JP6125240B2

JP6125240B2 - Curved mirror mounting structure

Info

Publication number: JP6125240B2
Application number: JP2013008244A
Authority: JP
Inventors: 貴山口
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-21
Filing date: 2013-01-21
Publication date: 2017-05-10
Anticipated expiration: 2033-01-21
Also published as: JP2014139608A

Description

本発明は、曲面ミラーの取付構造に関する。 The present invention relates to a curved mirror mounting structure.

以前より、投射光学系において、最も出射面側に位置する光学素子に曲面ミラーを設置し、画像光を反射することで、投射距離の短縮と広角化を実現していた。
この際、曲面ミラーの性質上、曲面ミラーの反射面の角度や位置の微小のズレが被投射面上に投射される投射映像の結像性能に大きく影響を与えるため、投射光学系をプロジェクターへ組み込む際の曲面ミラーの反射面の角度及び位置の精密な調整が必須であった。 In the past, in projection optical systems, a curved mirror was installed on the optical element located closest to the exit surface, and the image light was reflected to reduce the projection distance and widen the angle.
At this time, because of the nature of the curved mirror, a slight deviation in the angle and position of the reflecting surface of the curved mirror greatly affects the imaging performance of the projected image projected on the projection surface. Precise adjustment of the angle and position of the reflecting surface of the curved mirror during installation was essential.

例えば、曲面ミラーの反射面外の外周面や背面を曲面ミラーの保持部材により調整可能に三点支持をするフローティング機構などがある（特許文献１参照）。また、曲面ミラーを第１保持部材で保持し、第１保持部材を第２保持部材で保持を行い、第１保持部材に対して曲面ミラーを光軸と直交する第１軸を回動軸にして回動させ、第２保持部材に対して第１保持部材を光軸及び第１軸と直交する第２軸を回動軸にして回動させることにより、曲面ミラーの角度を微調整する機構もある（特許文献２参照）。 For example, there is a floating mechanism that supports a three-point support so that the outer peripheral surface and the back surface of the curved mirror outside the reflecting surface can be adjusted by a holding member of the curved mirror (see Patent Document 1). In addition, the curved mirror is held by the first holding member, the first holding member is held by the second holding member, and the curved mirror is set to the first holding member with the first axis orthogonal to the optical axis as the rotation axis. Mechanism for finely adjusting the angle of the curved mirror by rotating the first holding member with respect to the second holding member about the optical axis and a second axis orthogonal to the first axis as a rotation axis. There is also (refer patent document 2).

特開２００２−２２８９０５号公報JP 2002-228905 A 特開２０１１−５９４５９号公報JP 2011-59459 A

しかし、精密な調整を施したとしても、外部からの衝撃により外装カバーや曲面ミラーの設置面が撓んでしまうと、曲面ミラーの反射面の角度及び位置に狂いが生じてしまい、それが結像性能に悪影響を与える可能性があった。 However, even if precise adjustments are made, if the installation surface of the exterior cover or curved mirror bends due to an external impact, the angle and position of the reflecting surface of the curved mirror will be distorted, which forms an image. The performance could be adversely affected.

本発明の課題は、外装カバーに外部から衝撃が加えられて変形したとしても、曲面ミラー及び保持部材に外力が伝わらないようにして、保持部材による曲面ミラーの角度調整が狂わないようにすることである。 An object of the present invention is to prevent external force from being transmitted to the curved mirror and the holding member even if the exterior cover is deformed by an external impact, so that the angle adjustment of the curved mirror by the holding member is not distorted. It is.

以上の課題を解決するため、請求項１に記載の発明は、
結像光学系から第１の出射方向へ出射された画像光を、第２の出射方向へ反射する曲面ミラーと、
前記曲面ミラーを保持するミラー保持部材と、
前記ミラー保持部材を介して前記曲面ミラーの反射面の角度を調整する角度調整機構と、
前記結像光学系を内蔵する鏡筒と、を備える投射光学系において、
前記ミラー保持部材を一端に取り付けて、前記鏡筒の投射側の端部に他端が固定される固定部材と、
前記鏡筒の投射側の端部に他端が固定されて、前記結像光学系の一部、曲面ミラー、ミラー保持部材、及び固定部材を収納する外装カバーと、を備え、
前記曲面ミラー、ミラー保持部材、及び固定部材を、前記外装カバーと非接触状態とした、曲面ミラーの取付構造を特徴とする。 In order to solve the above problems, the invention described in claim 1
A curved mirror that reflects image light emitted from the imaging optical system in the first emission direction in the second emission direction;
A mirror holding member for holding the curved mirror;
An angle adjusting mechanism for adjusting the angle of the reflecting surface of the curved mirror via the mirror holding member;
In a projection optical system comprising a lens barrel containing the imaging optical system,
The mirror holding member is attached to one end, and the other end is fixed to the projection side end of the lens barrel;
The other end is fixed to the projection side end of the barrel, and includes a part of the imaging optical system, a curved mirror, a mirror holding member, and an exterior cover that houses the fixing member,
The curved mirror mounting structure is characterized in that the curved mirror, the mirror holding member, and the fixing member are not in contact with the exterior cover.

さらに、請求項１に記載の発明は、
前記外装カバーの内部に沿わせた形状で、前記固定部材よりも外周側に取り付けられる補強用部材を備え、
前記補強用部材の外周縁が、前記外装カバーの上側カバーと下側カバーの合わせ部内周面の溝部に係合されていることを特徴とする。 Furthermore, the invention of claim 1
In a shape along the inside of the exterior cover, provided with a reinforcing member attached to the outer peripheral side than the fixed member ,
An outer peripheral edge of the reinforcing member is engaged with a groove portion of the inner peripheral surface of the mating portion of the upper cover and the lower cover of the exterior cover .

本発明によれば、外装カバーに外部から衝撃が加えられて変形したとしても、曲面ミラー及び保持部材に外力が伝わらず、保持部材による曲面ミラーの角度調整が狂わない。
また、補強用部材は、固定部材及び曲面ミラーの各調整機構及び保持機構とは接触しておらず、外装カバーからの外力を鏡筒へ直接伝達して、固定部材及び曲面ミラーの各調整機構及び保持機構への影響を抑制することができる。
さらに、補強用部材により、外装カバーの歪みを抑制することができる。 According to the present invention, even if an external impact is applied to the exterior cover and deformed, external force is not transmitted to the curved mirror and the holding member, and the angle adjustment of the curved mirror by the holding member does not go wrong.
Further, the reinforcing member is not in contact with the adjusting mechanism and the holding mechanism of the fixing member and the curved mirror, and directly transmits the external force from the exterior cover to the lens barrel, so that the adjusting mechanism of the fixing member and the curved mirror is provided. And the influence on the holding mechanism can be suppressed.
Furthermore, distortion of the exterior cover can be suppressed by the reinforcing member.

