JPS5749928A - Photometric correction device of zoom lens - Google Patents
Photometric correction device of zoom lensInfo
- Publication number
- JPS5749928A JPS5749928A JP12627780A JP12627780A JPS5749928A JP S5749928 A JPS5749928 A JP S5749928A JP 12627780 A JP12627780 A JP 12627780A JP 12627780 A JP12627780 A JP 12627780A JP S5749928 A JPS5749928 A JP S5749928A
- Authority
- JP
- Japan
- Prior art keywords
- aperture
- photometric
- zooming
- correcting
- exposure
- 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.)
- Pending
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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/02—Diaphragms
- G03B9/06—Two or more co-operating pivoted blades, e.g. iris type
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Control For Cameras (AREA)
Abstract
PURPOSE:To reduce a photometric error easily by providing an exposure correcting member which corrects an exposure aperture diameter by zooming and a photometric correcting member which corrects a photometric aperture diameter by zooming, and by correcting a difference between the exposure and photometric aperture diameters according to zooming. CONSTITUTION:On taking a picture, aperture blades 5 are held open and an aperture diameter in this state is determined on the basis of a position where the pin 15 of a toothed lock washer 3 moving in an optical axis direction corresponding variations in focal length by zooming comes into contact with the cam surface 17 of an open-aperture correcting cam member 16. Once a shutter is released, the release mechanism of a camera body side moves an automatic aperture lever 11 to the right in the figure, an automatic aperture ring 1 turns counterclockwise through the operation of a spring 9, and the toothed lock washer 3 also turns counterclockwise by a spring 13 through a pin 12 to turn a crank member 20 clockwise around a shaft 19 through the turning of the washer until a crank pin 22 meets the cam part 23 of an aperture cam ring 2, thereby stopping down a lens to an aperture diameter which corresponds to the turning position of this aperture ring 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12627780A JPS5749928A (en) | 1980-09-11 | 1980-09-11 | Photometric correction device of zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12627780A JPS5749928A (en) | 1980-09-11 | 1980-09-11 | Photometric correction device of zoom lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5749928A true JPS5749928A (en) | 1982-03-24 |
Family
ID=14931217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12627780A Pending JPS5749928A (en) | 1980-09-11 | 1980-09-11 | Photometric correction device of zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5749928A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58172632A (en) * | 1982-04-01 | 1983-10-11 | Minolta Camera Co Ltd | Exposure controller of camera with zoom lens |
| EP0481884A2 (en) * | 1990-10-16 | 1992-04-22 | Sony Corporation | Mechanism for detecting a rotation amount of a diaphragm for use in optical systems |
-
1980
- 1980-09-11 JP JP12627780A patent/JPS5749928A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58172632A (en) * | 1982-04-01 | 1983-10-11 | Minolta Camera Co Ltd | Exposure controller of camera with zoom lens |
| EP0481884A2 (en) * | 1990-10-16 | 1992-04-22 | Sony Corporation | Mechanism for detecting a rotation amount of a diaphragm for use in optical systems |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4273414A (en) | Zoom lens | |
| EP0102549B1 (en) | Lens changeover arrangement for use in photographic camera | |
| JPS6261127B2 (en) | ||
| JPS5749928A (en) | Photometric correction device of zoom lens | |
| US3997906A (en) | Diaphragm device in a camera lens | |
| JPS569728A (en) | Optical device with focus correcting mechanism | |
| US4178083A (en) | Camera containing a movable automatic dimmer strobo | |
| JPS56155908A (en) | Zoom lens structure | |
| JPS57154224A (en) | Focus detecting device of camera | |
| JPS568118A (en) | T.t.l. metering automatic aperture control type single- lens reflex camera | |
| US4134656A (en) | Means for transmitting information from lens barrel to camera body | |
| JPS57141608A (en) | Lens barrel enabling automatic adjustment of aperture diameter by object distance and guide number for flash photography | |
| US4473281A (en) | Compensating mechanism for zoom lens | |
| US3149548A (en) | Photographic objective lens | |
| JPS5819534Y2 (en) | Autofocus camera distance-aperture linkage mechanism | |
| JPS54115222A (en) | Auto focus camera provided with self timer | |
| GB1496818A (en) | Camera bellows device having an automatic diaphragm-interlocking mechanism | |
| KR930003549B1 (en) | Camera auto focus | |
| GB927286A (en) | Improvements in or relating to photographic cameras | |
| JPS6030738Y2 (en) | zoom lens | |
| JPS5611445A (en) | Quick return device of single-lens reflex camera | |
| JPS5633634A (en) | Mirror operating device in single-lens reflex camera | |
| SU498595A1 (en) | Lens aperture control in SLR cameras | |
| JPS55134821A (en) | Automatic exposure control camera | |
| JPS554056A (en) | Focusing optical device for single-lens reflex camera |