JPS5629220A - Detector for whether lens is mounted or not of lens interchangeable camera - Google Patents
Detector for whether lens is mounted or not of lens interchangeable cameraInfo
- Publication number
- JPS5629220A JPS5629220A JP10452179A JP10452179A JPS5629220A JP S5629220 A JPS5629220 A JP S5629220A JP 10452179 A JP10452179 A JP 10452179A JP 10452179 A JP10452179 A JP 10452179A JP S5629220 A JPS5629220 A JP S5629220A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- lever
- pin
- interchangeable lens
- information
- 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
Abstract
PURPOSE: To detect whether an interchangeable lens is mounted or not by clamping the electric signal corresponding to lens information to a predetermined value during mounting of the interchangeable lens.
CONSTITUTION: When an interchangeable lens 1 is mounted, a lock pin 13 is pressed to rotate a control lever 19 counterclockwise and an information lead-in lever 15 clockwise respectively. When the mounting is completed, the pin 13 falls into a locking hole 6. Hereupon, the angle at which the lever 15 rotates corresponds to the moving distance of the pin 13 and since this moving distance is constant, the scanning position of a brush 20 on digital code pattern is constant as well. Hence, if the digital signal of this time is beforehand so set as to differ from that corresponding to lens information and this is detected in comparison with a reference value, whether the lens 1 is perfectly mounted to the camera or not may be detected.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10452179A JPS5629220A (en) | 1979-08-18 | 1979-08-18 | Detector for whether lens is mounted or not of lens interchangeable camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10452179A JPS5629220A (en) | 1979-08-18 | 1979-08-18 | Detector for whether lens is mounted or not of lens interchangeable camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5629220A true JPS5629220A (en) | 1981-03-24 |
Family
ID=14382788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10452179A Pending JPS5629220A (en) | 1979-08-18 | 1979-08-18 | Detector for whether lens is mounted or not of lens interchangeable camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5629220A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58211127A (en) * | 1982-06-02 | 1983-12-08 | Minolta Camera Co Ltd | Lens interchangeable type camera |
| JPS59164881A (en) * | 1983-03-11 | 1984-09-18 | 真空理工株式会社 | Electric furnace for thermal analysis |
| US4509846A (en) * | 1983-04-21 | 1985-04-09 | Minolta Camera Kabushiki Kaisha | Camera system |
| US4540262A (en) * | 1982-03-05 | 1985-09-10 | Minolta Camera | Camera accessory with data producer |
| JPH01170831A (en) * | 1987-12-26 | 1989-07-05 | Yoshiharu Uchihashi | Laver quality measuring instrument |
-
1979
- 1979-08-18 JP JP10452179A patent/JPS5629220A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4540262A (en) * | 1982-03-05 | 1985-09-10 | Minolta Camera | Camera accessory with data producer |
| JPS58211127A (en) * | 1982-06-02 | 1983-12-08 | Minolta Camera Co Ltd | Lens interchangeable type camera |
| JPS59164881A (en) * | 1983-03-11 | 1984-09-18 | 真空理工株式会社 | Electric furnace for thermal analysis |
| US4509846A (en) * | 1983-04-21 | 1985-04-09 | Minolta Camera Kabushiki Kaisha | Camera system |
| JPH01170831A (en) * | 1987-12-26 | 1989-07-05 | Yoshiharu Uchihashi | Laver quality measuring instrument |
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