GB937245A - Variable focal length lens mount - Google Patents
Variable focal length lens mountInfo
- Publication number
- GB937245A GB937245A GB3884360A GB3884360A GB937245A GB 937245 A GB937245 A GB 937245A GB 3884360 A GB3884360 A GB 3884360A GB 3884360 A GB3884360 A GB 3884360A GB 937245 A GB937245 A GB 937245A
- Authority
- GB
- United Kingdom
- Prior art keywords
- knob
- disc
- focal length
- cam
- objective
- 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
- G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
-
- 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
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
937,245. Variable focal-length objectives. M. C. SCHNEIDER. Nov. 11, 1960 [Dec. 12, 1959], No. 38843/60. Class 97 (1). In an objective and mount, two or more optical components can be moved along the optical axis at different speeds in order to vary the focal length by means of a rotatable disc which is provided with cam faces and is parallel to the optic axis of the objective. As shown (Figs. 3 and 4), lens systems 11a, 15a slidable in a tube 1a by means of members 11, 15 are adjusted on rotation of a knob 3 by means of a cam disc 6a secured to the knob 3 and having two cam slots 9, 13 respectively engaged by pins 10, 14 on the members 11, 15. The pins 10, 14 also slide in longitudinal slots 12, 16 in the tube 1a. The knob 3 is provided with a spring detent 18 which is alternately engageable in two grooves 17, 19, the groove 19 being provided with a number of holes 20 for releasably holding the knob 3 at various preset focal length settings. In an alternative embodiment (Fig. 1), in which the disc 6 is eccentrically pivoted at 5 with respect to the knob 3, the disc is coupled to the knob by means of a pin and slot connections 7, 8. The knob 3 may alternatively be connected to the disc by gear means.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH27127A DE1119651B (en) | 1959-12-12 | 1959-12-12 | Device on photographic or cinematographic lenses with axially displaceable optical elements |
Publications (1)
Publication Number | Publication Date |
---|---|
GB937245A true GB937245A (en) | 1963-09-18 |
Family
ID=7430676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3884360A Expired GB937245A (en) | 1959-12-12 | 1960-11-11 | Variable focal length lens mount |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH381965A (en) |
DE (1) | DE1119651B (en) |
GB (1) | GB937245A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59104613A (en) * | 1982-12-07 | 1984-06-16 | Matsushita Electric Ind Co Ltd | Lens moving device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1261390B (en) * | 1962-05-24 | 1968-02-15 | Zeiss Carl Fa | Pancratic lens |
-
1959
- 1959-12-12 DE DESCH27127A patent/DE1119651B/en active Pending
-
1960
- 1960-10-24 CH CH1188760A patent/CH381965A/en unknown
- 1960-11-11 GB GB3884360A patent/GB937245A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59104613A (en) * | 1982-12-07 | 1984-06-16 | Matsushita Electric Ind Co Ltd | Lens moving device |
JPH0363046B2 (en) * | 1982-12-07 | 1991-09-27 | Matsushita Electric Ind Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
DE1119651B (en) | 1961-12-14 |
CH381965A (en) | 1964-09-15 |
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