JPS63107433U - - Google Patents
Info
- Publication number
- JPS63107433U JPS63107433U JP20212386U JP20212386U JPS63107433U JP S63107433 U JPS63107433 U JP S63107433U JP 20212386 U JP20212386 U JP 20212386U JP 20212386 U JP20212386 U JP 20212386U JP S63107433 U JPS63107433 U JP S63107433U
- Authority
- JP
- Japan
- Prior art keywords
- projection lens
- lamp house
- fresnel mirror
- light source
- optical path
- 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 3
- 230000003287 optical effect Effects 0.000 claims 2
- 238000005286 illumination Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
- Liquid Crystal (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
第１図は本考案の反射式オーバーヘツドプロジ
エクタを示す外観図である。第２図は本考案の反
射式オーバーヘツドプロジエクタを示す断面図で
ある。
１…基台、２…ミラーフレネル板、８，９…支
柱、１２…投影ヘツド部、１５…ランプハウス、
１６…光源、２２…コンバージヨンレンズ、２６
…投影レンズ、２９…投影ミラー、４０…液晶投
影アダプタ、４１…液晶表示板。
FIG. 1 is an external view showing the reflective overhead projector of the present invention. FIG. 2 is a sectional view showing the reflective overhead projector of the present invention. 1... Base, 2... Mirror Fresnel board, 8, 9... Support, 12... Projection head section, 15... Lamp house,
16...Light source, 22...Conversion lens, 26
...projection lens, 29...projection mirror, 40...liquid crystal projection adapter, 41...liquid crystal display board.
Claims (1)
の基台の上方に支持手段を介して支持され、照明
用の光源を内蔵したランプハウスと、このランプ
ハウスに取り付けられた投影レンズとを備えた反
射式オーバーヘツドプロジエクタにおいて、 前記フレネルミラーから投影レンズに至る光路
中で、かつ前記光源からフレネルミラーに至る光
路を遮らない位置に透過型液晶を着脱自在に取り
付けるとともに、前記投影レンズの焦点距離を変
えるための焦点距離変更手段を設けたことを特徴
とする反射式オーバーヘツドプロジエクタ。[Claims for Utility Model Registration] A base on which a Fresnel mirror is arranged, a lamp house supported above the base via a support means and containing a built-in light source for illumination, and a lamp house attached to the lamp house. In a reflective overhead projector equipped with a projection lens, a transmissive liquid crystal is removably attached in the optical path from the Fresnel mirror to the projection lens and at a position that does not block the optical path from the light source to the Fresnel mirror. A reflective overhead projector further comprising a focal length changing means for changing the focal length of the projection lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20212386U JPS63107433U (en) | 1986-12-26 | 1986-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20212386U JPS63107433U (en) | 1986-12-26 | 1986-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63107433U true JPS63107433U (en) | 1988-07-11 |
Family
ID=31166214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20212386U Pending JPS63107433U (en) | 1986-12-26 | 1986-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63107433U (en) |
-
1986
- 1986-12-26 JP JP20212386U patent/JPS63107433U/ja active Pending
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