GB915335A - Improvements in or relating to detachable objective mounts for photographic apparatus - Google Patents
Improvements in or relating to detachable objective mounts for photographic apparatusInfo
- Publication number
- GB915335A GB915335A GB3548160A GB3548160A GB915335A GB 915335 A GB915335 A GB 915335A GB 3548160 A GB3548160 A GB 3548160A GB 3548160 A GB3548160 A GB 3548160A GB 915335 A GB915335 A GB 915335A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spindle
- sleeve
- objective
- focusing
- projector
- 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
- 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
- G03B19/00—Cameras
- G03B19/18—Motion-picture cameras
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection-Type Copiers In General (AREA)
- Lens Barrels (AREA)
- Variable Magnification In Projection-Type Copying Machines (AREA)
Abstract
915,335. Focusing lens mounts. KAMEBAUND KINOWERKE DRESDEN VEB. Oct. 17, 1960, No. 35481/60. Class 97 (1). A detachable objective mount for photographic apparatus comprises support means adapted for connection to the apparatus housing, a spindle supporting the objective lens carrier and axially adjustable in the support means for focusing, and a rotatable locking- device which, in one direction of rotation, acts to secure the objective mount to the apparatus housing, and in the other direction looks the spindle in relation to the support means. As shown in Fig. 1, the objective lens carrier 3 is rotatably mounted on a spindle 1 and held against axial displacement by parts 4 rigid with spindle 1. The latter extends through a bush 6, in which it has threaded engagement, and through a sleeve 8 rigid with bush 6 and carrying scale markings 9 for focusing purposes in cooperation with markings on the milled head 10 of spindle 1. A ring 12 rotatably mounted on sleeve 8 carries keys 13 for bayonet connection with a corresponding part 21 of the projector, and has a recess 14 (Fig. 3) in which is fixed a leaf-spring 17. A pin 15 extends through a slot in sleeve 8 and, when the objective mount is detached is pressed by leaf-spring 17 against spindle 1 to prevent rotation of the latter and thus preserve the previous focus setting. On attachment to a projector, a groove 2 of the objective carrier 3 is engaged by a pin to prevent rotation, and a key 18 on sleeve 8 engages a corresponding part 20 on the projector to hold sleeve 8 against rotation. As ring 12 is then rotated to make the bayonet connection, the relative movement between pin 15 and the helical boundary of recess 14 releases the constraint on spindle 1 to allow further focusing adjustment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3548160A GB915335A (en) | 1960-10-17 | 1960-10-17 | Improvements in or relating to detachable objective mounts for photographic apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3548160A GB915335A (en) | 1960-10-17 | 1960-10-17 | Improvements in or relating to detachable objective mounts for photographic apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB915335A true GB915335A (en) | 1963-01-09 |
Family
ID=10378214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3548160A Expired GB915335A (en) | 1960-10-17 | 1960-10-17 | Improvements in or relating to detachable objective mounts for photographic apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB915335A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2333852A (en) * | 1998-01-28 | 1999-08-04 | Umax Data Systems Inc | Camera lens focussing using a screw shaft |
-
1960
- 1960-10-17 GB GB3548160A patent/GB915335A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2333852A (en) * | 1998-01-28 | 1999-08-04 | Umax Data Systems Inc | Camera lens focussing using a screw shaft |
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