JPH027A - Range-finding device for camera - Google Patents

Range-finding device for camera

Info

Publication number
JPH027A
JPH027A JP21689A JP21689A JPH027A JP H027 A JPH027 A JP H027A JP 21689 A JP21689 A JP 21689A JP 21689 A JP21689 A JP 21689A JP H027 A JPH027 A JP H027A
Authority
JP
Japan
Prior art keywords
comparators
reflected light
range
voltages
intensity
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
JP21689A
Other languages
Japanese (ja)
Inventor
Takaaki Kotani
Seiji Takada
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP21689A priority Critical patent/JPH027A/en
Publication of JPH027A publication Critical patent/JPH027A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To accomplish focusing operation on a main object independent of the intensity of reflected light by connecting first and second comparators provided with high and low reference voltages to respective photodetectors and obtaining first and second range-finding signals from the group of the comparators.
CONSTITUTION: The first and the second comparators 31a-35a and 31b-35b provided with the high reference voltages V1a-V5a, the low reference voltages V1b-V5b are connected to the photodetectors S1-S5 which receive reflected light from an object. Signals A1a-A5a and A1b-A5b which respond to the intensity of the reflected light of the object are outputted from the groups of the comparators. Either lens setting position is selected depending on whether or not difference between first and second lens setting positions which are obtained in response to the first and second range-finding signals satisfies a specified condition. Therefore, focusing on the main object can be performed with high probability even if there is a level difference in the intensity of the reflected light.
COPYRIGHT: (C)1990,JPO&Japio
JP21689A 1989-01-04 1989-01-04 Range-finding device for camera Pending JPH027A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21689A JPH027A (en) 1989-01-04 1989-01-04 Range-finding device for camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21689A JPH027A (en) 1989-01-04 1989-01-04 Range-finding device for camera

Publications (1)

Publication Number Publication Date
JPH027A true JPH027A (en) 1990-01-05

Family

ID=11467766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21689A Pending JPH027A (en) 1989-01-04 1989-01-04 Range-finding device for camera

Country Status (1)

Country Link
JP (1) JPH027A (en)

Cited By (25)

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Publication number Priority date Publication date Assignee Title
US5403520A (en) * 1990-09-25 1995-04-04 Ube Industries, Ltd. Nonlinear optical device and optical signal processing unit
US6308372B1 (en) 1998-07-23 2001-10-30 Mitsuba Corporation Mounting structure of wiper apparatus
US6347987B1 (en) 1998-11-25 2002-02-19 Denso Corporation Vehicle air conditioner with louver operation control
JP2007121083A (en) * 2005-10-27 2007-05-17 Nidec Copal Corp Distance measurement apparatus
KR100848602B1 (en) * 2007-02-28 2008-07-28 인하대학교 산학협력단 Method for mass production of recombinant protein in transgenic plants under anoxic condition for long term
KR100858091B1 (en) * 2007-04-24 2008-09-10 삼성전자주식회사 Centrifugal force-based microfluidic device having sample distribution structure and microfluidic system including the microfluidic device
KR100859096B1 (en) * 2007-03-08 2008-09-17 주식회사한국야쿠르트 Aceriphyllum rossii Engler composition as a ?-secretase inhibitor
KR100869933B1 (en) * 2007-03-15 2008-11-24 재단법인서울대학교산학협력재단 Supplementation of kinetin for mammalian preimplantation embryo development
KR100872586B1 (en) * 2008-07-08 2008-12-08 부산대학교 산학협력단 Advanced wastewater treatment apparatus applied spent sulfidic caustic
KR100882924B1 (en) * 2007-12-07 2009-02-10 한국과학기술연구원 Ti3alc2 composite materials with high strength and manufacturing process of the same
KR100883958B1 (en) * 2007-06-29 2009-02-18 (주)대진코스탈 Safety paper shredder
WO2009041542A1 (en) 2007-09-28 2009-04-02 Kyocera Corporation Radio communication device, and reception quality estimating method
WO2009044529A1 (en) 2007-10-05 2009-04-09 Nec Electronics Corporation Method for producing hydrophobilized porous film
KR100903609B1 (en) * 2002-09-23 2009-06-18 삼성에스디아이 주식회사 Circuit for power controlling Ringing Chock Converter
WO2009098872A1 (en) 2008-02-04 2009-08-13 Daikin Industries, Ltd. Fluid machine
US7579937B2 (en) 2007-11-07 2009-08-25 Tdk Corporation Laminated inductor and method of manufacture of same
WO2009139231A1 (en) 2008-05-16 2009-11-19 株式会社ニチレイバイオサイエンス Extract produced from orchid family plant, method for production thereof, and preparation for external application to skin comprising extract produced from orchid family plant
WO2010067898A2 (en) 2008-12-12 2010-06-17 Fujifilm Corporation Actinic ray-sensitive or radiation-sensitive resin composition and pattern forming method using the composition
WO2010110166A1 (en) 2009-03-25 2010-09-30 ダイキン工業株式会社 Non-fouling ordinary-temperature-curable coating composition
WO2010123028A1 (en) 2009-04-22 2010-10-28 アルファ工業株式会社 Conductive metallic coating material, method of corrosion prevention with conductive metallic coating material, and method of corrosion-preventive repair therewith
EP2423748A1 (en) 2010-08-31 2012-02-29 Fujifilm Corporation Lithographic printing plate precursor and plate making method thereof
KR20120047108A (en) * 2010-11-03 2012-05-11 현대모비스 주식회사 Control method for power streering handle system
US20120201759A1 (en) * 2011-02-03 2012-08-09 Massachusetts Institute Of Technology Tunable multiscale structures comprising bristly, hollow metal/metal oxide particles, methods of making and articles incorporating the structures
WO2012147559A1 (en) 2011-04-28 2012-11-01 国立大学法人東北大学 Metallic glass nanowire manufacturing method, metallic glass nanowire manufactured thereby, and catalyst containing metallic glass nanowire
US20160376937A1 (en) * 2015-03-10 2016-12-29 GT Technologies Rocker arm assembly and method of forming retention elements in a rocker arm

