JPH01189685A - Liquid crystal light valve and video projector with liquid crystal light valve - Google Patents
Liquid crystal light valve and video projector with liquid crystal light valveInfo
- Publication number
- JPH01189685A JPH01189685A JP63014830A JP1483088A JPH01189685A JP H01189685 A JPH01189685 A JP H01189685A JP 63014830 A JP63014830 A JP 63014830A JP 1483088 A JP1483088 A JP 1483088A JP H01189685 A JPH01189685 A JP H01189685A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- light valve
- crystal light
- lens
- item
- 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.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 120
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 230000003287 optical effect Effects 0.000 claims abstract description 7
- 239000011521 glass Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 11
- 238000000465 moulding Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 5
- 239000011347 resin Substances 0.000 abstract description 5
- 229920005989 resin Polymers 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract 2
- 238000002834 transmittance Methods 0.000 description 20
- 230000000694 effects Effects 0.000 description 6
- 238000005342 ion exchange Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、液晶デイスプレィ、プロジェクタ、コピア及
び光プリンタなどの光学機器に使用される液晶ライトバ
ルブ及びそれを備えたビデオプロジェクタに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid crystal light valve used in optical equipment such as a liquid crystal display, a projector, a copier, and an optical printer, and a video projector equipped with the same.
［従来の技術］
従来の液晶ライトバルブは、第３図に示すように、液晶
ライトバルブの前にレンズアレイは無かった。又そうい
う液晶ライトバルブを備えたビデオプロジェクタ−も無
かった。（ＳＩＤ ８７ＤＩＧＥＳＴ・７５ｐ１画像
電子学会予稿８７−０１−０３ １３ｐ）
［発明が解決しようとする課題］
しかし、前述の従来技術では、液晶ライトバルブの各液
晶の開口部周辺の光は、配線部材や遮光体等により吸収
され、有効化使用されないので、みかけの透過率が小さ
いという課題を有していた。[Prior Art] As shown in FIG. 3, a conventional liquid crystal light valve does not have a lens array in front of the liquid crystal light valve. There were also no video projectors equipped with such liquid crystal light bulbs. (SID 87DIGEST・75p1 IEICE Proceedings 87-01-03 13p) [Problems to be Solved by the Invention] However, in the above-mentioned conventional technology, the light around the opening of each liquid crystal of the liquid crystal light valve is transmitted through wiring members and Since the light is absorbed by a light shielding member and the like and is not used effectively, the problem is that the apparent transmittance is low.
また上記熱吸収により液晶付近の温度」−昇が生じ、入
射光量を増やすとライトバルブが正常に動作しなくなる
という課題を有していた。またそのような液晶ライトバ
ルブを備えたビデオプし１ジエクターでは上記理由によ
りもともと液晶ライトバルブ部分の透過率が低いうえに
、明るい光源を使えず、そのため画面が暗いという課題
を有していた。Furthermore, the temperature near the liquid crystal increases due to the heat absorption, and when the amount of incident light is increased, the light valve does not operate properly. In addition, video projectors equipped with such liquid crystal light valves had the problem that, for the reasons mentioned above, the transmittance of the liquid crystal light valve was originally low, and a bright light source could not be used, resulting in a dark screen.
そこで本発明はこのような課題を解決するため液晶ライ
トバルブの各液晶開口部周辺の光を各液晶開口部に導き
、有効に利用することで、みかけの透過率が大きく、入
射光量を増やしても正常に動作する液晶ライトバルブを
提供することにある。Therefore, in order to solve this problem, the present invention guides the light around each liquid crystal opening of the liquid crystal light valve to each liquid crystal opening and uses it effectively, thereby increasing the apparent transmittance and increasing the amount of incident light. We also aim to provide a properly working LCD light valve.
また本発明の他の目的は、そのような液晶ライトバルブ
を使うことにより、液晶ライトバルブ部分の透過率が大
きく、しかもより明るい光源を使えるため、明るい画面
をもったビデオプロジェクタ−を提供する点にある。Another object of the present invention is to provide a video projector with a bright screen because the transmittance of the liquid crystal light valve is high and a brighter light source can be used by using such a liquid crystal light valve. It is in.
［課題を解決するための手段］
本発明の液晶ライトバルブは、各液晶開口部に略光軸が
合わされた複数のレンズを該液晶開口部の前に設置した
ことを特徴とする。また、かかる液晶ライトバルブを光
源で照らし、その像をレンズ系で投映できるようにする
と、ビデオプロジェクタ−が構成される。（第９図）
［作用］
上記のように構成された液晶ライトバルブでは、各液晶
開口部周辺の光も個々のマイクロレンズによって各液晶
開口部に導かれ、有効に利用できる。[Means for Solving the Problems] The liquid crystal light valve of the present invention is characterized in that a plurality of lenses whose optical axes are substantially aligned with each liquid crystal opening are installed in front of the liquid crystal opening. Furthermore, a video projector is constructed by illuminating such a liquid crystal light valve with a light source and projecting the image using a lens system. (FIG. 9) [Function] In the liquid crystal light valve configured as described above, light around each liquid crystal opening is also guided to each liquid crystal opening by individual microlenses and can be used effectively.
