JP3197798B2 - Liquid crystal panel adjustment mechanism and liquid crystal projector using the adjustment mechanism - Google Patents
Liquid crystal panel adjustment mechanism and liquid crystal projector using the adjustment mechanismInfo
- Publication number
- JP3197798B2 JP3197798B2 JP22132195A JP22132195A JP3197798B2 JP 3197798 B2 JP3197798 B2 JP 3197798B2 JP 22132195 A JP22132195 A JP 22132195A JP 22132195 A JP22132195 A JP 22132195A JP 3197798 B2 JP3197798 B2 JP 3197798B2
- Authority
- JP
- Japan
- Prior art keywords
- movable frame
- liquid crystal
- adjustment
- fixed frame
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Liquid Crystal (AREA)
- Projection Apparatus (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、液晶プロジェクタ
等の投写装置に於いて、正確な画像を照射する為に、液
晶パネルの上下左右移動及び回転を調整する調整機構及
び該調整機構を用いた液晶プロジェクタに関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projection apparatus such as a liquid crystal projector, which uses an adjustment mechanism for adjusting the vertical and horizontal movement and rotation of a liquid crystal panel in order to irradiate an accurate image, and the adjustment mechanism. The present invention relates to a liquid crystal projector.
【０００２】[0002]
【従来の技術】液晶プロジェクタ等の投写装置は、周知
の如く、３原色であるＲ、Ｇ、Ｂに対応した液晶パネル
を具え、これを強い光で照射し、該液晶パネルを通過し
た光束を合成して、スクリーンに画像を映すものである
(図６参照)。スクリーン上に色ずれのない正確な画像を
照射するには、各液晶パネルの上下、左右、回転を調整
して、各色光を正確に重畳する必要があり、出願人は以
前に、図８及び図９に示す調整機構を開示している(特
開平５−２０３８９９号参照)。これは、液晶パネル
(７)が取り付けられる可動枠(２)と、固定枠(１)を互い
に対向させて設け、可動枠(２)を固定枠(１)に対して、
上下左右に移動可能とし、かつ固定枠(１)に対向する面
内に於いて、回転可能としたものである。可動枠(２)か
らは液晶パネル(７)が取り付けられる取付板(90)(90)が
突出し、該取付板(90)が突出した面の裏側からは、左右
に延びた調整板(91)が突出する。2. Description of the Related Art As is well known, a projection apparatus such as a liquid crystal projector includes a liquid crystal panel corresponding to the three primary colors R, G, and B, irradiates the liquid crystal panel with strong light, and converts a light beam passing through the liquid crystal panel. Combine and project the image on the screen
(See FIG. 6). In order to irradiate an accurate image with no color shift on the screen, it is necessary to adjust the top, bottom, left and right, and rotation of each liquid crystal panel so that each color light is accurately superimposed. An adjusting mechanism shown in FIG. 9 is disclosed (see Japanese Patent Application Laid-Open No. 5-203899). This is the LCD panel
A movable frame (2) to which (7) is attached and a fixed frame (1) are provided to face each other, and the movable frame (2) is
It is movable up, down, left and right, and is rotatable in a plane facing the fixed frame (1). A mounting plate (90) (90) to which the liquid crystal panel (7) is mounted protrudes from the movable frame (2), and an adjustment plate (91) extending left and right from the back side of the surface where the mounting plate (90) protrudes. Protrudes.
【０００３】固定枠(１)からは３枚の支持板(92)(92)(9
2)が、調整板(91)の下方から、調整板(91)に平行に突出
している。左右の支持板(92)(92)にはビス孔(81)(81)が
開設され、中央の支持板(92)からは調整板(91)に向けて
偏心シャフト(３)が突出している。該偏心シャフト(３)
は、調整板(91)に前後に延びて開設された調整孔(93)の
左右縁に接して嵌まり、該調整孔(93)の左右両側に於い
て調整板(91)には、ビス孔(81)(81)に対向して左右に延
びた長孔(94)(94)が開設されている。該長孔(94)(94)に
は、ビス孔(81)(81)に螺合する調整ビス(４)が嵌まり、
各調整ビス(４)と支持板(92)との間には、調整の作業性
及び可動枠(２)のガタ防止に鑑みて、圧縮バネ(９)が介
装されている。該圧縮バネ(９)により、可動枠(２)は調
整ビス(４)の進行方向に付勢されている。From the fixed frame (1), three support plates (92) (92) (9)
2) protrudes from below the adjusting plate (91) in parallel with the adjusting plate (91). Screw holes (81) and (81) are formed in the left and right support plates (92) and (92), and the eccentric shaft (3) projects from the center support plate (92) toward the adjustment plate (91). . The eccentric shaft (3)
Are fitted in contact with the left and right edges of an adjustment hole (93) extending forward and backward on the adjustment plate (91), and screws are provided on the adjustment plate (91) on both left and right sides of the adjustment hole (93). Elongated holes (94) (94) are provided extending left and right opposite to the holes (81) (81). An adjusting screw (4) screwed into the screw hole (81) (81) is fitted into the long hole (94) (94).
