JPS6419942U - - Google Patents
Info
- Publication number
- JPS6419942U JPS6419942U JP11469587U JP11469587U JPS6419942U JP S6419942 U JPS6419942 U JP S6419942U JP 11469587 U JP11469587 U JP 11469587U JP 11469587 U JP11469587 U JP 11469587U JP S6419942 U JPS6419942 U JP S6419942U
- Authority
- JP
- Japan
- Prior art keywords
- illumination lamp
- imaging lens
- projected
- overhead projector
- reflective
- 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.)
- Granted
Links
- 238000005286 illumination Methods 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 claims description 3
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Description
図面はこの考案の一実施例を示すもので、第１
図は平面図、第２図は縦断正面図、第３図は側面
図である。
２…反射式フレネルレンズ、１１…照明ランプ
、１２…結像レンズ、１３…反射ミラー。
The drawing shows one embodiment of this invention.
The figure is a plan view, FIG. 2 is a vertical front view, and FIG. 3 is a side view. 2...Reflection Fresnel lens, 11...Illumination lamp, 12...Imaging lens, 13...Reflection mirror.
Claims (1)
べき透明原稿を照明ランプで照明し、結像レンズ
と反射ミラーとにより投影するようにしたオーバ
ーヘツドプロジエクタにおいて、前記反射式フレ
ネルレンズの中心を軸として前記照明ランプと前
記結像レンズとを点対称位置に配設したことを特
徴とするオーバーヘツドプロジエクタ。 In an overhead projector, a transparent original to be projected superimposed on a reflective Fresnel lens is illuminated by an illumination lamp, and the image is projected by an imaging lens and a reflective mirror. An overhead projector characterized in that an illumination lamp and the imaging lens are arranged in point-symmetrical positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987114695U JPH0521070Y2 (en) | 1987-07-27 | 1987-07-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987114695U JPH0521070Y2 (en) | 1987-07-27 | 1987-07-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6419942U true JPS6419942U (en) | 1989-01-31 |
| JPH0521070Y2 JPH0521070Y2 (en) | 1993-05-31 |
Family
ID=31355678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987114695U Expired - Lifetime JPH0521070Y2 (en) | 1987-07-27 | 1987-07-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0521070Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59173051U (en) * | 1983-05-02 | 1984-11-19 | 株式会社リコー | Reflective overhead projector |
-
1987
- 1987-07-27 JP JP1987114695U patent/JPH0521070Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59173051U (en) * | 1983-05-02 | 1984-11-19 | 株式会社リコー | Reflective overhead projector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0521070Y2 (en) | 1993-05-31 |
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