JPH0351881A - Liquid crystal projector - Google Patents
Liquid crystal projectorInfo
- Publication number
- JPH0351881A JPH0351881A JP1187814A JP18781489A JPH0351881A JP H0351881 A JPH0351881 A JP H0351881A JP 1187814 A JP1187814 A JP 1187814A JP 18781489 A JP18781489 A JP 18781489A JP H0351881 A JPH0351881 A JP H0351881A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- light
- crystal display
- display panel
- adhered
- 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.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 65
- 239000011521 glass Substances 0.000 claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 4
- 230000002194 synthesizing effect Effects 0.000 claims 2
- 239000000758 substrate Substances 0.000 abstract description 11
- 239000013464 silicone adhesive Substances 0.000 abstract description 9
- 230000005855 radiation Effects 0.000 abstract description 6
- 230000000630 rising effect Effects 0.000 abstract 2
- 230000017525 heat dissipation Effects 0.000 description 12
- 125000006850 spacer group Chemical group 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Projection Apparatus (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
Description
【発明の詳細な説明】
(イ)産業上の利用分野
本発明は液晶表示パネルを用いた液晶プロジェクタに関
する。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a liquid crystal projector using a liquid crystal display panel.
(ロ)従米の技術
従来、液晶表示パネルを用いた液晶プロジェクタとして
は特開昭61−150487号公報のものがある。(b) Prior Art Conventionally, a liquid crystal projector using a liquid crystal display panel is disclosed in Japanese Patent Laid-Open No. 150487/1987.
上述の液晶プロジェクタの構戊を第7図に示す。同図に
おいて、(1)は投射用光源、(2)(3)は夫々、青
色光のみ及び赤色光のみを反射する第1、第2ダイクロ
イックミラー、(6 )(7 )(s )(9)は第1
〜第4反射ミラー、(10)(1 1 )(12)は
夫々、青色、緑色及び赤色用のアクティブマトリックス
型の液晶表示パネルを含むIIll−第3液晶ユニット
、(13〉は投写レンズ、(14)は外装ケース、(1
5)はスクリーンであり、光源(1)からの光は第1ダ
イクロイックミラー(2)及び第2グイクロイックミラ
−(3)で分光され、それぞれ第l、′@2反射ミラー
(6 )(8 )で反射され、第1〜13液晶ユニツ}
(10)(11)(12)で夫々、画像情報によリ変
調された後、第3、第4反射ミラー(7 )(9 )及
び第3、第4ダイクロイックミラー(4)(5)により
再度合威され、投写レンズ(13)を介してスクリーン
(l5)に画像が映出される。ここで、上述の液晶プロ
ジェクタにおける液晶表示パネルは50℃以下で動作さ
せることが好ましい。The structure of the above-mentioned liquid crystal projector is shown in FIG. In the figure, (1) is a projection light source, (2) and (3) are first and second dichroic mirrors that reflect only blue light and only red light, respectively, (6), (7), (s), and (9). ) is the first
~4th reflection mirror, (10) (1 1 ) (12) are IIll-third liquid crystal unit including active matrix liquid crystal display panels for blue, green, and red, respectively; (13> is a projection lens; 14) is the outer case, (1
5) is a screen, and the light from the light source (1) is separated by the first dichroic mirror (2) and the second dichroic mirror (3), and is separated by the l-th and '@2 reflecting mirrors (6) ( 8) reflected by the 1st to 13th liquid crystal units}
After being remodulated by the image information in (10), (11), and (12), the third and fourth reflecting mirrors (7), (9) and the third and fourth dichroic mirrors (4) and (5) The image is projected again onto the screen (15) via the projection lens (13). Here, the liquid crystal display panel in the above-mentioned liquid crystal projector is preferably operated at 50° C. or lower.
しかしながら、前記液晶表示パネルはコンデンサレンズ
(図示省略)で集光された強い光が照射されるためかな
り発熱する。However, the liquid crystal display panel generates a considerable amount of heat because it is irradiated with strong light focused by a condenser lens (not shown).
更に、前記液晶パネルの前後には偏光板(図示省略)が
近接して配されており、この偏光板は例えば、40%の
偏光率で外温より+30℃上昇するため、この熱が液晶
表示パネルに伝導され、該パネルが50℃以上となって
しまう場合がある。Furthermore, polarizing plates (not shown) are arranged close to each other in front and behind the liquid crystal panel, and when the polarization rate of this polarizing plate is 40%, the temperature rises by +30°C from the outside temperature, so this heat is transferred to the liquid crystal display. This may be conducted to the panel and the temperature of the panel may reach 50°C or higher.