A compression spring (9) is interposed between each adjustment screw (4) and the support plate (92) in view of the workability of the adjustment and the prevention of play of the movable frame (2). The movable frame (2) is urged by the compression spring (9) in the traveling direction of the adjusting screw (4).
【０００４】可動枠(２)を左右に調整するには、偏心シ
ャフト(３)を回転させる。該偏心シャフト(３)は調整孔
(93)の左右縁を押し、可動枠(２)は圧縮バネ(９)の押圧
力による摩擦力に抗して、長孔(94)(94)に沿って左右に
移動する。可動枠(２)を固定枠(１)に対向する面内にて
回転させるには、何れか一方の調整ビス(４)を回転す
る。可動枠(２)は他方の調整ビス(４)を支点に回転す
る。可動枠(２)を上下に調整するには、両方の調整ビス
(４)(４)を同じ角度だけ回転させる。可動枠(２)は調整
ビス(４)(４)の回転角に応じた変位量だけ上下に移動す
る。実際の調整は、図６に示す液晶プロジェクタを照射
し、スクリーン(73)上に写し出された画像を見ながら行
なう。To adjust the movable frame (2) right and left, the eccentric shaft (3) is rotated. The eccentric shaft (3) has an adjustment hole
The left and right edges of (93) are pushed, and the movable frame (2) moves left and right along the long holes (94) and (94) against the frictional force caused by the pressing force of the compression spring (9). To rotate the movable frame (2) in the plane facing the fixed frame (1), one of the adjusting screws (4) is rotated. The movable frame (2) rotates around the other adjustment screw (4) as a fulcrum. To adjust the movable frame (2) up and down, use both adjustment screws.
(4) Rotate (4) by the same angle. The movable frame (2) moves up and down by a displacement amount corresponding to the rotation angle of the adjusting screws (4) and (4). The actual adjustment is performed while irradiating the liquid crystal projector shown in FIG. 6 and viewing the image projected on the screen (73).
【０００５】[0005]
【発明が解決しようとする課題】上記構成では、圧縮バ
ネ(９)の両端が、夫々調整板(91)の裏面と支持板(92)の
表面に接している。従って、偏心シャフト(３)を回転さ
せて、可動枠(２)を左右方向に調整せんとするときに、
圧縮バネ(９)と調整板(91)の裏面が擦れて、摺動負荷と
なり、微妙な調整が妨げられる。本発明は、可動枠の左
右調整時に於ける摺動負荷を軽減し、調整を行ないやす
くすることを目的とする。In the above arrangement, both ends of the compression spring (9) are in contact with the back surface of the adjusting plate (91) and the surface of the support plate (92), respectively. Therefore, when rotating the eccentric shaft (3) to adjust the movable frame (2) in the left-right direction,
The compression spring (9) and the back surface of the adjustment plate (91) rub against each other, causing a sliding load, and hindering fine adjustment. SUMMARY OF THE INVENTION It is an object of the present invention to reduce a sliding load at the time of right and left adjustment of a movable frame and facilitate adjustment.
【０００６】[0006]
【課題を解決する為の手段】 液晶パネルの調整機構に
於いて、調整ビス(４)には鍔(40)が設けられ、調整ビス
(４)は該鍔(40)と頭部とで固定枠(１)を挟持し、可動枠
(２)と固定枠(１)との間には、可動枠(２)を調整ビス
(４)進行方向に付勢する引張バネ(５)が、調整ビス(４)
から離間して設けられている。また、固定枠(１)の背面
と、可動枠(２)の正面とは接している。Means for Solving the Problems In the adjustment mechanism of the liquid crystal panel, the adjustment screw (4) is provided with a flange (40), and the adjustment screw is provided.
(4) The fixed frame (1) is sandwiched between the flange (40) and the head, and the movable frame
Adjustable screw (2) between (2) and fixed frame (1)
(4) The tension spring (5) for urging in the traveling direction is used for adjusting screw (4).
It is provided apart from the. The back of the fixed frame (1) is in contact with the front of the movable frame (2).
