JP2017040753A - Angle adjustment mechanism and projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an angle adjustment mechanism capable of simply adjusting an angle of an object, and a projector.SOLUTION: An angle adjustment mechanism 5 adjusts an attachment angle of an object (reflection mirror 335) attached to an attachment member (optical component housing 36). The angle adjustment mechanism adjusts the attachment angle of the object being fixed to the attachment member (optical component housing 36) and attached to the attachment member. The angle adjustment mechanism comprises: a first biasing member (pressing member 6) being fixed to the attachment member (optical component housing 36) and biasing one surface of the object (reflection mirror 335); a second biasing member (fixing member 7) being fixed to the attachment member (optical component housing 36) and biasing the other surface facing one surface; and an adjusting member fixing the first biasing member (pressing member 6) to the attachment member (optical component housing) and adjusting biasing force for biasing one surface.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an angle adjustment mechanism and a projector.

Conventionally, an illumination device, a light modulation device that modulates light emitted from the illumination device to form an image according to image information, and a projection optical device that enlarges and projects the image on a projection surface such as a screen Are known.
As such a projector, a plurality of dichroic mirrors that separate red, green, and blue light emitted from the illumination device, and a plurality of light guides that guide the separated color light to a light modulation device that is provided according to each color light. A projector including a color separation device having a reflection mirror is known (see, for example, Patent Document 1).

  The projector described in Patent Document 1 separates light emitted from a light source into red light, green light, and blue light by two dichroic mirrors. Of these red light, green light, and blue light, green light is reflected by the dichroic mirror and enters the liquid crystal light valve. The red light and the blue light are separated by a dichroic mirror, reflected by a reflection mirror, and incident on a liquid crystal light valve.

JP 2002-90877 A

  By the way, in the projector described in Patent Document 1, green light is separated by a dichroic mirror and directly incident on the liquid crystal light valve, and red light and blue light are reflected by the reflecting mirror and incident on the liquid crystal light valve. It is necessary to fix the optical elements such as the dichroic mirror and the reflection mirror to the optical component casing after adjusting the angle. For this reason, in such a projector, for example, when fixing the reflection mirror or the like to the optical component housing, the angle of the reflection mirror is adjusted with a predetermined jig and adjusted to a desired angle. It is firmly fixed to the housing with an adhesive or the like.

However, when the fixing method as described above is employed in the assembly process of the projector, it is necessary to adjust the angle of an optical element such as a reflection mirror with a predetermined jig and then fix it with an adhesive or the like. That is, in the above fixing method, it is necessary to go through two steps, an angle adjusting step for adjusting the angle of the optical element and a fixing step for fixing the optical element on which the angle adjustment has been performed with an adhesive or the like. There is a problem of increasing.
Further, when the optical element is fixed with an adhesive or the like, there is a problem that the angle of the optical element cannot be adjusted after the fixing, and further, the optical element cannot be easily replaced in maintenance or the like.
From such a problem, an angle adjustment mechanism that can easily adjust the angle of an object such as an optical element fixed to the optical component casing is desired.

  SUMMARY An advantage of some aspects of the invention is to provide an angle adjusting mechanism and a projector that can easily adjust the angle of an object.

  The angle adjustment mechanism according to the first aspect of the present invention is an angle adjustment mechanism that adjusts an attachment angle of an object attached to an attachment member, and is fixed to the attachment member and biases one surface of the object. A first biasing member, a second biasing member fixed to the mounting member and biasing the other surface facing the one surface, and the first biasing member fixed to the mounting member, And an adjusting member that adjusts an urging force that urges the one surface.

In addition, an optical element etc. can be illustrated as said target object.
According to the first aspect, since the object is urged by the first urging member and the second urging member, the object is fixed by the respective urging forces of the first urging member and the second urging member. The According to this, since the object is not fixed by the adhesive or the like, the reusability of the object can be improved. Moreover, since the position of the contact part in a 1st biasing member can be adjusted with an adjustment member, the biasing force with respect to the target object of a 1st biasing member can be varied with the said adjustment member. Thereby, the angle of a target object can be varied only by adjusting an adjustment member. Therefore, the angle adjustment of the object can be simplified.

In the first aspect, the first urging member includes an arrangement portion arranged on the attachment member, an extension portion extending in a direction intersecting the arrangement portion from one end side of the arrangement portion, and the arrangement. A curved portion extending from the other end side of the portion in a direction opposite to the extending direction of the extending portion and having flexibility so as to be able to contact and separate from the arrangement portion side along the extending direction; An abutting portion that abuts against the object, the abutting portion is located on a distal end side of the bending portion, and the placement portion and the bending portion are each a hole portion through which the adjustment member is inserted. It is preferable to have.
According to the said 1st aspect, an adjustment member can be inserted in the arrangement | positioning part of a 1st biasing member, and the hole of a curved part, and the biasing force of a 1st biasing member is varied according to the insertion amount of the said adjustment member. Can do. Accordingly, since the urging force of the first urging member changes only by operating the adjusting member, the angle of the object can be adjusted according to the urging force of the first urging member with respect to the second urging member.

In the first aspect, it is preferable that the adjustment member is a screw having a head portion and a shaft portion, and an inner diameter size of the hole portion of the bending portion is smaller than an outer diameter size of the head portion.
According to the first aspect, when the screw is inserted into the mounting member through the holes of the bending portion and the arrangement portion, the head portion of the screw presses the bending portion in the insertion direction of the screw. The portion is bent, and the contact portion that is located on the distal end side of the bending portion moves in a direction in which the contact portion approaches the object, so that the contact portion can press the object. Accordingly, the angle can be finely adjusted by reliably pressing the object.

In the first aspect, the second urging member has a first flat plate portion and a second flat plate portion that intersect each other, and each of the first flat plate portion and the second flat plate portion is fixed to the mounting member. A second urging member side fixing portion that is possible, and the first flat plate portion includes a first edge connected to the second flat plate portion, a second edge that intersects the first edge, and After extending from the position on the opposite side of the third edge and the second edge on the second edge to the extending direction side of the second flat plate part from the first flat plate part, An arcuate portion extending in a substantially arc shape on the side opposite to the extending direction and on the third edge side; a bent portion bent at the tip of the arcuate portion and in contact with the object; It is preferable to have.
According to the first aspect, since the urging member side fixing portion is formed on each of the two flat plate portions constituting the second urging member, the urging member side fixing portion causes the two flat plate portions to Among these, it can fix to a mounting member in the state which orient | assigned the desired flat plate part to the predetermined direction. According to this, since the second urging member can be used as an urging member having a different shape, the number of parts of the angle adjusting mechanism can be reduced, and the manufacturing cost can be reduced.

In the first aspect, the first urging member and the second urging member have a plurality of sets, and when viewed from the extending direction of the normal line of the one surface or the other surface, It is preferable that at least one pair of the urging member and the second urging member is disposed at a position substantially opposed to the object.
According to the first aspect, when viewed from the extending direction of the normal line of the one surface or the other surface, at least one set of the first urging member and the second urging member is an object. Therefore, the urging forces of the first urging member and the second urging member can be efficiently transmitted to the object. Therefore, it is possible to more firmly fix the object after maintaining the angle of the object after the angle adjustment by the adjusting member is completed.