(ハ)発明が解決しようとする課題
本発明は上述の点に鑑み為されたものであり、液晶パネ
ルの温度上昇を防止した液晶プロジェクタを提供するも
のである。(c) Problems to be Solved by the Invention The present invention has been made in view of the above-mentioned points, and provides a liquid crystal projector that prevents the temperature rise of the liquid crystal panel.
(二)課題を解決するための手段
本発明は、少なくとも赤、緑、青の3成分の光を発する
光源と、該光源からの光を赤、緑、青の3成分に分離す
る光分離手段と、該光分離手段により分離された赤、緑
、青の3威分の光の各光路中に挿入され、画像情報に応
じて前記3威分の光を変調する液晶表示手段と、該液晶
表示手段を透過した前記3FR分の光を光学的に合處す
る光合戊手段とを備える液晶プロジェクタにおいて、前
記液晶表示手段を、液晶表示パネルと、液晶表示パネル
の両面に夫々接着される一対の放熱用のガラス板と、こ
のガラス板に対して離間して対向配置される一対の偏光
板と、この一対の偏光板のうちの一方に接着されるコン
デンサレンズとで11處してなる。(2) Means for Solving the Problems The present invention provides a light source that emits light of at least three components of red, green, and blue, and a light separation means that separates the light from the light source into three components of red, green, and blue. a liquid crystal display means that is inserted into each optical path of the three-power light of red, green, and blue separated by the light separation means and modulates the three-power light according to image information; In the liquid crystal projector, the liquid crystal projector includes a light combining means for optically combining the 3FR of light transmitted through the display means. It consists of 11 glass plates for heat dissipation, a pair of polarizing plates that are spaced apart from and facing the glass plate, and a condenser lens that is bonded to one of the pair of polarizing plates.
(へ)実施例 以下、図面に従い本発明の一実施例を説明する。(f) Example An embodiment of the present invention will be described below with reference to the drawings.
第1図(イ)(ロ)(ハ)は本実施例装置の正面図、平
面図及び側面図であり、第7図と同一部分には同一符号
を付し説明を省略する。1(a), 1(b), and 1(c) are a front view, a plan view, and a side view of the apparatus of this embodiment, and the same parts as in FIG. 7 are designated by the same reference numerals and the explanation thereof will be omitted.
同図において、光源(l゛)はメタルハライドランプよ
りなり、下方へ向って配置されている。光源(1゛)よ
り出た光は紫外線カットフィルタ(18)を通過し、第
5反射ミラー(19)で反射された後、第lダイクロイ
ックミラー(2)で青色光のみ反射され、他は通過され
る。そして、前記青色光は第6反射ミラー(20)で反
射され青色用の第1液晶表示パネル(10)を照射する
。In the figure, the light source (l') is made of a metal halide lamp and is arranged facing downward. The light emitted from the light source (1) passes through the ultraviolet cut filter (18), is reflected by the fifth reflecting mirror (19), and then only the blue light is reflected by the first dichroic mirror (2), while the others are passed through. be done. The blue light is reflected by a sixth reflecting mirror (20) and illuminates the first blue liquid crystal display panel (10).
一方、第1前記ダイクロイックミラ−(2)で透過され
た赤色光及び緑色光は第2ダイクロイックミラー(3)
で赤色光が反射され、緑色光は透過されることによって
分離され、夫々、赤色用の第3液晶ユニツ} (12)
及び緑色用の第2液晶ユニット(11)を照射する。On the other hand, the red light and green light transmitted by the first dichroic mirror (2) are transmitted to the second dichroic mirror (3).
The red light is reflected and the green light is transmitted and separated, and the third liquid crystal unit for red color respectively} (12)
and the second liquid crystal unit (11) for green color.
前記第1〜第3液晶ユニット(10)(11)(12)
はR.G,Bの各映像信号により駆動されているため、
各パネルの透過光は夫々、前記各映像信号で輝度変調さ
れたものとなる。そして、輝度変調された青色光及び赤
色光は第2ダイクロイックミラ−(3)で合或される。Said first to third liquid crystal units (10) (11) (12)
is R. Since it is driven by G and B video signals,
The transmitted light of each panel is luminance-modulated by each of the video signals. The brightness-modulated blue light and red light are then combined by a second dichroic mirror (3).
