JPS4975139A - - Google Patents
Info
- Publication number
- JPS4975139A JPS4975139A JP48118860A JP11886073A JPS4975139A JP S4975139 A JPS4975139 A JP S4975139A JP 48118860 A JP48118860 A JP 48118860A JP 11886073 A JP11886073 A JP 11886073A JP S4975139 A JPS4975139 A JP S4975139A
- Authority
- JP
- Japan
- 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
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
- G03B21/14—Details
- G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects
-
- 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
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/18—Focusing aids
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
- Automatic Focus Adjustment (AREA)
- Focusing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722251757 DE2251757B2 (de) | 1972-10-21 | 1972-10-21 | Magazinstehbildwerfer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4975139A true JPS4975139A (en:Method) | 1974-07-19 |
| JPS5646132B2 JPS5646132B2 (en:Method) | 1981-10-31 |
Family
ID=5859716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11886073A Expired JPS5646132B2 (en:Method) | 1972-10-21 | 1973-10-22 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3861794A (en:Method) |
| JP (1) | JPS5646132B2 (en:Method) |
| AU (1) | AU6032773A (en:Method) |
| DD (1) | DD109087A5 (en:Method) |
| DE (1) | DE2251757B2 (en:Method) |
| FR (1) | FR2204306A5 (en:Method) |
| GB (1) | GB1423615A (en:Method) |
| HK (1) | HK38379A (en:Method) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3966315A (en) * | 1975-01-30 | 1976-06-29 | Hanimex Pty. Ltd. | Lens focusing means for slide projectors |
| US4018520A (en) * | 1975-04-15 | 1977-04-19 | Gaf Corporation | Projector focusing mechanism |
| DE2521760A1 (de) * | 1975-05-16 | 1976-11-25 | Rollei Werke Franke Heidecke | Diastehbildwerfer mit selbsttaetiger scharfeinstellung |
| DE3207152A1 (de) * | 1982-02-27 | 1983-09-22 | Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar | Automatische fokussiereinrichtung fuer diaprojektoren |
| DE3325042A1 (de) * | 1983-07-12 | 1984-02-23 | Kodak Ag, 7000 Stuttgart | Selbstfokussiervorrichtung |
| US5609404A (en) * | 1996-04-16 | 1997-03-11 | Eastman Kodak Company | Apparatus and related method for correcting slide warpage in a slide projector |
| US6050690A (en) * | 1998-01-08 | 2000-04-18 | Siemens Information And Communication Networks, Inc. | Apparatus and method for focusing a projected image |
| CN104460216B (zh) * | 2014-11-19 | 2016-05-18 | 青岛橡胶谷知识产权有限公司 | 一种幻灯机数控机械传动机构 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3628863A (en) * | 1969-07-28 | 1971-12-21 | Eastman Kodak Co | Remote focusing override mechanism for an automatic focusing photographic projector |
-
1972
- 1972-10-21 DE DE19722251757 patent/DE2251757B2/de not_active Ceased
-
1973
- 1973-09-14 AU AU60327/73A patent/AU6032773A/en not_active Expired
- 1973-09-21 GB GB4443473A patent/GB1423615A/en not_active Expired
- 1973-10-15 DD DD174052A patent/DD109087A5/xx unknown
- 1973-10-19 FR FR7337383A patent/FR2204306A5/fr not_active Expired
- 1973-10-19 US US408054A patent/US3861794A/en not_active Expired - Lifetime
- 1973-10-22 JP JP11886073A patent/JPS5646132B2/ja not_active Expired
-
1979
- 1979-06-14 HK HK383/79A patent/HK38379A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1423615A (en) | 1976-02-04 |
| AU6032773A (en) | 1975-03-20 |
| US3861794A (en) | 1975-01-21 |
| FR2204306A5 (en:Method) | 1974-05-17 |
| HK38379A (en) | 1979-06-22 |
| JPS5646132B2 (en:Method) | 1981-10-31 |
| DE2251757B2 (de) | 1976-05-20 |
| DD109087A5 (en:Method) | 1974-10-12 |
| DE2251757A1 (de) | 1974-03-28 |