JPS55106422A - Power source switch of distance measuring circuit - Google Patents
Power source switch of distance measuring circuitInfo
- Publication number
- JPS55106422A JPS55106422A JP1400579A JP1400579A JPS55106422A JP S55106422 A JPS55106422 A JP S55106422A JP 1400579 A JP1400579 A JP 1400579A JP 1400579 A JP1400579 A JP 1400579A JP S55106422 A JPS55106422 A JP S55106422A
- Authority
- JP
- Japan
- Prior art keywords
- measuring circuit
- distance measuring
- power source
- pressure
- distance
- 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 perform power source connection to the distance measuring circuit through simple operation by forming the distance ring peripheral surface of the camera by a pressure-sensitive member and operating a switching circuit by the pressure sensing signal of the pressure-sensitive material.
CONSTITUTION: A focusing lens 1 is extended from or returned into the camera body A and is operated by turning of a distance ring 2. This operation causes the focusing display signal X to be sent to the visual display lamp 31 of a distance measuring circuit 3. When the focusing is displayed, all required is to stop turning the distance ring 2. The distance measuring circuit 3 is connected to a power source E via switching circuit 4 and the input end 41 of this switching circuit 4 is connected to the pressure-sensitive member 21 of the distance ring 2. The pressure-sensitive member is formed by conductive rubber. When the distance ring is turned, it receives pressing force to considerably lower resistance value and therefore the power source may be connected to the distance measuring circuit.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1400579A JPS55106422A (en) | 1979-02-09 | 1979-02-09 | Power source switch of distance measuring circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1400579A JPS55106422A (en) | 1979-02-09 | 1979-02-09 | Power source switch of distance measuring circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55106422A true JPS55106422A (en) | 1980-08-15 |
Family
ID=11849091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1400579A Pending JPS55106422A (en) | 1979-02-09 | 1979-02-09 | Power source switch of distance measuring circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55106422A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57170107U (en) * | 1981-04-21 | 1982-10-26 | ||
JPS6266215A (en) * | 1985-09-19 | 1987-03-25 | Mitsutoyo Mfg Corp | Automatic driving type optical equipment |
JPS6442639A (en) * | 1987-08-08 | 1989-02-14 | Olympus Optical Co | Automatic focusing system |
-
1979
- 1979-02-09 JP JP1400579A patent/JPS55106422A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57170107U (en) * | 1981-04-21 | 1982-10-26 | ||
JPS6266215A (en) * | 1985-09-19 | 1987-03-25 | Mitsutoyo Mfg Corp | Automatic driving type optical equipment |
JPS6442639A (en) * | 1987-08-08 | 1989-02-14 | Olympus Optical Co | Automatic focusing system |
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