JP5540929B2

JP5540929B2 - projector

Info

Publication number: JP5540929B2
Application number: JP2010141397A
Authority: JP
Inventors: 紳悟大塚
Original assignee: Seiko Epson Corp
Current assignee: Seiko Epson Corp
Priority date: 2010-06-22
Filing date: 2010-06-22
Publication date: 2014-07-02
Anticipated expiration: 2030-06-22
Also published as: JP2012008186A

Description

本発明は、プロジェクターに関する。 The present invention relates to a projector.

従来、Ｒ，Ｇ，Ｂの色光ごとに画像情報に応じて変調し、変調した各色光を合成して画像光を形成する光学装置と、形成された画像光を拡大投射する投射レンズとを備えたプロジェクターが知られている（例えば、特許文献１参照）。
特許文献１に記載のプロジェクターでは、光学装置は、色光ごとに設けられる３つの反射型光変調装置である液晶パネルと、三角柱状に形成されて所定の一面に液晶パネルが取り付けられる３つの取付部材（支持部材）と、各液晶パネルによって変調された各色光を合成して画像光を形成する立方体状のクロスダイクロイックプリズムとを備えている。液晶パネルが取り付けられた３つの取付部材および投射レンズは、立方体状のクロスダイクロイックプリズムが有する４つの各側面にそれぞれ近接配置される。 2. Description of the Related Art Conventionally, an optical device that modulates R, G, and B color lights according to image information, combines the modulated color lights to form image light, and a projection lens that enlarges and projects the formed image light is provided. A known projector is known (for example, see Patent Document 1).
In the projector described in Patent Document 1, the optical device includes three liquid crystal panels that are reflection light modulators provided for each color light, and three attachment members that are formed in a triangular prism shape and attached to a predetermined surface. (Supporting member) and a cube-shaped cross dichroic prism that combines the color lights modulated by the liquid crystal panels to form image light. The three attachment members and the projection lens to which the liquid crystal panel is attached are disposed close to the four side surfaces of the cubic cross dichroic prism.

ところで、プロジェクターでは、鮮明な画像を得るために、各液晶パネルは投射レンズのバックフォーカス位置に必ずなければならない。また、より鮮明な画像を得るために、各液晶パネル間での画素ずれの発生を防止する必要がある。このため、光学装置の製造時には、各液晶パネルを投射レンズのバックフォーカス位置に正確に配置するフォーカス調整、および、各液晶パネルの画素を一致させるアライメント調整を高精度に行う必要がある。
そして、特許文献１に記載のプロジェクターでは、取付部材に対してパネル支持板を介して液晶パネルを取り付ける構成を採用し、取付部材とパネル支持板との間に液晶パネルの位置調整を行うための構造を設けている。すなわち、クロスダイクロイックプリズムに固定された取付部材に対して、冶具を用いて液晶パネルを移動させることで液晶パネルの位置調整を行っている。 By the way, in a projector, in order to obtain a clear image, each liquid crystal panel must be in the back focus position of the projection lens. Further, in order to obtain a clearer image, it is necessary to prevent occurrence of pixel shift between the liquid crystal panels. For this reason, at the time of manufacturing the optical device, it is necessary to perform the focus adjustment for accurately disposing each liquid crystal panel at the back focus position of the projection lens and the alignment adjustment for matching the pixels of each liquid crystal panel with high accuracy.
And in the projector of patent document 1, the structure which attaches a liquid crystal panel via a panel support plate with respect to an attachment member is employ | adopted, and position adjustment of a liquid crystal panel is performed between an attachment member and a panel support plate. A structure is provided. That is, the position of the liquid crystal panel is adjusted by moving the liquid crystal panel using a jig with respect to the mounting member fixed to the cross dichroic prism.

反射型変調素子を用いたプロジェクターにおいて、光源から投射部に至る経路には、反射型変調素子を含め各種光学素子が配置されている。光学部品は光束が通過する際の光の吸収によって自身が発熱し光学特性が劣化する虞がある。このため通常プロジェクターはファンを用いて外気を取り込み、光学部品を冷却している。しかし、外気中に混在する塵埃もプロジェクター内部に入る虞があり、塵埃が反射型変調素子等の光学部品に付着すると、投射画像の画質が劣化するという問題が起きる。 In a projector using a reflection type modulation element, various optical elements including a reflection type modulation element are arranged in a path from a light source to a projection unit. There is a risk that the optical component itself generates heat due to absorption of light when the light beam passes and optical characteristics deteriorate. For this reason, a projector usually takes in outside air using a fan and cools optical components. However, dust mixed in the outside air may enter the inside of the projector, and when dust adheres to an optical component such as a reflective modulation element, there arises a problem that the image quality of the projected image deteriorates.

そこで反射型変調素子周辺の構造を密閉し、塵埃の付着を抑制するプロジェクターが提案されている（例えば、特許文献１参照）。 In view of this, there has been proposed a projector that seals the structure around the reflective modulation element and suppresses the adhesion of dust (see, for example, Patent Document 1).

特開２００９−３６８１９号公報JP 2009-36819 A

しかしながら、特許文献１に記載のプロジェクターでは、ワイヤーグリッドを取付部材に接着剤等で固定し、取付部材を再結合プリズムの光束入射面に接着剤等で固定している。これらによりワイヤーグリッドを含めた各光学素子を光軸に対して最適な位置に調整することが出来ないという問題を有している。 However, in the projector described in Patent Document 1, the wire grid is fixed to the mounting member with an adhesive or the like, and the mounting member is fixed to the light incident surface of the recombination prism with the adhesive or the like. As a result, each optical element including the wire grid cannot be adjusted to an optimum position with respect to the optical axis.

本発明は、上記課題の少なくとも一部を解決するためになされたものであり、以下の形態または適用例として、変調ユニットの各部材の位置調整を容易にできるプロジェクターを提供することを目的とする。 SUMMARY An advantage of some aspects of the invention is to provide a projector that can easily adjust the position of each member of a modulation unit as the following form or application example. .

［適用例１］本適用例にかかるプロジェクターは、複数の色光を色光毎に画像情報に応じて変調する複数の反射型光変調装置と、前記反射型光変調装置に照射される光束および前記反射型光変調装置で変調された光束を偏光分離する複数の反射型偏光板と、前記反射型光変調装置にて変調され前記反射型偏光板にて反射された偏光方向と略同一の偏光方向を有する偏光光を透過させる偏光板とを備え、前記反射型偏光板を保持する反射型偏光板調整部材と、前記反射型光変調装置、前記偏光板を支持する３側面を有する取付部材を備えたことを特徴とする。 Application Example 1 A projector according to this application example includes a plurality of reflection-type light modulation devices that modulate a plurality of color lights according to image information for each color light, a light beam applied to the reflection-type light modulation device, and the reflection. A plurality of reflection-type polarizing plates for polarization-separating the light beam modulated by the reflection-type light modulation device, and a polarization direction substantially the same as the polarization direction modulated by the reflection-type light modulation device and reflected by the reflection-type polarization plate A polarizing plate that transmits the polarized light, a reflective polarizing plate adjustment member that holds the reflective polarizing plate, a reflective light modulator, and a mounting member that has three side surfaces that support the polarizing plate. It is characterized by that.