本発明を適用した曲面ミラーの調整装置の一実施形態の構成を示すもので、曲面ミラーと第１保持部材（ミラー保持部材）の関係を曲面ミラー側から見た分解斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS The structure of one Embodiment of the curved mirror adjustment apparatus to which this invention is applied is shown, It is the disassembled perspective view which looked at the relationship between a curved mirror and a 1st holding member (mirror holding member) from the curved mirror side. 図１と逆に第１保持部材側から見た図である。It is the figure seen from the 1st holding member side contrary to FIG. 図１及び図２の曲面ミラーと第１保持部材を結合して第２保持部材（ミラー保持部材）との関係を示すもので、第１保持部材側から見た斜視図（ａ）と、その反対側から見た図（ｂ）である。The curved mirror of FIG.1 and FIG.2 and a 1st holding member are couple | bonded, and the relationship with a 2nd holding member (mirror holding member) is shown, The perspective view (a) seen from the 1st holding member side, It is the figure (b) seen from the other side. 図３の曲面ミラーと第１保持部材及び第２保持部材を結合した状態を示すもので、調整用ねじ側から見た斜視図（ａ）と、その反対側から見た図（ｂ）である。FIG. 4 is a perspective view (a) seen from the adjustment screw side and a view (b) seen from the opposite side, showing a state where the curved mirror of FIG. 3 and the first holding member and the second holding member are coupled. . 図４の曲面ミラーと第１保持部材及び第２保持部材と固定部材の関係を示すもので、固定部材側から見た斜視図（ａ）と、その反対側から見た図（ｂ）である。FIG. 5 is a perspective view (a) seen from the fixed member side and a view (b) seen from the opposite side, showing the relationship between the curved mirror of FIG. 4 and the first holding member and the second holding member and the fixing member. . 図５の曲面ミラーと第１保持部材及び第２保持部材と固定部材と冶具部材の関係を示すもので、冶具部材側から見た斜視図（ａ）と、その反対側から見た図（ｂ）である。FIG. 5 shows a relationship between the curved mirror, the first holding member, the second holding member, the fixing member, and the jig member in FIG. 5, a perspective view (a) viewed from the jig member side, and a view (b) viewed from the opposite side. ). 図６の曲面ミラーと第１保持部材及び第２保持部材と固定部材と冶具部材の結合状態を示すもので、冶具部材側から見た斜視図（ａ）と、その反対側から見た図（ｂ）である。6 is a perspective view (a) seen from the jig member side, and a view seen from the opposite side (a), showing the coupled state of the curved mirror, the first holding member, the second holding member, the fixing member, and the jig member of FIG. b). 曲面ミラーと第１保持部材の関係を示すもので、背面側から見た模式図（ａ）と、その中央縦断面図（ｂ）である。The relationship between a curved mirror and a 1st holding member is shown, and is the schematic diagram (a) seen from the back side, and its center longitudinal cross-sectional view (b). 曲面ミラーと第１保持部材の関係を示すもので、前面側から見た模式図（ａ）と、その中央縦断面図（ｂ）である。The relationship between a curved mirror and a 1st holding member is shown, and is the schematic diagram (a) seen from the front side, and its center longitudinal cross-sectional view (b). 第２保持部材に対する第１保持部材の関係を示す要部縦断側面図である。It is a principal part vertical side view which shows the relationship of the 1st holding member with respect to a 2nd holding member. 固定部材に対する第２保持部材の関係を示す要部縦断側面図である。It is a principal part vertical side view which shows the relationship of the 2nd holding member with respect to a fixing member. 鏡筒との関係を示す斜視図である。It is a perspective view which shows the relationship with a lens-barrel. 外装カバーとの関係を示すもので、外装カバーを中央で破断して示した図である。It is a figure which shows the relationship with an exterior cover, and fractured | ruptured and showed the exterior cover in the center. 鏡筒に外装カバーを設けた状態の平面図である。It is a top view of the state which provided the exterior cover in the lens-barrel. 図１４の矢印Ｄ−Ｄ線に沿った断面図である。It is sectional drawing along the arrow DD line of FIG. 図１４の矢印Ｅ−Ｅ線に沿った断面図である。It is sectional drawing along the arrow EE line of FIG.

以下、図を参照して本発明を実施するための最良の形態を詳細に説明する。
（実施形態）
＜曲面ミラーの調整装置＞
図１及び図２は本発明を適用した曲面ミラーの調整装置の一実施形態の構成として曲面ミラー１とミラー保持部材の第１保持部材１１の関係を示すもので、図３及び図４はさらにミラー保持部材の第２保持部材１２との関係を示し、図５はさらに固定部材２１との関係を示し、図６及び図７はさらに冶具部材３１との関係を示している。 Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
(Embodiment)
<Curved surface mirror adjustment device>
FIG. 1 and FIG. 2 show the relationship between the curved mirror 1 and the first holding member 11 of the mirror holding member as a configuration of an embodiment of the curved mirror adjusting apparatus to which the present invention is applied. FIG. 3 and FIG. The relationship between the mirror holding member and the second holding member 12 is shown, FIG. 5 further shows the relationship with the fixing member 21, and FIGS. 6 and 7 further show the relationship with the jig member 31.

そして、図８及び図９は曲面ミラー１と第１保持部材１１の関係を模式的に示すもので、図１０は第２保持部材１２に対する第１保持部材１１の関係を示し、図１１は固定部材２１に対する第２保持部材１２の関係を示している。 8 and 9 schematically show the relationship between the curved mirror 1 and the first holding member 11, FIG. 10 shows the relationship of the first holding member 11 with respect to the second holding member 12, and FIG. The relationship of the 2nd holding member 12 with respect to the member 21 is shown.

「前提」
始めに、画像調整素子からの画像光を屈折光学素子から構成される結像光学系へ入射し、結像光学系から出射した光線を曲面ミラー１の反射面で反射することにより被投射面へ画像光を拡大投射する投射光学系において、図１に示すように、結像光学系の光線をＺ軸、画像調整素子の画像中心から出射した光線の軌跡の存在する平面内におけるＺ軸と直交する軸をＹ軸、Ｚ軸及びＹ軸とそれぞれ直交する軸をＸ軸と規定し、各軸と平行な方向をそれぞれＺ軸方向、Ｙ軸方向、Ｘ軸方向と規定する。 "Assumptions"
First, image light from the image adjusting element is incident on an image forming optical system composed of refractive optical elements, and a light beam emitted from the image forming optical system is reflected by the reflecting surface of the curved mirror 1 to the projection surface. In the projection optical system for enlarging and projecting image light, as shown in FIG. 1, the light beam of the imaging optical system is orthogonal to the Z axis and the Z axis in the plane where the locus of the light beam emitted from the image center of the image adjustment element exists. The axis to be defined is defined as the Y axis, the axis orthogonal to the Z axis and the Y axis is defined as the X axis, and the directions parallel to the respective axes are defined as the Z axis direction, the Y axis direction, and the X axis direction, respectively.

