JPH02119683U - - Google Patents
Info
- Publication number
- JPH02119683U JPH02119683U JP1989028557U JP2855789U JPH02119683U JP H02119683 U JPH02119683 U JP H02119683U JP 1989028557 U JP1989028557 U JP 1989028557U JP 2855789 U JP2855789 U JP 2855789U JP H02119683 U JPH02119683 U JP H02119683U
- Authority
- JP
- Japan
- Prior art keywords
- image
- rear projection
- screen
- display device
- magnifying lens
- 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
- 230000002194 synthesizing effect Effects 0.000 claims 2
- 239000003086 colorant Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の第１実施例の構成を示す概略
構成図である。第２図は本考案の第２実施例の構
成を示す概略構成図である。第３図は本考案の第
３実施例を示す図である。第４図は本考案に係る
スクリーンの部分断面拡大図である。第５図は本
考案に係るスクリーンの平面図である。
７：拡大投写レンズ、８，６３：背面投写用ス
クリーン、６０：ミラー。
FIG. 1 is a schematic configuration diagram showing the configuration of a first embodiment of the present invention. FIG. 2 is a schematic configuration diagram showing the configuration of a second embodiment of the present invention. FIG. 3 is a diagram showing a third embodiment of the present invention. FIG. 4 is an enlarged partial sectional view of the screen according to the present invention. FIG. 5 is a plan view of the screen according to the present invention. 7: Magnifying projection lens, 8, 63: Rear projection screen, 60: Mirror.
Claims (1)
画像を拡大投影する拡大レンズ、及び画像が最終
的に投影される背面投写用スクリーンから構成さ
れる背面投写型表示装置において、 前記拡大レンズが前記スクリーンに対して張る
画角が８０゜以上１８０゜未満であり、かつ前記
スクリーンの入射系に全反射機能を有するサーキ
ユラーフレネルレンズが設けられていることを特
徴とする背面投写型表示装置。 (2) 前記画像形成装置が赤、緑、青の３色別に
画像を形成する手段であり、さらにそれら画像を
合成し単一光束とする画像合成手段を備え、 前記拡大レンズによつて拡大投影される画像が
その画像合成手段からの画像であることを特徴と
する請求項１記載の背面投写型表示装置。[Scope of claims for utility model registration] (1) At least an image forming device that forms an image;
In a rear projection display device comprising a magnifying lens for enlarging and projecting an image, and a rear projection screen on which the image is finally projected, the angle of view that the magnifying lens extends with respect to the screen is 80° or more and 180°. 1. A rear projection type display device, characterized in that the incident system of the screen is provided with a circular Fresnel lens having a total reflection function. (2) The image forming device is means for forming images in three colors of red, green, and blue, and further includes an image synthesizing means for synthesizing these images into a single beam of light, and the magnifying lens performs enlarged projection. 2. The rear projection type display device according to claim 1, wherein the image to be displayed is an image from the image combining means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989028557U JPH02119683U (en) | 1989-03-15 | 1989-03-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989028557U JPH02119683U (en) | 1989-03-15 | 1989-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02119683U true JPH02119683U (en) | 1990-09-26 |
Family
ID=31252028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989028557U Pending JPH02119683U (en) | 1989-03-15 | 1989-03-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02119683U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5919924A (en) * | 1982-07-24 | 1984-02-01 | Aporon Ongaku Kogyo Kk | Projecting device |
| JPS63225220A (en) * | 1987-03-16 | 1988-09-20 | Kawasaki Heavy Ind Ltd | Color image projector |
-
1989
- 1989-03-15 JP JP1989028557U patent/JPH02119683U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5919924A (en) * | 1982-07-24 | 1984-02-01 | Aporon Ongaku Kogyo Kk | Projecting device |
| JPS63225220A (en) * | 1987-03-16 | 1988-09-20 | Kawasaki Heavy Ind Ltd | Color image projector |
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