また、輝度変調された緑色光は第7反射ミラー(21)
で反射され、緑色先のみ反射させる第3ダイクロインク
ミラー(22)で前記青色光及び赤色光と今威された後
,投写レンズ(13)で拡大される。In addition, the brightness-modulated green light is transmitted to the seventh reflection mirror (21).
After being reflected by the third dichroic ink mirror (22), which reflects only the green light, into the blue light and red light, it is magnified by the projection lens (13).
上述の光学経路、即ち、光源(1゛)から投写レンズ(
13)までの経路は垂直面に平行であるが、投写レンズ
(13)を出た光は可動ミラー(23)で水平方向に反
射され略90゜その経路が変更される。The optical path mentioned above, i.e. from the light source (1゛) to the projection lens (
13) is parallel to the vertical plane, but the light exiting the projection lens (13) is reflected in the horizontal direction by the movable mirror (23) and its path is changed by about 90 degrees.
そして、可動ミラー(23)の反射光は外装ケース(2
4〉に形戒された窓部(24a)より外部へ出る。The reflected light from the movable mirror (23) is reflected by the exterior case (23).
Exit outside through the window (24a) shaped like 4>.
以上が光学経路であるが、本実施例の液晶プロジェクタ
は壁掛け型となっており、外装ケース(24)の背面に
取付部(24b)が形戊されており、第2図に示す如く
、スクリーン(15)に対向する壁面に前記取付部(2
4b)を介して取付けることができる。The above is the optical path, but the liquid crystal projector of this embodiment is a wall-mounted type, and a mounting part (24b) is formed on the back of the outer case (24), so that the screen can be attached to the screen as shown in FIG. The mounting portion (2) is attached to the wall opposite to (15).
4b).
尚、図中、(25)は光源(1゛)を冷却するためのフ
ァン、(26)は液晶駆動回路及び電源回路用基板、(
27)は光源駆動回路用基板である。In the figure, (25) is a fan for cooling the light source (1゛), (26) is a board for the liquid crystal drive circuit and power supply circuit, (
27) is a light source driving circuit board.
次に第3図に従い可動ミラー(23)の可動構造につい
て説明する。外装ケース(26)の背面の内面にはL字
状の基台(28)が固定されている。Next, the movable structure of the movable mirror (23) will be explained with reference to FIG. An L-shaped base (28) is fixed to the inner surface of the back surface of the exterior case (26).
この基台(28)には支持部材(29)が支軸(3o〉
により垂直方向に回動自在に軸支されている。この支持
部材(29)はL字状の基部( 29a )及びこの基
部より突出する一対のアーム(29b)(29c)より
なる。前記基部(29a)には支軸(30)を中心とす
る円弧状のスリット(29d)が形或されると共に、こ
のスリッ} (29d)には前記基台(29a)に螺合
するビス(31)が遊嵌している。A support member (29) is attached to the support shaft (3o) on this base (28).
It is rotatably supported in the vertical direction. This support member (29) consists of an L-shaped base (29a) and a pair of arms (29b) (29c) projecting from this base. The base (29a) has an arc-shaped slit (29d) centered around the support shaft (30), and this slit (29d) has a screw (29d) that is screwed into the base (29a). 31) is loosely fitted.
従って、前記支持部材(29)は基台(28)に対して
垂直方向に回動可能で且つビス(31)を締付けること
により任意の角度に固定町能である。Therefore, the support member (29) is rotatable in the vertical direction with respect to the base (28) and can be fixed at any angle by tightening the screw (31).
また、前記アーム(29b)(29c)には可動ミラー
(23)の裏面に形戊された一対の突片(23a)(2
3b)が支軸(32)(33)により夫々、水平方向に
回動可能に軸支されている。そして、一方の突片(23
a)には前記スリット(29d)と同様のスリット(2
3c)が形或され、一方の前記アーム(29b)に螺合
するビス(34)が遊嵌している。従って、前述と同様
に突片(23a)(23b)は支持部材(29)に対し
て水平方向に回動可能で且つビス(34)を締め付ける
ことにより任意の角度に固定可能である。Furthermore, the arms (29b) and (29c) are provided with a pair of protrusions (23a) and (2) formed on the back surface of the movable mirror (23).