本適用例によれば、取付部材に反射型偏光板調整部材を備えているので、光軸に対して光学装置単体で同時に最適な位置調整を行うことができ、これによってコントラストの最大・最適化が可能となる。
また、本適用例によれば、取付部材に形成された３つの開口部がそれぞれ反射型光変調装置、反射型偏光板、および光学素子により閉塞され、取付部材内部の空間が密閉されている。そして、この密閉空間内に反射型光変調装置の反射面が配置されることとなるので、反射面への粉塵の付着を防ぐことができ、反射面に付着した粉塵が投射画像中に影として映るなどの投射画像の劣化を防止できる。 According to this application example, since the reflective polarizing plate adjusting member is provided on the mounting member, the optimum position adjustment can be performed simultaneously with the optical device alone with respect to the optical axis, thereby maximizing and optimizing the contrast. Is possible.
Further, according to this application example, the three openings formed in the attachment member are respectively closed by the reflective light modulation device, the reflective polarizing plate, and the optical element, and the space inside the attachment member is sealed. And since the reflective surface of the reflection type light modulation device will be arranged in this sealed space, it is possible to prevent the dust from adhering to the reflective surface, and the dust adhering to the reflective surface is shadowed in the projected image. Deterioration of the projected image such as reflection can be prevented.

［適用例２］上記適用例にかかるプロジェクターにおいて、前記反射型偏光板調整部材は、上部に所定の軸を中心として傾斜させるための操作部を有し、下部には傾斜を規制する開口を有し、前記操作部には、長孔の開口が設けられていることを特徴とする。
このような構成によれば、簡易な構成で、操作部を使用しながら位置調整ができる。 Application Example 2 In the projector according to the application example described above, the reflective polarizing plate adjustment member has an operation part for inclining about a predetermined axis at the upper part and an opening for restricting the inclination at the lower part. The operation portion is provided with a long hole opening.
According to such a configuration, the position can be adjusted with a simple configuration while using the operation unit.

［適用例３］上記適用例にかかるプロジェクターにおいて、前記取付部材の第１の側面には、前記反射型偏光板調整部材の操作部の長穴の開口と係合する第１の突起部と、傾斜を規制する前記開口と係合する第２の突起部を有することを特徴とする。
このような構成によれば、簡易な構成で、容易に位置調整できる。 Application Example 3 In the projector according to the application example described above, on the first side surface of the mounting member, a first protrusion that engages with the opening of the elongated hole of the operation unit of the reflective polarizing plate adjustment member; It has the 2nd projection part engaged with the said opening which controls inclination.
According to such a configuration, the position can be easily adjusted with a simple configuration.

［適用例４］上記適用例にかかるプロジェクターにおいて、前記偏光板を保持し、前記取付部材に対して所定の軸を中心として傾斜可能に取り付けられる偏光板調整部材と、前記反射型光変調装置を光学的に補償する光学補償板と前記光学補償板を保持し、前記取付部材に対して所定の軸を中心として傾斜可能に取り付けられる光学補償板調整部材を備え、前記偏光板調整部材は、上部の一端には突出部を形成し、他端には、所定の軸を中心として傾斜させるための操作部を形成し、前記突出部には、開口が設けられ、前記光学補償板調整部材は、上部に所定の軸を中心として傾斜させるための操作部と、平面視で互いに離間する方向に突出する一対の腕部を形成し、前記一対の腕部は係合孔を有することを特徴とする。 Application Example 4 In the projector according to the application example described above, a polarizing plate adjustment member that holds the polarizing plate and is attached to the attachment member so as to be tiltable about a predetermined axis, and the reflective light modulation device. An optical compensation plate that optically compensates and an optical compensation plate adjustment member that holds the optical compensation plate and is attached to the attachment member so as to be tiltable about a predetermined axis. A projecting portion is formed at one end, and an operation portion for tilting about a predetermined axis is formed at the other end, an opening is provided in the projecting portion, and the optical compensation plate adjusting member is An operating portion for inclining about a predetermined axis and a pair of arm portions protruding in directions away from each other in plan view are formed on the upper portion, and the pair of arm portions have engagement holes. .

［適用例５］上記適用例にかかるプロジェクターにおいて、前記取付部材の第２の側面には、突起部が形成され、前記偏光板調整部材の前記開口と係合し、前記取付部材の外面には、平面視で互いに平行となる一対の支持面が形成され、前記一対の支持面には、平面視で互いに離間する方向に突出する一対の突起部が形成され、前記取付部材の天面部には、前記操作部を取付部材外部に突出するための操作用切り欠き部が形成され、前記光学補償板調整部材が係止されていることを特徴とする。 Application Example 5 In the projector according to the application example described above, a protrusion is formed on the second side surface of the mounting member, and engages with the opening of the polarizing plate adjustment member, and on the outer surface of the mounting member. A pair of support surfaces that are parallel to each other in a plan view are formed, and a pair of protrusions that protrude in a direction away from each other in the plan view is formed on the pair of support surfaces, and the top surface portion of the mounting member The operation notch for projecting the operation part to the outside of the attachment member is formed, and the optical compensation plate adjusting member is locked.

本適用例によれば、偏光板調整部材の上部操作部と、光学補償板調整部材の上部操作部を動作させるだけで、簡単に調整ができる。 According to this application example, the adjustment can be easily performed only by operating the upper operation portion of the polarizing plate adjustment member and the upper operation portion of the optical compensation plate adjustment member.

［適用例６］上記適用例にかかるプロジェクターにおいて、前記光学補償板調整部材、前記反射型偏光板調整部材及び、前記偏光板調整部材の調整は、前記取付部材の天面方向から調整可能であることを特徴とする。 Application Example 6 In the projector according to the application example described above, the adjustment of the optical compensation plate adjusting member, the reflective polarizing plate adjusting member, and the polarizing plate adjusting member can be adjusted from the top surface direction of the mounting member. It is characterized by that.

本適用例によれば、反射型偏光板、偏光板、光学補償板の調整部材の操作部を同一方向とするため、３部品の調整を同方向から簡単に調整できる。
また、調整部材の操作部の簡易な形状にすることによって、取付部材の構造の簡素化が図れる。 According to this application example, since the operation parts of the adjustment members of the reflective polarizing plate, the polarizing plate, and the optical compensation plate are in the same direction, the adjustment of the three components can be easily adjusted from the same direction.
Further, the structure of the attachment member can be simplified by making the operation portion of the adjustment member simple.