In the first aspect, the object is formed in a rectangular plate shape, the second urging member is disposed along one side of the object, and the first urging member is a surface of the object. It is preferable to arrange at a diagonal position in the inside.
According to the first aspect, the pair of second urging members are arranged on one side of the rectangular plate-like object, and the pair of first urging members are arranged at diagonal positions in the surface of the object. Therefore, one of the pair of first urging members is disposed along a side facing the side. According to this, the optical element has three points: two points where the pair of second urging members are disposed and one point where the first urging member disposed along the opposite side is disposed. Can be supported (fixed). According to this, when the position of the first urging member disposed along the opposite side is changed by the adjustment member, the rotation axis connecting the two points where the second urging member is disposed is the center. The angle of the object can be adjusted. On the other hand, when the position of the first urging member disposed opposite to the second urging member with the optical element interposed therebetween is changed by the adjustment member, the object is moved around the rotation axis connecting the other two points. Angle adjustment is possible. Therefore, since the angle of the object can be adjusted around the two rotation axes, the angle of the object can be adjusted more freely.

In the first aspect, the object is preferably an optical element.
According to the first aspect, since the optical element is urged by the first urging member and the second urging member, the object is not fixed by an adhesive or the like, so that the reusability of the optical element can be improved. . Moreover, since the position of the contact part in a 1st biasing member can be adjusted with an adjustment member, the biasing force with respect to the optical element of a 1st biasing member can be varied with the said adjustment member. Thereby, the angle of an optical element can be varied only by adjusting an adjustment member. Therefore, the angle adjustment of the optical element can be simplified.

A projector according to a second aspect of the present invention includes a light source, a light modulation device that modulates light emitted from the light source, a projection optical device that projects light modulated by the light modulation device, and the optical element. An optical component casing as the mounting member to be mounted, and the angle adjusting mechanism are provided.
According to the said 2nd aspect, there can exist an effect similar to the angle adjustment mechanism which concerns on the said 1st aspect. In addition, since the angle adjustment mechanism is employed in the projector, the angle of the optical element can be freely adjusted, so that the optical axis of the light emitted from the light source can be reliably adjusted. Therefore, pixel shift of an image projected from the projector can be suppressed.

1 is a schematic perspective view of a projector according to an embodiment of the invention. FIG. 2 is a schematic diagram showing an internal configuration of a projector according to the embodiment. The top view of the housing | casing for optical components of the projector which concerns on the said embodiment. The perspective view of the housing | casing for optical components of the projector which concerns on the said embodiment. The perspective view of the reflective mirror fixed by the angle adjustment mechanism which concerns on the said embodiment. The perspective view of the reflective mirror fixed by the angle adjustment mechanism which concerns on the said embodiment. The perspective view of the fixing member which comprises the angle adjustment mechanism which concerns on the said embodiment. The top view of the fixing member which comprises the angle adjustment mechanism which concerns on the said embodiment. The perspective view of the press member which comprises the angle adjustment mechanism which concerns on the said embodiment. The side view of the press member which comprises the angle adjustment mechanism which concerns on the said embodiment. The figure which shows the press member and fixing member in case the screwing amount of the screw which concerns on the said embodiment is small. The figure which shows the press member and fixing member in case the screwing amount of the screw which concerns on the said embodiment is medium. The figure which shows the press member and fixing member in case the screwing amount of the screw which concerns on the said embodiment is the largest.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[External configuration of projector]
FIG. 1 is a schematic perspective view showing a projector 1 according to this embodiment.
The projector 1 according to the present embodiment modulates light emitted from an illuminating device 31 described later to form an image according to image information, and projects the image on a projection surface such as a screen in an enlarged manner. Device.
As will be described in detail later, the projector 1 includes an angle adjustment mechanism that adjusts the angle of the optical element, and the angle adjustment mechanism adjusts the angle of the optical element (for example, a reflection mirror) and performs the adjustment. It has a function of holding (fixing) the optical element at the angle.
As shown in FIG. 1, the projector 1 includes an exterior housing 2 that constitutes an exterior.

The exterior housing 2 is formed in a substantially rectangular parallelepiped shape having a top surface portion 21, a bottom surface portion 22, a front surface portion 23, a back surface portion 24, and left and right side surface portions 25 and 26.
The top surface portion 21 is provided with a pair of handles 211 that are used when the user holds the projector 1 or fixes the projector 1 to an appliance installed on a ceiling or the like. In addition, the top surface portion 21 is formed with an opening (not shown) for accommodating light source devices 31A and 31B, which will be described later, in the exterior housing 2 in a replaceable manner, and the opening is covered with a cover member 212. ing.
Although not shown in the drawings, the bottom surface portion 22 is provided with leg portions that come into contact with the installation surface when placed on an installation surface such as an installation table.
The front portion 23 is formed with an opening 231 through which a part of a projection optical device 35 constituting the image forming apparatus 3 described later is exposed.
In addition to these, although not shown in the drawings, the right side surface portion 26 is formed with an introduction port for introducing air outside the exterior housing 2 into the inside, and the left side surface portion 25 is formed in the exterior housing 2. An exhaust port for discharging air to the outside is formed.

[Internal configuration of projector]
FIG. 2 is a schematic diagram showing the internal configuration of the projector 1.
In addition to the outer casing 2, the projector 1 includes an image forming apparatus 3 and a cooling device 4 disposed in the outer casing 2 as shown in FIG. 2. In addition, although not shown, the projector 1 includes a control device that controls the projector 1 and a power supply device that supplies power to the electronic components that constitute the projector 1.

[Configuration of Image Forming Apparatus]
The image forming apparatus 3 forms and projects an image corresponding to the image information input from the control device. The image forming apparatus 3 includes an illumination device 31, a uniformizing device 32, a color separation device 33, an electro-optical device 34, a projection optical device 35, and an optical component housing 36.
Among these, the optical component casing 36 is a box-shaped casing in which the illumination optical axis Ax is set, and the illumination device 31, the equalizing device 32, and the color separation device 33 are the optical component casing 36. It is arrange | positioned in the position on the illumination optical axis Ax in the inside. Further, although the electro-optical device 34 and the projection optical device 35 are located outside the optical component housing 36, they are arranged according to the illumination optical axis Ax. The detailed configuration of the optical component housing 36 will be described later.

The illuminating device 31 includes a pair of light source devices 31A and 31B disposed to face each other, and a reflection mirror 31C disposed between the pair of light source devices 31A and 31B.
Each of the pair of light source devices 31A and 31B includes a light source lamp 311 and a reflector 312 and a storage body 313 that stores them inside. The light source devices 31A and 31B emit light toward the reflection mirror 31C.
The reflection mirror 31C reflects the light incident from the light source devices 31A and 31B in the same direction, and causes the light to enter the homogenizing device 32.