また、投射光学系を光軸が地面と平行となるように地面に設置した場合において、Ｚ軸方向において、画像調整素子側を前側、被投射面側を後側と規定し、Ｘ軸方向において、前側から後側を見た場合の左右をそれぞれ左側、右側と規定して、Ｙ軸方向において、前側から後側を見た場合の上下をそれぞれ上側、下側と規定し、左右方向はＸ軸方向、上下方向はＹ軸方向、前後方向はＺ軸方向とそれぞれ対応する。 When the projection optical system is installed on the ground so that the optical axis is parallel to the ground, the image adjustment element side is defined as the front side and the projection surface side is defined as the rear side in the Z-axis direction. When the front side is viewed from the rear side, the left and right sides are defined as the left side and the right side, respectively. In the Y-axis direction, the top and bottom when the rear side is viewed from the front side are defined as the upper side and the lower side, respectively. The axial direction and the vertical direction correspond to the Y-axis direction, and the front-rear direction corresponds to the Z-axis direction.

曲面ミラー１は、非円形の曲線を回転軸にＺ軸を用いて回転させた際に形成される非球面のうち、鏡軸であるＺ軸上の面を含まない一部の面を用いた形状を有しており、結像光学系の光軸及び曲面ミラー１の鏡軸は共軸である。 The curved mirror 1 uses a part of an aspheric surface formed by rotating a non-circular curve with the Z axis as a rotation axis and does not include a surface on the Z axis that is a mirror axis. The optical axis of the imaging optical system and the mirror axis of the curved mirror 1 are coaxial.

「曲面ミラー」
図１及び図２に示すように、曲面ミラー１の反射面外の外周面のＸ軸と平行な第１軸線上に、左右一箇所ずつ溝状の第１係合部１ａが形成されている。この第１係合部１ａは、曲面ミラー１の前側から後側へ向かって溝が形成され、反射面側は開放されている。 "Curved mirror"
As shown in FIG. 1 and FIG. 2, groove-shaped first engaging portions 1 a are formed on the first axis parallel to the X axis on the outer peripheral surface outside the reflecting surface of the curved mirror 1, one on each side. . In the first engagement portion 1a, a groove is formed from the front side to the rear side of the curved mirror 1, and the reflection surface side is open.

曲面ミラー１の下端部側には、軸心がＹ軸方向に向き、かつＺ軸と直交する突起部１ｂが形成されている。この突起部１ｂは、前後方向に貫通した穴部１ｃを有している。
また、曲面ミラー１の上端部側には、軸心がＹ軸方向に向い、かつＺ軸と直交する突起部１ｄが形成されている。 On the lower end side of the curved mirror 1, a projection 1b whose axis is oriented in the Y-axis direction and orthogonal to the Z-axis is formed. The protrusion 1b has a hole 1c penetrating in the front-rear direction.
Further, on the upper end portion side of the curved mirror 1, a projection 1d whose axis is directed in the Y-axis direction and orthogonal to the Z-axis is formed.

「第１保持部材」
曲面ミラー１の外周側には、図１及び図２に示すように、第１保持部材１１が配置されている。この第１保持部材１１は、内周側に曲面ミラー１を保持可能に形成されている。
第１保持部材１１には、曲面ミラー１の第１係合部１ａに対応する位置に、左右方向に貫通した貫通孔１１ａが形成されている。この左右の貫通孔１１ａには、軸心が各々Ｘ軸と平行な第１軸線上にある軸状部材の第１被係合部材２がそれぞれ嵌め込まれている。第１係合部１ａは第１被係合部材２と係合することにより、第１保持部材１１に第１軸線を回動軸として回動可能に保持されている。 "First holding member"
As shown in FIGS. 1 and 2, a first holding member 11 is disposed on the outer peripheral side of the curved mirror 1. The first holding member 11 is formed to hold the curved mirror 1 on the inner peripheral side.
The first holding member 11 is formed with a through hole 11a penetrating in the left-right direction at a position corresponding to the first engaging portion 1a of the curved mirror 1. In the left and right through-holes 11a, first engaged members 2 of shaft-like members each having an axial center on a first axis parallel to the X axis are fitted. The first engaging portion 1a is held by the first holding member 11 so as to be rotatable about the first axis as a rotation axis by engaging with the first engaged member 2.

また、一方の第１被係合部材２と第１保持部材１１との間にはスプリングワッシャ３が挿入されている。このスプリングワッシャ３により曲面ミラー１は一方の第１被係合部材２と共に第１保持部材１１の他方に押し付けられている。
第１保持部材１１には、曲面ミラー１の突起部１ｂに対応する位置に突起部１１ｂが形成されている。この突起部１１ｂには、前後方向に貫通しかつ前側の開口が狭くねじ穴状である座ぐり形状の穴部１１ｃが形成されている。そして、曲面ミラー１の穴部１ｃと第１保持部材１１の穴部１１ｃには、後側から調整用ねじ４が挿入されて、穴部１１ｃのねじ穴部と螺合している。また、穴部１１ｃの内部には、圧縮バネ５が後側から挿入されている。 A spring washer 3 is inserted between the first engaged member 2 and the first holding member 11. The curved washer 1 is pressed against the other of the first holding members 11 together with the first engaged member 2 by the spring washer 3.
On the first holding member 11, a protrusion 11 b is formed at a position corresponding to the protrusion 1 b of the curved mirror 1. The projection 11b is formed with a counterbore-shaped hole 11c that penetrates in the front-rear direction and has a narrow opening on the front side and has a screw hole shape. An adjustment screw 4 is inserted into the hole 1c of the curved mirror 1 and the hole 11c of the first holding member 11 from the rear side, and is screwed into the screw hole of the hole 11c. A compression spring 5 is inserted into the hole 11c from the rear side.

そして、第１保持部材１１には、曲面ミラー１の突起部１ｄに対応する位置に、位置調整用溝部１１ｄが形成されている。この位置調整用溝部１１ｄは、左右方向の溝幅が突起部１ｄの直径よりも大きく、前後方向の溝の深さが突起部１ｄの直径とほぼ等しくなっている。そして、第１保持部材１１の後側から突起部１ｄを位置調整用溝部１１ｄへ挿入した後、位置調整用溝部１１ｄの後側からビス６で固定される板バネ７により、突起部１ｄを位置調整用溝部１１ｄの底部である前側の壁面へ押し付けている。 In the first holding member 11, a position adjusting groove 11 d is formed at a position corresponding to the protrusion 1 d of the curved mirror 1. The position adjusting groove 11d has a groove width in the left-right direction larger than the diameter of the protrusion 1d, and the depth of the groove in the front-rear direction is substantially equal to the diameter of the protrusion 1d. Then, after the protrusion 1d is inserted into the position adjusting groove 11d from the rear side of the first holding member 11, the protrusion 1d is positioned by the leaf spring 7 fixed with the screw 6 from the rear side of the position adjusting groove 11d. It is pressed against the front wall surface which is the bottom of the adjusting groove 11d.

