JPH0485335U - - Google Patents
Info
- Publication number
- JPH0485335U JPH0485335U JP12662590U JP12662590U JPH0485335U JP H0485335 U JPH0485335 U JP H0485335U JP 12662590 U JP12662590 U JP 12662590U JP 12662590 U JP12662590 U JP 12662590U JP H0485335 U JPH0485335 U JP H0485335U
- Authority
- JP
- Japan
- Prior art keywords
- close
- overhead projector
- glass
- softens
- scatters
- 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
- 239000005357 flat glass Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Description
第１図は本考案のオーバーヘツドプロジエクタ
の概要図であり、第２図は本考案の全体説明図で
あり、第３図は本考案のオーバーヘツドプロジエ
クタの接写部を構成する板硝子の断面概要図であ
る。
Ａ……透過光線、Ｆ……フイルム、Ｓ……スク
リーン、１……オーバーヘツドプロジエクタ、２
……接写部、３……板硝子、３ａ……エツチング
処理面、４……光源、５……光学系装置。
FIG. 1 is a schematic diagram of the overhead projector of the present invention, FIG. 2 is an overall explanatory diagram of the present invention, and FIG. 3 is a cross-section of a glass plate constituting the close-up portion of the overhead projector of the present invention. It is a schematic diagram. A...Transmitted light beam, F...Film, S...Screen, 1...Overhead projector, 2
...Close-up section, 3...Plate glass, 3a...Etched surface, 4...Light source, 5...Optical system device.
Claims (1)
部上に載置したフイルムの文字又は図形等を投影
させるオーバーヘツドプロジエクタにおいて、 前記接写部は透光性の板硝子から成り、該板硝
子の表面へは筆記又は拭取消去が自在で且つ光源
から人体へ向けて投射される透過光線を散乱緩和
させるエツチング処理面を形成させたことを特徴
とするオーバーヘツドプロジエクタ。[Scope of Claim for Utility Model Registration] In an overhead projector that projects characters, figures, etc. on a film placed on a close-up portion onto a screen vertically installed at an appropriate position on a wall surface, etc., the close-up portion is made of transparent plate glass. 1. An overhead projector comprising: a glass plate having an etched surface that can be freely written on or erased by wiping, and that scatters and softens transmitted light beams projected from a light source toward a human body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12662590U JP2528142Y2 (en) | 1990-11-30 | 1990-11-30 | Overhead projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12662590U JP2528142Y2 (en) | 1990-11-30 | 1990-11-30 | Overhead projector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0485335U true JPH0485335U (en) | 1992-07-24 |
| JP2528142Y2 JP2528142Y2 (en) | 1997-03-05 |
Family
ID=31874169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12662590U Expired - Lifetime JP2528142Y2 (en) | 1990-11-30 | 1990-11-30 | Overhead projector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2528142Y2 (en) |
-
1990
- 1990-11-30 JP JP12662590U patent/JP2528142Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2528142Y2 (en) | 1997-03-05 |