper surface of the upper housing 472.
- a rotation guide surface 4461B2 for rotatably supporting a correction plate holding frame 4462 constituting the optical component holding frame 446 is formed, the polarizing plate holding frame 4461 and the correction plate holding frame 4462 are connected to the rotation guide surface 4461B2.
- the optical component holding frame 446 can hold the incident side polarizing plate 442A and the viewing angle correction plate 444 which are arranged close to each other.
- the polarizing plate holding frame 4461 is formed with a first curved surface 4461 B 1 corresponding to the optical component holding frame support surface 4471 A of the upper housing 472, so that the polarizing plate holding frame 4461 is formed. Can be rotated along the optical component holding frame support surface 4471A, and the position adjustment of the incident side polarizing plate 442A can be easily and accurately performed with a simple structure.
- the rotation guide surface 4461B2 is formed on an end surface facing the first curved surface 4461B1. Therefore, the first holding frame projection 4461B has a curved shape centered on the illumination optical axis of the light beam, so that the curved inner end surface is the first curved surface 4461B1 and the curved outer end surface is the rotation guide surface 4461B2.
- the polarizing plate holding frame 4461 can be easily manufactured.
- an optical component holding frame support surface 4471A is formed on the upper surface of the upper housing 472, and a rotation guide is provided on an end face of the polarizing plate holding frame 4461 opposite to the first curved surface 44 61B1 that contacts the optical component holding frame support surface 4471A. Since the surface 4461B2 is formed, the upper part of the upper housing 472 can easily install the polarizing plate holding frame 4461 with respect to the upper housing 472, and the polarizing plate can be installed from above the polarizing plate holding frame 4461.
- the correction plate holding frame 4462 can be easily installed on the holding frame 4461. Therefore, the optical component holding frame 446 can be easily attached to and detached from the upper housing 472, and the replacement of the incident side polarizing plate 442A and the viewing angle correction plate 444 held by the optical component holding frame 446 can be easily performed.
- the correction plate holding frame 4462 is formed with the second curved surface 4462B4 corresponding to the rotation guide surface 4461B2 of the polarizing plate holding frame 4461, so that the correction plate holding frame 4462 is attached to the polarizing plate holding frame 4461. Can be rotated along the rotation guide surface 4461B2, and the position adjustment of the viewing angle correction plate 444 can be easily and accurately performed with a simple structure.
- Track holes 4461B3 and 4462B5 are formed in the polarizing plate holding frame 4461 and the correction plate holding frame 4462, respectively, so that each track 4461B3 and 4462B5 has at least a force S in a plane. have a finger in the pie.
- the optical component holding frame support surface 4471A of the upper housing 472 is formed with a fixing hole 4471B to which a screw 4463 that is inserted through the track holes 4461B3 and 4462B5 is attached.
- both the polarizing plate holding frame 4461 and the correction plate holding frame 4462 can be fixed with a single screw 4463, and the incident side polarizing plate 442A according to the rotation of each holding frame 4461, 4462.
- the holding frames 4461 and 4462 can be fixed to the upper housing 472 at the optimum position of the viewing angle correction plate 444.
- the polarizing plate holding frame 4461 and the correction plate holding frame 4462 are fixed to the upper housing 472 by a screwing structure of the screw 4463 and the fixing hole 4471B, for example, the incident-side polarizing plate 442A or the viewing angle
- the position of the incident-side polarizing plate 442A or the viewing angle correction plate 444 can be easily corrected by loosening the screw 4463. Also, just loosen the screw 4463 and remove it.
- the viewing angle correction plate 444 can be replaced, and the holding frames 4461, 4462 can be easily attached and detached.
- each of the holding frames 4461 and 4462 is bonded and fixed to the upper housing 472 with an adhesive or the like, the attachment and detachment of each of the holding frames 4461 and 4462 with respect to the upper housing 472 can be performed easily and quickly. .
- track holes 4461B3 and 4462B5 are formed in each of the holding frames 4461 and 4462, the screws 4463 are loosened when adjusting the positions of the incident-side polarizing plate 442A and the viewing angle correction plate 444. In this state, the position of the incident-side polarizing plate 442A and the viewing angle correction plate 444 can be easily adjusted, and the fixed position can be easily and reliably fixed.
- the upper housing 472 is provided with an adjustment member tip support portion 4472, and the polarizing plate holding frame 4461 is formed with a notch 4461B5.
- the driver DR By moving the driver DR about the adjustment member tip support portion 4472 while being supported by the support portion 4472, the side surface of the driver DR and the edge of the notch 4461B5 abut, and the driver DR moves in the moving direction of the driver DR.
- the polarizing plate holding frame 4461 can be moved, and the polarizing plate holding frame 4461 can be slid on the optical component holding frame support surface 4471A. Therefore, the position of the incident-side polarizing plate 442A can be easily adjusted without using a dedicated optical axis adjusting jig to move the polarizing plate holding frame 4461.