The homogenizer 32 uniformizes the illuminance in a plane orthogonal to the central axis of the light beam emitted from the illumination device 31. The homogenizer 32 includes a cinema filter 321, a first lens array 322, a UV filter 323, a second lens array 324, a polarization conversion element 325, and a superimposing lens 326.
Among these, the polarization conversion element 325 aligns the polarization direction of incident light into one type, and corresponds to the polarization conversion unit of the present invention.
The color separation device 33 separates the light beam incident from the uniformizing device 32 into three color lights of red (R), green (G), and blue (B). The color separation device 33 includes dichroic mirrors 331 and 332, reflection mirrors 333 to 336, and relay lenses 337 to 339.

The electro-optical device 34 modulates the separated color lights according to the image information, and then synthesizes the modulated color lights. The electro-optical device 34 includes a field lens 340, a liquid crystal panel 341 as a light modulation device provided for each color light (liquid crystal panels for red, green, and blue are respectively referred to as 341R, 341G, and 341B), incident side polarization It has a plate 342, an output side polarizing plate 343, and one color composition device 344. Of these, a dichroic prism can be employed as the color composition device 344. The electro-optical device 34 corresponds to the image forming unit of the present invention.
The projection optical device 35 is a projection lens that enlarges and projects the light beam (the light beam forming the image) synthesized by the color synthesis device 344 onto the projection surface. As such a projection optical device 35, a combined lens in which a plurality of lenses are arranged in a lens barrel can be adopted.

  In the following drawings and description, the Z direction indicates the traveling direction (projection direction) of the light projected from the projection optical device 35, and the X direction and the Y direction are orthogonal to the Z direction and orthogonal to each other. Indicates the direction to do. Among these, the Y direction is an upper direction that is opposite to the vertical direction (that is, from the bottom surface portion 22 of the exterior casing 2) when the projector 1 is arranged so that the Z direction is along the horizontal direction in plan view. X direction indicates a direction from left to right as viewed from the Z direction side (light traveling direction side).

[Configuration of optical component casing]
3 is a plan view of the optical component casing 36 of the projector 1 as viewed from the Y direction side, and FIG. 4 is a perspective view of the optical component casing 36 as viewed from the X direction side. 3 and 4 show a state in which the top surface portion of the optical component casing 36 is removed. 4 shows the optical component casing 36 in a state in which some optical components fixed to the optical component casing 36 shown in FIG. 3 are removed.
The optical component housing 36 corresponds to the mounting member of the present invention, and includes a bottom surface portion 360, outer surface portions 361 to 367, an inner surface portion 368, and a top surface portion (not shown) as shown in FIGS. The optical component housing 36 includes three angle adjustment mechanisms 5 (hereinafter, the red light angle adjustment mechanism is the angle adjustment mechanism 5R, the green light angle adjustment mechanism is the angle adjustment mechanism 5G, and the blue light angle adjustment mechanism). May be referred to as an angle adjusting mechanism 5B).

  The bottom surface portion 360 is formed in a substantially U shape. The outer surface portions 361 to 367 extending in the Y direction are provided from the outer edges of the bottom surface portion 360, respectively. In addition, a substantially triangular prism-shaped inner side surface portion 368 extending in the Y direction is provided at the center portion of the bottom surface portion 360. The bottom surface portion 360, the outer surface portions 361 to 367, and the inner surface portion 368 are integrally formed. However, the present invention is not limited to this, and each may be formed as a separate member.

  The outer side surface portion 361 is a side surface portion that is located closest to the X direction side when the optical component housing 36 is viewed from the Y direction side. An end of the outer surface 361 opposite to the Z direction is connected to the outer surface 362, and an end of the Z direction is connected to the outer surface 367. Groove parts 3611, 3612, and 3613 are formed in the outer surface part 361. Further, groove portions 3681 and 3682 are formed at positions of the inner side surface portion 368 facing the groove portions 3611 and 3612. Further, a groove portion 3661 is formed at a position of the outer surface portion 366 facing the groove portion 3613. The dichroic mirror 331 is fitted into the grooves 3611 and 3681 from the Y direction side. In addition, the superimposing lens 326 is fitted into the grooves 3612 and 3682 from the Y direction side. Further, a dichroic mirror 332 is fitted into the grooves 3613 and 3661 from the Y direction side. As a result, the dichroic mirrors 331 and 332 and the superimposing lens 326 are securely fixed to the optical component casing 36.

The outer side surface portion 362 is a side surface portion that is located on the most opposite side to the Z direction when the optical component housing 36 is viewed from the Y direction side. The end portion on the X direction side of the outer surface portion 362 is connected to the outer surface portion 361 as described above, and the end portion on the opposite side to the X direction is connected to the outer surface portion 363. The outer surface portion 362 has a protruding portion 3620 that protrudes in the direction opposite to the Z direction.
Further, a groove portion 3621 is formed in the outer side surface portion 362. Further, a groove portion 3683 is formed at a position of the inner side surface portion 368 facing the groove portion 3621. The relay lens 337 is fitted into the groove portions 3621 and 3683 from the Y direction side. As a result, the relay lens 337 is securely fixed to the optical component housing 36.

  The outer side surface portion 363 is a side surface portion that is located on the most opposite side to the X direction and farthest from the Z direction when the optical component housing 36 is viewed from the Y direction side. The end portion on the X direction side of the outer surface portion 363 is connected to the outer surface portion 362 as described above, and the end portion on the opposite side to the X direction is connected to the outer surface portion 364. Groove parts 3631 and 3632 are formed at both ends of the outer surface part 363, and the reflection mirror 333 is fitted into the groove parts 3631 and 3632 from the Y direction side. Thereby, the reflection mirror 333 is reliably fixed to the optical component casing 36.

  The outer side surface portion 364 is a side surface portion that is located on the side opposite to the X direction when the optical component housing 36 is viewed from the Y direction side, and is disposed at a position facing the outer side surface portion 361. The end of the outer surface 364 opposite to the Z direction is connected to the outer surface 363 as described above, and the end of the Z direction is connected to the outer surface 365. Groove portions 3641 and 3642 are formed in the outer surface portion 364. In addition, groove portions 3684 and 3585 are formed at positions facing the groove portions 3641 and 3642 of the inner side surface portion 368. The relay lens 338 is fitted into the grooves 3641 and 3684 from the Y direction side, and the relay lens 339 is fitted into the grooves 3642 and 3865 from the Y direction side. Accordingly, the relay lenses 338 and 339 are securely fixed to the optical component housing 36.

  The outer side surface portion 365 is a side surface portion that is located on the side opposite to the X direction and closest to the Z direction when the optical component housing 36 is viewed from the Y direction side. The end of the outer surface 365 opposite to the Z direction is connected to the outer surface 364 as described above, and the end of the Z direction is connected to the outer surface 366. An angle adjustment mechanism 5R is disposed on the outer surface portion 365, and the reflection mirror 334 is fixed by the angle adjustment mechanism 5R.