本実施形態におけるプロジェクターの概略構成を示す図。FIG. 2 is a diagram illustrating a schematic configuration of a projector according to the present embodiment. 本実施形態における変調ユニットの構成を示す図。The figure which shows the structure of the modulation unit in this embodiment. 本実施形態における変調ユニットの構成を示す図。The figure which shows the structure of the modulation unit in this embodiment. 本実施形態における取付部材及び補償板調整部材の係止構造を説明するための図。The figure for demonstrating the latching structure of the attachment member in this embodiment, and a compensation board adjustment member. 本実施形態における取付部材及びワイヤーグリッド調整部材の係止構造を説明するための図。The figure for demonstrating the latching structure of the attachment member and wire grid adjustment member in this embodiment. 本実施形態における取付部材及び偏光板調整部材の係止構造を説明するための図。The figure for demonstrating the latching structure of the attachment member and polarizing plate adjustment member in this embodiment. 本実施形態における光学補償素子の姿勢調整を説明するための図。The figure for demonstrating the attitude | position adjustment of the optical compensation element in this embodiment. 本実施形態におけるワイヤーグリッドの姿勢調整を説明するための図。The figure for demonstrating the attitude | position adjustment of the wire grid in this embodiment. 本実施形態における偏光板の姿勢調整を説明するための図。The figure for demonstrating the attitude | position adjustment of the polarizing plate in this embodiment.

以下、本発明にかかる一実施形態を図面に基づいて説明する。
〔プロジェクターの構成〕
図１は、プロジェクター１の概略構成を示す図である。具体的に、図１は、本実施形態の要部である投射ユニット２の光学系を模式的に示した図である。
プロジェクター１は、画像を投射してスクリーン（図示略）上に投射画像を表示する。
このプロジェクター１は、図１に示すように、外装筐体（図示略）内部に収納される投射ユニット２を備える。 Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.
[Configuration of projector]
FIG. 1 is a diagram illustrating a schematic configuration of the projector 1. Specifically, FIG. 1 is a diagram schematically showing an optical system of a projection unit 2 which is a main part of the present embodiment.
The projector 1 projects an image and displays a projected image on a screen (not shown).
As shown in FIG. 1, the projector 1 includes a projection unit 2 housed in an exterior housing (not shown).

投射ユニット２は、光源装置（図示略）から出射され、ダイクロイックミラー等の色分離光学装置（図示略）で分離されたＲ（赤）、Ｇ（緑）、Ｂ（青）の各色光をそれぞれ変調し、変調した各色光を合成して投射するものである。
この投射ユニット２は、図１に示すように、３つの変調ユニット２Ａと、色合成光学装置としてのクロスダイクロイックプリズムであるプリズム２Ｂと、投射レンズ２Ｃとを備える。 The projection unit 2 emits R (red), G (green), and B (blue) light beams emitted from a light source device (not shown) and separated by a color separation optical device (not shown) such as a dichroic mirror. Modulated, and the modulated color lights are combined and projected.
As shown in FIG. 1, the projection unit 2 includes three modulation units 2A, a prism 2B that is a cross dichroic prism as a color synthesis optical device, and a projection lens 2C.

〔変調ユニットの構成〕
図２及び図３は、変調ユニット２Ａの構成を示す図である。具体的に、図２は変調ユニット２Ａの斜視図であり、図３は変調ユニット２Ａの分解斜視図である。
３つの変調ユニット２Ａは、図１に示すように、同様の構成を有し、反射型偏光板としてのワイヤーグリッド３（図１、図５）と、反射型偏光板調整部材としてのワイヤーグリッド調整部材３１（図５）と、反射型光変調装置４（図３）と、偏光板５（図１、図６）と、偏光板調整部材５１（図６）、光学補償板としての光学補償素子６（図１、図３）と、取付部材７（図２、図３）と、光学補償板調整部材としての光学補償素子調整部材８（図２、図３）とを備える。
なお、以下では、説明の便宜上、Ｒ色光側のワイヤーグリッドに３Ｒ、Ｇ色光側のワイヤーグリッドに３Ｇ、Ｂ色光側のワイヤーグリッドに３Ｂの符号を付して説明する（図１）。 [Configuration of modulation unit]
2 and 3 are diagrams showing the configuration of the modulation unit 2A. Specifically, FIG. 2 is a perspective view of the modulation unit 2A, and FIG. 3 is an exploded perspective view of the modulation unit 2A.
As shown in FIG. 1, the three modulation units 2 A have the same configuration, and a wire grid 3 (FIG. 1, FIG. 5) as a reflective polarizing plate and a wire grid adjustment as a reflective polarizing plate adjusting member. Member 31 (FIG. 5), reflection type light modulation device 4 (FIG. 3), polarizing plate 5 (FIGS. 1 and 6), polarizing plate adjusting member 51 (FIG. 6), optical compensation element as an optical compensation plate 6 (FIGS. 1 and 3), an attachment member 7 (FIGS. 2 and 3), and an optical compensation element adjustment member 8 (FIGS. 2 and 3) as an optical compensation plate adjustment member.
In the following description, for convenience of explanation, 3R is attached to the wire grid on the R color light side, 3G is attached to the wire grid on the G color light side, and 3B is attached to the wire grid on the B color light side (FIG. 1).

〔ワイヤーグリッドの構成〕
ワイヤーグリッド３は、格子構造に基づく回折により、入射した光束を偏光分離する。このワイヤーグリッド３は、図１または図２に示すように、取付部材７により、入射光束の光軸に対して略４５°傾斜した状態で配置される。
そして、ワイヤーグリッド３は、入射した光束のうち、所定の偏光光（第１の直線偏光光）を透過させ、第１の直線偏光光の偏光方向に直交する偏光方向を有する偏光光（第２の直線偏光光）を反射させ、入射した光束を偏光分離する。 [Configuration of wire grid]
The wire grid 3 polarizes and separates the incident light beam by diffraction based on the lattice structure. As shown in FIG. 1 or FIG. 2, the wire grid 3 is arranged by the attachment member 7 in a state inclined approximately 45 ° with respect to the optical axis of the incident light beam.
The wire grid 3 transmits predetermined polarized light (first linearly polarized light) out of the incident light beam, and has polarized light (second) that has a polarization direction orthogonal to the polarization direction of the first linearly polarized light. The linearly polarized light) is reflected and the incident light beam is polarized and separated.

〔反射型光変調装置の構成〕
反射型光変調装置４は、シリコン基板上に液晶が形成された所謂ＬＣＯＳ(Liquid Crystal On Silicon)で構成された反射型液晶パネルを備える。この反射型光変調装置４は、図１ないし図３に示すように、取付部材７により、ワイヤーグリッド３を透過した光束の光軸に対して略直交した状態で配置される。
そして、反射型光変調装置４は、制御装置（図示略）から信号が入力されることで、前記液晶の配向状態が制御され、ワイヤーグリッド３を透過した偏光光束の偏光方向を変調（位相変調）し、ワイヤーグリッド３に向けて反射する。反射型光変調装置４にて変調され、ワイヤーグリッド３に向けて反射された光束は、第２の直線偏光光と同一の偏光方向を有する偏光光のみがワイヤーグリッド３にて反射されてプリズム２Ｂに向う。 [Configuration of reflection type light modulation device]
The reflection type light modulation device 4 includes a reflection type liquid crystal panel made of so-called LCOS (Liquid Crystal On Silicon) in which a liquid crystal is formed on a silicon substrate. As shown in FIGS. 1 to 3, the reflection type light modulation device 4 is arranged in a state substantially orthogonal to the optical axis of the light beam transmitted through the wire grid 3 by the mounting member 7.
Then, the reflection type light modulation device 4 receives a signal from a control device (not shown), thereby controlling the alignment state of the liquid crystal and modulating the polarization direction of the polarized light beam transmitted through the wire grid 3 (phase modulation). And reflected toward the wire grid 3. Of the light beam modulated by the reflection-type light modulation device 4 and reflected toward the wire grid 3, only the polarized light having the same polarization direction as the second linearly polarized light is reflected by the wire grid 3, and the prism 2B. Towards.