【０００７】[0007]
【作用及び効果】可動枠(２)は調整ビス(４)から離間し
た位置に設けられた引張バネ(５)により、付勢力を与え
られている。従来は前記のように、圧縮バネ(９)の一端
が、調整板(91)の裏面に接しているので、可動枠(２)を
左右方向に調整するときに、圧縮バネ(９)と調整板(91)
が擦れて、摺動負荷となり、調整がしずらい。然るに、
本発明では、従来のように圧縮バネ(９)と調整板(91)が
擦れることはないので、調整の困難さを緩和できる。更
に、可動枠(２)と固定枠(１)は面が接しているので、可
動枠(２)は固定枠(１)に接したままで、上下左右方向及
び回転方向に摺動する。従って、調整時に、可動枠(２)
が光軸方向に振れることはなく、調整作業が安定して行
なえる。[Operation and Effect] The movable frame (2) is biased by a tension spring (5) provided at a position separated from the adjusting screw (4). Conventionally, as described above, since one end of the compression spring (9) is in contact with the back surface of the adjustment plate (91), when adjusting the movable frame (2) in the left-right direction, the compression spring (9) is adjusted. Board (91)
Is rubbed, causing a sliding load, making it difficult to adjust. Anyway,
In the present invention, since the compression spring (9) and the adjusting plate (91) do not rub as in the related art, difficulty in adjustment can be reduced. Furthermore, since the movable frame (2) and the fixed frame (1) are in contact with each other, the movable frame (2) slides in the up, down, left, right, and rotation directions while being in contact with the fixed frame (1). Therefore, at the time of adjustment, the movable frame (2)
Does not swing in the optical axis direction, and the adjustment work can be performed stably.
【０００８】[0008]
【発明の実施の形態】以下、本発明の一例につき、図を
用いて詳述する。図１は、固定枠(１)と可動枠(２)の分
解斜視図である。固定枠(１)と可動枠(２)は、ともに板
金を折曲して成り、可動枠(２)を挟むように、固定枠
(１)と液晶パネル(７)が取り付けられる。固定枠(１)と
可動枠(２)の中央部には、夫々に開口(16)(25)が開設さ
れ、液晶パネル(７)の画像は該開口(16)(25)を通って照
射される。固定枠(１)の両側部には、第１バネ掛け片(5
0)(50)が設けられ、該バネ掛け片(50)(50)の下方には、
貫通孔(51)(51)が開設されている。可動枠(２)上には、
貫通孔(51)(51)に対応する部位に、第２バネ掛け片(52)
(52)が設けられ、固定枠(１)と可動枠(２)が重ね合わさ
った状態で、第２バネ掛け片(52)(52)は貫通孔(51)(51)
を通り、第１バネ掛け片(50)と第２バネ掛け片(52)との
間に、後記する引張バネ(５)が掛けられる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is an exploded perspective view of a fixed frame (1) and a movable frame (2). The fixed frame (1) and the movable frame (2) are both formed by bending sheet metal, and the fixed frame is sandwiched by the movable frame (2).
(1) and a liquid crystal panel (7) are attached. Openings (16) and (25) are opened at the center of the fixed frame (1) and the movable frame (2), respectively, and the image of the liquid crystal panel (7) is irradiated through the openings (16) and (25). Is done. On both sides of the fixed frame (1), the first spring hook pieces (5
0) (50) are provided, and below the spring hook pieces (50) (50),
Through holes (51) (51) are opened. On the movable frame (2),
At the portions corresponding to the through holes (51) (51), the second spring hook pieces (52)
(52) is provided, and in a state where the fixed frame (1) and the movable frame (2) are overlapped, the second spring hook pieces (52) and (52) are through holes (51) and (51).
, A tension spring (5) described later is hung between the first spring hook piece (50) and the second spring hook piece (52).
【０００９】固定枠(１)の上側両端部からは、夫々第１
調整板(10)(10)が可動枠(２)に向けて突出し、固定枠
(１)の中央部で、光軸寄りの部位からは前記第１調整板
(10)(10)とは反対方向に、第２調整板(11)が突出する。
各第１調整板(10)には、左右に延びた長孔(12)が開設さ
れ、長孔(12)の中央部は、第１調整板(10)の可動枠(２)
側の端縁に臨んだ切欠き(13)に連続している。第２調整
板(11)上には、可動枠(２)の左右調整の為の偏心シャフ
ト(３)が回転自在に設けられている。偏心シャフト(３)
は、第２調整板(11)との取付部が、シャフト中心から偏
心しているものである(図４参照)。尚、第１調整板(10)
(10)の間から、表面に突起(15)(15)を設けた第３調整板
(14)が、第２調整板(11)と平行に突出しているが、これ
は後記するように光軸に対する液晶パネル(７)の傾き角
を変える為のものである。From the upper end portions of the fixed frame (1),
The adjustment plates (10) (10) project toward the movable frame (2),
At the center of (1), the first adjustment plate is
(10) The second adjustment plate (11) protrudes in the direction opposite to (10).