The outer side surface portion 366 is a U-shaped side surface portion that is located closest to the Z direction side when the optical component housing 36 is viewed from the Y direction side. The end of the outer surface 366 opposite to the Z direction is connected to the outer surface 365 as described above, and the end of the Z direction is connected to the outer surface 366. A reflection mirror 334 is fixed to the outer surface portion 365.
In addition, a pair of grooves 3661, 3661, and 3663 are formed in the outer surface portion 366, and the field lens 340 is fitted and fixed from the Y direction side.

  The outer side surface portion 367 is a side surface portion located closest to the XZ direction side when the optical component housing 36 is viewed from the Y direction side, and is disposed at a position facing the outer surface surface portion 363. The end of the outer surface 367 on the side opposite to the Z direction is connected to the outer surface 361 as described above, and the end on the Z direction is connected to the outer surface 366. An angle adjustment mechanism 5B is disposed on the outer surface portion 367, and the reflection mirror 336 is fixed by the angle adjustment mechanism 5B.

An angle adjustment mechanism 5G is disposed on the surface on the XZ direction side of the inner side surface portion 368, and the reflection mirror 335 is fixed by the angle adjustment mechanism 5G.
As described above, among the reflection mirrors 333 to 336 constituting the color separation device 33, the reflection mirrors 334 to 336 that finally reflect each color light incident on the liquid crystal panels 341R, 341G, and 341B are the angle adjustment mechanism 5R. , 5G, 5B, and the angle is adjusted by the angle adjusting mechanisms 5R, 5G, 5B.
Hereinafter, the angle adjusting mechanism 5 will be described in detail.

[Configuration of angle adjustment mechanism]
FIG. 5 is a perspective view of the reflection mirror 335 fixed by the angle adjustment mechanism 5G as viewed from the X direction side. FIG. 6 shows the reflection mirror 335 fixed by the angle adjustment mechanism 5G from the direction opposite to the X direction. FIG. In the following description, the angle adjustment mechanisms 5R and 5B have the same configuration as the angle adjustment mechanism 5G, and therefore only the angle adjustment mechanism 5G will be described.
As shown in FIGS. 5 and 6, the angle adjustment mechanism 5G includes two pressing members 6 (6A, 6B) and three fixing members 7 (7A, 7B, 7C). Of these, the two pressing members 6 have a function of urging (pressing) the back surface (335B) of the rectangular plate-like reflecting mirror 335 that is the object of angle adjustment. The three fixing members 7 have a function of urging the reflecting surface (335A) of the reflecting mirror 335. In other words, the reflection mirror is fixed by the pressing force (biasing force) of the pressing member 6 and the urging force of the fixing member 7.
The pressing member 6 corresponds to the first urging member of the present invention, and the fixing member 7 corresponds to the second urging member of the present invention.

Specifically, the fixing members 7A and 7B are arranged side by side along the side 3352 on the opposite side to the Y direction of the surface 335A on the Z direction side of the reflection mirror 335, and the holding portion 3603 formed on the bottom surface portion 360. , 3604 is fixed by a pin P1. In addition, the fixing member 7C is disposed outside the side 3354 of the reflection mirror 335 so that a part (the bent portion 734) of the fixing member 7C biases the surface 335A of the reflection mirror 335, and holds the inner side surface portion 368. It is fixed to the portion 3686 with a pin P1.
The pressing member 6A is disposed along the side 3352 on the opposite side to the Y direction of the surface 335B on the opposite side to the Z direction of the reflection mirror 335. More specifically, the pressing member 6A is disposed at a position facing the fixing member 7A and the reflection mirror 335, and is fixed to a holding portion (not shown) of the bottom surface portion 360 by a screw S1. The pressing member 6B is disposed along the side 3351 on the Y direction side of the surface 335B of the reflecting mirror 335. More specifically, the pressing member 6B is a position substantially opposed to the fixing member 7B disposed on the surface 335A side when viewed from the Y direction side, and is a position biased by the fixing member 7C on the surface 335A. And is fixed to the holding portion 3687 of the inner side surface portion 368 with a screw S2. That is, the fixing members 7A and 7B are arranged at positions facing the pressing members 6A and 6B arranged with the reflection mirror 335 interposed therebetween as viewed from the Y direction side. Further, the pressing members 6A and 6B are arranged at diagonal positions in the surface 335B of the reflection mirror 335.
Hereinafter, the fixing member 7 and the pressing member 6 will be described in detail.

[Configuration of fixing member]
FIG. 7 is a perspective view showing the configuration of the fixing member 7, and FIG. 8 is a plan view showing the configuration of the fixing member 7.
As shown in FIGS. 7 and 8, the fixing member 7 includes two flat plate portions 71 and 72 and a protruding portion 73. Among these, each of the flat plate parts 71 and 72 is formed in a rectangular plate shape, and has a shape that intersects at a substantially right angle. The flat plate portion 71 corresponds to the second flat plate portion of the present invention, and is connected to the first edge 722 of the flat plate portion 72. A fixing hole 711 into which the pin P1 is fitted is formed in a substantially central portion of the flat plate portion 71. Further, the flat plate portion 72 corresponds to a first flat plate portion of the present invention, and a fixing hole 721 into which the pin P1 is fitted is formed at a substantially central portion of the flat plate portion 72. As a result, the fixing member 7 has the pin P1 fitted into either the fixing hole 711 or the fixing hole 721, so that either the flat plate portion 71 or the flat plate portion 72 faces in the Y direction. It is fixed to the body 36. That is, the fixing holes 711 and 721 correspond to the biasing member side fixing portion of the present invention.

The protruding portion 73 is a member protruding from an end portion (second edge 724 described later) of the flat plate portion 72 and has elasticity. The projecting portion 73 has a base end portion 731, an arc-shaped portion 732, an extending portion 733, and a bent portion 734. Among these, the base end portion 731 has a function of connecting the second edge 724 of the flat plate portion 72 and the arc-shaped portion 732. The base end portion 731 is connected to the second edge 724 at a position opposite to the flat plate portion 71 side.
The arcuate portion 732 is connected to a base end portion 731 provided at a position opposite to the flat plate portion 72 side at the second edge 724, and extends from the flat plate portion 72 to the extending direction side of the flat plate portion 71. Then, the shape extends in a circular arc shape continuously from the base end portion 731 extending in a substantially circular arc shape on the side opposite to the extending direction and on the third edge 725 side. In other words, the arc-shaped portion 732 is formed in a semicircular shape starting from the distal end portion of the base end portion 731. The extending part 733 is formed in a flat plate shape that extends continuously from the tip part of the arcuate part 732. The extending part 733 extends beyond the flat plate part 72 to which the base end part 731 is connected.