第１保持部材１１の上端部には、左右方向に離間した位置に二つの板バネ８の一端がビス９でそれぞれ固定されている。この板バネ８の他端は、第１保持部材１１の前側端部から前側へ突き出しており、第１保持部材１１内部の曲面ミラー１の外周部の上端部を付勢している。 At the upper end of the first holding member 11, one end of two leaf springs 8 is fixed with screws 9 at positions separated in the left-right direction. The other end of the leaf spring 8 projects forward from the front end portion of the first holding member 11 and biases the upper end portion of the outer peripheral portion of the curved mirror 1 inside the first holding member 11.

よって、図８及び図９に示すように、曲面ミラー１を第１保持部材１１に対して第１被係合部材２を介して保持した状態で調整ねじ４を調整することにより、曲面ミラー１を第１保持部材１１に対して第１軸線（Ｘ）を回転軸として回動可能とした第１角度調整機構Ａ１を構成している。この第１角度調整機構Ａ１により、曲面ミラー１の反射面の角度調整及び固定が可能となっている。 Therefore, as shown in FIGS. 8 and 9, the curved mirror 1 is adjusted by adjusting the adjustment screw 4 while holding the curved mirror 1 with respect to the first holding member 11 via the first engaged member 2. The first angle adjusting mechanism A1 is configured to be rotatable with respect to the first holding member 11 about the first axis (X) as a rotation axis. By this first angle adjustment mechanism A1, the angle adjustment and fixing of the reflection surface of the curved mirror 1 are possible.

また、スプリングワッシャ３によりＸ軸方向のガタツキを抑制し、板バネ７により曲面ミラー１の第１被係合部材２からの脱落及びＺ軸方向のガタツキを抑制し、板バネ８によりＹ軸方向のガタツキを抑制した第１姿勢保持機構Ｂ１を構成している。 Further, the spring washer 3 suppresses backlash in the X-axis direction, the leaf spring 7 suppresses the fall of the curved mirror 1 from the first engaged member 2 and backlash in the Z-axis direction, and the leaf spring 8 suppresses the backlash in the Y-axis direction. 1st attitude | position holding mechanism B1 which suppressed this rattling is comprised.

さらに、第１保持部材１１の左右方向の外周側の両側面には、延設部１１ｅが一つずつ形成されている。この延設部１１ｅには、上下方向に貫通し、左右方向に比べて前後方向に口径が大きくなった長穴状の穴部１１ｆが形成されている。
そして、２つの延設部１１ｅの後端部には、下方向に延設された延設部１１ｇがそれぞれ一つずつ形成されている。この延設部１１ｇには、Ｚ軸方向に貫通した穴部１１ｈが形成されている。 Furthermore, one extending portion 11e is formed on each side surface of the first holding member 11 on the outer peripheral side in the left-right direction. The extended portion 11e is formed with an elongated hole portion 11f that penetrates in the vertical direction and has a larger diameter in the front-rear direction than in the left-right direction.
One extending portion 11g extending downward is formed at each rear end of the two extending portions 11e. The extending portion 11g is formed with a hole portion 11h penetrating in the Z-axis direction.

また、第１保持部材１１の上端部には、調整用穴部１１ｉが形成されている。この調整用穴部１１ｉの中心軸は、Ｚ軸と直交するＹ軸方向にあり、中心軸とＺ軸の交点は曲面ミラー１の前側の表面付近で結ばれている。 An adjustment hole 11 i is formed at the upper end of the first holding member 11. The central axis of the adjustment hole portion 11i is in the Y-axis direction orthogonal to the Z-axis, and the intersection of the central axis and the Z-axis is connected near the front surface of the curved mirror 1.

「第２保持部材」
第１保持部材１１の背面側には、図３に示すように、第２保持部材１２が配置されている。この第２保持部材１２は、内周側に曲面ミラー１を保持した第１保持部材１１を保持可能に形成されている。
第２保持部材１２には、第１保持部材１１の穴部１１ｆに対応する位置に、左右一つずつの固定用ねじ穴部１２ｆが形成されている。この固定用ねじ穴部１２ｆは、第２保持部材１２の端部上に突出した突出部１２ｅのＹ軸方向に向いた軸心に形成されている。
固定用ねじ１３を穴部１１ｆに挿入して固定用ねじ穴部１２ｆに螺合することにより、第２保持部材１２に対して第１保持部材１１の移動を制限している。 "Second holding member"
As shown in FIG. 3, the second holding member 12 is disposed on the back side of the first holding member 11. The second holding member 12 is formed to be able to hold the first holding member 11 holding the curved mirror 1 on the inner peripheral side.
The second holding member 12 has one fixing screw hole portion 12f on each of the left and right sides at a position corresponding to the hole portion 11f of the first holding member 11. The fixing screw hole portion 12f is formed at the axial center of the protruding portion 12e protruding on the end portion of the second holding member 12 in the Y-axis direction.
The movement of the first holding member 11 is restricted with respect to the second holding member 12 by inserting the fixing screw 13 into the hole portion 11f and screwing it into the fixing screw hole portion 12f.

なお、固定用ねじ１３で結合する際には、スプリングワッシャ１４と平ワッシャ１５を先に固定用ねじ１３に嵌め込み、第１保持部材１１と第２保持部材１２の間に平ワッシャ１６を挟んでから、固定用ねじ１３を固定用ねじ穴１２ｆに螺合する。 When connecting with the fixing screw 13, the spring washer 14 and the flat washer 15 are first fitted into the fixing screw 13, and the flat washer 16 is sandwiched between the first holding member 11 and the second holding member 12. Then, the fixing screw 13 is screwed into the fixing screw hole 12f.

そして、第２保持部材１２には、第１保持部材１１の穴部１１ｈに対応する位置に、左右一つずつの穴部１２ｈが形成されている。この穴部１２ｈは、後側の開口の口径は広くなっているが、前側の開口の口径は小さくなり、ねじ穴状である座ぐり形状になっている。また、穴部１２ｈには、図１０に示すように、後側から圧縮バネ１８が挿入されている。 The second holding member 12 is formed with one left and right hole 12 h at a position corresponding to the hole 11 h of the first holding member 11. The hole 12h has a large opening diameter on the rear side, but a small opening diameter on the front side, and has a counterbore shape that is a screw hole shape. Further, as shown in FIG. 10, a compression spring 18 is inserted into the hole 12h from the rear side.

図４に示すように、後側から調整用ねじ１７を穴部１１ｈ及び圧縮バネ１８、穴部１２ｈに挿入し、穴部１２ｈのねじ穴部に調整用ねじ１７を螺合する。 As shown in FIG. 4, the adjusting screw 17 is inserted into the hole portion 11h, the compression spring 18, and the hole portion 12h from the rear side, and the adjusting screw 17 is screwed into the screw hole portion of the hole portion 12h.

また、第２保持部材１２の後端部には、穴部１２ｈと左右方向では同軸上に存在し、穴部１２ｈよりも曲面ミラー１の光軸に近づいた位置に、二つの調整用治具固定部１２ｊが形成されている。 In addition, two adjustment jigs are located at the rear end of the second holding member 12 coaxially with the hole 12h in the left-right direction and closer to the optical axis of the curved mirror 1 than the hole 12h. A fixed portion 12j is formed.