Each first adjusting plate (10) is provided with a long hole (12) extending left and right, and a central portion of the long hole (12) is provided with a movable frame (2) of the first adjusting plate (10).
Notch (13) facing the side edge. An eccentric shaft (3) for right and left adjustment of the movable frame (2) is rotatably provided on the second adjustment plate (11). Eccentric shaft (3)
In the figure, the mounting portion with the second adjustment plate (11) is eccentric from the center of the shaft (see FIG. 4). In addition, the first adjustment plate (10)
Third adjustment plate provided with protrusions (15) and (15) on the surface from between (10)
(14) protrudes in parallel with the second adjustment plate (11), which is for changing the inclination angle of the liquid crystal panel (7) with respect to the optical axis, as described later.
【００１０】可動枠(２)の上側両端部からは、第１支持
板(20)(20)が液晶パネル(７)に向けて突出し、可動枠
(２)の上側中央部からは、固定枠(１)に向けて第２支持
板(21)が突出している。各第１支持板(20)にはビス孔(2
2)が開設され、該ビス孔(22)の内側には液晶パネル取付
け孔(23)が開設されている。液晶パネル(７)は図示省略
したビスにより、液晶パネル取付け孔(23)に取り付けら
れる。第２支持板(21)の中央部には、偏心シャフト(３)
の径に略等しい幅の調整孔(24)が前後に延びて開設され
ている。From both upper ends of the movable frame (2), first support plates (20) project toward the liquid crystal panel (7).
A second support plate (21) protrudes from the upper central portion of (2) toward the fixed frame (1). Each first support plate (20) has a screw hole (2
2) is opened, and a liquid crystal panel mounting hole (23) is opened inside the screw hole (22). The liquid crystal panel (7) is mounted in the liquid crystal panel mounting hole (23) by screws (not shown). An eccentric shaft (3) is provided at the center of the second support plate (21).
An adjustment hole (24) having a width substantially equal to the diameter of the hole extends in the front-rear direction and is opened.
【００１１】固定枠(１)の第１調整板(10)の長孔(12)に
は、調整ビス(４)が嵌まる。該調整ビス(４)には、鍔(4
0)が固定されて取り付けられ、該鍔(40)と調整ビス(４)
の頭部との間で、第１調整板(10)が挟持される。調整ビ
ス(４)は、第１調整板(10)の側方から、切欠き(13)を通
って長孔(12)に嵌合する。固定枠(１)を可動枠(２)に取
り付けるには、まず偏心シャフト(３)を、第２支持板(2
1)の調整孔(24)に嵌めた後に、可動枠(２)を一旦固定枠
(１)に沿って下げる。調整ビス(４)をその頭部と鍔(40)
との間で、第１調整板(10)を挟むようにして、切欠き(1
3)を通って、長孔(12)に取り付ける。固定枠(１)を少し
引き上げて、ビス孔(22)を調整ビス(４)に螺合させ、取
付けが完了する。調整ビス(４)が、その頭部と鍔(40)で
第１調整板(10)を挟むように取り付けられているから、
調整ビス(４)の第１調整板(10)に対する垂直度が確保さ
れるとともに、調整ビス(４)の上下のガタ付きが防止さ
れる。An adjusting screw (4) fits into the elongated hole (12) of the first adjusting plate (10) of the fixed frame (1). The adjustment screw (4) has a flange (4
0) is fixedly attached, and the collar (40) and the adjusting screw (4)
The first adjustment plate (10) is sandwiched between the head and the first adjustment plate. The adjusting screw (4) fits into the elongated hole (12) through the notch (13) from the side of the first adjusting plate (10). To attach the fixed frame (1) to the movable frame (2), first attach the eccentric shaft (3) to the second support plate (2).
After fitting in the adjustment hole (24) of (1), the movable frame (2) is temporarily fixed
Lower along (1). Adjusting screw (4) with its head and collar (40)
With the notch (1) so as to sandwich the first adjustment plate (10)
Pass through 3) and attach to slot (12). The fixing frame (1) is pulled up a little, and the screw hole (22) is screwed into the adjusting screw (4) to complete the mounting. Since the adjusting screw (4) is attached so as to sandwich the first adjusting plate (10) between the head and the flange (40),
The verticality of the adjustment screw (4) with respect to the first adjustment plate (10) is ensured, and the adjustment screw (4) is prevented from rattling.