The bent portion 734 has a shape that is continuously bent from the distal end portion of the extending portion 733 toward the opposite side to the flat plate portion 72. The bent portion 734 is a portion that comes into contact with the reflection mirrors 334 to 336 and includes a first contact portion 7341 and a second contact portion 7342. Specifically, when the fixing member 7 is used as the fixing members 7 </ b> A and 7 </ b> B shown in FIG. 5, the first contact portion 7341 contacts the reflection surfaces of the reflection mirrors 334 to 336. Further, when the fixing member 7 is used as the fixing member 7C illustrated in FIG. 5, the second contact portion 7342 contacts the reflection surfaces of the reflection mirrors 334 to 336.
In other words, since the protruding portion 73 is formed in a substantially J shape, when the bent portion 734 is brought into contact with the reflecting mirrors 334 to 336 and further pushed in the direction in which the reflecting mirrors 334 to 336 are positioned, The arcuate portion 732 of the protrusion 73 is bent. As a result, the protrusion 73 and, by extension, the fixing member 7 urges the reflection mirrors 334 to 336 by a reaction force that attempts to return to the shape before the arc-shaped portion 732 is bent.

[Configuration of adjustment member]
Before describing the pressing member 6, the screws S1 and S2 for fixing the pressing member 6 will be described. Screw S1, S2 is corresponded to the adjustment member of this invention, and is provided with head part S11, S21 and axial part S12, S22. The screws S1 and S2 have a function of fixing the abutting portion 65 that abuts against the reflection mirrors 334 to 336 in the pressing member 6 in a state of being moved along the urging direction of the pressing member 6. As shown in FIGS. 5 and 6, the screws S <b> 1 and S <b> 2 are inserted into an insertion hole 621 and an insertion hole 611 of the pressing member 6, which will be described later, and are fixed to the optical component housing 36 by screws.

[Configuration of pressing member]
FIG. 9 is a perspective view illustrating the configuration of the pressing member 6, and FIG. 10 is a side view illustrating the configuration of the pressing member 6.
As shown in FIGS. 9 and 10, the pressing member 6 is formed in a substantially arc shape (substantially U-shape) extending from one end portion toward the other end portion. The pressing member 6 includes two flat plate portions 61 and 62, an arc-shaped portion 63, a restricting portion 64, and a contact portion 65. Of these, the flat plate portions 61 and 62 are each formed in a substantially rectangular plate shape and are connected by an arc-shaped portion 63. The flat plate portion 61 corresponds to an arrangement portion of the present invention, and the flat plate portion 61 is formed with an insertion hole 611 through which any of the screws S1 and S2 is inserted. The insertion hole 611 corresponds to a hole portion of the present invention, and is formed in a substantially circular shape having a diameter slightly larger than the diameter of the shaft portions S12 and S22 of the screws S1 and S2. Further, a substantially rectangular insertion hole 621 extending from the contact portion 65 side toward the arc-shaped portion 63 side is formed at a substantially central portion of the flat plate portion 62. The insertion hole 621 corresponds to a hole portion of the present invention, and screws S1 and S2 are inserted into the insertion hole 621. The inner diameter of the insertion hole is set smaller than the outer dimensions of the heads S11 and S21 of the screws S1 and S2. The screws S1 and S2 are inserted through the flat plate portion 61 of the screws S1 and S2 according to the amount of screwing with the screwing holes (see FIGS. 11 to 13) provided in the holding portion of the optical component housing 36. Since the position in the hole 611 is different, the insertion hole 611 is formed in the rectangular shape.

The arc-shaped portion 63 is formed in a substantially arc shape and has a function of connecting the flat plate portion 61 and the flat plate portion 62. Specifically, the arc-shaped portion 63 continuously extends from the base end portion of the flat plate portion 61 in an arc shape, and is connected to the base end portion of the flat plate portion 62. In other words, the arc-shaped portion 63 is formed in a semicircular shape starting from one base end portion of the flat plate portions 61 and 62. For this reason, the arc-shaped part 63 has flexibility. The width dimension of the arc-shaped portion 63 of the pressing member 6 is set to be approximately twice or more the width dimension of the arc-shaped portion 732 of the fixing member 7. Further, the arc-shaped portion 63 and the flat plate portion 62 constitute a bending portion of the present invention.
The restricting portion 64 corresponds to the extending portion of the present invention, and has a function of restricting the rotation of the pressing member 6 and the back-and-forth movement of the pressing member 6 according to the rotation of the screws S1 and S2. The restricting portion 64 is a plate-like portion that extends in the direction intersecting the flat plate portion 61 from the end of the flat plate portion 61 opposite to the side to which the arc-shaped portion 63 is connected. Such a restricting portion 64 is locked by the holding portion when assembled to the holding portion of the optical component casing 36. Thereby, rotation and back-and-forth movement of the pressing member are restricted.

The contact portion 65 is a portion connected to the opposite side of the flat plate portion 62 to which the arc-shaped portion 63 is connected, and is in contact with the back surfaces (surfaces opposite to the reflection surface) of the reflection mirrors 334 to 336. It is the part that touches. The contact portion 65 has a base portion 651 and a convex portion 652.
The base portion 651 is connected to the end portion of the flat plate portion 62 and is formed in a flat plate shape extending in a direction substantially orthogonal to the flat plate portion 62 and on the opposite direction side to the restricting portion 64. A convex portion 652 is provided at a substantially central portion of the surface 6111 on the side opposite to the flat plate portion 62 of the base portion 651. The convex portion 652 is formed in a hemispherical shape and abuts on the back surface of the reflection mirrors 334 to 336.
Thus, since the pressing member 6 is formed in a substantially U shape, the convex portion 652 of the contact portion 65 is disposed so as to face the back surface of the reflecting mirrors 334 to 336, and the screws S1 and S2 are turned. When moved, the arc-shaped portion 63 bends according to the screwing amount, and the contact portion 65 moves to the reflecting mirrors 334 to 336 side. Thereby, the convex part 652 of the contact part 65 contact | abuts to the back surface of the reflective mirrors 334-336, and presses the said surface.
Below, the change of the shape of the pressing member 6 according to the screwing amount of the screws S1 and S2 inserted through the pressing member 6 and the pressing amount will be described.

[Deformation of pressing member and change in pressing amount according to screwing amount of pressing member]
FIG. 11 is a diagram illustrating the pressing member 6A and the fixing member 7A when the screwing amount of the screw S1 is small.
As shown in FIG. 11, the pressing member 6 </ b> A and the fixing member 7 </ b> A are arranged so as to face each other with the reflection mirror 335 interposed therebetween. The screw S1 is inserted through the insertion holes 611 and 621 of the pressing member 6A, and the pressing member 6A is fixed to the holding portion of the optical component housing 36 by the screw S1. Specifically, the pressing member 6A in the state shown in FIG. 11 is fixed to the holding portion in a state where the pressing member 6A is not deformed by being pressed by the head S11 of the screw S1 (see FIGS. 9 and 10). For this reason, the screwing amount of the screw S1 (the dimension L1 of the screw S1 being screwed) is smaller than the screwing amount of the screw S1 shown in FIGS.
As shown in FIG. 11, the convex portion 652 of the contact portion 65 of the pressing member 6A is in contact with the surface 335B of the reflection mirror 335. In other words, the pressing member 6A biases the reflecting mirror 335 toward the fixed member 7A.

