JPS5515112A - Focus matching device of reflex camera - Google Patents
Focus matching device of reflex cameraInfo
- Publication number
- JPS5515112A JPS5515112A JP8655478A JP8655478A JPS5515112A JP S5515112 A JPS5515112 A JP S5515112A JP 8655478 A JP8655478 A JP 8655478A JP 8655478 A JP8655478 A JP 8655478A JP S5515112 A JPS5515112 A JP S5515112A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- matching device
- reflex camera
- distance
- eyepiece
- 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
- Viewfinders (AREA)
- Variable Magnification In Projection-Type Copying Machines (AREA)
Abstract
PURPOSE: To enable focusing of high magnification to be accomplished by inserting a magnifying convex lens between a focus plate and a pentagonal prism and inserting a correcting concave lens between the pentagonal prism and eyepiece lens.
CONSTITUTION: A magnifying convex lens 4 is inserted between a focus plate 1 and the bottom of a pentagonal prism 5 and a correcting concave lens 6 is inserted between the rear face of the prism 5 and eyepiece lens 7. Then, the image of a distance measuring part 2 is magnified by the lens 4 to become a virtual image 2c. Since the distance from this virtual image 2c up to the eyepiece lens 6 will differ from the distance between the lens 6 and distance measuring part 2, the diopter of the eyepiece lens 7 needs be corrected. For this purpose, a concave lens 6 is provided for correction of the dipopter. In this way, focusing of high magnification may be accomplished.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8655478A JPS5515112A (en) | 1978-07-15 | 1978-07-15 | Focus matching device of reflex camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8655478A JPS5515112A (en) | 1978-07-15 | 1978-07-15 | Focus matching device of reflex camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5515112A true JPS5515112A (en) | 1980-02-02 |
Family
ID=13890215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8655478A Pending JPS5515112A (en) | 1978-07-15 | 1978-07-15 | Focus matching device of reflex camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5515112A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60205532A (en) * | 1984-03-30 | 1985-10-17 | Fuji Xerox Co Ltd | Optical system of copying machine |
JPS63273080A (en) * | 1987-04-30 | 1988-11-10 | Yokogawa Electric Corp | Transmitter/receiver for ultrasonic range finder |
-
1978
- 1978-07-15 JP JP8655478A patent/JPS5515112A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60205532A (en) * | 1984-03-30 | 1985-10-17 | Fuji Xerox Co Ltd | Optical system of copying machine |
JPS63273080A (en) * | 1987-04-30 | 1988-11-10 | Yokogawa Electric Corp | Transmitter/receiver for ultrasonic range finder |
JPH0463347B2 (en) * | 1987-04-30 | 1992-10-09 | Yokogawa Electric Corp |
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