【００１２】可動枠(２)には、第２支持板(21)の両側
に、ビス孔(81)(81)が開設され、固定枠(１)にはビス孔
(81)(81)に対応して、ビス孔(81)(81)より大きい挿通孔
(82)(82)が開設されている。また、固定枠(１)正面には
４箇所のネジ孔(83)(83)(83)(83)が開設され、可動枠
(２)には該ネジ孔(83)(83)(83)(83)に対応して、遊嵌孔
(84)(84)(84)(84)が開設されている。The movable frame (2) has screw holes (81) and (81) on both sides of the second support plate (21), and the fixed frame (1) has screw holes.
(81) (81) Corresponding to the screw hole (81) (81)
(82) (82) has been established. In addition, four screw holes (83) (83) (83) (83) are opened in front of the fixed frame (1),
(2) has a loose fitting hole corresponding to the screw hole (83) (83) (83) (83).
(84) (84) (84) (84) have been established.
【００１３】図２は固定枠(１)と可動枠(２)が重ね合わ
さった状態を示す平面図であり、図３は同上の正面図で
ある。各ビス孔(81)には固定ビス(８)が挿通孔(82)を通
って螺合し、各ネジ孔(83)には液晶パネル(７)側から、
固定ビス(80)が遊嵌孔(84)を通って螺合する。当初各固
定ビス(８)(80)は軽く締結され、可動枠(２)が調整ビス
(４)により調整可能に設けられる。固定枠(１)の裏面と
可動枠(２)の表面とが接し、可動枠(２)は調整ビス(４)
の回転により、固定枠(１)に沿って摺動可能になる。第
１バネ掛け片(50)と第２バネ掛け片(52)との間には、引
張バネ(５)が掛けられ、該引張バネ(５)により可動枠
(２)は上方に付勢されている。該付勢力により、可動枠
(２)のガタ付きが防止されると共に、調整ビス(４)に適
度の回転負荷が与えられ、可動枠(２)を円滑に調整でき
る。FIG. 2 is a plan view showing a state where the fixed frame (1) and the movable frame (2) are overlaid, and FIG. 3 is a front view of the same. A fixing screw (8) is screwed into each screw hole (81) through the insertion hole (82), and each screw hole (83) is inserted from the liquid crystal panel (7) side.
The fixing screw (80) is screwed through the loose fitting hole (84). Initially, each fixed screw (8) (80) is lightly fastened, and the movable frame (2) is adjusted
It is provided to be adjustable by (4). The back surface of the fixed frame (1) and the front surface of the movable frame (2) are in contact with each other, and the movable frame (2) is
By the rotation of, it becomes possible to slide along the fixed frame (1). A tension spring (5) is hung between the first spring hook piece (50) and the second spring hook piece (52), and the movable frame is moved by the tension spring (5).
(2) is urged upward. By the biasing force, the movable frame
The play of (2) is prevented, and an appropriate rotational load is applied to the adjusting screw (4), so that the movable frame (2) can be adjusted smoothly.
【００１４】液晶パネル(７)が取り付けられた可動枠
(２)の調整方法は従来と同様である。即ち、可動枠(２)
を左右に調整するには、偏心シャフト(３)を回転させる
(図４参照)。該偏心シャフト(３)は調整孔(24)の左右縁
を押し、可動枠(２)を前記長孔(12)(12)に沿って左右に
移動させる。調整ビス(４)(４)は長孔(12)(12)内を左右
に移動する。可動枠(２)を固定枠(１)に対向する面内に
て回転させるには、何れか一方の調整ビス(４)を回転さ
せる(図５参照)。可動枠(２)は他方の調整ビス(４)を支
点に回転する。可動枠(２)を上下に調整するには、両方
の調整ビス(４)(４)を同じ回転角だけ回転させる。可動
枠(２)は調整ビス(４)(４)の回転角に応じた変位量だけ
上下に移動する。実際の調整は、図６に示す液晶プロジ
ェクタによる画像をスクリーン(73)に写し出し、該画像
を見ながら行なう。調整終了後は、固定ビス(８)(80)を
締め込み、可動枠(２)と固定枠(１)を固定する。A movable frame to which a liquid crystal panel (7) is attached
The adjustment method (2) is the same as the conventional one. That is, the movable frame (2)
Rotate the eccentric shaft (3) to adjust
(See FIG. 4). The eccentric shaft (3) pushes the left and right edges of the adjustment hole (24) to move the movable frame (2) to the left and right along the long holes (12) (12). The adjusting screws (4) and (4) move left and right in the slots (12) and (12). To rotate the movable frame (2) in the plane facing the fixed frame (1), one of the adjustment screws (4) is rotated (see FIG. 5). The movable frame (2) rotates around the other adjustment screw (4) as a fulcrum. To adjust the movable frame (2) up and down, both adjustment screws (4) and (4) are rotated by the same rotation angle. The movable frame (2) moves up and down by a displacement amount corresponding to the rotation angle of the adjusting screws (4) and (4). The actual adjustment is performed while projecting an image from the liquid crystal projector shown in FIG. 6 on a screen (73) and viewing the image. After the adjustment, the fixed screws (8) and (80) are tightened to fix the movable frame (2) and the fixed frame (1).
