JPH01303410A - Af camera - Google Patents

Af camera

Info

Publication number
JPH01303410A
JPH01303410A JP13477088A JP13477088A JPH01303410A JP H01303410 A JPH01303410 A JP H01303410A JP 13477088 A JP13477088 A JP 13477088A JP 13477088 A JP13477088 A JP 13477088A JP H01303410 A JPH01303410 A JP H01303410A
Authority
JP
Japan
Prior art keywords
brightness
infrared cut
range
cut filter
camera
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
JP13477088A
Inventor
Yoshitaka Murata
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP13477088A priority Critical patent/JPH01303410A/en
Publication of JPH01303410A publication Critical patent/JPH01303410A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To find a range even if an object has a low brightness by retreating an infrared cut filter when an autofocus system becomes lower than a low brightness limit, and thereby finding a range.
CONSTITUTION: A camera with a passive AF system which uses a photographing element 5 for a range finding sensor 9 as another purpose has a filter operating device retreating the infrared cut filter 3 installed in a camera optical path. When the brightness of an object is at a normal level, the infrared cut filter 3 is positioned in the optical path of the camera, whereas if the brightness is lower than its limit, the filter operating device retreats the infrared cut filter 3 outside the optical path. As a result, even if it is at night or the brightness of an object is low, a range can be found to enable AF photographing.
COPYRIGHT: (C)1989,JPO&Japio
JP13477088A 1988-06-01 1988-06-01 Af camera Pending JPH01303410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13477088A JPH01303410A (en) 1988-06-01 1988-06-01 Af camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13477088A JPH01303410A (en) 1988-06-01 1988-06-01 Af camera

Publications (1)

Publication Number Publication Date
JPH01303410A true JPH01303410A (en) 1989-12-07

Family

ID=15136156

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13477088A Pending JPH01303410A (en) 1988-06-01 1988-06-01 Af camera

Country Status (1)

Country Link
JP (1) JPH01303410A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003075717A (en) * 2001-09-06 2003-03-12 Nikon Corp Distance detecting device
EP1422933A1 (en) * 2001-08-20 2004-05-26 Sony Corporation Still image pickup device and pickup method
JP2006084558A (en) * 2004-09-14 2006-03-30 Fujinon Corp Automatic focusing system
WO2016059712A1 (en) * 2014-10-17 2016-04-21 Necディスプレイソリューションズ株式会社 Display device and display device measurement method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1422933A1 (en) * 2001-08-20 2004-05-26 Sony Corporation Still image pickup device and pickup method
EP1422933A4 (en) * 2001-08-20 2007-03-14 Sony Corp Still image pickup device and pickup method
US7224396B2 (en) 2001-08-20 2007-05-29 Sony Corporation Still image pickup device and pickup method
JP2003075717A (en) * 2001-09-06 2003-03-12 Nikon Corp Distance detecting device
JP2006084558A (en) * 2004-09-14 2006-03-30 Fujinon Corp Automatic focusing system
JP4649686B2 (en) * 2004-09-14 2011-03-16 富士フイルム株式会社 Auto focus system
WO2016059712A1 (en) * 2014-10-17 2016-04-21 Necディスプレイソリューションズ株式会社 Display device and display device measurement method

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