従ってみかけの透過率が増加するとともに、各液晶開口
部周辺での熱吸収も少ないため液晶付近の温度上昇も小
さく、入射光量を増やしても正常に動作する。Therefore, the apparent transmittance increases, and since there is little heat absorption around each liquid crystal opening, the temperature rise near the liquid crystal is also small, and normal operation is possible even when the amount of incident light is increased.
また、そのような液晶ライトバルブを使うことにより、
液晶ライトバルブ部分の透過率が大きく、しかもより明
るい光源を使えるため、明るい画面をもったビデオプロ
ジェクタ−が実現できる。Also, by using such a liquid crystal light valve,
The transmittance of the liquid crystal light valve is high, and a brighter light source can be used, making it possible to create a video projector with a bright screen.
「実施例］
以下、実施例にもとすき本発明の詳細な説明する。ただ
し本発明は以下の実施例に限定されるものではない。[Examples] The present invention will be described in detail below using Examples. However, the present invention is not limited to the following Examples.
［実施例１］
表面を光学研磨したガラス基板（４０ｍｍＸ３ＱｍｍＸ
１ｍｍ）の表面に熱変形樹脂を材料として、圧着押圧成
型法を用いて直径６５μｍの凹凸状のマイクロレンズを
格子状に形成した。（特開昭６０−６０７５６号）格子
のピッチはたてよこおのおの、６５μｍ、８０μｍであ
る。（第５図）このマイクロレンズアレイを、ＴＰＴを
用いた従来の液晶ライトバルブに、おのおののレンズが
、各液晶開口部に対応するよう、平行光をレンズ側から
入射し、その映像パターンを各液晶開口部と位置合わせ
しながら接着した。そうして得られた液晶ライトバルブ
（第１図）に平行光を入射したところ、従来のレンズを
用いない液晶ライトバルブ（第２図）に比べてみかけの
透過率が５割以上アップした。（従来の透過率４０％に
対して６０％）また、従来のレンズを使わない液晶ライ
トバルブに比べて、液晶ライトバルブが正常に動作する
最大入射光量が平均で２倍以上になった。[Example 1] Glass substrate with optically polished surface (40 mm x 3 Q mm
Microlenses having a concavo-convex shape with a diameter of 65 μm were formed in a lattice shape on the surface of the microlens (1 mm) using a heat-deformable resin material using a pressure bonding and press molding method. (Japanese Unexamined Patent Publication No. 60-60756) The pitch of the grating is 65 μm and 80 μm in both the vertical and horizontal directions. (Fig. 5) This microlens array is applied to a conventional liquid crystal light valve using TPT. Parallel light is incident from the lens side so that each lens corresponds to each liquid crystal opening, and the image pattern is I glued it while aligning it with the liquid crystal opening. When parallel light was incident on the liquid crystal light valve thus obtained (Figure 1), the apparent transmittance increased by more than 50% compared to a conventional liquid crystal light valve that did not use a lens (Figure 2). (60% transmittance compared to 40% for conventional models) Also, compared to conventional liquid crystal light valves that do not use lenses, the maximum amount of incident light required for normal operation of the liquid crystal light valve is more than double on average.
本実施例で作製した樹脂製の凹凸状のマイクロレンズは
製法が極めて簡便であるため、上記効果を低コストで実
現できる。Since the resin-made concave-convex microlens produced in this example is extremely simple to manufacture, the above effects can be achieved at low cost.
またレンズの成型法としては圧着押圧成型法に限定され
るものではなく、例えば特開昭６０−６０７５６号に示
されたような熱変形による成型法でもよいし、ガラスの
結晶化を利用する成型法でもよいし、その他の方法でも
よい。Furthermore, the lens molding method is not limited to the pressure bonding molding method, but may also be a molding method using thermal deformation as shown in JP-A No. 60-60756, or a molding method that utilizes glass crystallization. This may be done by law or by other methods.
［実施例２］
表面を光学研磨したガラス基板（４０ｍｍＸ３０ｍｍＸ
２ｍｍ）の表面にイオン交換法を用いて、直径６５μｍ
の分布屈折率平板マイクロレンズを格子状に形成した。[Example 2] Glass substrate (40 mm x 30 mm x
2mm) using the ion exchange method, the diameter of 65μm
The distributed refractive index flat plate microlenses were formed in a lattice shape.
