JPH0318581U - - Google Patents
Info
- Publication number
- JPH0318581U JPH0318581U JP7914089U JP7914089U JPH0318581U JP H0318581 U JPH0318581 U JP H0318581U JP 7914089 U JP7914089 U JP 7914089U JP 7914089 U JP7914089 U JP 7914089U JP H0318581 U JPH0318581 U JP H0318581U
- Authority
- JP
- Japan
- Prior art keywords
- light
- linearly polarized
- liquid crystal
- crystal display
- display panel
- 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 claims description 10
- 230000010287 polarization Effects 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 3
- 238000003786 synthesis reaction Methods 0.000 claims 3
- 230000029553 photosynthesis Effects 0.000 description 3
- 238000010672 photosynthesis Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
第１図〜第３図は本考案の一実施例を示したも
ので、第１図は液晶表示装置の側面図、第２図は
光合成用プリズム板の一部分の拡大図、第３図は
液晶表示パネルに入射する直線偏光の振動方向と
液晶表示パネルの入射側偏光板の透過軸とを示す
図である。第４図は従来のプロジエクタ型液晶表
示装置の側面図、第５図は第４図の−線に沿
う断面図である。
１０……液晶表示パネル、１２……光源、１３
……光源ランプ、１４……リフレクタ、１５……
シリンドリカル凸レンズ、１６……シリンドリカ
ル凹レンズ、Ｌ……光源空の光（自然光）、１７
……偏光ビームスプリツタ、Ｌｐ……第１のＰ偏
光、Ｌｓ……Ｓ偏光、１９……旋光素子（1/2波
長板）、Ｌｐ′……第２のＰ偏光（Ｓ偏光の偏光
方向をπ／２ラジアン回転させた光）、２０……
光合成部、２１……光合成用プリズム板、２２…
…マイクロプリズム、２３ａ，２３ｂ……光路、
２４ａ，２４ｂ……ミラー。
Figures 1 to 3 show an embodiment of the present invention. Figure 1 is a side view of a liquid crystal display device, Figure 2 is an enlarged view of a portion of a photosynthesis prism plate, and Figure 3 is a liquid crystal display. FIG. 3 is a diagram showing the vibration direction of linearly polarized light incident on a display panel and the transmission axis of a polarizing plate on the incident side of the liquid crystal display panel. FIG. 4 is a side view of a conventional projector type liquid crystal display device, and FIG. 5 is a sectional view taken along the line - in FIG. 4. 10...Liquid crystal display panel, 12...Light source, 13
...Light source lamp, 14...Reflector, 15...
Cylindrical convex lens, 16... Cylindrical concave lens, L... Light source sky light (natural light), 17
...Polarized beam splitter, L p ...First P polarized light, L s ... S polarized light, 19... Optical rotation element (1/2 wavelength plate), L p '... Second P polarized light (S polarized light) light whose polarization direction has been rotated by π/2 radians), 20...
Photosynthesis section, 21... Photosynthesis prism plate, 22...
...Micro prism, 23a, 23b...light path,
24a, 24b... mirror.
Claims (1)
示を行なう液晶表示装置において、 光源からの光を偏光方向が互いに直交する２つ
の直線偏光に分離する偏光ビームスプリツタと、 この偏光ビームスプリツタで分離された２つの
直線偏光のうちの一方の直線偏光の偏光方向をπ
／２ラジアン回転させる旋光素子と、 前記偏光ビームスプリツタで分離された２つの
直線偏光のうちの他方の直線偏光と前記旋光素子
で偏光方向をπ／２ラジアン回転された前記一方
の直線偏光とを１つの光束に合成して前記液晶表
示パネルに入射させる光合成部とを備え、 かつ前記液晶表示パネルの入射側偏光板の透過
軸を、前記光合成部で合成された直線偏光の振動
方向と平行にするとともに、 前記光合成部は、一面に多数の三角柱状プリズ
ムを互いに連続させて平行に形成した光合成用プ
リズム板と、前記一方の直線偏光と他方の直線偏
光とを前記光合成用プリズム板に入射させる光路
とから構成したことを特徴とする液晶表示装置。[Claim for Utility Model Registration] A polarizing beam splitter that separates the light from the light source into two linearly polarized lights whose polarization directions are orthogonal to each other in a liquid crystal display device that displays light by inputting light from a light source into a liquid crystal display panel. The polarization direction of one of the two linearly polarized lights separated by this polarizing beam splitter is π.
an optical rotation element that rotates the polarized light by /2 radians; the other linearly polarized light of the two linearly polarized lights separated by the polarization beam splitter; and the one linearly polarized light whose polarization direction is rotated by π/2 radians by the optical rotation element; a light combining unit that combines the light beams into one light beam and makes the light beam enter the liquid crystal display panel, and the transmission axis of the polarizing plate on the incident side of the liquid crystal display panel is parallel to the vibration direction of the linearly polarized light combined in the light combining unit. At the same time, the light synthesis unit includes a light synthesis prism plate in which a large number of triangular prisms are formed in parallel to each other in series on one surface, and the one linearly polarized light and the other linearly polarized light are incident on the light synthesis prism plate. 1. A liquid crystal display device comprising:
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7914089U JPH0318581U (en) | 1989-07-06 | 1989-07-06 | |
| US07/426,871 US5042921A (en) | 1988-10-25 | 1989-10-23 | Liquid crystal display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7914089U JPH0318581U (en) | 1989-07-06 | 1989-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0318581U true JPH0318581U (en) | 1991-02-22 |
Family
ID=31623037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7914089U Pending JPH0318581U (en) | 1988-10-25 | 1989-07-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0318581U (en) |
-
1989
- 1989-07-06 JP JP7914089U patent/JPH0318581U/ja active Pending
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