DE2317830C3 - Durchlicht-Schreibprojektor - Google Patents
Durchlicht-SchreibprojektorInfo
- Publication number
- DE2317830C3 DE2317830C3 DE19732317830 DE2317830A DE2317830C3 DE 2317830 C3 DE2317830 C3 DE 2317830C3 DE 19732317830 DE19732317830 DE 19732317830 DE 2317830 A DE2317830 A DE 2317830A DE 2317830 C3 DE2317830 C3 DE 2317830C3
- Authority
- DE
- Germany
- Prior art keywords
- transmitted light
- writing projector
- light writing
- lenses
- cylinder lenses
- 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
Links
- 230000000694 effects Effects 0.000 claims description 7
- 230000004313 glare Effects 0.000 claims description 7
- 238000005286 illumination Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 7
- 239000000969 carrier Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 1
- 239000011521 glass Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 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)
- Lenses (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732317830 DE2317830C3 (de) | 1973-04-09 | 1973-04-09 | Durchlicht-Schreibprojektor |
| FR7412339A FR2224783B1 (enExample) | 1973-04-09 | 1974-04-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732317830 DE2317830C3 (de) | 1973-04-09 | 1973-04-09 | Durchlicht-Schreibprojektor |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2317830A1 DE2317830A1 (de) | 1974-10-17 |
| DE2317830B2 DE2317830B2 (de) | 1979-09-06 |
| DE2317830C3 true DE2317830C3 (de) | 1980-06-19 |
Family
ID=5877521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19732317830 Expired DE2317830C3 (de) | 1973-04-09 | 1973-04-09 | Durchlicht-Schreibprojektor |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2317830C3 (enExample) |
| FR (1) | FR2224783B1 (enExample) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE418423B (sv) * | 1974-08-21 | 1981-05-25 | Minnesota Mining & Mfg | Kondensor, serskilt for anvendning i en arbetsprojektor |
| DE2840094A1 (de) * | 1978-09-12 | 1980-03-20 | Minnesota Mining & Mfg | Refraktor/reflektor-strahlungskonzentrator |
| US4436392A (en) * | 1983-01-03 | 1984-03-13 | Minnesota Mining And Manufacturing Company | Distortion correction for an overhead projector system |
| DE4335244B4 (de) * | 1993-10-15 | 2006-10-19 | Daimlerchrysler Ag | Anordnung zur Bildaufnahme |
-
1973
- 1973-04-09 DE DE19732317830 patent/DE2317830C3/de not_active Expired
-
1974
- 1974-04-08 FR FR7412339A patent/FR2224783B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2317830A1 (de) | 1974-10-17 |
| FR2224783A1 (enExample) | 1974-10-31 |
| FR2224783B1 (enExample) | 1978-12-01 |
| DE2317830B2 (de) | 1979-09-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: MINNESOTA MINING AND MANUFACTURING CO., 55133 SAIN |
|
| 8328 | Change in the person/name/address of the agent |
Free format text: RUSCHKE, O., DIPL.-ING., 1000 BERLIN RUSCHKE, H., DIPL.-ING. ROST, J., DIPL.-ING. ROTTER, U., DIPL.-CHEM. DR.RER.NAT., PAT.-ANW., 8000 MUENCHEN |