3b) are rotatably supported in the horizontal direction by support shafts (32) and (33), respectively. Then, one protrusion (23
In a), there is a slit (2) similar to the slit (29d).
3c), and a screw (34) screwed into one of the arms (29b) is loosely fitted. Therefore, similarly to the above, the projecting pieces (23a) and (23b) can be rotated in the horizontal direction with respect to the support member (29), and can be fixed at any angle by tightening the screw (34).
上述の如く、本実施例の液晶プロジェクタは可動ミラー
(23〉の水平及び垂直方向の角度を任意に可変できる
ので第2図の如く壁掛け配置とした場合、投写角度を任
意に設定できるので、スクリーン(15)の位置を若干
移動させても液晶プロジエクな自身は動かす必要がない
。As mentioned above, the liquid crystal projector of this embodiment can arbitrarily change the horizontal and vertical angles of the movable mirror (23), so when it is mounted on a wall as shown in Figure 2, the projection angle can be set arbitrarily, so that the screen Even if the position of (15) is moved slightly, there is no need to move the LCD projector itself.
次に、液晶ユニツ} (10)の具体的構戊について第
4図、第5図及び第6図に従い説明する。同図において
、(100)はコンデンサレンズ、(101)はこのコ
ンデンサレンズ(100)の裏面に透明シリコン接着剤
により接着される入射側偏光板、(1/)2)は前記コ
ンデンサレンズを放熱する放熱枠、(103) は液
晶プロジェクタ本体に取付けられる取付片(104)
、垂直コンバーゼンス調整手段(105)及び水平コン
バーゼンス調整手段(106)を備える液晶ユニット基
板、(107)は・1本の支柱(107a)(107a
)・・・を備える固定枠であり、この支柱には前記液晶
ユニット基板(103)の4隅に形戊された径大の各透
孔(103a)(103a)・・・及び放熱枠(102
)の径小の各透孔(102a)(102a)を貫通して
ナット(108)(108)・・・が螺合する。また、
(to9)(109)・・・は前記固定枠(107)と
放熱枠(102)との間に配され、前記液晶ユニット基
板より厚みのあるスベーサである。Next, the specific structure of the liquid crystal unit (10) will be explained with reference to FIGS. 4, 5, and 6. In the figure, (100) is a condenser lens, (101) is an incident-side polarizing plate bonded to the back surface of this condenser lens (100) with transparent silicone adhesive, and (1/)2) is a heat dissipator for the condenser lens. The heat dissipation frame (103) is a mounting piece (104) that is attached to the LCD projector body.
, a liquid crystal unit substrate including a vertical convergence adjustment means (105) and a horizontal convergence adjustment means (106), (107) is one pillar (107a) (107a
)..., and this support has large-diameter through holes (103a) (103a) formed at the four corners of the liquid crystal unit substrate (103), and a heat dissipation frame (102).
) are screwed together through the small diameter through holes (102a) (102a). Also,
(to9) (109) . . . are spacers arranged between the fixed frame (107) and the heat radiation frame (102), and are thicker than the liquid crystal unit substrate.
更に、(110)は液晶表示パネルであり、周辺に駆動
回路基板を一体に備えている。(111)(112)は
この液晶パネルの両面に夫々、透明シリコン接着剤によ
り接着される放熱用ガラス板, (113)は基板ガラ
ス(114)に透明シリコン接着剤により接着される出
射側偏光板、(115)はこの基板ガラス(114)が
伝熱性シリコン接着剤により接着される放熱枠であり、
この放熱枠はビス(116)(116)・・・により前
記液晶表示パネル(110)と共に前記固定枠(107
)に固定される。尚、(1170117)・・・は前記
ビスが挿入されると共に前記液晶表示パネル(110)
の4隅の透孔(110a)(110a)・・・に貫通し
て前記パネルを保護するスベーサである。Further, (110) is a liquid crystal display panel, which is integrally equipped with a driving circuit board around the periphery. (111) and (112) are glass plates for heat dissipation that are bonded to both sides of this liquid crystal panel with transparent silicone adhesive, respectively. (113) is a polarizing plate on the output side that is bonded to the substrate glass (114) with transparent silicone adhesive. , (115) is a heat dissipation frame to which this substrate glass (114) is bonded with a heat conductive silicone adhesive,
This heat dissipation frame is connected to the fixed frame (107) together with the liquid crystal display panel (110) by screws (116) (116)...