格子のピッチはたてよこにおのおの６５μｍ、８０μｍ
である。（第５図）この平板マイクロレンズを、ＴＰＴ
を用いた液晶ライトバルブに、おのおののレンズが、各
液晶開口部に対応するよう位置合わせしながら接着した
。そうして得られた液晶ライトバルブ（第３図）に平行
光を入射したところ、従来のレンズを用いない液晶ライ
トバルブ（第２図）に比べてみかけの透過率が５割以上
アップした。（従来の透過率４０％に対して６０％）ま
た、従来のレンズを使わない液晶ライトバルブに比べて
、液晶ライトバルブが正常に動作する最大入射光量が平
均で２倍以上になった。The pitch of the grating is 65μm and 80μm in both vertical and horizontal directions.
It is. (Fig. 5) This flat plate microlens is
Each lens was glued to a liquid crystal light valve using a liquid crystal light valve, with each lens aligned to correspond to each liquid crystal opening. When parallel light was incident on the resulting liquid crystal light valve (Figure 3), the apparent transmittance increased by more than 50% compared to a conventional liquid crystal light valve that did not use a lens (Figure 2). (60% transmittance compared to 40% for conventional models) Also, compared to conventional liquid crystal light valves that do not use lenses, the maximum amount of incident light required for normal operation of the liquid crystal light valve is more than double on average.
本実施例で得られた液晶ライトバルブは、レンズ部分が
ガラスなので実施例１に比べて化学的安定性、熱安定性
が良く、信願性が高い。The liquid crystal light valve obtained in this example has better chemical stability and thermal stability than Example 1 because the lens portion is made of glass, and has higher reliability.
［実施例３］
レンズアレイとして分布屈折率平板マイクロレンズアレ
イ化わりに、分布屈折率ロッドレンズを格子状に集積し
たマイクロレンズアレイを用いた以外は実施例２と同様
にして液晶ライトバルブを作製した。そうして得られた
液晶ライトバルブに平行光を入射したところ、実施例２
と同様な効果が得られた。[Example 3] A liquid crystal light valve was produced in the same manner as in Example 2, except that instead of using a distributed index flat plate microlens array as a lens array, a microlens array in which distributed index rod lenses were integrated in a lattice shape was used. . When parallel light was incident on the liquid crystal light valve thus obtained, Example 2
A similar effect was obtained.
［実施例４］
表面を光学研磨したガラス基板（４０ｍｍＸ３０ｍｍＸ
１．１ｍｍ）の表面にイオン交換法を用いて、直径６５
μｍの分布屈折率平板マイクロレンズを格子状に形成し
た。格子のピッチはたてよこにおのおの６５μｍ、８０
μｍである。（第５図）この平板マイクロレンズが集積
された基板を更に光学研磨した後、レンズ面と逆の表面
にパッシベーション膜、遮光体、透明電極を設けた。こ
こで得られた基板を対向基板とし、常法によりセル化す
ることにより、液晶を封止している透明基板にレンズが
集積されている液晶ライトバルブが得られた。そうして
得られた液晶ライトバルブ（第４図）に平行光を入射し
たところ、従来のレンズを用いない液晶ライトバルブ（
第２図）に比べみがけの透過率が５割以上アップした。[Example 4] Glass substrate (40 mm x 30 mm x
1.1 mm) using the ion exchange method, the diameter 65
A plate microlens with a distributed refractive index of μm was formed in a lattice shape. The pitch of the grating is 65 μm and 80 μm in both vertical and horizontal directions.
It is μm. (FIG. 5) After further optically polishing the substrate on which the flat microlenses were integrated, a passivation film, a light shield, and a transparent electrode were provided on the surface opposite to the lens surface. The substrate obtained here was used as a counter substrate and formed into cells by a conventional method, thereby obtaining a liquid crystal light valve in which lenses were integrated on a transparent substrate sealing liquid crystal. When parallel light was incident on the liquid crystal light valve obtained in this way (Figure 4), it was found that the liquid crystal light valve that does not use a conventional lens (
Compared to Figure 2), the transmittance of the brushing was increased by more than 50%.
また、従来のレンズを使わない液晶ライトバルブに比べ
て、液晶ライトバルブが正常に動作する最大入射光量が
平均で２倍以上になった。Additionally, compared to conventional liquid crystal light valves that do not use lenses, the maximum amount of incident light required for normal operation of the liquid crystal light valve is more than double on average.
本実施例で得られた液晶ライトバルブは、接着部分がな
く、実施例２、実施例３に比べて更に信頼性が高い。The liquid crystal light valve obtained in this example has no adhesive portion and is more reliable than Examples 2 and 3.
