JPS60163439U - Overhead projector projection lens - Google Patents
Overhead projector projection lensInfo
- Publication number
- JPS60163439U JPS60163439U JP5206984U JP5206984U JPS60163439U JP S60163439 U JPS60163439 U JP S60163439U JP 5206984 U JP5206984 U JP 5206984U JP 5206984 U JP5206984 U JP 5206984U JP S60163439 U JPS60163439 U JP S60163439U
- Authority
- JP
- Japan
- Prior art keywords
- projection lens
- screen
- lens
- overhead projector
- optical body
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は反射型オーバーへッドプロジ蚕りターの例を示
す光学配置図、第２図は投影レンズにおける像面湾曲の
様子を示す光学系図、第３図は反射型オーバーヘッドプ
ロジェクタ−の投影レンズによる像面湾曲の様子を示す
光学系図、第４図は本考案の一実施例を示す光学系図、
第５図は本考案の他の実施例を示す光学系図である。
□１・・・原稿載置台、２・・・集光光学
体（フレネルレンズ）、３・・・照明光ｔ ４・・・投
影レンズ、６・・・スクリーン、７・・・像面湾曲の面
、８・・・集光光学体の光軸、９・・・投影レンズの軸
。Figure 1 is an optical layout diagram showing an example of a reflective overhead projector, Figure 2 is an optical system diagram showing the curvature of field in the projection lens, and Figure 3 is a diagram showing the projection lens of a reflective overhead projector. An optical system diagram showing the state of field curvature, FIG. 4 is an optical system diagram showing one embodiment of the present invention,
FIG. 5 is an optical system diagram showing another embodiment of the present invention.
□1... Original table, 2... Condensing optical body (Fresnel lens), 3... Illumination light t 4... Projection lens, 6... Screen, 7... Field curvature surface, 8... optical axis of condensing optical body, 9... axis of projection lens;
Claims (1)
の載置台上に載せられた原稿を照明する照明光源と、上
記原稿からの反射光をスクリーン−に投影して原稿の像
をスクリーン上に結像させる投影レンズとを有してなり
、この投影レンズの光軸と上記集光光学体の光軸とがず
れてなる反射型オーバーへ゛どドプロジェクターにおい
て、上記段、影レンズは、同レンズによって生ずる像面
湾曲の面が投影範囲において上記スクリーンの面と近似
するように傾けて配置されたオーバーヘッドプロジェク
タ−の投影レンズ。A document mounting table including a condensing optical body and a reflecting optical body; an illumination light source for illuminating the document placed on the placing table; and a screen for projecting reflected light from the document onto a screen. In a reflective over-the-door projector comprising a projection lens for forming an image above, and in which the optical axis of the projection lens and the optical axis of the condensing optical body are shifted from each other, the stage and shadow lens include: A projection lens for an overhead projector, which is tilted and arranged so that the surface of field curvature produced by the lens approximates the surface of the screen in the projection range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5206984U JPS60163439U (en) | 1984-04-10 | 1984-04-10 | Overhead projector projection lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5206984U JPS60163439U (en) | 1984-04-10 | 1984-04-10 | Overhead projector projection lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60163439U true JPS60163439U (en) | 1985-10-30 |
Family
ID=30571683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5206984U Pending JPS60163439U (en) | 1984-04-10 | 1984-04-10 | Overhead projector projection lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60163439U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000241917A (en) * | 1998-12-24 | 2000-09-08 | Canon Inc | Illuminator and projecting device provided therewith |
| JP2011090321A (en) * | 1998-12-24 | 2011-05-06 | Canon Inc | Illumination device and photographing device having the same |
-
1984
- 1984-04-10 JP JP5206984U patent/JPS60163439U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000241917A (en) * | 1998-12-24 | 2000-09-08 | Canon Inc | Illuminator and projecting device provided therewith |
| JP2011090321A (en) * | 1998-12-24 | 2011-05-06 | Canon Inc | Illumination device and photographing device having the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS60163439U (en) | Overhead projector projection lens | |
| JPS5989337U (en) | overhead projector | |
| JPS5979837U (en) | Projection video device | |
| JPS59170849U (en) | overhead projector | |
| JPS608916U (en) | optical scanning device | |
| JPS5836748U (en) | Original scanning device | |
| JPS6116544U (en) | Reflector projector lighting system | |
| JPS59168747U (en) | Reflected light projector | |
| JPS58113053U (en) | Document illumination device for image processing equipment | |
| JPS603809U (en) | Illumination optical system equipment | |
| JPS5811740U (en) | Original lighting equipment | |
| JPS6111148U (en) | Reflector projector lighting system | |
| JPS58122359U (en) | Halogen light bulb with reflector | |
| JPS58188652U (en) | Original illumination device | |
| JPS60118133U (en) | overhead projector | |
| JPS58166636U (en) | Original optical image projection device | |
| JPS59144635U (en) | Imaging lighting device | |
| JPS58178131U (en) | image projection device | |
| JPS6132912U (en) | Lighting device for stereoscopic recognition | |
| JPS5999437U (en) | Exposure light source device that uses multiple lamps | |
| JPS616830U (en) | Original illumination device | |
| JPS59189637U (en) | reflective projector | |
| JPS5899963U (en) | Light source for document illumination | |
| JPS5857859U (en) | lighting equipment | |
| JPS59138840U (en) | overhead projector |