【００１５】可動枠(２)は調整ビス(４)から離間した位
置に設けられた引張バネ(５)により、付勢力を与えられ
ている。従来は前記のように、圧縮バネ(９)の一端が、
調整板(91)の裏面に接しているので、可動枠(２)を左右
方向に調整するときに、圧縮バネ(９)と調整板(91)が擦
れて、摺動負荷となり、調整がしずらい。しかし、本実
施例では、従来のように圧縮バネ(９)と調整板(91)が擦
れることはないので、調整の困難さを緩和できる。ま
た、調整ビス(４)(４)は可動枠(２)の両端部に取り付け
られており、両調整ビス(４)(４)間の間隔が長いので、
一方の調整ビス(４)を回転させたときに微調整が行ない
やすい。さらに、可動枠(２)と固定枠(１)は面が接して
いるので、可動枠(２)は固定枠(１)に接して、上下左右
方向及び回転方向に摺動し、前後方向に調整振れが生じ
ない。従って、調整が安定する。また、偏心シャフト
(３)は従来の調整機構に比して、光軸寄りに位置してい
るので、偏心シャフト(３)を回転させて可動枠(２)を摺
動させるときに、可動枠(２)の上下端部の摺動量にズレ
が生じることを防げる。即ち、偏心シャフト(３)が光軸
から遠く上側に離間していると、偏心シャフト(３)を回
転させても、可動枠(２)が下端部を中心に回転したよう
になり、可動枠(２)の上端部の摺動量と下端部の摺動量
との間に、ズレを生じることがある。然るに、本実施例
の内容では、かかる虞れはないのである。The movable frame (2) is biased by a tension spring (5) provided at a position separated from the adjusting screw (4). Conventionally, as described above, one end of the compression spring (9) is
Since it is in contact with the back surface of the adjusting plate (91), when adjusting the movable frame (2) in the left-right direction, the compression spring (9) and the adjusting plate (91) are rubbed, resulting in a sliding load. No. However, in the present embodiment, the compression spring (9) and the adjusting plate (91) do not rub as in the prior art, so that the difficulty of adjustment can be reduced. The adjusting screws (4) and (4) are attached to both ends of the movable frame (2), and the distance between the adjusting screws (4) and (4) is long.
When one of the adjustment screws (4) is rotated, fine adjustment is easily performed. Further, since the movable frame (2) and the fixed frame (1) are in contact with each other, the movable frame (2) is in contact with the fixed frame (1), slides in the vertical and horizontal directions and the rotating direction, and moves in the front-rear direction. No adjustment run-out occurs. Therefore, the adjustment is stabilized. Also, eccentric shaft
(3) is located closer to the optical axis than the conventional adjustment mechanism, so that when the eccentric shaft (3) is rotated to slide the movable frame (2), It is possible to prevent the displacement of the sliding amount of the upper and lower ends from occurring. That is, if the eccentric shaft (3) is far away from the optical axis and separated upward, even if the eccentric shaft (3) is rotated, the movable frame (2) will rotate around the lower end, and A deviation may occur between the sliding amount of the upper end and the sliding amount of the lower end in (2). However, in the contents of the present embodiment, there is no such fear.