［実施例５］
表面を光学研磨したガラス基板（４０ｍｍＸ３０ｍｍＸ
１ｍｍ）の表面にイオン交換法を用いて、短径６５μｍ
、長径８０μｍの長円状の分布屈折率平板マイクロレン
ズを格子状に形成した。格子のピッチはたてよこにおの
おの６５μｍ、８０μｍである。（第６図）このマイク
ロレンズアレイを、ＴＰＴを用いた従来の液晶ライトバ
ルブに、おのおののレンズが各液晶開口部に対応するよ
うに位置合わせをしながら接着した。そうして得られた
液晶ライトバルブに平行光を入射したところ、従来のレ
ンズを用いない液晶ライトバルブ（第２図）に比べてみ
かけの透過率が７５％以上アップした。[Example 5] Glass substrate (40 mm x 30 mm x
1 mm) surface using the ion exchange method, the short diameter is 65 μm.
, elliptical distributed index flat microlenses with a major diameter of 80 μm were formed in a lattice shape. The pitch of the grating is 65 μm and 80 μm in the vertical and horizontal directions, respectively. (FIG. 6) This microlens array was bonded to a conventional liquid crystal light valve using TPT while being aligned so that each lens corresponded to each liquid crystal opening. When parallel light was incident on the liquid crystal light valve thus obtained, the apparent transmittance increased by more than 75% compared to a conventional liquid crystal light valve that does not use a lens (Figure 2).
（従来の透過率４０％が７０％）また、従来のレンズを
使わない液晶ライトバルブに比べて、液晶ライトバルブ
が正常に動作する最大入射光量が平均で３倍以上になっ
た。(70% transmittance compared to 40% in the past) Also, compared to conventional liquid crystal light valves that do not use lenses, the maximum amount of incident light required for normal operation of the liquid crystal light valve is more than three times higher on average.
本実施例で得られた液晶ライトバルブは、レンズの形状
が長円形であり画素の形状に近いため、実施例１〜４の
液晶ライトバルブに比べて、より入射光を有効に利用す
ることができた。The liquid crystal light valve obtained in this example has an oval lens shape that is close to the shape of a pixel, so it can utilize incident light more effectively than the liquid crystal light valves of Examples 1 to 4. did it.
［実施例６］
表面を光学研磨したガラス基板（４０ｍｍＸ３０ｍｍＸ
１ｍｍ）の表面にイオン交換法を用いて、直径６５μｍ
の分布屈折率平板マイクロレンズをハチの巣状に形成し
た。個々のハチの巣の形状は正六角形で、大きさは対角
線の長さ１３０μｍである。[Example 6] Glass substrate (40 mm x 30 mm x
65 μm in diameter using the ion exchange method on the surface of
The distributed refractive index flat microlenses were formed into a honeycomb shape. The shape of each honeycomb is a regular hexagon, and the size is 130 μm in diagonal length.
このマイクロレンズアレイを、ＴＰＴを用いた画素をハ
チの巣状に形成しである液晶ライトバルブに、おのおの
のレンズが各液晶開口部に対応するように位置合わせし
ながら接着した。そうして得られた液晶ライトバルブに
平行光を入射したところ、従来のレンズを用いない画素
をハチの巣状形成しである液晶ライトバルブに比べて、
みかけの透過率が８０％以上アップした。（従来の透過
率４０％が７５％）また、従来のレンズを使わない液晶
ライ１〜バルブに比べて、液晶ライトバルブが正常に動
作する最大入射光量が平均で３倍以上になった。This microlens array was bonded to a liquid crystal light valve having TPT pixels formed in a honeycomb shape while aligning each lens so that each lens corresponded to each liquid crystal opening. When parallel light was incident on the liquid crystal light valve obtained in this way, compared to the conventional liquid crystal light valve in which pixels are formed in a honeycomb shape without using lenses,
The apparent transmittance increased by more than 80%. (Conventional transmittance of 40% to 75%) Also, compared to the conventional liquid crystal light valve that does not use a lens, the maximum amount of incident light for the liquid crystal light valve to operate normally is more than three times as large on average.
本実施例で得られた液晶ライトバルブは、レンズアレイ
がハチの巣状に形成しであるため、実施例１〜３の液晶
ライトパルプに比べて、より入射光を有効に利用するこ
とができた。Since the liquid crystal light valve obtained in this example has a lens array formed in a honeycomb shape, it is possible to use incident light more effectively than the liquid crystal light pulp of Examples 1 to 3. Ta.
［実施例７］
表面を光学研磨したガラス基板（４０ｍｍＸ３０ｍｍＸ
１ｍｍ）の表面に熱硬化樹脂を材料として、圧着押圧成
型法によって、たて６５μｍ、よこ８０μｍの凹凸状の
マイクロレンズを格子状に形成した。この表面形状は球
面レンズを光軸方向からみて長方形にみえるように切っ
た形状である。格子のピッチはたてよこにおのおの６５
μｍ１８０μｍである。（第７図）このマイクロレンズ
アレイを、ＴＰＴを用いた従来の液晶ライトバルブに、
おのおののレンズが各液晶開口部に対応するように位置
合わせをしながら接着した。そうして得られた液晶ライ
トバルブに平行光を入射したところ、従来のレンズを用
いない液晶ライトバルブ（第２図）に比べて、みかけの
透過率が１２０％以上アップした。（従来の透過率４０
％が９０％）また、従来のレンズを使わない液晶ライト
バルブに比べて、液晶ライトバルブが正常に動作する最
大入射光量が平均で１０倍以上になった。[Example 7] Glass substrate (40 mm x 30 mm x
Microlenses having a concave and convex shape of 65 μm in length and 80 μm in width were formed in a lattice shape on a surface of 1 mm) using a thermosetting resin as a material by pressure molding. This surface shape is a shape obtained by cutting a spherical lens so that it appears rectangular when viewed from the optical axis direction. The pitch of the grid is 65 in each direction.
