JP2585399Y2 - オーバーヘッドプロジェクタ - Google Patents
オーバーヘッドプロジェクタInfo
- Publication number
- JP2585399Y2 JP2585399Y2 JP1991076471U JP7647191U JP2585399Y2 JP 2585399 Y2 JP2585399 Y2 JP 2585399Y2 JP 1991076471 U JP1991076471 U JP 1991076471U JP 7647191 U JP7647191 U JP 7647191U JP 2585399 Y2 JP2585399 Y2 JP 2585399Y2
- Authority
- JP
- Japan
- Prior art keywords
- prism
- mirror
- overhead projector
- reflector
- light source
- 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.)
- Expired - Lifetime
Links
- 238000005286 illumination Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 230000033764 rhythmic process Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Projection Apparatus (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9013469U DE9013469U1 (de) | 1990-09-25 | 1990-09-25 | Schreibprojektor mit seitlichem Beleuchtungsteil |
| DE9013469.5 | 1990-09-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0489942U JPH0489942U (enExample) | 1992-08-05 |
| JP2585399Y2 true JP2585399Y2 (ja) | 1998-11-18 |
Family
ID=6857802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991076471U Expired - Lifetime JP2585399Y2 (ja) | 1990-09-25 | 1991-09-24 | オーバーヘッドプロジェクタ |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2585399Y2 (enExample) |
| DE (1) | DE9013469U1 (enExample) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3728191C1 (de) * | 1987-08-24 | 1989-02-23 | Medium Vertriebsgesellschaft F | Durchlicht-Schreibprojektor |
-
1990
- 1990-09-25 DE DE9013469U patent/DE9013469U1/de not_active Expired - Lifetime
-
1991
- 1991-09-24 JP JP1991076471U patent/JP2585399Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE9013469U1 (de) | 1991-02-14 |
| JPH0489942U (enExample) | 1992-08-05 |
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