JPS54134424A - Automatic focusing device for single lens reflex camera - Google Patents
Automatic focusing device for single lens reflex cameraInfo
- Publication number
- JPS54134424A JPS54134424A JP4181178A JP4181178A JPS54134424A JP S54134424 A JPS54134424 A JP S54134424A JP 4181178 A JP4181178 A JP 4181178A JP 4181178 A JP4181178 A JP 4181178A JP S54134424 A JPS54134424 A JP S54134424A
- Authority
- JP
- Japan
- Prior art keywords
- focusing
- range finding
- light
- taking
- automatic focusing
- 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
Landscapes
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
PURPOSE: To effect automatic focusing operation of high accuracy with the use of a simple construction by forming a reflecting portion at an inclination in a portion of a focusing plate.
CONSTITUTION: An inclined portion 29 is formed at the center of a focusing plate 26 for totally reflecting and focusing the taking light from a taking lens 22, which is removably mounted to a camera body 21, with the use of a movable mirror 25 which is disposed in front of a shutter 23 and a film plane 24. A range finding light receiving element 30 is mounted on the camera body 21 in front of a pentagonal prism 27. And, the taking light is partially reflected in a consecutive manner upon the semitransparent portion 29 and the movable mirror 25 and then is focused through a relay lens 31 upon the element 30 thereby to accomplish the focusing operation. Thus, the range finding optical path can be sufficiently elongated without increasing the size of the camera as a whole, and the range finding flux of light is generated from the focusing plate 26, thus attaining the desired purposes.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4181178A JPS54134424A (en) | 1978-04-11 | 1978-04-11 | Automatic focusing device for single lens reflex camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4181178A JPS54134424A (en) | 1978-04-11 | 1978-04-11 | Automatic focusing device for single lens reflex camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54134424A true JPS54134424A (en) | 1979-10-18 |
Family
ID=12618687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4181178A Pending JPS54134424A (en) | 1978-04-11 | 1978-04-11 | Automatic focusing device for single lens reflex camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54134424A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5760122U (en) * | 1980-09-27 | 1982-04-09 | ||
US4525434A (en) * | 1982-10-19 | 1985-06-25 | Mitsubishi Kinzoku Kabushiki Kaisha | Copper alloy having high resistance to oxidation for use in leads on semiconductor devices and clad material containing said alloy |
-
1978
- 1978-04-11 JP JP4181178A patent/JPS54134424A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5760122U (en) * | 1980-09-27 | 1982-04-09 | ||
US4525434A (en) * | 1982-10-19 | 1985-06-25 | Mitsubishi Kinzoku Kabushiki Kaisha | Copper alloy having high resistance to oxidation for use in leads on semiconductor devices and clad material containing said alloy |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5428133A (en) | Optical path extension device with focus detection function | |
JPS5231736A (en) | Ttl light measure device for single lens reflex camera | |
JPS5243422A (en) | Finder for camera of large size picture | |
JPS552271A (en) | Single-lens reflex camera having strobo device | |
JPS5260619A (en) | Finder optical system | |
JPS5652710A (en) | Mark finder for camera | |
JPS5383737A (en) | Single lens reflex camera | |
JPS54134424A (en) | Automatic focusing device for single lens reflex camera | |
JPS5461522A (en) | Automatic focusing device | |
JPS5588041A (en) | Finder of single-lens reflex camera | |
JPS54107337A (en) | Focusing device of single-lens reflex camera | |
JPS55105239A (en) | Finder of single-lens reflex camera | |
JPS5546729A (en) | Finder optical system | |
JPS528825A (en) | Single lens reflex camera wherein an instant diaphragm action is pos b y an automatic adjustable light measure exposure device | |
JPS55106424A (en) | Single-lens reflex camera | |
JPS51149023A (en) | Single lens reflex camera | |
JPS5447632A (en) | Camera for photographing data | |
JPS55106425A (en) | Single-lens reflex camera | |
JPS5235630A (en) | Enlarging optical system for finder | |
JPS5567732A (en) | Finder optical system | |
JPS5492321A (en) | Optical system for focus detecting of single-lens reflex camera | |
JPS55106427A (en) | Single-lens reflex camera | |
FR2431716A1 (en) | Pocket camera with TTL view-finding - has semi-reflecting mirror deflecting light to film and allowing light to reach eyepiece | |
JPS5285813A (en) | Single lens reflex camera | |
JPS55127534A (en) | Optical device for distance measurement in single-lens reflex camera |