μm is 180 μm. (Figure 7) This microlens array can be used in a conventional liquid crystal light valve using TPT.
Each lens was glued while being aligned so that it corresponded to each liquid crystal aperture. When parallel light was incident on the liquid crystal light valve thus obtained, the apparent transmittance increased by more than 120% compared to a conventional liquid crystal light valve that does not use a lens (Figure 2). (Conventional transmittance 40
(% is 90%) Furthermore, compared to conventional liquid crystal light valves that do not use lenses, the maximum amount of incident light required for normal operation of liquid crystal light valves is more than 10 times higher on average.
本実施例で得られた液晶ライトバルブは、レンズが、画
素ピッチをほとんどカバーしており、実施例１〜６の液
晶ライトバルブに比べて、より入射光を有効に利用する
ことができる。In the liquid crystal light valve obtained in this example, the lens covers most of the pixel pitch, and can utilize incident light more effectively than the liquid crystal light valves of Examples 1 to 6.
［実施例８］
表面を光学研磨したガラス基板（４０ｍｍＸ３０ｍｍＸ
１ｍｍ）の表面に熱硬化樹脂を材料として、圧着押圧成
型法によって、たて６５μｍ、よこ８０μｍの凹凸状の
マイクロフレネルレンズを格子状に形成した。格子のピ
ッチはたてよこにおのおの６５μｍ、８０μｍである。[Example 8] Glass substrate (40 mm x 30 mm x
A micro Fresnel lens with concave and convex surfaces of 65 μm in length and 80 μm in width was formed in a lattice shape using thermosetting resin as a material on the surface of the lens. The pitch of the grating is 65 μm and 80 μm in the vertical and horizontal directions, respectively.
（第８図）このマイクロレンズアレイを、ＴＰＴを用い
た従来の液晶ライ１−パルプに、おのおののレンズが各
液晶開口部に対応するように位置合わせをしながら接着
した。そうして得られた液晶ライトバルブに平行光を入
射したところ、従来のレンズを用いない液晶ライトバル
ブ（第２図）に比べて、みかけの透過率が１２０％以上
アップした。（従来の透過率４０％が９０％）また、従
来のレンズを使わない液晶ライトバルブに比べて、液晶
ライトバルブが正常に動作する最大入射光量が平均で１
０倍以上になった。(FIG. 8) This microlens array was adhered to a conventional liquid crystal lye-1-pulp using TPT while aligning each lens so that it corresponded to each liquid crystal opening. When parallel light was incident on the liquid crystal light valve thus obtained, the apparent transmittance increased by more than 120% compared to a conventional liquid crystal light valve that does not use a lens (Figure 2). (Conventional transmittance of 40% is 90%) Also, compared to conventional liquid crystal light valves that do not use lenses, the maximum amount of incident light for which liquid crystal light valves operate normally is 1 on average.
It became more than 0 times.
本実施例で得られた液晶ライトバルブは、レンズが、画
素ピッチをほとんどカバーしており、実施例１〜６の液
晶ライトバルブに比べて、より入射光を有効に利用する
ことができる。In the liquid crystal light valve obtained in this example, the lens covers most of the pixel pitch, and can utilize incident light more effectively than the liquid crystal light valves of Examples 1 to 6.
［実施例９］
レンズとしてマイクロフレネルレンズの代わりに電子ビ
ーム描画のグレーティングレンズを用いた以外は実施例
８と同様にして液晶ライトバルブを作製した。そうして
得られた液晶ライトバルブに平行光を入射したところ、
実施例８と同様な効果が得られた。[Example 9] A liquid crystal light valve was produced in the same manner as in Example 8 except that a grating lens drawn by an electron beam was used as a lens instead of a micro Fresnel lens. When parallel light was incident on the liquid crystal light valve obtained in this way,
The same effects as in Example 8 were obtained.