〔偏光板の構成〕
偏光板５は、反射型光変調装置４にて変調されワイヤーグリッド３にて反射された第２の直線偏光光の偏光方向と略同一の偏光方向を有する偏光光を透過させる。すなわち、ワイヤーグリッド３及び偏光板５の双方を用いることで、ワイヤーグリッド３にて所望の直線偏光光以外の偏光成分が反射された場合であっても、偏光板５にて前記偏光成分を除去する構成を採用している。
そして、偏光板５は、図１ないし図６に示すように、取付部材７により、プリズム２Ｂの光入射面２Ｂ１（図１）に対向するように配置される。 [Configuration of polarizing plate]
The polarizing plate 5 transmits polarized light having a polarization direction substantially the same as the polarization direction of the second linearly polarized light modulated by the reflective light modulation device 4 and reflected by the wire grid 3. That is, by using both the wire grid 3 and the polarizing plate 5, the polarizing component is removed by the polarizing plate 5 even when a polarized light component other than the desired linearly polarized light is reflected by the wire grid 3. The structure to be adopted is adopted.
As shown in FIGS. 1 to 6, the polarizing plate 5 is disposed by the mounting member 7 so as to face the light incident surface 2 B 1 (FIG. 1) of the prism 2 B.

なお、プリズム２Ｂは、図１に示すように、各偏光板５を透過した各色光がそれぞれ入射される３つの光入射面２Ｂ１を有し、入射した各色光を合成する。
このプリズム２Ｂは、４つの直角プリズムを貼り合せた平面視略正方形状をなし、直角プリズム同士を貼り合せた界面には、２つの誘電体多層膜が形成されている。これら誘電体多層膜は、ワイヤーグリッド３Ｇにて反射されたＧ色光を透過し、各ワイヤーグリッド３Ｒ，３Ｂにて反射されたＲ，Ｂ色光をそれぞれ反射する。このようにして、各色光が合成される。そして、プリズム２Ｂで合成された光束（画像）は、投射レンズ２Ｃにてスクリーンに向けて投射される。 As shown in FIG. 1, the prism 2 B has three light incident surfaces 2 B 1 on which the respective color lights transmitted through the respective polarizing plates 5 are incident, and synthesizes the incident color lights.
The prism 2B has a substantially square shape in plan view in which four right-angle prisms are bonded together, and two dielectric multilayer films are formed at the interface where the right-angle prisms are bonded together. These dielectric multilayer films transmit the G color light reflected by the wire grid 3G, and reflect the R and B color lights reflected by the wire grids 3R and 3B, respectively. In this way, each color light is synthesized. The luminous flux (image) synthesized by the prism 2B is projected toward the screen by the projection lens 2C.

〔光学補償素子の構成〕
光学補償素子６は、ガラスまたはブラスチック等のポリマー製の透明板上に、複屈折性を有する無機若しくは有機材料からなる板状部材、または、これらを複合した板状部材に、ＷＶ（Wide View）フィルム等を取り付けたものである。この光学補償素子６は、反射型光変調装置４にて正確に変調できなかった位相変調量を微調整し、投射画像のコントラストを向上させる。
そして、光学補償素子６は、図１ないし図３に示すように、取付部材７内部に収納され、反射型光変調装置４に対向するように配置される。 [Configuration of optical compensation element]
The optical compensation element 6 is formed on a transparent plate made of a polymer such as glass or plastic, a plate-like member made of an inorganic or organic material having birefringence, or a plate-like member that is a composite of these, WV (Wide View). ) A film or the like is attached. The optical compensation element 6 finely adjusts the amount of phase modulation that cannot be accurately modulated by the reflection type light modulation device 4 and improves the contrast of the projected image.
As shown in FIGS. 1 to 3, the optical compensation element 6 is housed inside the attachment member 7 and is disposed so as to face the reflection type light modulation device 4.

〔取付部材の構成〕
取付部材７は、プラスチック製でワイヤーグリッド３およびワイヤーグリッド調整部材３１、反射型光変調装置４、偏光板５および偏光板調整部材５１、及び光学補償素子６を支持する。
この取付部材７は、図２または図３に示すように、断面略直角二等辺三角形状を有する三角柱状の中空部材であり、斜面である第１側面７１、頂角を挟む第２側面７２及び第３側面７３を備える。
また、第１側面７１には、突起部７１１，７１２，７１３が形成され、第３側面７３には突起部７３１が形成されている。 [Configuration of mounting members]
The attachment member 7 is made of plastic and supports the wire grid 3 and the wire grid adjustment member 31, the reflective light modulation device 4, the polarizing plate 5 and the polarizing plate adjustment member 51, and the optical compensation element 6.
As shown in FIG. 2 or 3, the mounting member 7 is a triangular prism-shaped hollow member having a substantially right-angled isosceles triangular section, and includes a first side surface 71 that is a slope, a second side surface 72 that sandwiches the apex angle, and A third side surface 73 is provided.
Further, the first side surface 71 is formed with protrusions 711, 712, and 713, and the third side surface 73 is formed with a protrusion 731.

第１側面７１には、図５に示すように、開口部７４Ａが形成されている。この開口部７４Ａを閉塞するようにワイヤーグリッド３、ワイヤーグリッド調整部材３１が固定される。
また、第３側面７３には、図６に示すように、開口部７４Ｃが形成されている。この開口部７４Ｃを閉塞するように偏光板５、偏光板調整部材５１が固定される。 As shown in FIG. 5, an opening 74 A is formed in the first side surface 71. The wire grid 3 and the wire grid adjusting member 31 are fixed so as to close the opening 74A.
Further, as shown in FIG. 6, an opening 74 C is formed in the third side surface 73. The polarizing plate 5 and the polarizing plate adjusting member 51 are fixed so as to close the opening 74C.

第２側面７２には、図３に示すように、内部に向けて窪む平面視略矩形状の凹部７５が形成されている。
この凹部７５において、底部分の一部には、取付部材７内外を連通する平面視矩形状の開口部７４Ｂが形成されている。
また、凹部７５において、図３中、左上部分の側壁、及び右下部分の側壁には、左右方向に沿って凹部７５内外を連通する第１固定用切欠部７６Ａ及び第２固定用切欠部７６Ｂがそれぞれ形成されている。 As shown in FIG. 3, the second side surface 72 is formed with a concave portion 75 having a substantially rectangular shape in plan view that is recessed toward the inside.
In the recess 75, an opening 74 B having a rectangular shape in plan view that communicates the inside and outside of the attachment member 7 is formed in a part of the bottom portion.
Further, in the recess 75, the first fixing notch 76 A and the second fixing notch 76 B that communicate with the inside and outside of the recess 75 along the left-right direction are provided on the side wall of the upper left portion and the lower right portion in FIG. 3. Are formed respectively.

