JPH0267312U - - Google Patents
Info
- Publication number
- JPH0267312U JPH0267312U JP14696088U JP14696088U JPH0267312U JP H0267312 U JPH0267312 U JP H0267312U JP 14696088 U JP14696088 U JP 14696088U JP 14696088 U JP14696088 U JP 14696088U JP H0267312 U JPH0267312 U JP H0267312U
- Authority
- JP
- Japan
- Prior art keywords
- projection device
- image projection
- optical path
- charts
- light source
- 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
- 230000003287 optical effect Effects 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 239000004973 liquid crystal related substance Substances 0.000 description 5
Description
第１図および第２図はこの考案の第１実施例を
示し、第１図は液晶プロジエクタの光路系を示す
図、第２図はレンズ系の原理図、第３図および第
４図は第２実施例を示し、第３図は液晶プロジエ
クタの光路系を示す図、第４図はそのレンズ系の
原理図、第５図は従来の液晶プロジエクタの光路
系を示す図である。
１……光源、３，４……ダイクロイツクミラー
、５，６，７……全反射ミラー、８，９，１０…
…液晶表示パネル、１１……ダイクロイツクプリ
ズム、１３，１４……レンズ系、１３ａ，１３ｂ
，１４ａ，１４ｂ……凸レンズ。
Figures 1 and 2 show the first embodiment of this invention, Figure 1 is a diagram showing the optical path system of a liquid crystal projector, Figure 2 is a diagram showing the principle of the lens system, and Figures 3 and 4 are diagrams showing the optical path system of the liquid crystal projector. FIG. 3 is a diagram showing the optical path system of a liquid crystal projector, FIG. 4 is a diagram showing the principle of the lens system, and FIG. 5 is a diagram showing the optical path system of a conventional liquid crystal projector. 1... Light source, 3, 4... Dichroic mirror, 5, 6, 7... Total reflection mirror, 8, 9, 10...
...Liquid crystal display panel, 11...Dichroic prism, 13, 14...Lens system, 13a, 13b
, 14a, 14b... Convex lenses.
Claims (1)
て合成画像を投影する画像投影装置において、 上記複数のチヤートのうち少なくとも１つを基
準チヤートとし、この基準チヤートよりも上記光
源からの光の光路が長いチヤートの光路上に照度
分布を補正する光学系を介在させたことを特徴と
する画像投影装置。[Claims for Utility Model Registration] In an image projection device that projects a composite image by irradiating light rays from one light source onto a plurality of charts, at least one of the plurality of charts is defined as a reference chart, and an image projection device that An image projection device characterized in that an optical system for correcting illuminance distribution is interposed on the optical path of a chart having a long optical path of light from the light source.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14696088U JPH0267312U (en) | 1988-11-10 | 1988-11-10 | |
| US07/424,128 US5097323A (en) | 1988-01-25 | 1989-10-19 | Liquid crystal projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14696088U JPH0267312U (en) | 1988-11-10 | 1988-11-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0267312U true JPH0267312U (en) | 1990-05-22 |
Family
ID=31416936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14696088U Pending JPH0267312U (en) | 1988-01-25 | 1988-11-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0267312U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994022042A1 (en) * | 1993-03-16 | 1994-09-29 | Seiko Epson Corporation | Projection type display device |
-
1988
- 1988-11-10 JP JP14696088U patent/JPH0267312U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994022042A1 (en) * | 1993-03-16 | 1994-09-29 | Seiko Epson Corporation | Projection type display device |
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