JPS55106430A - Automatic focusing camera - Google Patents

Automatic focusing camera

Info

Publication number
JPS55106430A
JPS55106430A JP1408879A JP1408879A JPS55106430A JP S55106430 A JPS55106430 A JP S55106430A JP 1408879 A JP1408879 A JP 1408879A JP 1408879 A JP1408879 A JP 1408879A JP S55106430 A JPS55106430 A JP S55106430A
Authority
JP
Japan
Prior art keywords
focusing
reflecting mirrors
optical axis
mirror frame
detection
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
JP1408879A
Other languages
Japanese (ja)
Inventor
Hirobumi Horigome
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP1408879A priority Critical patent/JPS55106430A/en
Publication of JPS55106430A publication Critical patent/JPS55106430A/en
Pending legal-status Critical Current

Links

Landscapes

  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE: To detect focusing with high accuracy by leading the incident light passing through the peripheral two regions of an objective lens to a pair of reflecting mirrors provided symmetrically to optical axis and placing a focusing detecting element on optical path.
CONSTITUTION: Reflecting mirrors 10, 10 are formed to one end of a ring-form mirror frame 11 which is rotatable about the optical axis 2 of a lens and are provided symmetrically with respect to the optical axis 2. A focusing detecting element 16 is disposed on the reflecting optical path of the reflecting mirrors 10, by which the detection of focusing is accomplished. At the time other than the focusing detection, the mirror frame 11 is turned to put the reflecting mirrors 10, 10 to outside 15 the effective image plane region, then the incident light path to the finder optical system and film is not hampered at all. Hence, such an inconvenience as darkening of the finder does no longer occur and since the reflecting mirrors are held fixed to the mirror frame, the focusing detection may be accomplished with high accuracy.
COPYRIGHT: (C)1980,JPO&Japio
JP1408879A 1979-02-09 1979-02-09 Automatic focusing camera Pending JPS55106430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1408879A JPS55106430A (en) 1979-02-09 1979-02-09 Automatic focusing camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1408879A JPS55106430A (en) 1979-02-09 1979-02-09 Automatic focusing camera

Publications (1)

Publication Number Publication Date
JPS55106430A true JPS55106430A (en) 1980-08-15

Family

ID=11851345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1408879A Pending JPS55106430A (en) 1979-02-09 1979-02-09 Automatic focusing camera

Country Status (1)

Country Link
JP (1) JPS55106430A (en)

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