よって、図６及び図７に示すように、調整用治具固定部１２ｊに背面から治具部材３１を一対の冶具固定用ねじ３２により固定し、治具部材３１に形成された突起部３１ｉを第１保持部材１１に形成された調整用穴部１１ｉに係合することにより、第１保持部材１１は調整用穴部１１ｉのＹ軸と平行な中心軸を回動軸として回動可能でかつ平行移動が規制される。 Therefore, as shown in FIGS. 6 and 7, the jig member 31 is fixed to the adjustment jig fixing portion 12j from the back by a pair of jig fixing screws 32, and the projection 31i formed on the jig member 31 is fixed. By engaging with the adjustment hole 11i formed in the first holding member 11, the first holding member 11 is rotatable about a central axis parallel to the Y axis of the adjustment hole 11i as a rotation axis, and Translation is restricted.

このため、図１０に示すように、調整用ねじ１７により第１保持部材１１を第２保持部材１２に対して第２軸線（Ｙ）を回転中心とした角度調整を行う第２角度調整機構Ａ２を構成している。 For this reason, as shown in FIG. 10, the second angle adjusting mechanism A <b> 2 that adjusts the angle of the first holding member 11 with respect to the second holding member 12 with the second axis (Y) as the rotation center by the adjusting screw 17. Is configured.

また、曲面ミラー１の反射面の角度を調整してから固定用ねじ１３を締めることにより、調整後の姿勢を保持することが可能となる第２姿勢保持機構Ｂ２を構成している。 In addition, the second posture holding mechanism B2 that can hold the adjusted posture by adjusting the angle of the reflection surface of the curved mirror 1 and then tightening the fixing screw 13 is configured.

ここで、治具部材３１は第１保持部材１１を第２保持部材１２に対して調整を完了した後に外しても良いし、そのまま補強部材として残しておいてもよい。 Here, the jig member 31 may be removed after the first holding member 11 has been adjusted with respect to the second holding member 12, or may be left as a reinforcing member.

さらに、第２保持部材１２には、図３に示すように、前後方向において、突出部１２ｅと同軸上にあり、かつ突出部１２ｅよりも前側に離間した位置に、左右１つずつの穴部１２ｋが形成されている。この穴部１２ｋは、上下方向に貫通し、かつ前後方向に比べて左右方向の口径が大きくなった長穴状になっている。 Further, as shown in FIG. 3, the second holding member 12 has one hole on each of the left and right sides at a position that is coaxial with the projecting portion 12 e and spaced forward from the projecting portion 12 e in the front-rear direction. 12k is formed. The hole portion 12k has a long hole shape that penetrates in the vertical direction and has a larger diameter in the left-right direction than in the front-rear direction.

また、第２保持部材１２の穴部１２ｋの形成されている平面部１２ｍは、その左右方向に光軸から離間した辺縁部に垂直で下方向に延びた平面部１２ｎを有している。この平面部１２ｎには、左右方向において、穴部１２ｋと同軸上にあり、かつ左右方向に貫通した調整用ねじ穴部１２ｐが形成されている。 Further, the flat surface portion 12m in which the hole portion 12k of the second holding member 12 is formed has a flat surface portion 12n extending in the downward direction perpendicular to the edge portion spaced from the optical axis in the left-right direction. The planar portion 12n is formed with an adjusting screw hole portion 12p that is coaxial with the hole portion 12k in the left-right direction and penetrates in the left-right direction.

こうして、反射面の角度及び位置を調整後に固定可能に保持している曲面ミラー１及び第１保持部材１１、第２保持部材１２を組み合わせて反射面保持機構とする。 In this way, the curved mirror 1, the first holding member 11, and the second holding member 12 that are fixedly held after adjusting the angle and position of the reflecting surface are combined to form a reflecting surface holding mechanism.

「固定部材」
以上の反射面保持機構の下面側には、図５に示すように、固定部材２１が配置されている。この固定部材２１は、内周側に反射面保持機構を保持可能に形成されている。反射面保持機構は、固定部材２１の後側端部に配置されている。
固定部材２１は、前側の左右両端部に、屈折光学素子による結像光学系を内包する鏡筒４１（図１２参照）に固定するための固定用係合部２１ａを有している。 `` Fixing member ''
As shown in FIG. 5, a fixing member 21 is disposed on the lower surface side of the reflection surface holding mechanism. The fixing member 21 is formed on the inner peripheral side so as to be able to hold the reflecting surface holding mechanism. The reflection surface holding mechanism is disposed at the rear end portion of the fixing member 21.
The fixing member 21 has fixing engaging portions 21a for fixing to a lens barrel 41 (see FIG. 12) including an imaging optical system based on a refractive optical element, on both left and right ends on the front side.

固定部材２１には、第２保持部材１２の穴部１２ｋに対応する位置に、左右１つずつの固定用ねじ穴部２１ｋが形成されている。この固定用ねじ穴部２１ｋは、固定部材２１の端部上に突出した突出部２１ｂの軸心に形成されている。
固定用ねじ２２を穴部１２ｋに挿入して固定用ねじ穴部２１ｋと螺合することにより、固定部材２１に対して第２保持部材１２の移動を制限している。 The fixing member 21 is formed with one fixing screw hole portion 21k on the left and right sides at a position corresponding to the hole portion 12k of the second holding member 12. The fixing screw hole portion 21k is formed in the axial center of the protruding portion 21b protruding on the end portion of the fixing member 21.
The movement of the second holding member 12 is restricted with respect to the fixing member 21 by inserting the fixing screw 22 into the hole portion 12k and screwing it with the fixing screw hole portion 21k.

なお、固定用ねじ２２で結合する際には、スプリングワッシャ２３と平ワッシャ２４を先に固定用ねじ２２に嵌め込み、第２保持部材１２と固定部材２１の間に平ワッシャ２５を挟んでから固定用ねじ２２を固定用ねじ穴部２１ｋと螺合する。 When connecting with the fixing screw 22, the spring washer 23 and the flat washer 24 are first fitted into the fixing screw 22, and the flat washer 25 is sandwiched between the second holding member 12 and the fixing member 21 and then fixed. The screw 22 is screwed into the fixing screw hole 21k.

そして、固定部材２１には、第２保持部材１２の調整用ねじ穴部１２ｐに対応する位置に、穴部は無く壁面である壁部２１ｐが存在している。この調整用ねじ穴部２１ｐに調整用ねじ２６が螺合されると、調整用ねじ２６が調整用ねじ穴部１２ｐを貫通して、その先端部が固定部材２１の壁部２１ｐを押す。 The fixing member 21 has a wall portion 21p that is a wall surface and does not have a hole portion at a position corresponding to the adjustment screw hole portion 12p of the second holding member 12. When the adjustment screw 26 is screwed into the adjustment screw hole portion 21p, the adjustment screw 26 penetrates the adjustment screw hole portion 12p, and the tip portion presses the wall portion 21p of the fixing member 21.