) is fixed. (1170117)... indicates that the screws are inserted and the liquid crystal display panel (110)
This is a spacer that penetrates through holes (110a) (110a) at the four corners of the panel to protect the panel.
次に上述の液晶ユニット(10)の組立て及びコンバー
ゼンス調整について説明するウ
まず、入射側偏光板(101)を貼着したコンデンサレ
ンズ(100)を放熱枠(102)に嵌合すると共に伝
熱性撞着剤により接着する。Next, we will explain the assembly and convergence adjustment of the above-mentioned liquid crystal unit (10).U First, the condenser lens (100) to which the incident side polarizing plate (101) is attached is fitted into the heat dissipation frame (102) and the heat conductive fitting is attached. Adhere with adhesive.
次に固定枠(107)の支柱( 107a ) ( 1
07a )−・に液晶ユニット基板(103)スペーサ
(109)(109)・り及び前記放熱枠(102)を
挿入し、ナット(10B)(108)・・・を螺合せし
め締付する。この状態で固定枠(107)に対して放熱
枠(102)は固定されるが、液晶ユニット基板(10
3)はスヘーサ(109)(109)・・・により若干
の移動可能に保持されている。Next, the pillars (107a) (1) of the fixed frame (107)
07a) Insert the liquid crystal unit board (103), spacers (109), (109), and the heat radiation frame (102), and screw and tighten the nuts (10B) (108). In this state, the heat radiation frame (102) is fixed to the fixed frame (107), but the liquid crystal unit board (10
3) is held slightly movably by spacers (109) (109)...
次に、出射側偏光板(113)を貼着した基板ガラス(
114)を放熱枠(115)に伝熱性シリコン接着剤に
より接着し、この放熱枠を予め両面に放熱用ガラス板(
111)(112)を貼着した液晶表示パネル(110
)及びスベーサ(117)(117)・・・を挟んで固
定枠(107)にビス(116)(116)・・・でネ
ジ止めする。Next, the substrate glass (
114) is adhered to the heat dissipation frame (115) using a heat conductive silicone adhesive, and this heat dissipation frame is attached with heat dissipation glass plates (115) on both sides in advance.
Liquid crystal display panel (110) with 111) (112) attached
) and smoothers (117) (117), etc., and screw them to the fixed frame (107) with screws (116), (116), etc.
次に液晶ユニット基板(103)に垂直及び水平コンバ
ーゼンス調整手段(105)(106)をネジ止めする
。このとき、前記垂直コンバーゼンス手段(105)は
固定枠(107)を挟み込む様に取付けられる。Next, the vertical and horizontal convergence adjustment means (105) (106) are screwed to the liquid crystal unit substrate (103). At this time, the vertical convergence means (105) is attached to sandwich the fixed frame (107).
この状態で液晶ユニット(10)は第5図に示す如く一
体化され、取付片(104)を介して装置の所定の光学
経路内に取付けられる。尚、他の液晶ユニット(11)
(12)も同−11tcであり、同様にして所定の光学
経路内に取付けられる。In this state, the liquid crystal unit (10) is integrated as shown in FIG. 5, and is mounted within a predetermined optical path of the device via the mounting piece (104). In addition, other liquid crystal units (11)
(12) is also -11tc and is similarly installed within a predetermined optical path.
そして、この状態で各コンバーゼンス調整手段(105
)(106)の調整ビス(105a)(106a)を利
整することにより,液晶ユニット基板(103)に対す
る固定枠(107)の相対的な位置が変化し、R,G.
B光合戊した際のコンバーゼンス調整が実現できる。In this state, each convergence adjustment means (105
) (106), the relative position of the fixed frame (107) with respect to the liquid crystal unit substrate (103) changes, and the R, G.
Convergence adjustment can be achieved when B light is combined.
そして、コンバーゼンス調整が終了したら前記垂直コン
バーゼンス調整手段の締付ビス(IQ5b)を締付ける
ことにより前記固定枠を固定する。When the convergence adjustment is completed, the fixing frame is fixed by tightening the tightening screw (IQ5b) of the vertical convergence adjustment means.