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5403520A (en) * 1990-09-25 1995-04-04 Ube Industries, Ltd. Nonlinear optical device and optical signal processing unit
US6308372B1 (en) 1998-07-23 2001-10-30 Mitsuba Corporation Mounting structure of wiper apparatus
US6347987B1 (en) 1998-11-25 2002-02-19 Denso Corporation Vehicle air conditioner with louver operation control
KR100903609B1 (en) * 2002-09-23 2009-06-18 삼성에스디아이 주식회사 Circuit for power controlling Ringing Chock Converter
JP2007121083A (en) * 2005-10-27 2007-05-17 Nidec Copal Corp Distance measurement apparatus
KR100848602B1 (en) * 2007-02-28 2008-07-28 인하대학교 산학협력단 Method for mass production of recombinant protein in transgenic plants under anoxic condition for long term
KR100859096B1 (en) * 2007-03-08 2008-09-17 주식회사한국야쿠르트 Aceriphyllum rossii Engler composition as a ?-secretase inhibitor
KR100869933B1 (en) * 2007-03-15 2008-11-24 재단법인서울대학교산학협력재단 Supplementation of kinetin for mammalian preimplantation embryo development
KR100858091B1 (en) * 2007-04-24 2008-09-10 삼성전자주식회사 Centrifugal force-based microfluidic device having sample distribution structure and microfluidic system including the microfluidic device
KR100883958B1 (en) * 2007-06-29 2009-02-18 (주)대진코스탈 Safety paper shredder
WO2009041542A1 (en) 2007-09-28 2009-04-02 Kyocera Corporation Radio communication device, and reception quality estimating method
WO2009044529A1 (en) 2007-10-05 2009-04-09 Nec Electronics Corporation Method for producing hydrophobilized porous film
US7579937B2 (en) 2007-11-07 2009-08-25 Tdk Corporation Laminated inductor and method of manufacture of same
KR100882924B1 (en) * 2007-12-07 2009-02-10 한국과학기술연구원 Ti3alc2 composite materials with high strength and manufacturing process of the same
WO2009098872A1 (en) 2008-02-04 2009-08-13 Daikin Industries, Ltd. Fluid machine
WO2009139231A1 (en) 2008-05-16 2009-11-19 株式会社ニチレイバイオサイエンス Extract produced from orchid family plant, method for production thereof, and preparation for external application to skin comprising extract produced from orchid family plant
KR100872586B1 (en) * 2008-07-08 2008-12-08 부산대학교 산학협력단 Advanced wastewater treatment apparatus applied spent sulfidic caustic
WO2010067898A2 (en) 2008-12-12 2010-06-17 Fujifilm Corporation Actinic ray-sensitive or radiation-sensitive resin composition and pattern forming method using the composition
WO2010110166A1 (en) 2009-03-25 2010-09-30 ダイキン工業株式会社 Non-fouling ordinary-temperature-curable coating composition
WO2010123028A1 (en) 2009-04-22 2010-10-28 アルファ工業株式会社 Conductive metallic coating material, method of corrosion prevention with conductive metallic coating material, and method of corrosion-preventive repair therewith
EP2423748A1 (en) 2010-08-31 2012-02-29 Fujifilm Corporation Lithographic printing plate precursor and plate making method thereof
KR20120047108A (en) * 2010-11-03 2012-05-11 현대모비스 주식회사 Control method for power streering handle system
US20120201759A1 (en) * 2011-02-03 2012-08-09 Massachusetts Institute Of Technology Tunable multiscale structures comprising bristly, hollow metal/metal oxide particles, methods of making and articles incorporating the structures
WO2012147559A1 (en) 2011-04-28 2012-11-01 国立大学法人東北大学 Metallic glass nanowire manufacturing method, metallic glass nanowire manufactured thereby, and catalyst containing metallic glass nanowire
US20160376937A1 (en) * 2015-03-10 2016-12-29 GT Technologies Rocker arm assembly and method of forming retention elements in a rocker arm

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