- the correction plate moving operation unit 4462B3 is formed in the correction plate holding frame 4462, for example, the correction plate movement operation unit 4462B3 is grasped by hand, and the correction plate movement operation unit 4462B3 is moved. This allows the correction plate holding frame 4462 to slide on the rotation guide surface 4461B2. Accordingly, the position of the viewing angle correction plate 444 can be easily adjusted without using a dedicated optical axis adjustment jig to move the correction plate holding frame 4462.
- the polarizing plate holding frame 4461 holds the incident side polarizing plate 442A, and the correction plate holding frame 4462 holds the viewing angle correction plate 444. Therefore, the polarizing plate holding frame 4461 is attached to the upper housing 472.
- the angle of the polarization axis of the incident side polarizing plate 442A with respect to the emission side polarizing plate 442B can be adjusted. Viewing angle adjustment in the angle correction plate 444 can also be performed. Therefore, in the optical unit 4, an optical image with high contrast and a good viewing angle can be formed.
- each of the incident-side polarizing plates 442A and each of the viewing angle correction plates 444 are positioned in the optical component holding frame 446.
- By adjusting it is possible to form a projected image without color unevenness while realizing a high contrast ratio, suppressing a screen unevenness due to a viewing angle dependency generated in each of the liquid crystal panels 441R, 441G, and 441B.
- the polarizing plate holding frame 4461 as the first holding frame holds the incident-side polarizing plate 442A
- the correction plate holding frame 4462 as the second holding frame holds the viewing angle correction plate 444.
- the present invention is not limited to this, and it is also possible to adopt a configuration in which the first holding frame and the second holding frame respectively hold other two optical components arranged in close proximity.
- this optical component in addition to the incident side polarizing plate 442A and the viewing angle correcting plate 444, an emitting side polarizing plate 442B, a retardation plate, a color correction film, and the like can be exemplified.
- the rotation guide surface 4461B2 of the polarizing plate holding frame 4461 is a force formed on the end face of the first holding frame projection 4461B facing the first curved surface 4461B1. It may be formed at a position. For example, a projecting portion that protrudes from the light emitting side of the first plate-shaped member 4461A is formed, and a rotation guide surface is formed on an end surface of the projecting portion along the projecting direction. Then, a hole corresponding to the protruding portion is formed in the correction plate holding frame 4462, and the inner peripheral edge of the hole is used as a second curved surface that contacts the rotation guide surface.
- the correction plate holding frame 4462 is formed with the first curved surface 4461 B1 described in the above-described embodiment, and the protrusion that also protrudes the end face force on the light beam incident side of the second plate member 4462A of the correction plate holding frame 4462.
- a rotation guide surface is formed on the end surface along the direction in which the portion protrudes.
- the driver DR is employed as the adjustment member, but the invention is not limited to this. That is, the adjusting member may be a rod-shaped member. In such a configuration, the position of the optical component can be adjusted not only by the driver DR but also by various rod-shaped members, so that the position of the optical component can be adjusted more easily.
- the embodiment may be carried out using a dedicated optical axis adjustment jig. That is, depending on the degree of position adjustment of the incident-side polarizing plate 442A and the viewing angle correction plate 444, whether to perform the adjustment manually using a driver DR or the like, or to use a special optical axis adjustment jig May be appropriately selected.
- a part of the optical axis adjusting jig may be engaged with the engaging portion 4461 A4 of the polarizing plate holding frame 4461.
- the correction plate holding frame 4462 is moved by the optical axis adjustment jig, the correction plate movement operation unit 4462B3 and a part of the optical axis adjustment jig may be engaged!
- the present invention is not limited to this.
- a pin-shaped member may be employed as the fixing member, and the fixing hole 4471B may be configured to have a shape that fits with the pin-shaped member.
- the polarizing plate holding frame 4461 is bonded and fixed to the upper housing 472 with an adhesive or the like, and the correction plate holding frame 4462 is fixed to the polarizing plate holding frame 4461. Adhesively fixed.
- the power described in the projector 1 using the three liquid crystal panels 441 is not limited to this.
- the present invention can be applied to a projector using only one liquid crystal panel, a projector using two liquid crystal panels, or a projector using four or more liquid crystal panels.
- the optical unit 4 has a substantially U-shape in plan view.
- the shape may be a substantially L-shape in plan view.
- the best configuration for carrying out the present invention is the force disclosed in the above description.
- the present invention is not limited to this.
- the present invention has been particularly illustrated and described mainly with respect to a specific embodiment, but the shape, shape, and shape of the embodiment described above do not depart from the technical idea and the scope of the invention.
- Those skilled in the art can make various modifications in the material, the quantity, and other detailed configurations. Therefore, the description of the shapes, materials, and the like disclosed above is merely an example for facilitating the understanding of the present invention, and does not limit the present invention.