［実施例１０］
実施例１〜８で得られた液晶ライトバルブを用いて第９
図に示した構成でビデオプロジェクタ−画素数４４０Ｘ
４８０を作製した。本実施例のビデオプロジェクタ−は
液晶ライトバルブに入射する光の平行度が高いため、前
述の効果がストレートに出て当初の期待通り明るい画面
を得ることができた。下表に、得られた画面の明るさを
、全光束の光量で示した。（用いた光源は同一のもの）
しかも、本実施例のビデオプロジェクタ−はより明るい
光源を使えるため、更に明るい画面も可能である。[Example 10] Using the liquid crystal light valves obtained in Examples 1 to 8, the ninth
Video projector with the configuration shown in the figure - number of pixels 440X
480 was produced. In the video projector of this example, since the light incident on the liquid crystal light valve had a high degree of parallelism, the above-mentioned effect was directly produced and a bright screen could be obtained as originally expected. The table below shows the brightness of the screen obtained in terms of the amount of total luminous flux. (The light source used was the same)
Moreover, since the video projector of this embodiment can use a brighter light source, an even brighter screen is possible.
［発明の効果］
本発明の液晶ライトバルブは、各液晶開口部に略光軸が
合わされた複数のレンズを該液晶開口部の前に設置した
という簡単な構造によって、みかけの透過率が増加する
とともに、入射光量を増やしても正常に動作するという
効果を有する。[Effects of the Invention] The liquid crystal light valve of the present invention has a simple structure in which a plurality of lenses whose optical axes are substantially aligned with each liquid crystal opening are installed in front of the liquid crystal opening, and the apparent transmittance is increased. In addition, it has the effect of operating normally even if the amount of incident light is increased.
また、かかる液晶ライトバルブを使うことにより、明る
い画面をもったビデオプロジェクタ−を実現できるとい
う効果がある。Furthermore, by using such a liquid crystal light valve, it is possible to realize a video projector with a bright screen.
第１図は、本発明の液晶ライトバルブの断面図。
第２図は、従来の液晶ライトバルブの断面図。
第３図及び第４図は、本発明の液晶ライトバルブの断面
図。
第５図〜第８図は、本発明の液晶ライトバルブに用いら
れるレンズ部分の表面図。
第９図は、本発明のビデオプロジェクタ−の構成図。
■・・・従来の液晶ライトバルブ
２・・・凹凸状のマイクロレンズ部分をもつガラス基板
３・・・接着材
４・・・対向基板
５・・・Ｔ Ｐ Ｔ基板
６・・・液晶
７・・・ＴＰＴ配線
８・・・遮光体
９・・・ガラス基板
１０・・・樹脂性のマイクロレンズ
１１・・・入射光
１２・・・出射光
１３・・・出射光の無い領域
１４・・・分布屈折率マイクロレンズ部分をもつガラス
基板
１５・・・分布屈折率マイクロレンズ
１６・・・液晶を封止している透明基板にレンズアレイ
が集積されている液晶ライトバルブ１７・・・レンズア
レイが集積されている対向基板１８・・・マイクロレン
ズ部分
１９・・・長円形の表面形状をもつレンズ部分２０・・
・マイクロフレネルレンズ部分２１・・・長円形の表面
形状をもつマイクロレンズ部分
２２・・・ランプ
２３・・・リフレクタ−
２４・・・干渉フィルター
２５・・・ダイクロイックミラー
２６・・・ライトガイド
２７・・・ミラー
２８・・・本発明の液晶ライトバルブ
２９・・・ダイクロインクプリズム
３０・・・プロジェクションレンズ
３１・・・スクリーン
以上
出願人 セイコーエプソン株式会社
−）告
１ｉｉｉ
ニ
狛
第８図FIG. 1 is a sectional view of the liquid crystal light valve of the present invention. FIG. 2 is a cross-sectional view of a conventional liquid crystal light valve. 3 and 4 are cross-sectional views of the liquid crystal light valve of the present invention. 5 to 8 are surface views of the lens portion used in the liquid crystal light valve of the present invention. FIG. 9 is a configuration diagram of a video projector of the present invention. ■...Conventional liquid crystal light valve 2...Glass substrate with uneven microlens portion 3...Adhesive material 4...Counter substrate 5...T P T substrate 6...Liquid crystal 7... ... TPT wiring 8 ... Light shielding body 9 ... Glass substrate 10 ... Resin microlens 11 ... Incident light 12 ... Outgoing light 13 ... Area 14 with no outgoing light... Glass substrate 15 having a distributed refractive index microlens portion...Distributed refractive index microlens 16...Liquid crystal light valve 17 in which a lens array is integrated on a transparent substrate that seals liquid crystal...A lens array is Integrated counter substrate 18...microlens portion 19...lens portion 20 having an oval surface shape...
