JPS5515112A - Focus matching device of reflex camera - Google Patents

Focus matching device of reflex camera

Info

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
Application number
JP8655478A
Other languages
Japanese (ja)
Inventor
Takao Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP8655478A priority Critical patent/JPS5515112A/en
Publication of JPS5515112A publication Critical patent/JPS5515112A/en
Pending legal-status Critical Current

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
JP8655478A 1978-07-15 1978-07-15 Focus matching device of reflex camera Pending JPS5515112A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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