(ト〉 発明の効果
上述の如く本発明に依れば、液晶表示パネルの温度上昇
を効率良く防止できるため安定した動作を行なうことが
できる。(G) Effects of the Invention As described above, according to the present invention, it is possible to efficiently prevent the temperature rise of the liquid crystal display panel, so that stable operation can be performed.
第1図(イ)(ロ)(ハ)は夫々、本発明の一実施例に
おける液晶プロジェクタの正面図、上面図及び側面図、
第2図は液晶プロジェクタの配置図、第3図は可動ミラ
ーの可動構造を示す斜視図、第4図は液晶ユニットの分
解斜視図、第5図は同組立斜視図、第6図は同側断面図
である。
第7図は従来の液晶プロジェクタの側面図である。
(1 01 ’)・・・光源、( 2 )(3 )(2
2)・・・第1、第2、第3ダイクロイックミラー、(
10)(11)(12)・・・液晶ユニット、(lOO
)・・・コンデンサレンズ、(1020115)・・・
放熱枠、(103)・・・液晶ユニット基板、(107
)・・・固定枠、(11(1)・・・液晶表示パネル、
(111)(112)・・・放熱用ガラス板、(13)
・・・投写レンズ、(15〉・・・スクリーン、(l8
)・・・紫外線カットフィルタ、(19)(20)(2
1)・・・第5、第6、第7反射ミラー (23)=・
’可動ミラー、(24a>−窓部、(24b)(24b
)・・・取付部。Figures 1 (a), (b), and (c) are a front view, a top view, and a side view of a liquid crystal projector according to an embodiment of the present invention, respectively;
Figure 2 is a layout diagram of the liquid crystal projector, Figure 3 is a perspective view showing the movable structure of the movable mirror, Figure 4 is an exploded perspective view of the liquid crystal unit, Figure 5 is an assembled perspective view, and Figure 6 is the same side. FIG. FIG. 7 is a side view of a conventional liquid crystal projector. (1 01')...Light source, (2)(3)(2
2)...first, second, and third dichroic mirrors, (
10)(11)(12)...Liquid crystal unit, (lOO
)... Condenser lens, (1020115)...
Heat dissipation frame, (103)...Liquid crystal unit board, (107
)...Fixed frame, (11(1)...Liquid crystal display panel,
(111) (112)...Glass plate for heat dissipation, (13)
...Projection lens, (15>...Screen, (l8
)...UV cut filter, (19) (20) (2
1)...5th, 6th, 7th reflecting mirror (23) =...
'Movable mirror, (24a>-window, (24b) (24b
)...Mounting part.
Claims (1)
と、該光源からの光を赤、緑、青の3成分に分離する光
分離手段と、該光分離手段により分離された赤、緑、青
の3成分の光の各光路中に挿入され、画像情報に応じて
前記3成分の光を変調する液晶表示手段と、該液晶表示
手段を透過した3成分の光を光学的に合成する光合成手
段とを備える液晶プロジェクタにおいて、 前記液晶表示手段を、液晶表示パネルと、この液晶表示
パネルの両面に夫々接着される一対の放熱用のガラス板
と、このガラス板に対して離間して対向配置される一対
の偏光板と、この一対の偏光板のうちの一方に接着され
るコンデンサレンズとで構成してなることを特徴とする
液晶プロジェクタ。(1) A light source that emits light of at least three components of red, green, and blue, a light separation means that separates the light from the light source into three components of red, green, and blue, and a red light separated by the light separation means. , a liquid crystal display means that is inserted into each optical path of the three component lights of green and blue, and modulates the three components of light according to image information; A liquid crystal projector comprising a light synthesizing means for synthesizing light, wherein the liquid crystal display means is spaced apart from a liquid crystal display panel, a pair of heat dissipating glass plates bonded to both surfaces of the liquid crystal display panel, and the glass plates. A liquid crystal projector comprising: a pair of polarizing plates facing each other; and a condenser lens bonded to one of the pair of polarizing plates.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1187814A JPH0614255B2 (en) | 1989-07-20 | 1989-07-20 | LCD projector |
EP90113877A EP0409246B1 (en) | 1989-07-20 | 1990-07-19 | Liquid crystal projector |
DE69030537T DE69030537T2 (en) | 1989-07-20 | 1990-07-19 | Liquid crystal projector |
KR1019900011059A KR0138759B1 (en) | 1989-07-20 | 1990-07-20 | Liquid crystal projector |
US07/885,693 US5473339A (en) | 1989-07-20 | 1992-05-19 | Liquid crystal projector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1187814A JPH0614255B2 (en) | 1989-07-20 | 1989-07-20 | LCD projector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0351881A true JPH0351881A (en) | 1991-03-06 |
