JPS5687023A - Automatic focus detector - Google Patents

Automatic focus detector

Info

Publication number
JPS5687023A
JPS5687023A JP16453679A JP16453679A JPS5687023A JP S5687023 A JPS5687023 A JP S5687023A JP 16453679 A JP16453679 A JP 16453679A JP 16453679 A JP16453679 A JP 16453679A JP S5687023 A JPS5687023 A JP S5687023A
Authority
JP
Japan
Prior art keywords
subject
low
luminance
focusing
detector
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
JP16453679A
Other languages
Japanese (ja)
Inventor
Yukio Nakajima
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 JP16453679A priority Critical patent/JPS5687023A/en
Publication of JPS5687023A publication Critical patent/JPS5687023A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To enable focusing to be detected surely even when the luminance of a subject is low and even at the time of low contrast by irradiating light from a light emitting element to the subject so that part of the subject corresponding to the image of the subject formed on a photodetector is irradiated.
CONSTITUTION: A light emitting element 36 is provided on the camera bottom plate near the place where a detector 28 for focusing is provided, and the light 46 from the element 36 is slenderly patterned by a slip 40 and is irrdiated onto a subject via a focusdetecting mirror 26, a movable mirror 14 and a photographic lens 10. Since this irradiation position is so as set to intersect with the focus detecting part of the subject projected to the detector 28, it turns out that the luminance increases in this part only, thus even when the luminance of the subject is low and even when the contrast of the subject is low, the focusing detection may be accomplished surely.
COPYRIGHT: (C)1981,JPO&Japio
JP16453679A 1979-12-18 1979-12-18 Automatic focus detector Pending JPS5687023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16453679A JPS5687023A (en) 1979-12-18 1979-12-18 Automatic focus detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16453679A JPS5687023A (en) 1979-12-18 1979-12-18 Automatic focus detector

Publications (1)

Publication Number Publication Date
JPS5687023A true JPS5687023A (en) 1981-07-15

Family

ID=15795014

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16453679A Pending JPS5687023A (en) 1979-12-18 1979-12-18 Automatic focus detector

Country Status (1)

Country Link
JP (1) JPS5687023A (en)

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