そして、取付部材７外面には、第１固定用切欠部７６Ａ，第２固定用切欠部７６Ｂにそれぞれ連接し、第３側面７３に平行となる方向に延出する第１支持面７７Ａ（図４（Ａ）参照）及び第２支持面７７Ｂ（図３、図４（Ｂ）参照）がそれぞれ形成されている。
これら第１支持面７７Ａ，第２支持面７７Ｂには、第３側面７３に略直交する方向に突出する略円柱状の第１突起部７８Ａ（図４（Ａ）参照）及び第２突起部７８Ｂ（図３、図４（Ｂ）参照）がそれぞれ形成されている。
さらに、取付部材７の天面部には、図２または図３に示すように、上下方向に沿って凹部７５内外を連通する操作用切欠部７６Ｃが形成されている。
そして、第２側面７２には、凹部７５に光学補償素子６及び光学補償素子調整部材８が収納され、凹部７５を閉塞するように反射型光変調装置４が固定される。
以上のように、各部材である、ワイヤーグリッド３、ワイヤーグリッド調整部材３１、反射型光変調装置４、偏光板５、偏光板調整部材５１にて各開口部７４Ａ〜７４Ｃがそれぞれ閉塞されることで、取付部材７内部の空間が略密閉される。 Then, on the outer surface of the attachment member 7, a first support surface 77A (FIG. 4) is connected to the first fixing cutout portion 76A and the second fixing cutout portion 76B and extends in a direction parallel to the third side surface 73. (See (A)) and a second support surface 77B (see FIGS. 3 and 4B) are respectively formed.
The first support surface 77A and the second support surface 77B have a substantially cylindrical first protrusion 78A (see FIG. 4A) and a second protrusion 78B protruding in a direction substantially orthogonal to the third side surface 73. (See FIGS. 3 and 4B).
Further, as shown in FIG. 2 or 3, an operation notch 76 C that communicates the inside and outside of the recess 75 along the vertical direction is formed on the top surface of the mounting member 7.
In the second side surface 72, the optical compensation element 6 and the optical compensation element adjustment member 8 are accommodated in the recess 75, and the reflective light modulation device 4 is fixed so as to close the recess 75.
As described above, the openings 74 A to 74 C are respectively closed by the wire grid 3, the wire grid adjustment member 31, the reflective light modulation device 4, the polarizing plate 5, and the polarizing plate adjustment member 51. Thus, the space inside the attachment member 7 is substantially sealed.

〔ワイヤーグリッド調整部材の構成〕
ワイヤーグリッド調整部材３１は、ワイヤーグリッド３を保持しつつ、取付部材７に対して係止される。そして、ワイヤーグリッド調整部材３１は、ワイヤーグリッド３の姿勢調整に利用される。
このワイヤーグリッド調整部材３１は、図５に示すように、板金加工が施されることにより、基体３１１に対して操作部３２が一体形成されたものである。
基体３１１は、平面視略矩形状の板体で構成されている。そして、この基体３１１には、略中央部分に光束を通過させるための開口部（図示略）が形成され、当該開口部を閉塞するようにワイヤーグリッド３が固定される。 [Configuration of wire grid adjustment member]
The wire grid adjusting member 31 is locked to the mounting member 7 while holding the wire grid 3. The wire grid adjustment member 31 is used for adjusting the posture of the wire grid 3.
As shown in FIG. 5, the wire grid adjusting member 31 is obtained by integrally forming the operation portion 32 with respect to the base body 311 by performing sheet metal processing.
The base 311 is configured by a plate body having a substantially rectangular shape in plan view. The base 311 is formed with an opening (not shown) for allowing the light beam to pass through substantially the center, and the wire grid 3 is fixed so as to close the opening.

ワイヤーグリッド調整部材３１は、取付部材７の天面方向に、略長方形状で延出し、さらにその一部が突出した操作部３２が形成され、操作部内には略円弧形状の長孔である長穴３３が形成されている。また下部中央には略長方形の長穴３４が形成されている。
ワイヤーグリッド３の位置調整は、ワイヤーグリッド調整部材３１の長穴３３に、第１側面７１の突起部７１１を遊嵌状態で挿入し、長穴３４に突起部７１２を遊嵌状態で挿入する。操作部３２を使用して長穴３３に沿って、位置調整をする。尚、突起部７１３は傾斜を規制するものである。 The wire grid adjusting member 31 is formed in a substantially rectangular shape in the top surface direction of the mounting member 7, and further, an operation part 32 protruding partly is formed, and the operation part 32 is a long hole having a substantially arc shape. A hole 33 is formed. A substantially rectangular slot 34 is formed in the lower center.
The position adjustment of the wire grid 3 is performed by inserting the protruding portion 711 of the first side surface 71 into the elongated hole 33 of the wire grid adjusting member 31 in a loosely fitted state and inserting the protruding portion 712 into the elongated hole 34 in an loosely fitted state. The position is adjusted along the long hole 33 using the operation unit 32. The protrusion 713 regulates the inclination.

〔偏光板調整部材の構成〕
偏光板調整部材５１は、偏光板５を保持しつつ、取付部材７に対して係止される。そして、偏光板調整部材５１は、偏光板５の姿勢調整に利用される。
この偏光板調整部材５１は、図６に示すように、板金加工が施されることにより、基体５１１に対して取付部材７の天面方向に略長方形状に延出した突出部５２と、天面方向に延出し、さらに横方向に延出する操作部５４が一体形成されたものである。突出部５２内には孔５３が形成されている。
基体５１１は、平面視略矩形状の板体で構成されている。そして、この基体５１１には、略中央部分に光束を通過させるための開口部（図示略）が形成され、当該開口部を閉塞するように偏光板５が固定される。 [Configuration of polarizing plate adjusting member]
The polarizing plate adjustment member 51 is locked to the mounting member 7 while holding the polarizing plate 5. The polarizing plate adjusting member 51 is used for adjusting the posture of the polarizing plate 5.
As shown in FIG. 6, the polarizing plate adjusting member 51 is provided with a protruding portion 52 that extends in a substantially rectangular shape in the top surface direction of the mounting member 7 with respect to the base 511 by performing sheet metal processing. An operation portion 54 extending in the surface direction and further extending in the lateral direction is integrally formed. A hole 53 is formed in the protrusion 52.
The base 511 is configured by a plate body having a substantially rectangular shape in plan view. In the base 511, an opening (not shown) for allowing the light beam to pass is formed in a substantially central portion, and the polarizing plate 5 is fixed so as to close the opening.

偏光板５の調整は、偏光板調整部材５１の孔５３に、第３側面７３の突起部７３１を遊嵌状態で挿入し、操作部５４を使用して位置調整をする。 Adjustment of the polarizing plate 5 is performed by inserting the projection 731 of the third side surface 73 into the hole 53 of the polarizing plate adjustment member 51 in a loosely fitted state and using the operation unit 54 to adjust the position.