・Micro Fresnel lens portion 21...Micro lens portion 22 with an oval surface shape...Lamp 23...Reflector 24...Interference filter 25...Dichroic mirror 26...Light guide 27. ...Mirror 28...Liquid crystal light valve of the present invention 29...Dichroic ink prism 30...Projection lens 31...Screen and above Applicant Seiko Epson Corporation -) Announcement 1iii Nikoma Figure 8
Claims (5)
軸が合わされた複数のレンズを該液晶開口部の前に設置
したことを特徴とする液晶ライトバルブ。(1) A liquid crystal light valve characterized in that a plurality of lenses whose optical axes are substantially aligned with each liquid crystal opening are installed in front of the liquid crystal opening.
徴とする第１項記載の液晶ライトバルブ。(2) The liquid crystal light valve according to item 1, wherein the lens is a concave-convex microlens.
とを特徴とする第１項記載の液晶ライトバルブ。(3) The liquid crystal light valve according to item 1, wherein the lens is a distributed index flat plate microlens.
ていることを特徴とする第１項、第２項、又は第３項記
載の液晶ライトバルブ。(4) The liquid crystal light valve according to item 1, item 2, or item 3, wherein a lens is integrated on a transparent substrate that seals the liquid crystal.
、第２項、第３項又は第４項記載の液晶ライトバルブに
より構成されたものであることを特徴とするビデオプロ
ジェクター。(5) A video projector characterized in that the projection light amount control means for projecting onto a projection object is constituted by the liquid crystal light valve described in item 1, item 2, item 3, or item 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63014830A JPH01189685A (en) | 1988-01-26 | 1988-01-26 | Liquid crystal light valve and video projector with liquid crystal light valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63014830A JPH01189685A (en) | 1988-01-26 | 1988-01-26 | Liquid crystal light valve and video projector with liquid crystal light valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01189685A true JPH01189685A (en) | 1989-07-28 |
Family
ID=11871955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63014830A Pending JPH01189685A (en) | 1988-01-26 | 1988-01-26 | Liquid crystal light valve and video projector with liquid crystal light valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01189685A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0425266A2 (en) * | 1989-10-26 | 1991-05-02 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal projection display apparatus |
| EP0431886A2 (en) * | 1989-12-05 | 1991-06-12 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal projection color display apparatus |
| JPH03182719A (en) * | 1989-12-13 | 1991-08-08 | Nippon Sheet Glass Co Ltd | Liquid crystal display element |
| EP0450780A2 (en) * | 1990-04-05 | 1991-10-09 | Matsushita Electric Industrial Co., Ltd. | Optical microelement array and its production method |
| US5151801A (en) * | 1989-11-30 | 1992-09-29 | Pioneer Electronic Corporation | Liquid crystal display apparatus providing improved illumination via trucated prisms |
| JPH04353824A (en) * | 1991-05-31 | 1992-12-08 | Sharp Corp | Projection type liquid crystal display device |
| WO1994003843A1 (en) * | 1992-08-05 | 1994-02-17 | Technische Universität Dresden | Holographic display |
| EP0609055A1 (en) * | 1993-01-25 | 1994-08-03 | Matsushita Electric Industrial Co., Ltd. | Light valve apparatus and display system using same |
| US5583669A (en) * | 1992-07-15 | 1996-12-10 | Matsushita Electric Industrial Co., Ltd. | Light valve apparatus, and projection display system and view-finder system employing said light valve apparatus |
| US5777804A (en) * | 1994-10-28 | 1998-07-07 | Kabushiki Kaisha Toshiba | Projection-type display apparatus |
| JPH11295722A (en) * | 1998-04-15 | 1999-10-29 | Seiko Epson Corp | Liquid crystal panel for projection type liquid crystal device and projection type liquid crystal device |
| KR19990080391A (en) * | 1998-04-16 | 1999-11-05 | 김영환 | Liquid crystal display device and manufacturing method thereof |
| JP2002236282A (en) * | 1990-03-23 | 2002-08-23 | Matsushita Electric Ind Co Ltd | Liquid crystal display element |
| US6882389B2 (en) | 1990-03-23 | 2005-04-19 | Matsushita Electric Industrial Co., Ltd. | Transflective LCD device with different transmission parts each having a particular transmittance |
| US7079238B2 (en) | 1997-09-19 | 2006-07-18 | Kla-Tencor Technologies Corporation | Sample inspection system |
| US8025822B2 (en) | 2005-04-26 | 2011-09-27 | Seiko Epson Corporation | Method of manufacturing a microlens substrate, an opposed substrate for a liquid crystal panel, a liquid crystal panel and a projection type display apparatus |
| US20180267362A1 (en) * | 2014-10-07 | 2018-09-20 | Kevin Thomas Gahagan | Direct view display device and light unit for direct view display device |
-
1988
- 1988-01-26 JP JP63014830A patent/JPH01189685A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03140920A (en) * | 1989-10-26 | 1991-06-14 | Matsushita Electric Ind Co Ltd | Projection type display device and liquid crystal display device used for this projection type display device |