- the description of the names of the members excluding some or all of the restrictions on the materials and the like is included in the present invention.
- the optical component housing and the optical device of the present invention can be miniaturized and the manufacturing cost can be reduced. Therefore, the optical component housing used for a projector used in the fields of presentations, home theaters, and the like. And it is useful as an optical device.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003356205A JP4168899B2 (ja) | 2003-10-16 | 2003-10-16 | 光学部品用筐体、光学装置、およびプロジェクタ |
JP2003-356205 | 2003-10-16 |
Publications (1)
Publication Number | Publication Date |
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WO2005038521A1 true WO2005038521A1 (ja) | 2005-04-28 |
Family
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/014842 WO2005038521A1 (ja) | 2003-10-16 | 2004-10-07 | 光学部品用筐体、光学装置、およびプロジェクタ |
Country Status (4)
Country | Link |
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US (1) | US7086745B2 (ja) |
JP (1) | JP4168899B2 (ja) |
CN (1) | CN100498508C (ja) |
WO (1) | WO2005038521A1 (ja) |
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JP2009276573A (ja) * | 2008-05-15 | 2009-11-26 | Sharp Corp | 液晶表示装置 |
EP3214494A4 (en) * | 2014-10-27 | 2018-03-21 | Seiko Epson Corporation | Optical compensation element adjusting mechanism and projector |
TWI714759B (zh) * | 2017-04-26 | 2021-01-01 | 揚明光學股份有限公司 | 鏡片調整機構 |
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TWM283206U (en) * | 2005-04-22 | 2005-12-11 | Coretronic Corp | Fixing structure |
JP2007041529A (ja) * | 2005-06-30 | 2007-02-15 | Konica Minolta Opto Inc | 投射光学系の製造方法及び投射光学系 |
TW200705083A (en) * | 2005-07-29 | 2007-02-01 | Coretronic Corp | Projector |
JP4190529B2 (ja) * | 2005-09-09 | 2008-12-03 | 三洋電機株式会社 | プロジェクタ装置 |
JP2007163654A (ja) * | 2005-12-12 | 2007-06-28 | Chinontec Kk | プロジェクタ |
TWI310868B (en) * | 2006-04-19 | 2009-06-11 | Benq Corp | Projector |
JP5084242B2 (ja) * | 2006-12-14 | 2012-11-28 | Necディスプレイソリューションズ株式会社 | 光学素子調整機構、液晶表示装置、および投写型表示装置 |
JP5144230B2 (ja) * | 2007-11-22 | 2013-02-13 | 株式会社 清原光学 | 偏光板の角度制御装置 |
JP5693263B2 (ja) * | 2011-01-28 | 2015-04-01 | キヤノン株式会社 | 画像投射装置 |
JP5803120B2 (ja) * | 2011-02-04 | 2015-11-04 | セイコーエプソン株式会社 | 虚像表示装置 |
JP5799539B2 (ja) * | 2011-03-23 | 2015-10-28 | セイコーエプソン株式会社 | プロジェクター |
JP5861330B2 (ja) * | 2011-09-01 | 2016-02-16 | セイコーエプソン株式会社 | プロジェクター |
CN103246144B (zh) * | 2012-02-08 | 2015-06-03 | 英济股份有限公司 | 微投影装置及其光源模组 |
WO2016125222A1 (ja) * | 2015-02-05 | 2016-08-11 | ソニー株式会社 | プロジェクタ、機能性フィルタ及び代替用ガラス板 |
JP6650118B2 (ja) * | 2018-03-15 | 2020-02-19 | オムロン株式会社 | 乗員監視装置 |
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JP2002182213A (ja) * | 2000-12-12 | 2002-06-26 | Sony Corp | 投射型液晶表示装置およびその調整方法 |
JP2002221648A (ja) * | 2001-01-26 | 2002-08-09 | Canon Inc | 光学装置 |
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JP2009276573A (ja) * | 2008-05-15 | 2009-11-26 | Sharp Corp | 液晶表示装置 |
EP3214494A4 (en) * | 2014-10-27 | 2018-03-21 | Seiko Epson Corporation | Optical compensation element adjusting mechanism and projector |
US10073329B2 (en) | 2014-10-27 | 2018-09-11 | Seiko Epson Corporation | Optical compensation element adjusting mechanism and projector |
TWI714759B (zh) * | 2017-04-26 | 2021-01-01 | 揚明光學股份有限公司 | 鏡片調整機構 |
Also Published As
Publication number | Publication date |
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CN1754123A (zh) | 2006-03-29 |
JP2005121880A (ja) | 2005-05-12 |
US7086745B2 (en) | 2006-08-08 |
US20050110962A1 (en) | 2005-05-26 |
CN100498508C (zh) | 2009-06-10 |
JP4168899B2 (ja) | 2008-10-22 |
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