〔光学補償素子調整部材の構成〕
光学補償素子調整部材８は、光学補償素子６を保持しつつ、取付部材７に対して係止される。そして、光学補償素子調整部材８は、光学補償素子６の姿勢調整に利用される。
この光学補償素子調整部材８は、図３に示すように、板金加工が施されることにより、基体８１に対して第１腕部８２Ａ、第２腕部８２Ｂ、及び操作部８３が一体形成されたものである。
基体８１は、平面視略矩形状の板体で構成されている。そして、この基体８１には、略中央部分に光束を通過させるための開口部（図示略）が形成され、当該開口部を閉塞するように光学補償素子６が固定される。 [Configuration of optical compensation element adjusting member]
The optical compensation element adjusting member 8 is locked to the mounting member 7 while holding the optical compensation element 6. The optical compensation element adjusting member 8 is used for adjusting the attitude of the optical compensation element 6.
As shown in FIG. 3, the optical compensation element adjusting member 8 is subjected to sheet metal processing, whereby the first arm portion 82 A, the second arm portion 82 B, and the operation portion 83 are integrally formed with the base body 81. It is a thing.
The base body 81 is configured by a plate body having a substantially rectangular shape in plan view. The base 81 is formed with an opening (not shown) for allowing a light beam to pass through at a substantially central portion, and the optical compensation element 6 is fixed so as to close the opening.

図４は、取付部材７及び光学補償素子調整部材８の係止構造を説明するための図である。具体的に、図４（Ａ）は第１支持面７７Ａを含む領域を拡大した斜視図であり、図４（Ｂ）は第２支持面７７Ｂを含む領域を拡大した斜視図である。
第１腕部８２Ａ及び第２腕部８２Ｂは、取付部材７に対して傾斜軸Ａｘ（図３、図７参照）を中心として傾斜可能に軸支される部分である。
第１腕部８２Ａは、光学補償素子調整部材８が取付部材７の凹部７５内部に収納された状態で、第１固定用切欠部７６Ａを介して凹部７５内部から外部に突出する部分であり、図３に示すように、第１延出部８２１Ａと、第１軸部８２２Ａとを備える。
第１延出部８２１Ａは、図３中、基体８１の左上部分の端縁から基体８１の板面に沿って左側に延出する。
第１軸部８２２Ａは、第１延出部８２１Ａの先端部分が略９０°折り曲げられた部分であり、表裏を貫通する第１丸孔８２３Ａを有する。
そして、第１腕部８２Ａは、図４（Ａ）に示すように、第１固定用切欠部７６Ａを介して凹部７５内部から外部に突出した状態で、第１軸部８２２Ａが第１支持面７７Ａに対向し、第１丸孔８２３Ａに第１突起部７８Ａが挿通することで、取付部材７に対して係止される。 FIG. 4 is a view for explaining a locking structure of the attachment member 7 and the optical compensation element adjustment member 8. Specifically, FIG. 4A is an enlarged perspective view of an area including the first support surface 77A, and FIG. 4B is an enlarged perspective view of an area including the second support surface 77B.
The first arm portion 82A and the second arm portion 82B are portions that are pivotally supported with respect to the attachment member 7 so as to be tiltable about the tilt axis Ax (see FIGS. 3 and 7).
The first arm portion 82A is a portion protruding outside from the inside of the recess 75 via the first fixing cutout portion 76A in a state where the optical compensation element adjustment member 8 is housed in the recess 75 of the mounting member 7. As shown in FIG. 3, the first extending portion 821A and the first shaft portion 822A are provided.
The first extending portion 821A extends to the left along the plate surface of the base 81 from the edge of the upper left portion of the base 81 in FIG.
The first shaft portion 822A is a portion where the tip portion of the first extending portion 821A is bent by approximately 90 °, and has a first round hole 823A penetrating the front and back.
As shown in FIG. 4 (A), the first arm portion 82A protrudes outward from the inside of the recess 75 via the first fixing cutout portion 76A, and the first shaft portion 822A has the first support surface. The first protrusion 78A is inserted into the first round hole 823A so as to be opposed to 77A and locked to the attachment member 7.

第２腕部８２Ｂは、図３中、基体８１の右下部分の端縁に形成されたものであり、図３または図４に示すように、第１腕部８２Ａにおける第１延出部８２１Ａ及び第１軸部８２２Ａ（第１丸孔８２３Ａを含む）と略同様の第２延出部８２１Ｂ及び第２軸部８２２Ｂ（第２丸孔８２３Ｂを含む）を備える。
そして、第２腕部８２Ｂは、図４（Ｂ）に示すように、第２固定用切欠部７６Ｂを介して凹部７５内部から外部に突出した状態で、第２軸部８２２Ｂが第２支持面７７Ｂに対向し、第２丸孔８２３Ｂに第２突起部７８Ｂが挿通することで、取付部材７に対して係止される。 The second arm portion 82B is formed at the edge of the lower right portion of the base body 81 in FIG. 3, and as shown in FIG. 3 or 4, the first extension portion 821A in the first arm portion 82A. And a second extending portion 821B and a second shaft portion 822B (including the second round hole 823B) substantially the same as the first shaft portion 822A (including the first round hole 823A).
Then, as shown in FIG. 4B, the second arm portion 82B protrudes from the inside of the recess 75 via the second fixing cutout portion 76B, and the second shaft portion 822B has the second support surface. The second protrusion 78B is inserted into the second round hole 823B so as to be opposed to 77B and locked to the attachment member 7.

次に、上述した変調ユニット２Ａの製造方法について説明する。尚この取付順序は、都度決定するものである。
まず、図５に示すように、取付部材７の第１側面７１に対して、ワイヤーグリッド３が固定されたワイヤーグリッド調整部材３１を固定し、図６に示すように、取付部材７の第３側面７３に対して、偏光板５が固定された偏光板調整部材５１を固定する。
また、図３に示すように、光学補償素子６が固定された光学補償素子調整部材８を凹部７５内部に収納し、第１腕部８２Ａ，第２腕部８２Ｂを第１突出部７８Ａ，第２突出部７８Ｂに係止する。さらに、第２側面７２に対して、反射型光変調装置４を固定する。 Next, a method for manufacturing the above-described modulation unit 2A will be described. This mounting order is determined each time.
First, as shown in FIG. 5, the wire grid adjusting member 31 to which the wire grid 3 is fixed is fixed to the first side surface 71 of the mounting member 7, and as shown in FIG. 6, the third of the mounting member 7. The polarizing plate adjustment member 51 to which the polarizing plate 5 is fixed is fixed to the side surface 73.
As shown in FIG. 3, the optical compensation element adjusting member 8 to which the optical compensation element 6 is fixed is housed in the recess 75, and the first arm portion 82A and the second arm portion 82B are connected to the first projecting portion 78A and the first projection portion 78A. 2 Locks to the protrusion 78B. Further, the reflection type light modulation device 4 is fixed to the second side surface 72.