【００１６】図６は、上記調整機構を液晶プロジェクタ
に応用した例を示す。装置本体(６)内には周知の如く、
光源(60)が設けられ、光源(60)からの光路上には、ダイ
クロイックミラー(61)(62)(63)(64)、全反射ミラー(65)
(66)、投射レンズ(72)が設けられている。光源(60)から
の光は、ダイクロイックミラー(61)で青色が反射され、
該青色光は全反射ミラー(65)で反射されて、液晶パネル
(71)を照射する。ダイクロイックミラー(61)を通過した
光は、ダイクロイックミラー(62)で緑色光が反射され、
該反射光は液晶パネル(70)を照射する。ダイクロイック
ミラー(62)を通過した赤色光は、全反射ミラー(66)で反
射される。青色光と緑色光はダイクロイックミラー(63)
で合成され、該合成光はダイクロイックミラー(64)で赤
色光と合わさる。ダイクロイックミラー(64)で合成され
た光は、投射レンズ(72)により照射され、スクリーン(7
3)に映し出される。FIG. 6 shows an example in which the adjustment mechanism is applied to a liquid crystal projector. As is well known in the device body (6),
A light source (60) is provided, and on the optical path from the light source (60), dichroic mirrors (61) (62) (63) (64), total reflection mirror (65)
(66), and a projection lens (72) are provided. Light from the light source (60) is reflected in blue by the dichroic mirror (61),
The blue light is reflected by the total reflection mirror (65), and the liquid crystal panel
Irradiate (71). The light that has passed through the dichroic mirror (61) is reflected by the dichroic mirror (62) in green light,
The reflected light illuminates the liquid crystal panel (70). The red light that has passed through the dichroic mirror (62) is reflected by the total reflection mirror (66). Blue light and green light are dichroic mirrors (63)
And the combined light is combined with the red light by the dichroic mirror (64). The light synthesized by the dichroic mirror (64) is irradiated by the projection lens (72) and
It is reflected in 3).
【００１７】ここで固定枠(１)と可動枠(２)は、図７に
拡大して示すように、調整ビス(４)(４)が上下に位置す
るように、装置本体(６)に取り付けられる。偏心シャフ
ト(３)を回転させることにより、可動枠(２)は上下に移
動し、調整ビス(４)(４)を回転させることにより、可動
枠(２)は装置本体(６)側面に直交する垂直面内を摺動す
る。第３調整板(14)の突起(15)(15)間に治具等を挿入す
れば、可動枠(２)の光軸に対する傾き角を変えることが
できる。Here, the fixed frame (1) and the movable frame (2) are mounted on the apparatus body (6) such that the adjusting screws (4) and (4) are positioned vertically as shown in an enlarged view in FIG. It is attached. By rotating the eccentric shaft (3), the movable frame (2) moves up and down. By rotating the adjustment screws (4) and (4), the movable frame (2) is perpendicular to the side of the apparatus body (6). To slide in a vertical plane. By inserting a jig or the like between the projections (15) and (15) of the third adjustment plate (14), the tilt angle of the movable frame (2) with respect to the optical axis can be changed.
【００１８】上記実施例の説明は、本発明を説明するた
めのものであって、特許請求の範囲に記載の発明を限定
し、或は範囲を減縮する様に解すべきではない。又、本
発明の各部構成は上記実施例に限らず、特許請求の範囲
に記載の技術的範囲内で種々の変形が可能であることは
勿論である。The description of the above embodiments is for the purpose of illustrating the present invention and should not be construed as limiting the invention described in the appended claims or reducing the scope thereof. Further, the configuration of each part of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made within the technical scope described in the claims.
【図１】固定枠、可動枠、液晶パネルの分解斜視図であ
る。FIG. 1 is an exploded perspective view of a fixed frame, a movable frame, and a liquid crystal panel.
【図２】固定枠と可動枠を組み合わせた状態の平面図で
ある。FIG. 2 is a plan view showing a state where a fixed frame and a movable frame are combined.
【図３】同上の正面図である。FIG. 3 is a front view of the same.
【図４】可動枠の左右方向の調整を示す図である。FIG. 4 is a diagram illustrating adjustment of a movable frame in a left-right direction.
【図５】同上の回転方向の調整を示す図である。FIG. 5 is a diagram showing adjustment of a rotation direction in the above.
【図６】液晶パネルが取り付けられた液晶プロジェクタ
を示す側面図である。FIG. 6 is a side view showing a liquid crystal projector to which a liquid crystal panel is attached.
【図７】図６のＡ部の拡大図である。FIG. 7 is an enlarged view of a portion A in FIG. 6;
【図８】従来の調整機構の平面図である。FIG. 8 is a plan view of a conventional adjustment mechanism.
【図９】同上の正面図である。FIG. 9 is a front view of the same.