よって、図６に示すように、調整用ねじ２６により第２保持部材１２を固定部材２１に対してＸ軸方向へ平行移動させることにより、反射面の位置の調整を行う第１位置調整機構Ｃ１を構成している。 Accordingly, as shown in FIG. 6, the first position adjusting mechanism C <b> 1 that adjusts the position of the reflecting surface by moving the second holding member 12 in the X-axis direction relative to the fixing member 21 with the adjusting screw 26. Is configured.

また、図１１に示すように、反射面の位置が決定してから固定用ねじ２２を締めることにより、調整後の姿勢を保持することが可能となる第３姿勢保持機構Ｂ３を構成している。 Further, as shown in FIG. 11, the third posture holding mechanism B3 that can hold the adjusted posture by tightening the fixing screw 22 after the position of the reflecting surface is determined is configured. .

以上のように、実施形態において、曲面ミラー１の調整装置は、第１軸線（Ｘ）を回転中心とする第１角度調整機構Ａ１、第２軸線（Ｙ）を回転中心とする第２角度調整機構Ａ２、第１姿勢保持機構Ｂ１、第２姿勢保持機構Ｂ２、第３姿勢保持機構Ｂ３、第１軸線（Ｘ）方向への第１位置調整機構Ｃ１を備えている。 As described above, in the embodiment, the adjusting device for the curved mirror 1 includes the first angle adjustment mechanism A1 having the first axis (X) as the rotation center and the second angle adjustment having the second axis (Y) as the rotation center. A mechanism A2, a first posture holding mechanism B1, a second posture holding mechanism B2, a third posture holding mechanism B3, and a first position adjusting mechanism C1 in the first axis (X) direction are provided.

以上、実施形態の曲面ミラー１の調整装置によれば、第１角度調整機構Ａ１、第２角度調整機構Ａ２、第１姿勢保持機構Ｂ１、第２姿勢保持機構Ｂ２、第３姿勢保持機構Ｂ３、及び第１位置調整機構Ｃ１を互いに独立して備えることで、反射面の角度、姿勢及び位置をそれぞれ独自に調整でき、より高精度で容易に調整することができる。 As described above, according to the adjustment apparatus for the curved mirror 1 of the embodiment, the first angle adjustment mechanism A1, the second angle adjustment mechanism A2, the first attitude holding mechanism B1, the second attitude holding mechanism B2, the third attitude holding mechanism B3, Since the first position adjustment mechanism C1 is provided independently of each other, the angle, posture, and position of the reflecting surface can be independently adjusted, and can be easily adjusted with higher accuracy.

また、第１保持部材１１と第２保持部材１２の間にあるワッシャ１６及び／または第２保持部材１２と固定部材２１との間にある平ワッシャ２５は、そのワッシャの厚さや挟む枚数を変えることにより、反射面の上下方向の位置の調整を行うことが可能な第２位置調整機構としての機能を持たせることも可能である。 In addition, the washer 16 between the first holding member 11 and the second holding member 12 and / or the flat washer 25 between the second holding member 12 and the fixing member 21 changes the thickness of the washer and the number of sandwiched pieces. Thus, it is possible to provide a function as a second position adjusting mechanism capable of adjusting the position of the reflecting surface in the vertical direction.

その際に、高さ調整機構は、Ｘ軸方向において、同軸上で、かつ左右方向に離間して二箇所あるため、一方に挟むワッシャの数や厚みを他方に対して異ならせることにより、鏡軸を回転軸として反射面を回動させることも可能である。 At that time, since there are two height adjustment mechanisms on the same axis in the X-axis direction and spaced apart in the left-right direction, the number and thickness of washers sandwiched between the two can be made different from those of the other. It is also possible to rotate the reflecting surface about the axis.

＜曲面ミラーの取付構造＞
次に、以上の曲面ミラー１、第１保持部材１１、第２保持部材１２、及び固定部材２１の鏡筒４１に対する取付構造について説明する。 <Mounting structure of curved mirror>
Next, the mounting structure of the curved mirror 1, the first holding member 11, the second holding member 12, and the fixing member 21 to the lens barrel 41 will be described.

図１２は鏡筒４１との関係を示すもので、図１２は外装カバー５１との関係を示し、図１４は鏡筒４１に外装カバー５１を設けた状態を示し、図１５と図１６は図１４の矢印Ｄ−Ｄ線及び矢印Ｅ−Ｅ線に沿った断面をそれぞれ示している。 12 shows the relationship with the lens barrel 41, FIG. 12 shows the relationship with the exterior cover 51, FIG. 14 shows the state in which the exterior cover 51 is provided on the lens barrel 41, and FIGS. 14 shows cross sections along the arrow D-D line and the arrow EE line, respectively.

「鏡筒」
図１２に示すように、結像光学系は少なくとも一部のレンズが光軸方向へ移動可能に鏡筒４１内に保持されており、鏡筒４１は図示しない本体に固定されている。 "Tube"
As shown in FIG. 12, in the imaging optical system, at least a part of the lenses is held in a lens barrel 41 so as to be movable in the optical axis direction, and the lens barrel 41 is fixed to a main body (not shown).

鏡筒４１には、その投射側の外周部に、１８０°間隔に突起状の固定用被係合部４１ａが二ヵ所に形成されている。この固定用被係合部４１ａは、Ｙ軸と直交する平面部を持ち、Ｚ軸方向に長辺を持った平板状の形状であり、その平面部に、上下方向に貫通した二つの取付用ねじ穴４１ｂと、その取付用ねじ穴４１ｂの間に挟まれて上下方向に貫通した取付用穴部４１ｃが形成されている。 The lens barrel 41 is formed with projection-like engaged portions 41a at two positions on the outer peripheral portion on the projection side at intervals of 180 °. The fixed engaged portion 41a has a flat portion perpendicular to the Y-axis and has a flat plate shape with a long side in the Z-axis direction. A screw hole 41b and a mounting hole 41c that is sandwiched between the screw hole 41b and penetrates in the vertical direction are formed.

「固定部材」
図５から図７に示したように、固定部材２１の後端部の固定用係合部２１ａには、その平面部に二つの取付用ねじ穴２１ｂと、その取付用ねじ穴２１ｂの間に挟まれた取付用突起部２１ｃが形成されている。 `` Fixing member ''
As shown in FIGS. 5 to 7, the fixing engaging portion 21 a at the rear end of the fixing member 21 has two mounting screw holes 21 b in the flat portion and a space between the mounting screw holes 21 b. A sandwiched mounting projection 21c is formed.

そして、固定部材２１の固定用係合部２１ａの上に、鏡筒４１の固定用被係合部４１ａを重ね、取付用突起部２１ｃに取付用穴部４１ｃを係合させる。この際に、固定部材２１の取付用ねじ穴２１ｂと、鏡筒４１の取付用ねじ穴４１ｂは、各々の中心軸がＹ軸方向において同軸上にあり、図１３及び図１５に示すように、取付用ねじ４２でそれぞれ固定される。これにより、固定部材２１と鏡筒４１とを位置決めしつつ取り付けることが可能となっている。 Then, the fixing engaged portion 41a of the lens barrel 41 is overlaid on the fixing engaging portion 21a of the fixing member 21, and the mounting hole 41c is engaged with the mounting protrusion 21c. At this time, the mounting screw hole 21b of the fixing member 21 and the mounting screw hole 41b of the lens barrel 41 are coaxial in the Y-axis direction, and as shown in FIGS. Each is fixed with a mounting screw 42. As a result, the fixing member 21 and the lens barrel 41 can be attached while being positioned.