The pin P1 is fitted into the fixing hole 721 of the fixing member 7A, whereby the fixing member 7A is fixed to the holding portion 3603 of the optical component housing 36. Further, the bent portion 734 of the fixing member 7A is in contact with the surface 335A of the reflection mirror 335. Specifically, the first contact portion 7341 of the bent portion 734 is in contact with the surface 335A. In other words, the fixing member 7A biases the reflection mirror 335 toward the pressing member 6A.
That is, when the screwing amount of the screw S1 inserted through the pressing member 6A (height dimension L1 of the screw S1 being screwed) is in the state shown in FIG. 11, the pressing member 6A and the fixing member 7A The members 6A and 7A have substantially the same shape as the pressing member 6 and the fixing member 7 in a state where the members 6A and 7A are not fixed to the optical component casing 36. For this reason, in this state, each urging force of the pressing member 6A and the fixing member 7A acts on the reflection mirror 335 substantially equally. Therefore, in the state shown in FIG. 11, each of the pressing member 6 </ b> A and the fixing member 7 </ b> A biases the reflection mirror 335, so that the reflection mirror 335 is fixed in a state where the angle is maintained.

FIG. 12 is a view showing the pressing member 6A and the fixing member 7A in a state where the screw S1 in the state shown in FIG. 11 is further rotated to increase the screwing amount.
When the screw S1 in the state shown in FIG. 11 is further rotated, the pressing member 6A and the fixing member 7A are brought into the state shown in FIG. 12 by the screw S1. In this state, the screwing amount of the screw S1 (the dimension L2) is larger than the screwing amount of the screw S1 in the state shown in FIG. 11 (the dimension L1).
Thus, when the screw S1 is further rotated, the flat plate portion 62 of the pressing member 6A is moved toward the flat plate portion 61, and the height dimension of the pressing member 6A is reduced. Due to the movement of the screw S1, the flat plate portion 62 is pushed down by the head S11 of the screw S1 and moves in the above direction, so that the contact portion 65 moves to the reflection mirror 335 side. Thereby, the convex part 652 of the contact part 65 presses the surface 335B of the reflecting mirror 335 with an urging force (pressing force) stronger than the urging force.
On the other hand, in the state shown in FIG. 11, the urging force of the fixing member 7A and the urging force of the pressing member 6A are equal, but the urging force of the pressing member 6A ( Since the pressing force is larger than the urging force of the fixing member 7A, the reflection mirror 335 moves to the fixing member 7A side by the pressing force.

FIG. 13 is a view showing the pressing member 6A and the fixing member 7A in a state where the screw S2 in the state shown in FIG. 12 is further rotated to increase the amount of screwing.
When the screw S1 in the state shown in FIG. 12 is further rotated, the pressing member 6A and the fixing member 7A are brought into the state shown in FIG. 13 by the screw S1. In this state, the screwing amount (the above-mentioned dimension L3) of the screw S1 is larger than the screwing amount (the above-mentioned dimension L2) of the screw S1 in the state shown in FIG.
Thus, when the screw S1 is further rotated, the flat plate portion 62 of the pressing member 6A is further moved toward the flat plate portion 61, and the height dimension of the pressing member 6A is further reduced. Since the flat plate portion 62 moves in the above direction by the movement of the screw S1, the contact portion 65 further moves toward the reflection mirror 335. Thereby, the convex part 652 of the contact part 65 presses the surface 335B of the reflection mirror 335 with a stronger biasing force (pressing force).
Further, since the urging force (pressing force) of the pressing member 6A becomes larger than the urging force of the fixing member 7A due to the increase of the screwing amount of the screw S1, the reflecting mirror 335 is shown in FIG. It moves further to the fixing member 7A side than the state.

In this way, by adjusting the screwing amount of the screw S1, the pressing force of the pressing member 6A (the urging force that presses the reflecting mirror 335 by the convex portion 652) can be adjusted. Therefore, the reflecting mirror 335 is controlled according to the pressing force. Can be moved and fixed to the fixing member 7A arranged at a position facing the pressing member 6A.
In the above description, the reflecting mirror 335 has been described. However, the pressing member 6 and the fixing member 7 also operate in the same manner for the other reflecting mirrors 334 and 336. The pressing member 6B and the fixing member 7C also operate in the same manner as the pressing member 6A and the fixing member 7A, but the moving directions of the reflecting mirrors 334 to 336, that is, the moving axes (rotating axes) are different. This will be described in detail below with reference to FIG.

[Rotating axis of reflection mirror]
As described above, when the pressing member 6A changes from the state shown in FIG. 11 to the state shown in FIG. 13 by the rotation of the screw S1, the reflection mirror 335 moves in the K1 direction around the rotation axis R1 shown in FIG. To do.
Here, the surface 335A of the reflection mirror 335 is urged by the fixing members 7A, 7B, and 7C, and the surface 335B of the reflection mirror 335 is urged (pressed) by the pressing members 6A and 6B. That is, the reflection mirror 335 is supported (fixed) by three points where the first contact portion 7341 and the second contact portion 7342 of the bent portion 734 of the fixing members 7A, 7B, and 7C contact.
For this reason, when the pressing member 6A changes from the state shown in FIG. 11 to the state shown in FIG. 13 due to the rotation of the screw S1, other than the fixing member 7A disposed at a position facing the pressing member 6A with the reflection mirror 335 interposed therebetween. The reflection mirror 335 is moved in the K1 direction about the rotation axis R1 connecting the two points fixed by the fixing members 7B and 7C. Thereby, the angle in the XZ plane of the reflective mirror 335 is adjusted.

On the other hand, when the pressing member 6B changes from the state shown in FIG. 11 to the state shown in FIG. 13 by the rotation of the screw S2, the reflection mirror 335 moves in the K2 direction around the rotation axis R2 shown in FIG. As described above, the reflecting mirror 335 is supported (fixed) by the three points where the first contact portion 7341 or the second contact portion 7342 of the bent portion 734 of the fixing members 7A, 7B, and 7C contacts. When the pressing member 6B changes from the state shown in FIG. 11 to the state shown in FIG. 13 by the rotation of the screw S2, the fixing member other than the fixing member 7C disposed at a position facing the pressing member 6B with the reflection mirror 335 interposed therebetween. The reflection mirror 335 is moved in the K2 direction around the rotation axis R2 connecting the two points fixed by 7A and 7B. Thereby, the angle in the XY plane of the reflective mirror 335 is adjusted.
That is, the angle in the XZ plane and / or the XY plane of the reflection mirror 335 is adjusted by forming the rotation axis R1 and the rotation axis R2 so as to be substantially orthogonal.
Similarly to this, the angle adjustment is also performed on the reflection mirrors 334 and 336.