(１) 固定枠 (２) 可動枠 (４) 調整ビス (５) 引張バネ (７) 液晶パネル (1) Fixed frame (2) Movable frame (4) Adjustment screw (5) Tension spring (7) LCD panel
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G02F 1/13 G02F 1/1333 G03B 21/00 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) G02F 1/13 G02F 1/1333 G03B 21/00
Claims (3)
と、該可動枠(２)を上下左右移動及び回転自在に支持す
る固定枠(１)を具え、可動枠(２)は両端部が、固定枠
(１)に回転自在に支持されている調整ビス(４)の先端部
に螺合して、固定枠(１)に対向する面内に於いて、調整
ビス(４)進行方向に調整可能に設けられた液晶パネルの
調整機構に於いて、調整ビス(４)には鍔(40)が設けられ、調整ビス(４)は該
鍔(40)と頭部とで固定枠(１)を挟持し、 可動枠(２)と固定枠(１)との間には、可動枠(２)を調整
ビス(４)進行方向に付勢する引張バネ(５)が、調整ビス
(４)から離間して設けられたことを特徴とする液晶パネ
ルの調整機構。1. A movable frame (2) for supporting a liquid crystal panel (7).
And a fixed frame (1) for supporting the movable frame (2) vertically and horizontally and rotatably. The movable frame (2) has fixed frames at both ends.
Screwed to the tip of the adjustment screw (4) rotatably supported by (1), the adjustment screw (4) can be adjusted in the advancing direction on the surface facing the fixed frame (1). In the provided liquid crystal panel adjusting mechanism, the adjusting screw (4) is provided with a flange (40), and the adjusting screw (4) is
The fixed frame (1) is sandwiched between the flange (40) and the head, and the movable frame (2) is attached between the movable frame (2) and the fixed frame (1) in the traveling direction of the adjusting screw (4). The tension spring (5) is
(4) An adjustment mechanism for a liquid crystal panel, provided apart from (4).
とが接している請求項１に記載の液晶パネルの調整機
構。2. The adjustment mechanism for a liquid crystal panel according to claim 1, wherein a rear surface of the fixed frame (1) is in contact with a front surface of the movable frame (2).
えた液晶プロジェクタに於いて、 液晶パネル(７)を支持する可動枠(２)と、該可動枠(２)
を上下左右移動及び回転自在に支持する固定枠(１)を具
え、可動枠(２)は、両端部が固定枠(１)に回転自在に支
持された調整ビス(４)の先端部に螺合して、固定枠(１)
に対向する面内に於いて、調整ビス(４)進行方向に調整
可能に設けられ、調整ビス(４)には鍔(40)が設けられ、調整ビス(４)は該
鍔(40)と頭部とで固定枠(１)を挟持し、 可動枠(２)と固定枠(１)との間には、可動枠(２)を調整
ビス(４)進行方向に付勢する引張バネ(５)が、調整ビス
(４)から離間して設けられたことを特徴とする液晶プロ
ジェクタ。3. A movable frame (2) for supporting a liquid crystal panel (7) in a liquid crystal projector having a plurality of liquid crystal panels corresponding to three primary colors, and the movable frame (2).
The movable frame (2) is provided with a fixed frame (1) rotatably supported by the fixed frame (1). Together, fixed frame (1)
The adjustment screw (4) is provided so as to be adjustable in the advancing direction in the surface facing the adjustment screw (4), the adjustment screw (4) is provided with a flange (40), and the adjustment screw (4) is
The fixed frame (1) is sandwiched between the flange (40) and the head, and the movable frame (2) is attached between the movable frame (2) and the fixed frame (1) in the traveling direction of the adjusting screw (4). The tension spring (5) is
(4) A liquid crystal projector provided at a distance from the liquid crystal projector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22132195A JP3197798B2 (en) | 1995-08-30 | 1995-08-30 | Liquid crystal panel adjustment mechanism and liquid crystal projector using the adjustment mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22132195A JP3197798B2 (en) | 1995-08-30 | 1995-08-30 | Liquid crystal panel adjustment mechanism and liquid crystal projector using the adjustment mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0961782A JPH0961782A (en) | 1997-03-07 |
| JP3197798B2 true JP3197798B2 (en) | 2001-08-13 |
Family
ID=16764977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22132195A Expired - Fee Related JP3197798B2 (en) | 1995-08-30 | 1995-08-30 | Liquid crystal panel adjustment mechanism and liquid crystal projector using the adjustment mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3197798B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1146077A (en) * | 1997-07-25 | 1999-02-16 | Sanyo Electric Co Ltd | Cabinet for liquid crystal projector |
| JP3603650B2 (en) | 1999-03-08 | 2004-12-22 | セイコーエプソン株式会社 | Adjustment mechanism and projection display device using the same |
| JP2002182213A (en) * | 2000-12-12 | 2002-06-26 | Sony Corp | Projection liquid crystal display and its adjustment method |
| JP5335393B2 (en) * | 2008-12-05 | 2013-11-06 | 三洋電機株式会社 | Projection display device |
-
1995
- 1995-08-30 JP JP22132195A patent/JP3197798B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0961782A (en) | 1997-03-07 |
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