JPS55106431A - Automatic focusing camera - Google Patents

Automatic focusing camera

Info

Publication number
JPS55106431A
JPS55106431A JP1408979A JP1408979A JPS55106431A JP S55106431 A JPS55106431 A JP S55106431A JP 1408979 A JP1408979 A JP 1408979A JP 1408979 A JP1408979 A JP 1408979A JP S55106431 A JPS55106431 A JP S55106431A
Authority
JP
Japan
Prior art keywords
focusing
objective lens
detecting element
lens
reflected light
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
JP1408979A
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 JP1408979A priority Critical patent/JPS55106431A/en
Publication of JPS55106431A publication Critical patent/JPS55106431A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To detect the focusing of the automatic focusing camera with high accuracy by leading the incident light passing through the peripheral two regions of an objective lens to a pair of reflecting mirrors right after the objective lens and placing a focusing detecting element in the reflected light converging position.
CONSTITUTION: A pair of mirrors 10 are provided behind an objective lens 1, in the laterally symmetrical positions, with the optical axis 2 of said lens as an axis, to reflect the incident light l passing through the peripheral parts of the objective lens 1. A focusing detecting element 11 is disposed in the position where the reflected light l' converges. Since whether focusing or non-focusing is detected in the single place without the formation of images separately on the right and left by the lens peripheral light, the constitution may be simplified without installing the focusing detecting element separately in two positions. Further the focusing is detected by the reflected light from the mirrors 10, hence the entry of optical noise in the detecting rays may be obviated and the accuracy of detection enhanced.
COPYRIGHT: (C)1980,JPO&Japio
JP1408979A 1979-02-09 1979-02-09 Automatic focusing camera Pending JPS55106431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1408979A JPS55106431A (en) 1979-02-09 1979-02-09 Automatic focusing camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1408979A JPS55106431A (en) 1979-02-09 1979-02-09 Automatic focusing camera

Publications (1)

Publication Number Publication Date
JPS55106431A true JPS55106431A (en) 1980-08-15

Family

ID=11851374

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1408979A Pending JPS55106431A (en) 1979-02-09 1979-02-09 Automatic focusing camera

Country Status (1)

Country Link
JP (1) JPS55106431A (en)

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