NL7013921A - - Google Patents
Info
- Publication number
- NL7013921A NL7013921A NL7013921A NL7013921A NL7013921A NL 7013921 A NL7013921 A NL 7013921A NL 7013921 A NL7013921 A NL 7013921A NL 7013921 A NL7013921 A NL 7013921A NL 7013921 A NL7013921 A NL 7013921A
- Authority
- NL
- Netherlands
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/40—Optical focusing aids
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Mechanical Optical Scanning Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US86085869A | 1969-09-23 | 1969-09-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7013921A true NL7013921A (enExample) | 1971-03-25 |
Family
ID=25334194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7013921A NL7013921A (enExample) | 1969-09-23 | 1970-09-21 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3606530A (enExample) |
| AR (1) | AR194920A1 (enExample) |
| AT (1) | AT304898B (enExample) |
| BE (1) | BE756484A (enExample) |
| CH (1) | CH535966A (enExample) |
| DE (1) | DE2046247C3 (enExample) |
| FR (1) | FR2062414A5 (enExample) |
| GB (1) | GB1266079A (enExample) |
| NL (1) | NL7013921A (enExample) |
| SE (1) | SE360746B (enExample) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743109A (en) * | 1987-09-04 | 1988-05-10 | Eastman Kodak Company | Slide projector with automatic slide warpage compensation |
-
0
- BE BE756484D patent/BE756484A/xx unknown
-
1969
- 1969-09-23 US US860858A patent/US3606530A/en not_active Expired - Lifetime
-
1970
- 1970-08-20 GB GB1266079D patent/GB1266079A/en not_active Expired
- 1970-09-18 DE DE2046247A patent/DE2046247C3/de not_active Expired
- 1970-09-21 NL NL7013921A patent/NL7013921A/xx unknown
- 1970-09-21 FR FR7034091A patent/FR2062414A5/fr not_active Expired
- 1970-09-22 AR AR231389A patent/AR194920A1/es active
- 1970-09-23 SE SE12920/70A patent/SE360746B/xx unknown
- 1970-09-23 CH CH1410670A patent/CH535966A/fr not_active IP Right Cessation
- 1970-09-23 AT AT858870A patent/AT304898B/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE2046247C3 (de) | 1974-10-17 |
| GB1266079A (enExample) | 1972-03-08 |
| DE2046247B2 (de) | 1974-03-21 |
| DE2046247A1 (de) | 1971-04-15 |
| AT304898B (de) | 1973-01-25 |
| FR2062414A5 (enExample) | 1971-06-25 |
| US3606530A (en) | 1971-09-20 |
| SE360746B (enExample) | 1973-10-01 |
| BE756484A (fr) | 1971-03-01 |
| CH535966A (fr) | 1973-04-15 |
| AR194920A1 (es) | 1973-08-30 |