JPS54134623A - Photograhic apparatus - Google Patents

Photograhic apparatus

Info

Publication number
JPS54134623A
JPS54134623A JP4207678A JP4207678A JPS54134623A JP S54134623 A JPS54134623 A JP S54134623A JP 4207678 A JP4207678 A JP 4207678A JP 4207678 A JP4207678 A JP 4207678A JP S54134623 A JPS54134623 A JP S54134623A
Authority
JP
Japan
Prior art keywords
plane
lens
curtain
shutter
mirror
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.)
Granted
Application number
JP4207678A
Other languages
Japanese (ja)
Other versions
JPS6057055B2 (en
Inventor
Toshihiro Imai
Takeaki 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.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP53042076A priority Critical patent/JPS6057055B2/en
Publication of JPS54134623A publication Critical patent/JPS54134623A/en
Publication of JPS6057055B2 publication Critical patent/JPS6057055B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Exposure Control For Cameras (AREA)

Abstract

PURPOSE: To detect the focal point of the photographic lens in the curtain plane with high accuracy and achieve the simplification of the apparatus and the miniaturization of the apparatus by directing the reflected light from the curtain plane of the focal plane shutter to a photo detector through imaging lens.
CONSTITUTION: The luminous flux from a photographic lens 1 is led to the front curtain plane of a focal plane shutter 4 through the half mirror 3 in the central part of a quick return mirror 2 and the light reflected by this curtain plane is imaged on a photo detector 7 through an imaging lens 6. Before the mirror 2 springs up, the lens 1 is automatically moved in the direction of the film 5 from the position furthest from the film 5. This movement is performed by way of a focal point detecting part 8, a motor drive part 9, and a motor 10. Thereby, the focus position on the front curtain plane of the shutter 4 is automatically detected and therefore, the focusing is obtained simply by moving the lens 1 by a minute distance l to the curtain 5 side.
COPYRIGHT: (C)1979,JPO&Japio
JP53042076A 1978-04-12 1978-04-12 Photography equipment Expired JPS6057055B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53042076A JPS6057055B2 (en) 1978-04-12 1978-04-12 Photography equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53042076A JPS6057055B2 (en) 1978-04-12 1978-04-12 Photography equipment

Publications (2)

Publication Number Publication Date
JPS54134623A true JPS54134623A (en) 1979-10-19
JPS6057055B2 JPS6057055B2 (en) 1985-12-13

Family

ID=12625961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53042076A Expired JPS6057055B2 (en) 1978-04-12 1978-04-12 Photography equipment

Country Status (1)

Country Link
JP (1) JPS6057055B2 (en)

Also Published As

Publication number Publication date
JPS6057055B2 (en) 1985-12-13

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