[Effect of the embodiment]
The projector 1 according to the present embodiment described above has the following effects.
Since the reflection mirrors 334 to 336 that are angle adjustments are urged by the pressing member 6 and the fixing member 7, they are fixed by the urging forces of the pressing member 6 and the fixing member 7. According to this, since the reflecting mirrors 334 to 336 are not fixed by an adhesive or the like, the reusability of the reflecting mirrors 334 to 336 can be improved. Moreover, since the position of the contact part 65 in the pressing member 6 can be adjusted with the screws S1 and S2, the urging force of the pressing member 6 against the reflection mirrors 334 to 336 can be varied with the screws S1 and S2. Thereby, the angles of the reflection mirrors 334 to 336 can be varied only by adjusting the screws S1 and S2. Therefore, the angle adjustment of the reflection mirrors 334 to 336 can be simplified.

  Screws S1 and S2 can be inserted into the two insertion holes 611 and 621 in the flat plate portions 61 and 62 of the pressing member 6, and the urging force of the pressing member 6 varies depending on the insertion amount (screwing amount) of the screws S1 and S2. Can be made. Accordingly, since the biasing force of the pressing member 6 changes only by operating the screws S1 and S2, the angles of the reflection mirrors 334 to 336 can be adjusted according to the biasing force of the pressing member 6 against the fixing member 7.

  When the screws S1 and S2 are inserted through the insertion holes 611 and 621 and inserted into the holding portion of the optical component housing 36, the screw heads S11 and S21 are arcuate portions in the insertion direction of the screws S1 and S2. By pressing 63, the arc-shaped portion 63 is bent, and the contact portion 65 located on the tip side of the arc-shaped portion 63 moves in a direction close to the reflection mirrors 334 to 336, so that the contact portion 65 The convex portion 652 can press the reflection mirrors 334 to 336. Therefore, the reflection mirrors 334 to 336 can be reliably pressed and the angle can be finely adjusted.

  Since the fixing holes 711 and 721 are formed in the two flat plate portions 71 and 72 constituting the fixing member 7, respectively, by inserting the pin P1 into the fixing holes 711 and 721, The desired flat plate portion can be fixed in a predetermined direction. According to this, since the fixing member 7 can be used as a fixing member having a different shape, the number of parts of the angle adjusting mechanism 5 can be reduced, and the manufacturing cost can be reduced.

  When viewed from the extending direction of the normal line of each surface of the reflection mirrors 334 to 336, among the fixing members 7A to 7C and the pressing members 6A and 6B, the fixing members 7A and 7B and the pressing members 6A and 6B serve as the reflecting mirror 335. Since they are arranged at positions substantially opposite to each other, the urging forces of the pair of pressing members 6 and the fixing member 7 can be efficiently transmitted to the reflecting mirrors 334 to 336. Accordingly, the reflection mirrors 334 to 336 after the angle adjustment using the screws S1 and S2 can be more firmly fixed in a state where the angles are maintained.

  The fixing members 7A and 7B are disposed on one side of the rectangular mirrors 334 to 336, and the pressing members 6A and 6B are disposed at diagonal positions in the plane of the reflecting mirrors 334 to 336. 6B is arrange | positioned along the edge | side facing the said edge | side. According to this, the reflecting mirrors 334 to 336 are supported by three points including two points where the fixing members 7A and 7B are disposed and one point where the pressing member 6B disposed along the opposite side is disposed. (Fixed). According to this, when the urging force (pressing force) of the pressing member 6B is changed by the rotation of the screw S2, the rotating shaft R2 connecting the two points where the fixing members 7A and 7B are arranged is used. The angle of the reflection mirrors 334 to 336 can be adjusted as the center. On the other hand, when the urging force of the pressing member 6A disposed opposite to the fixing member 7A across the reflecting mirrors 334 to 336 is changed by the rotation of the screw S1, the rotation axis R1 connecting the other two points is the center. The angle of the reflection mirrors 334 to 336 can be adjusted. Therefore, the angle of the reflection mirrors 334 to 336 can be adjusted around the two rotation axes R1 and R2, so that the angle of the reflection mirrors 334 to 336 can be adjusted more freely.

  In addition, since the angle adjustment mechanism 5 is employed in the projector 1, the angles of the reflection mirrors 334 to 336 can be freely adjusted, so that the optical axis of the light emitted from the illumination device 31 can be reliably adjusted. . Therefore, the pixel shift of the image projected from the projector 1 can be suppressed.

[Modification of Embodiment]
The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
In the above embodiment, the pressing member 6 is formed in a substantially U shape. However, the present invention is not limited to this. For example, the pressing member 6 may be S-shaped. In this case, it is only necessary to provide three insertion holes through which the screws S1 and S2 as adjustment members are inserted. According to this, the same effect as the above-mentioned embodiment can be produced.
In the above embodiment, the screws S1 and S2 are provided as the adjustment members. However, the present invention is not limited to this. For example, the adjustment member may be a pin or the like as long as the insertion amount of the adjustment member can be easily adjusted. If necessary, the adjusting member may have any shape as long as the position of the first urging member, that is, the urging force (pressing force) of the first urging member can be adjusted.

In the said embodiment, the protrusion part 73 of the fixing member 7 was formed in the substantially J shape. However, the present invention is not limited to this. For example, the protrusion 73 of the fixing member 7 may be U-shaped. That is, the protruding portion 73 may have a shape in which the bent portion 734 is connected to the end portion of the arc-shaped portion 732 without having the extending portion 733. Further, the bent portion 734 may not be provided. In short, the fixing member 7 may have any shape as long as it has a biasing force that biases the reflection mirrors 334 to 336.
In the above embodiment, the fixing member 7 includes the two flat plate portions 71 and 72. However, the present invention is not limited to this. For example, the fixing member 7 may not include the flat plate portion 71. Even in this case, the fixing member 7 can be used as the fixing members 7A and 7B.

  In the above embodiment, the reflection mirror 335 is fixed by the three fixing members 7A, 7B, and 7C and the two pressing members 6A and 6B. However, the present invention is not limited to this. For example, instead of the fixing member 7C, a coil spring having a biasing force or a plate-like elastic member may be used. Even if it is this structure, there can exist an effect similar to the said embodiment.

  In the above embodiment, the pressing members 6A and 6B are disposed at both ends of the reflecting mirror 335 on the surface 335B side, and the fixing members 7A and 7B are pressing members on the surface 335A side of the reflecting mirror 335 when viewed from the Y direction side. It was arranged at a position substantially opposite to 6A and 6B. However, the present invention is not limited to this. For example, the fixing members 7A and 7B do not have to be disposed at positions substantially facing the pressing members 6A and 6B on the surface 335A side of the reflection mirror 335 when viewed from the Y direction side. Even in this case, the reflection mirrors 334 to 336 can be fixed in a state where the angle is maintained after the angle adjustment of the reflection mirrors 334 to 336.

