GB677704A - Improvements relating to focussing devices for objectives, especially of optical projectors for still pictures - Google Patents
Improvements relating to focussing devices for objectives, especially of optical projectors for still picturesInfo
- Publication number
- GB677704A GB677704A GB31292/50A GB3129250A GB677704A GB 677704 A GB677704 A GB 677704A GB 31292/50 A GB31292/50 A GB 31292/50A GB 3129250 A GB3129250 A GB 3129250A GB 677704 A GB677704 A GB 677704A
- Authority
- GB
- United Kingdom
- Prior art keywords
- objectives
- improvements relating
- still pictures
- optical projectors
- focussing devices
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
677,704. Lens mounts. AGFA CAMERA WERK MUNCHEN, U.S. ADMINISTRATION. Dec. 22, 1950 [Dec. 27, 1949], No. 31292/50. Drawings to Specification. Class 97 (i). An objective is focused by a friction roller engaging the mount. The friction roller, rotatable by a milled knob, may be mounted to project through a transverse slot in a tube in which the lens mount slides, the tube being lined with velvet to reduce friction.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE677704X | 1949-12-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB677704A true GB677704A (en) | 1952-08-20 |
Family
ID=6594157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31292/50A Expired GB677704A (en) | 1949-12-27 | 1950-12-22 | Improvements relating to focussing devices for objectives, especially of optical projectors for still pictures |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB677704A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3060797A (en) * | 1959-09-03 | 1962-10-30 | Bausch & Lomb | Slide projector |
US3145249A (en) * | 1962-01-02 | 1964-08-18 | Bausch & Lomb | Endoscope window |
-
1950
- 1950-12-22 GB GB31292/50A patent/GB677704A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3060797A (en) * | 1959-09-03 | 1962-10-30 | Bausch & Lomb | Slide projector |
US3145249A (en) * | 1962-01-02 | 1964-08-18 | Bausch & Lomb | Endoscope window |
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