以上の構成により、固定部材２１の後端部は、本体に固定された鏡筒４１の前端部と固定されており、固定部材２１の投射方向へ突き出した前端部には、前述した曲面ミラー１の第１角度調整機構Ａ１、第２角度調整機構Ａ２、第１姿勢保持機構Ｂ１、第２姿勢保持機構Ｂ２、第３姿勢保持機構Ｂ３、及び第１位置調整機構Ｃ１が備えられている。すなわち、曲面ミラー１を含む各調整機構及び保持機構は固定部材２１により宙吊りになっている。 With the above configuration, the rear end portion of the fixing member 21 is fixed to the front end portion of the lens barrel 41 fixed to the main body, and the curved mirror 1 described above is formed on the front end portion protruding in the projection direction of the fixing member 21. 1st angle adjustment mechanism A1, 2nd angle adjustment mechanism A2, 1st attitude | position holding mechanism B1, 2nd attitude | position holding mechanism B2, 3rd attitude | position holding mechanism B3, and 1st position adjustment mechanism C1 are provided. That is, each adjustment mechanism and holding mechanism including the curved mirror 1 are suspended by the fixing member 21.

「外装カバー」
さらに、鏡筒４１の固定用被係合部４１ａよりも前方の光学系を構成する部材は、図１３から図１６に示すように、外装カバー５１により内包されている。この外装カバー５１は、鏡筒４１に固定されて固定部材２１及び曲面ミラー１の各調整機構及び保持機構とは所定の距離も保って非接触を保っている。 "Exterior cover"
Further, the members constituting the optical system in front of the fixed engaged portion 41a of the lens barrel 41 are enclosed by the exterior cover 51 as shown in FIGS. The exterior cover 51 is fixed to the lens barrel 41 and is kept in non-contact with the fixing member 21 and each adjustment mechanism and holding mechanism of the curved mirror 1 while maintaining a predetermined distance.

すなわち、外装カバー５１は、上側カバー５２と下側カバー５３を合体したもので、上側カバー５２は、鏡筒４１の先端上面に左右一対の上側カバー固定ねじ５４で固定されて、下側カバー５３は、鏡筒４１の先端下面に左右一対の下側カバー固定ねじ５５で固定される。そして、上側カバー５２と下側カバー５３は、左右一対の外装カバー固定ねじ５６で互いに固定される。 That is, the exterior cover 51 is a combination of the upper cover 52 and the lower cover 53, and the upper cover 52 is fixed to the upper surface of the distal end of the lens barrel 41 with a pair of left and right upper cover fixing screws 54. Are fixed to the lower surface of the front end of the lens barrel 41 with a pair of left and right lower cover fixing screws 55. The upper cover 52 and the lower cover 53 are fixed to each other by a pair of left and right exterior cover fixing screws 56.

「補強用部材」
また、図１３及び図１５に示すように、固定部材２１の固定用係合部２１ａを有する平面で切断した断面を想定した際の、固定部材２１の外周面に沿った形状の補強用部材４５を、固定用係合部２１ａ及び／または鏡筒４１の固定用被係合部４１ａで固定する。こうして、固定部材２１へ外装カバー５１が直接接触することを防ぐことにより、一層の強化を図ることも可能である。 "Reinforcing material"
Further, as shown in FIGS. 13 and 15, the reinforcing member 45 having a shape along the outer peripheral surface of the fixing member 21 when a cross section cut by a plane having the fixing engaging portion 21 a of the fixing member 21 is assumed. Is fixed by the fixing engaging portion 21a and / or the fixing engaged portion 41a of the lens barrel 41. In this way, by further preventing the exterior cover 51 from coming into direct contact with the fixing member 21, further strengthening can be achieved.

すなわち、補強用部材４５は、左右一対用意され、鏡筒４１の固定用被係合部４１ａに対応する固定用被係合部４５ａが基端部に形成されている。この固定用被係合部４５ａには、取付用ねじ穴４１ｂと取付用穴部４１ｃに対応する取付用ねじ穴４５ｂ及び取付用穴部４５ｃが形成されている。 That is, a pair of left and right reinforcing members 45 are prepared, and a fixed engaged portion 45a corresponding to the fixed engaged portion 41a of the lens barrel 41 is formed at the base end portion. The fixing engaged portion 45a has mounting screw holes 41b and mounting screw holes 45b and mounting hole portions 45c corresponding to the mounting hole portions 41c.

この補強用部材４５は、固定部材２１との結合の際に、鏡筒４１の固定用被係合部４１ａに固定用被係合部４５ａを重ね、取付用突起部２１ｃに取付用穴部４５ｃを係合させ、取付用ねじ４２が取付用ねじ穴４５ｂにねじ込まれて固定される。 When the reinforcing member 45 is coupled to the fixing member 21, the fixing engaged portion 45a is superimposed on the fixing engaged portion 41a of the lens barrel 41, and the mounting projection 45c is attached to the mounting hole 45c. The mounting screw 42 is screwed into the mounting screw hole 45b and fixed.

また、左右の補強用部材４５の外周縁は、図１５に示されるように、外装カバー５１の上側カバー５２と下側カバー５３の合わせ部内周面の溝部に係合して、外装カバー５１の歪みを抑制している。 Further, as shown in FIG. 15, the outer peripheral edges of the left and right reinforcing members 45 engage with the grooves on the inner peripheral surface of the mating portion of the upper cover 52 and the lower cover 53 of the outer cover 51, and Distortion is suppressed.

以上、実施形態の曲面ミラー１の取付構造によれば、曲面ミラー１、第１保持部材１１、第２保持部材１２、及び固定部材２１を、外装カバー５１と非接触状態としたことで、外装カバー５１に外部から衝撃が加えられて変形したとしても、曲面ミラー１と第１保持部材１１及び第２保持部材１２に外力が伝わらず、従って、第１保持部材１１及び第２保持部材１２に備えた第１角度調整機構Ａ１、第２角度調整機構Ａ２による曲面ミラー１の角度調整が狂わない。 As described above, according to the mounting structure of the curved mirror 1 of the embodiment, the curved mirror 1, the first holding member 11, the second holding member 12, and the fixing member 21 are in a non-contact state with the exterior cover 51. Even if the cover 51 is deformed by an external impact, external force is not transmitted to the curved mirror 1, the first holding member 11, and the second holding member 12, and accordingly, the first holding member 11 and the second holding member 12 are not affected. The angle adjustment of the curved mirror 1 by the provided first angle adjustment mechanism A1 and second angle adjustment mechanism A2 does not go wrong.