次に、光源装置を利用して、ワイヤーグリッド３に向けて姿勢調整用の光束を出射させる。
そして、反射型光変調装置４にて変調され、ワイヤーグリッド３、偏光板５、及び投射レンズ（図示略）を介してスクリーンに投射された当該投射画像のコントラストが最大となるように、各部材の姿勢調整を実施する。 Next, a light beam for posture adjustment is emitted toward the wire grid 3 using the light source device.
Each member is modulated such that the contrast of the projection image modulated by the reflective light modulation device 4 and projected onto the screen via the wire grid 3, the polarizing plate 5, and the projection lens (not shown) is maximized. Perform posture adjustment.

図７は、光学補償素子の姿勢調整を説明するための図、図８はワイヤーグリッドの姿勢調整を説明するための図であり、偏光板の姿勢調整を説明するための図である。 FIG. 7 is a diagram for explaining the attitude adjustment of the optical compensation element, and FIG. 8 is a diagram for explaining the attitude adjustment of the wire grid, and is a diagram for explaining the attitude adjustment of the polarizing plate.

まず、光学補償素子６の調整は、図７に示すように、操作用切欠部７６Ｃを介して取付部材７の外部に突出した操作部８３を第２側面７２に直交する方向に移動させることで、傾斜軸Ａｘを中心として光学補償素子調整部材８（光学補償素子６）を傾斜させる。
そして、上述したように光学補償素子６を傾斜させ、投射画像のコントラストが最大となる位置（反射型光変調装置４の液晶材料や配向状態に応じて光学補償素子６の光学軸の方位が適正となる位置）に位置付けた後、以下に示すように、取付部材７に対して光学補償素子調整部材８を固定する。
すなわち、操作用切欠部７６Ｃと操作部８３との隙間、第１突出部７８Ａ，第２突出部７８Ｂと第１丸孔８２３Ａ，第２丸孔８２３Ｂとの隙間、及び第１支持面７７Ａ，第２支持面７７Ｂと第１軸部８２２Ａ，第２軸部８２２Ｂとの隙間に接着剤を充填し、硬化させる。 First, the adjustment of the optical compensation element 6 is performed by moving the operation portion 83 protruding outside the attachment member 7 through the operation cutout portion 76C in a direction orthogonal to the second side surface 72, as shown in FIG. The optical compensation element adjustment member 8 (optical compensation element 6) is tilted about the tilt axis Ax.
Then, as described above, the optical compensation element 6 is tilted, and the position where the contrast of the projected image is maximized (the azimuth of the optical axis of the optical compensation element 6 is appropriate according to the liquid crystal material and the orientation state of the reflective light modulation device 4). Then, as shown below, the optical compensation element adjusting member 8 is fixed to the mounting member 7.
That is, the gap between the operation notch 76C and the operation portion 83, the gap between the first protrusion 78A, the second protrusion 78B, the first round hole 823A, the second round hole 823B, and the first support surface 77A, the first 2 Adhesive is filled in the gap between the support surface 77B and the first shaft portion 822A and the second shaft portion 822B and cured.

次に、ワイヤーグリッド３の調整は、図８に示すように紫外線硬化型の接着剤が塗布されたワイヤーグリッド調整部材３１と取付部材７とを、取付部材７がワイヤーグリッド調整部材３１に取り付けられた状態で、冶具で取付部材７を保持しながら設置する。すなわち、操作部３２を移動させコントラストが最大になる位置に位置つけた後、突起部７１１と長穴３３との隙間に接着剤を充填し、硬化させる。 Next, the wire grid 3 is adjusted by attaching the wire grid adjustment member 31 and the attachment member 7 coated with an ultraviolet curable adhesive as shown in FIG. 8 to the wire grid adjustment member 31. In this state, it is installed while holding the attachment member 7 with a jig. That is, after the operation unit 32 is moved and positioned at a position where the contrast is maximized, an adhesive is filled in the gap between the projection 711 and the elongated hole 33 and cured.

同様に、偏光板の調整は、図９に示すように紫外線硬化型の接着剤が塗布された偏光板調整部材５１と取付部材７とを、取付部材７が偏光板調整部材５１に取り付けられた状態で、冶具で取付部材７を保持しながら設置する。すなわち、操作部５４を移動させコントラストが最大になる位置に位置つけた後、突起部７３１と孔５３との隙間に接着剤を充填し、硬化させる。
以上の工程により、変調ユニット２Ａが製造される。 Similarly, as shown in FIG. 9, the polarizing plate is adjusted by attaching the polarizing plate adjusting member 51 and the mounting member 7 coated with an ultraviolet curable adhesive, and the mounting member 7 to the polarizing plate adjusting member 51. In the state, it installs, holding the attachment member 7 with a jig. That is, after the operation unit 54 is moved and positioned at a position where the contrast is maximized, an adhesive is filled in the gap between the projection 731 and the hole 53 and cured.
The modulation unit 2A is manufactured through the above steps.

〔本実施形態の効果〕
以上のような本実施形態のプロジェクター１によれば、以下の効果を奏することができる。
ワイヤーグリッド３は、ワイヤーグリッド調整部材３１を貼り付けるだけの簡易な構成で、取付部材７との間で取付位置の調整が容易にできる。
また、光学補償素子６、および、偏光板５も偏光板調整部材５１を貼り付けるだけの簡易な構成で、取付部材７との間で取付位置の調整が容易にできる。 [Effect of this embodiment]
According to the projector 1 of the present embodiment as described above, the following effects can be obtained.
The wire grid 3 can be easily adjusted with respect to the mounting member 7 with a simple configuration by simply attaching the wire grid adjusting member 31.
Further, the optical compensation element 6 and the polarizing plate 5 can be easily adjusted with respect to the mounting member 7 with a simple configuration in which the polarizing plate adjusting member 51 is attached.

取付部材７に形成された３つの開口部７４Ａ，７４Ｂ，７４Ｃがそれぞれ反射型光変調装置４、ワイヤーグリッド３およびワイヤーグリッド調整部材３１、偏光板５および偏光板調整部材５１により閉塞され、取付部材７内部の空間が密閉されている。そして、この密閉空間内に反射型光変調装置４の反射面が配置されることとなるので、反射面への粉塵の付着を防ぐことができ、反射面に付着した粉塵が投射画像中に影として映るなどの投射画像の劣化を防止できる。 Three openings 74A, 74B, and 74C formed in the mounting member 7 are respectively closed by the reflection type light modulation device 4, the wire grid 3 and the wire grid adjusting member 31, the polarizing plate 5 and the polarizing plate adjusting member 51, and the mounting member. 7 The space inside is sealed. And since the reflective surface of the reflection type light modulation device 4 will be arrange | positioned in this sealed space, adhesion of the dust to a reflective surface can be prevented, and the dust adhering to a reflective surface will be shadowed in a projection image. It is possible to prevent deterioration of the projected image such as being projected as

またワイヤーグリッド調整部材３１、偏光板調整部材５１、光学補償素子調整部材８の操作部を同一方向とするため、３部品の調整を同方向から簡単に調整できる。
また、各調整部材の操作部を簡易な形状にすることによって、取付部材７の構造の簡素化が図れる。 Moreover, since the operation parts of the wire grid adjustment member 31, the polarizing plate adjustment member 51, and the optical compensation element adjustment member 8 are in the same direction, the adjustment of the three components can be easily adjusted from the same direction.
Moreover, the structure of the attachment member 7 can be simplified by making the operation part of each adjustment member into a simple shape.