| EP0425266A2 (en) * | 1989-10-26 | 1991-05-02 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal projection display apparatus |
| EP0425266A3 (en) * | 1989-10-26 | 1991-12-27 | Matsushita Electric Industrial Co., Ltd | Liquid crystal projection display apparatus |
| US5126863A (en) * | 1989-10-26 | 1992-06-30 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal projection display apparatus having two microlens arrays |
| US5151801A (en) * | 1989-11-30 | 1992-09-29 | Pioneer Electronic Corporation | Liquid crystal display apparatus providing improved illumination via trucated prisms |
| EP0431886A2 (en) * | 1989-12-05 | 1991-06-12 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal projection color display apparatus |
| EP0431886A3 (en) * | 1989-12-05 | 1991-10-16 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal projection color display apparatus |
| US5144462A (en) * | 1989-12-05 | 1992-09-01 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal projection color display apparatus having microlens arrays with controllable refractive power |
| JPH03182719A (en) * | 1989-12-13 | 1991-08-08 | Nippon Sheet Glass Co Ltd | Liquid crystal display element |
| US6990595B2 (en) | 1990-03-23 | 2006-01-24 | Matsushita Electric Industrial Co., Ltd. | Data processing apparatus |
| US7006181B2 (en) | 1990-03-23 | 2006-02-28 | Matsushita Electric Industrial Co., Ltd. | Data processing apparatus |
| US7821489B2 (en) | 1990-03-23 | 2010-10-26 | Panasonic Corporation | Data processing apparatus |
| US7120809B2 (en) | 1990-03-23 | 2006-10-10 | Matsushita Electric Industrial Co., Ltd. | Data processing apparatus |
| US7024572B2 (en) | 1990-03-23 | 2006-04-04 | Matsushita Electric Industrial Co., Ltd. | Data processing apparatus |
| US6952248B2 (en) | 1990-03-23 | 2005-10-04 | Matsushita Electric Industrial Co., Ltd. | Data processing apparatus |
| US6909483B2 (en) | 1990-03-23 | 2005-06-21 | Matsushita Electric Industrial Co., Ltd. | Transflective LCD device with different transmission parts each having a particular transmittance |
| US6882389B2 (en) | 1990-03-23 | 2005-04-19 | Matsushita Electric Industrial Co., Ltd. | Transflective LCD device with different transmission parts each having a particular transmittance |
| JP2002236282A (en) * | 1990-03-23 | 2002-08-23 | Matsushita Electric Ind Co Ltd | Liquid crystal display element |
| EP0450780A2 (en) * | 1990-04-05 | 1991-10-09 | Matsushita Electric Industrial Co., Ltd. | Optical microelement array and its production method |
| JPH04353824A (en) * | 1991-05-31 | 1992-12-08 | Sharp Corp | Projection type liquid crystal display device |
| US5689315A (en) * | 1992-07-15 | 1997-11-18 | Matsushita Electric Industrial Co., Ltd. | Light valve apparatus which is employed in a projection display system and in a view-finder system |
| US5583669A (en) * | 1992-07-15 | 1996-12-10 | Matsushita Electric Industrial Co., Ltd. | Light valve apparatus, and projection display system and view-finder system employing said light valve apparatus |
| WO1994003843A1 (en) * | 1992-08-05 | 1994-02-17 | Technische Universität Dresden | Holographic display |
| EP0609055A1 (en) * | 1993-01-25 | 1994-08-03 | Matsushita Electric Industrial Co., Ltd. | Light valve apparatus and display system using same |
| US5430562A (en) * | 1993-01-25 | 1995-07-04 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal light valve including between light and light valve microlenses and two reflecting layers with a matrix of openings |
| US5777804A (en) * | 1994-10-28 | 1998-07-07 | Kabushiki Kaisha Toshiba | Projection-type display apparatus |
| US5982563A (en) * | 1994-10-28 | 1999-11-09 | Kabushiki Kaisha Toshiba | Projection-type display apparatus |
| US7079238B2 (en) | 1997-09-19 | 2006-07-18 | Kla-Tencor Technologies Corporation | Sample inspection system |
| JPH11295722A (en) * | 1998-04-15 | 1999-10-29 | Seiko Epson Corp | Liquid crystal panel for projection type liquid crystal device and projection type liquid crystal device |
| KR19990080391A (en) * | 1998-04-16 | 1999-11-05 | 김영환 | Liquid crystal display device and manufacturing method thereof |
| US8025822B2 (en) | 2005-04-26 | 2011-09-27 | Seiko Epson Corporation | Method of manufacturing a microlens substrate, an opposed substrate for a liquid crystal panel, a liquid crystal panel and a projection type display apparatus |
| US20180267362A1 (en) * | 2014-10-07 | 2018-09-20 | Kevin Thomas Gahagan | Direct view display device and light unit for direct view display device |
| US10838255B2 (en) * | 2014-10-07 | 2020-11-17 | Corning Incorporated | Direct view display device and light unit for direct view display device |
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