JPH0614255B2 JPH0614255B2 (en) | 1994-02-23 |
Family
ID=16212708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1187814A Expired - Fee Related JPH0614255B2 (en) | 1989-07-20 | 1989-07-20 | LCD projector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0614255B2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0579518U (en) * | 1992-03-30 | 1993-10-29 | 株式会社ケンウッド | Holding mechanism for condenser lens for LCD projector |
WO1995009378A1 (en) * | 1993-09-30 | 1995-04-06 | Citizen Watch Co., Ltd. | Liquid crystal projector |
US5564819A (en) * | 1994-04-04 | 1996-10-15 | Rohm Co., Ltd. | LED lamp and arrangement for mounting LED lamps on a substrate |
WO1998027453A1 (en) * | 1996-12-18 | 1998-06-25 | Seiko Epson Corporation | Projection display |
US6231191B1 (en) | 1997-10-20 | 2001-05-15 | Hitachi, Ltd. | Image display mechanism and image display device |
EP1066547A4 (en) * | 1998-03-24 | 2004-05-06 | Aurora Sys Inc | Mechanical convergence fixture apparatus and method |
JP2005031271A (en) * | 2003-07-10 | 2005-02-03 | Sanyo Electric Co Ltd | Support structure for liquid crystal projector |
JP2006178468A (en) * | 2004-12-21 | 2006-07-06 | Lg Electronics Inc | Projection lens unit and thin type projector using the same |
JP2010240012A (en) * | 2009-04-01 | 2010-10-28 | Good Staff:Kk | Mirror device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6935753B2 (en) | 2001-01-15 | 2005-08-30 | Seiko Epson Corporation | Projector |
-
1989
- 1989-07-20 JP JP1187814A patent/JPH0614255B2/en not_active Expired - Fee Related
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0579518U (en) * | 1992-03-30 | 1993-10-29 | 株式会社ケンウッド | Holding mechanism for condenser lens for LCD projector |
WO1995009378A1 (en) * | 1993-09-30 | 1995-04-06 | Citizen Watch Co., Ltd. | Liquid crystal projector |
US5564819A (en) * | 1994-04-04 | 1996-10-15 | Rohm Co., Ltd. | LED lamp and arrangement for mounting LED lamps on a substrate |
USRE38194E1 (en) * | 1996-12-18 | 2003-07-22 | Seiko Epson Corporation | Projection display device |
WO1998027453A1 (en) * | 1996-12-18 | 1998-06-25 | Seiko Epson Corporation | Projection display |
US6056407A (en) * | 1996-12-18 | 2000-05-02 | Seiko Epson Corporation | Projection display device |
US6682197B2 (en) | 1997-10-20 | 2004-01-27 | Hitachi, Ltd. | Image display mechanism and image display device |
US6588910B2 (en) | 1997-10-20 | 2003-07-08 | Hitachi, Ltd. | Image display mechanism and image display device |
US6231191B1 (en) | 1997-10-20 | 2001-05-15 | Hitachi, Ltd. | Image display mechanism and image display device |
US6817720B2 (en) | 1997-10-20 | 2004-11-16 | Hitachi, Ltd. | Image display mechanism and image display device |
US6908198B2 (en) | 1997-10-20 | 2005-06-21 | Hitachi, Ltd. | Image display mechanism and image display device |
EP1066547A4 (en) * | 1998-03-24 | 2004-05-06 | Aurora Sys Inc | Mechanical convergence fixture apparatus and method |
JP2005031271A (en) * | 2003-07-10 | 2005-02-03 | Sanyo Electric Co Ltd | Support structure for liquid crystal projector |
JP4511134B2 (en) * | 2003-07-10 | 2010-07-28 | 三洋電機株式会社 | Projector support structure |
JP2006178468A (en) * | 2004-12-21 | 2006-07-06 | Lg Electronics Inc | Projection lens unit and thin type projector using the same |
JP2010240012A (en) * | 2009-04-01 | 2010-10-28 | Good Staff:Kk | Mirror device |
Also Published As
Publication number | Publication date |
---|---|
JPH0614255B2 (en) | 1994-02-23 |
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