In the above embodiment, the reflection mirrors 334 to 336 are formed in a rectangular plate shape. However, the present invention is not limited to this. For example, the reflecting mirrors 334 to 336 may be pentagonal or more polygonal, circular, or elliptical.
In the above embodiment, the fixing members 7 </ b> A and 7 </ b> B are arranged along the side 3352 of the reflection mirror 335. However, the present invention is not limited to this. For example, the fixing members 7A and 7B may be arranged at diagonal positions in the surface 335A of the reflection mirror 335.

  In the above embodiment, the reflection mirror 335 is fixed by the two pressing members 6A and 6B and the three fixing members 7A, 7B, and 7C. However, the present invention is not limited to this. For example, the two pressing members 6A and 6B and the three fixing members 7A, 7B, and 7C may be used for fixing and adjusting other optical components such as the dichroic mirror 331.

  In the above embodiment, the reflection mirror 335 is fixed by the two pressing members 6A and 6B and the three fixing members 7A, 7B, and 7C. However, the present invention is not limited to this. For example, one more pressing member may be provided and arranged at a position facing the fixing member 7B. Even in this case, the same effects as in the above embodiment can be obtained.

  In the above embodiment, the width dimension of the arc-shaped portion 63 of the pressing member 6 is set to be approximately twice or more the width dimension of the arc-shaped portion 732 of the fixing member 7. However, the present invention is not limited to this. For example, the width dimension of the arcuate part 63 of the pressing member 6 may be set to be substantially the same as the width dimension of the arcuate part 732 of the fixing member 7. If necessary, it is sufficient that the urging force (pressing force) of the pressing member 6 is a width dimension that becomes larger than the urging force of the fixing member 7 by the rotation of the screws S1 and S2.

  In the above embodiment, the transmissive liquid crystal panel 341 (341R, 341G, 341B) is used as the light modulation device. However, the present invention is not limited to this. For example, instead of the transmissive liquid crystal panel 341 (341R, 341G, 341B), a reflective liquid crystal panel may be used. In this case, color separation and color synthesis may be executed by the color synthesis device 344 without providing the color separation device 33.

In the above embodiment, the projector 1 includes the three liquid crystal panels 341 (341R, 341G, and 341B), but the present invention is not limited to this. That is, the present invention can also be applied to a projector using two or less or four or more liquid crystal panels.
Further, a DMD (digital micromirror device) or the like may be used instead of the liquid crystal panel.

In the above embodiment, the projector 1 includes the pair of light source devices 31A and 31B. However, the present invention is not limited to this. For example, the number of light source devices may be one or four.
In the above embodiment, the image forming apparatus 3 is arranged as shown in FIG. However, the present invention is not limited to this. For example, the image forming apparatus may be arranged in a substantially L shape or a substantially U shape.

  In the above embodiment, the angle adjustment mechanism 5 is applied to the projector 1. However, the present invention is not limited to this. For example, you may employ | adopt the said angle adjustment mechanism in the headlamp etc. of a motor vehicle. That is, the angle adjustment mechanism can be applied to any device that adjusts the angle of the plate-like body.

  DESCRIPTION OF SYMBOLS 1 ... Projector, 31 ... Illuminating device (light source), 334, 335, 336 ... Reflection mirror (object, optical element), 3352 ... Side, 335A ... Surface, 335B ... Surface, 341 ... Liquid crystal panel (light modulation device), 344 ... color composition device, 35 ... projection optical device, 36 ... optical component casing (mounting member), 5, 5B, 5G, 5R ... angle adjusting mechanism, 6, 6A, 6B ... pressing member (first biasing member) , 61 ... Flat plate portion (arrangement portion), 611 ... Insertion hole (hole portion), 62 ... Flat plate portion (curved portion), 621 ... Insertion hole (hole portion), 63 ... Arc-shaped portion (curved portion), 64 ... Restriction part (extension part), 65 ... contact part, 7, 7A, 7B, 7C ... fixing member (second urging member), 71 ... flat plate part (first flat plate part), 711 ... fixing hole (second) Urging member side fixing portion), 72 ... flat plate portion (second flat plate portion), 721 ... fixing hole (second urging member side fixing portion) , 722 ... 1st edge, 724 ... 2nd edge, 725 ... 3rd edge, 732 ... Arc-shaped part, 734 ... Bending part, S1, S2 ... Screw (adjustment member), S11, S21 ... Head , S12, S22... Shaft portion.

Claims (8)

An angle adjustment mechanism for adjusting an attachment angle of an object attached to an attachment member,
A first biasing member fixed to the mounting member and biasing one surface of the object;
A second biasing member fixed to the mounting member and biasing the other surface facing the one surface;
An angle adjusting mechanism comprising: an adjusting member that fixes the first urging member to the mounting member and adjusts an urging force that urges the one surface. The angle adjustment mechanism according to claim 1,
The first biasing member is
An arrangement portion disposed on the attachment member;
An extending part extending in a direction intersecting with the arrangement part from one end side of the arrangement part;
A curved portion having a flexibility that extends from the other end side of the arrangement portion in a direction opposite to the extending direction of the extension portion, and that can be moved toward and away from the arrangement portion side along the extension direction. When,
A contact portion that contacts the object,
The contact portion is located on the distal end side of the bending portion,
The arrangement portion and the bending portion each have a hole portion through which the adjustment member is inserted. The angle adjusting mechanism according to claim 2,
The adjustment member is a screw having a head portion and a shaft portion,
The angle adjustment mechanism according to claim 1, wherein an inner diameter of the hole of the curved portion is smaller than an outer diameter of the head. In the angle adjustment mechanism according to any one of claims 1 to 3,
The second urging member has a first flat plate portion and a second flat plate portion that intersect with each other,
Each of the first flat plate portion and the second flat plate portion has a second urging member side fixing portion that can be fixed to the mounting member,
The first flat plate portion is
A first edge connected to the second flat plate portion;
A second edge and a third edge respectively intersecting the first edge;
After extending from the position opposite to the second flat plate portion side in the second edge to the extending direction side of the second flat plate portion from the first flat plate portion, the direction opposite to the extending direction is obtained. And an arcuate part extending in a substantially arcuate shape on the side of the third edge,
An angle adjusting mechanism comprising: a bent portion that bends at a tip portion of the arcuate portion and contacts the object. In the angle adjustment mechanism according to any one of claims 1 to 4,
A plurality of sets of the first biasing member and the second biasing member;
When viewed from the extending direction of the normal of the one surface or the other surface,
An angle adjustment mechanism characterized in that at least one set of the first urging member and the second urging member is arranged at a position substantially opposed across the object. In the angle adjustment mechanism according to claim 5,
The object is formed in a rectangular plate shape,
The second urging member is disposed along one side of the object,
The angle adjusting mechanism, wherein the first urging member is disposed at a diagonal position in the plane of the object. In the angle adjustment mechanism according to any one of claims 1 to 6,
The angle adjusting mechanism, wherein the object is an optical element. A light source;
A light modulation device for modulating light emitted from the light source;
A projection optical device for projecting light modulated by the light modulation device;
A housing for optical components as the mounting member to which the optical element is mounted;
An angle adjustment mechanism according to claim 7.

Images