〔実施形態の変形〕
なお、本発明は前述の実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。 [Modification of Embodiment]
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.

上記実施形態の光源装置としては、放電発光型や、レーザーダイオード、ＬＥＤ(Light Emitting Diode)、有機ＥＬ(Electro Luminescence)素子、シリコン発光素子等の各種固体発光素子の光源装置を採用してもよい。
また、上記実施形態では、光源装置からの光を色分離光学装置にて３つの色光に分離していたが、色分離光学装置を省略し、３つの色光をそれぞれ射出する３つの固体発光素子を光源装置として構成してもよい。 As the light source device of the above-described embodiment, a light source device of various solid light emitting elements such as a discharge light emitting type, a laser diode, an LED (Light Emitting Diode), an organic EL (Electro Luminescence) element, and a silicon light emitting element may be adopted. .
In the above embodiment, the light from the light source device is separated into three color lights by the color separation optical device. However, the color separation optical device is omitted, and three solid-state light emitting elements that respectively emit three color lights are provided. You may comprise as a light source device.

さらに、プロジェクター１は、反射型光変調装置４を３つ備える三板式のプロジェクターで構成していたが、これに限らず、反射型光変調装置４を２つ備えるプロジェクターや、反射型光変調装置４を４つ以上備えるプロジェクターとして構成しても構わない。
この際、プロジェクター１は、ワイヤーグリッド３および取付部材７も反射型光変調装置４と同様の個数分、備えることとなる。
上記実施形態のプロジェクター１は、スクリーンを観察する方向から投射を行うフロントタイプのプロジェクターや、スクリーンを観察する方向とは反対側から投射を行うリアタイプのプロジェクターに適用可能である。 Further, the projector 1 is configured by a three-plate projector including three reflection type light modulation devices 4. However, the projector 1 is not limited to this, and a projector including two reflection type light modulation devices 4 or a reflection type light modulation device. You may comprise as a projector provided with 4 or more four.
At this time, the projector 1 includes the same number of wire grids 3 and attachment members 7 as the reflection type light modulation device 4.
The projector 1 according to the above-described embodiment can be applied to a front type projector that performs projection from the direction in which the screen is observed and a rear type projector that performs projection from the side opposite to the direction in which the screen is observed.

本発明のプロジェクターは、反射型光変調装置の位置調整を容易にできるため、プレゼンテーションやホームシアター等に利用できる。 Since the projector of the present invention can easily adjust the position of the reflective light modulation device, it can be used for presentations, home theaters, and the like.

１…プロジェクター、２…投射ユニット、３…ワイヤーグリッド（反射型偏光板）、４…反射型光変調装置、５…偏光板、６…光学補償素子（光学補償板）、７…取付部材、８…光学補償素子調整部材（光学補償板調整部材）、３１…ワイヤーグリッド調整部材（反射型偏光板調整部材）、３２…操作部、３３，３４…長穴、５１…偏光板調整部材、５２…突出部、５３…孔、５４…操作部、７１…第１側面、７２…第２側面、７３…第３側面、７４…天面部、７５…凹部、７６Ａ，７６Ｂ…固定用切欠部、７６Ｃ…操作用切欠部、７７Ａ…第１支持面、７７Ｂ…第２支持面、７１１，７１２，７１３，７３１・・・突起部、Ａｘ…傾斜軸。 DESCRIPTION OF SYMBOLS 1 ... Projector, 2 ... Projection unit, 3 ... Wire grid (reflection type polarizing plate), 4 ... Reflection type light modulation apparatus, 5 ... Polarizing plate, 6 ... Optical compensation element (optical compensation plate), 7 ... Mounting member, 8 ... optical compensation element adjustment member (optical compensation plate adjustment member), 31 ... wire grid adjustment member (reflection type polarizing plate adjustment member), 32 ... operation unit, 33, 34 ... long hole, 51 ... polarizing plate adjustment member, 52 ... Projection, 53 ... hole, 54 ... operation part, 71 ... first side, 72 ... second side, 73 ... third side, 74 ... top surface, 75 ... concave, 76A, 76B ... fixing notch, 76C ... Operation notch, 77A: first support surface, 77B: second support surface, 711, 712, 713, 731 ... projection, Ax: inclined axis.

Claims

A plurality of reflective light modulators for modulating a plurality of colored lights according to image information for each colored light;
A plurality of reflection-type polarizing plates for polarization-separating the light beam irradiated to the reflection-type light modulation device and the light beam modulated by the reflection-type light modulation device;
A polarizing plate that transmits polarized light having substantially the same polarization direction as that of the reflected polarized light by modulated the reflective polarizer by the reflection-type light modulation device,
A reflective polarizing plate adjusting member for holding the reflective polarizing plate;
The reflective polarizing, the reflection type light modulation devices, and and a mounting member having a three sided supporting the polarizing plate, respectively,
The reflective polarizing plate adjustment member is
A first operating portion provided with a first opening of a long hole at an upper portion and inclined about a predetermined axis;
A projector having a second opening for regulating inclination at a lower portion .

The projector according to claim 1.
On the first side surface of the mounting member,
A first projection engaging said first opening of said reflective polarizer adjustment member,
Projector, characterized in that the second protrusion to be engaged with the second opening, is provided.

The projector according to claim 1 or 2 ,
A polarizing plate adjusting member that holds the polarizing plate and is attached so as to be tiltable around a predetermined axis with respect to the mounting member;
An optical compensator for optically compensating the reflective light modulator ;
Wherein holding the optical compensator, and an optical compensation plate adjustment member mounted tiltably about a predetermined axis relative to said mounting member,
The optical compensator adjusting member is
A second operating portion that is inclined about a predetermined axis at the top;
An engagement hole is provided, and a pair of arm portions projecting in directions away from each other in plan view, and the polarizing plate adjusting member has
The top end, and a protruding portion which third opening is provided,
The other end, the projector characterized in that it comprises a third operation portion for tilting about a predetermined axis, a.

The projector according to claim 3.
A third protrusion that engages with the third opening of the polarizing plate adjusting member is formed on the third side surface of the mounting member .
On the outer surface of the mounting member, a pair of support surfaces that are parallel to each other in plan view are formed,
The pair of support surfaces are formed with a pair of protrusions protruding in directions away from each other in plan view,
Wherein the top surface of the mounting member, the optical compensator the operation notched portion makes projects outside of the second operating unit of the mounting member of the adjusting member is formed,
The projector according to claim 1, wherein the optical compensator adjusting member is locked to the mounting member .

The projector according to claim 3 or 4,
The optical compensation plate adjustment member, the reflective polarizer adjustment member and the polarizing plate adjusting member is a projector, characterized in that it is adjustable from the top surface direction of the mounting member.