また、補強用部材４５は、外装カバー５１の内部に沿わせた形状で、固定部材２１よりも外周側に取り付けられて、固定部材２１及び曲面ミラー１の各調整機構及び保持機構とは接触しておらず、外装カバー５１からの外力を鏡筒４１へ直接伝達して、固定部材２１及び曲面ミラー１の各調整機構及び保持機構への影響を抑制することができる。 The reinforcing member 45 has a shape along the inside of the exterior cover 51 and is attached to the outer peripheral side of the fixing member 21, and is in contact with the adjusting mechanism and the holding mechanism of the fixing member 21 and the curved mirror 1. However, the external force from the exterior cover 51 can be directly transmitted to the lens barrel 41 to suppress the influence of the fixing member 21 and the curved mirror 1 on each adjustment mechanism and the holding mechanism.

さらに、補強用部材４５により、外装カバー５１の歪みを抑制することができる。 Furthermore, the reinforcement member 45 can suppress the distortion of the exterior cover 51.

（変形例）
以上の実施形態においては、光軸と直交する軸線を第１軸線、光軸と直交して、かつ第１軸線と直交する軸線を第２軸線としたが、これに限らず、光軸と直交する軸線と平行な軸線を第１軸線、光軸と直交して、かつ第１軸線と直交する軸線と平行な軸線を第２軸線としてもよい。
さらに、その他、具体的な細部構造等について適宜に変更可能であることは勿論である。 (Modification)
In the above embodiment, the axis orthogonal to the optical axis is the first axis, the axis orthogonal to the optical axis, and the axis orthogonal to the first axis is the second axis. An axis parallel to the axis to be aligned may be a first axis, an axis orthogonal to the optical axis and an axis parallel to the axis orthogonal to the first axis may be the second axis.
Furthermore, it is needless to say that other specific detailed structures can be appropriately changed.

１曲面ミラー
１ａ第１係合部
１ｂ突起部
１ｃ穴部
１ｄ突起部
２第１被係合部材
３スプリングワッシャ（弾性部材）
４調整用ねじ
５圧縮バネ
６ビス
７板バネ
８板バネ
９ビス
１１第１保持部材（ミラー保持部材）
１１ａ貫通孔
１１ｂ突起部
１１ｃ穴部
１１ｄ位置調整用溝部
１１ｅ延設部
１１ｆ穴部
１１ｇ延設部
１１ｈ穴部（第２係合部）
１１ｉ調整用穴部
１２第２保持部材（ミラー保持部材）
１２ｅ突出部
１２ｆ固定用ねじ穴部
１２ｈ穴部（第２被係合部）
１２ｊ調整用治具固定部
１２ｋ穴部
１２ｍ平面部
１２ｎ平面部
１２ｐ調整用ねじ穴部（第３係合部）
１３固定用ねじ
１４スプリングワッシャ
１５平ワッシャ
１６平ワッシャ
１７調整用ねじ
１８圧縮バネ
２１固定部材
２１ａ固定用係合部
２１ｂ取付用ねじ穴
２１ｃ取付用突起部
２１ｋ固定用ねじ穴部
２１ｐ壁部（第３被係合部）
２２固定用ねじ
２３スプリングワッシャ
２４平ワッシャ
２５平ワッシャ
２６調整用ねじ（位置調整部材）
３１冶具部材
３１ｉ突起部
３２冶具固定用ねじ
４１鏡筒
４１ａ固定用被係合部
４１ｂ取付用ねじ穴
４１ｃ取付用穴部
４２取付用ねじ
４５補強用部材
４５ａ固定用被係合部
４５ｂ取付用ねじ穴
４５ｃ取付用穴部
５１外装カバー
５２上側カバー
５３下側カバー
５４上側カバー固定ねじ
５５下側カバー固定ねじ
５６外装カバー固定ねじ
Ａ１第１角度調整機構
Ａ２第２角度調整機構
Ｂ１第１姿勢保持機構
Ｂ２第２姿勢保持機構
Ｂ３第３姿勢保持機構
Ｃ１第１位置調整機構 DESCRIPTION OF SYMBOLS 1 Curved surface mirror 1a 1st engaging part 1b Projection part 1c Hole part 1d Projection part 2 1st to-be-engaged member 3 Spring washer (elastic member)
4 Adjustment screw 5 Compression spring 6 Screw 7 Leaf spring 8 Leaf spring 9 Screw 11 First holding member (mirror holding member)
11a Through-hole 11b Protrusion 11c Hole 11d Position adjustment groove 11e Extension 11f Hole 11g Extension 11h Hole (second engagement part)
11i Adjustment hole 12 Second holding member (mirror holding member)
12e Protruding portion 12f Fixing screw hole portion 12h Hole portion (second engaged portion)
12j Adjustment jig fixing part 12k Hole part 12m Plane part 12n Plane part 12p Adjustment screw hole part (third engagement part)
13 Fixing screw 14 Spring washer 15 Flat washer 16 Flat washer 17 Adjustment screw 18 Compression spring 21 Fixing member 21a Fixing engagement portion 21b Mounting screw hole 21c Mounting projection 21k Fixing screw hole 21p Wall portion (first 3 engaged parts)
22 Fixing screw 23 Spring washer 24 Flat washer 25 Flat washer 26 Adjustment screw (position adjustment member)
31 Jig member 31i Projection portion 32 Jig fixing screw 41 Lens barrel 41a Fixed engaged portion 41b Mounting screw hole 41c Mounting hole portion 42 Mounting screw 45 Reinforcing member 45a Fixing engaged portion 45b Mounting screw Hole 45c Mounting hole 51 Exterior cover 52 Upper cover 53 Lower cover 54 Upper cover fixing screw 55 Lower cover fixing screw 56 Exterior cover fixing screw A1 First angle adjustment mechanism A2 Second angle adjustment mechanism B1 First attitude holding mechanism B2 Second posture holding mechanism B3 Third posture holding mechanism C1 First position adjustment mechanism

Claims

A curved mirror that reflects image light emitted from the imaging optical system in the first emission direction in the second emission direction;
A mirror holding member for holding the curved mirror;
An angle adjusting mechanism for adjusting the angle of the reflecting surface of the curved mirror via the mirror holding member;
In a projection optical system comprising a lens barrel containing the imaging optical system,
The mirror holding member is attached to one end, and the other end is fixed to the projection side end of the lens barrel;
The other end is fixed to the projection side end of the barrel, and includes a part of the imaging optical system, a curved mirror, a mirror holding member, and an exterior cover that houses the fixing member,
A curved mirror mounting structure in which the curved mirror, mirror holding member, and fixing member are in a non-contact state with the exterior cover ,
In a shape along the inside of the exterior cover, provided with a reinforcing member attached to the outer peripheral side than the fixed member,
A curved mirror mounting structure , wherein an outer peripheral edge of the reinforcing member is engaged with a groove portion of an inner peripheral surface of a mating portion of the upper cover and the lower cover of the exterior cover .