[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

JPS57106828A - Method for measuring visual brightness - Google Patents

Method for measuring visual brightness

Info

Publication number
JPS57106828A
JPS57106828A JP18426880A JP18426880A JPS57106828A JP S57106828 A JPS57106828 A JP S57106828A JP 18426880 A JP18426880 A JP 18426880A JP 18426880 A JP18426880 A JP 18426880A JP S57106828 A JPS57106828 A JP S57106828A
Authority
JP
Japan
Prior art keywords
brightness
amplifier
part computing
visual
discriminating threshold
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.)
Granted
Application number
JP18426880A
Other languages
Japanese (ja)
Other versions
JPS6129641B2 (en
Inventor
Tetsuji Takeuchi
Shigeru Horii
Makoto Inohara
Hideo Nishiyama
Seiji Sumi
Teruaki Shigeta
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP18426880A priority Critical patent/JPS57106828A/en
Publication of JPS57106828A publication Critical patent/JPS57106828A/en
Publication of JPS6129641B2 publication Critical patent/JPS6129641B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

PURPOSE:To measure the visual brightness of a visual object by measuring visual object brightness and equivalent light screen brightness and processing these results. CONSTITUTION:The brightness signal of a visual object from a light receiver 7 is amplified by an amplifier 8, and the brightness signal of an equivalent light screen from a light receiver 11 is amplified by an amplifier 12. The output of the amplifier 12 is sent to a part computing the discriminating threshold of brightness difference 14 through a part computing the discriminating threshold of brightness difference related with the brightness adapting to the central pint 9 and a part computing the discriminating threshold of brightness difference concerning the equivalent light screen brightness 13. A part computing sensitive brightness 15 finds out the visual brightness based on the output of the amplifier 8 and that of the part computing the discriminating threshold of brightness difference 14.
JP18426880A 1980-12-24 1980-12-24 Method for measuring visual brightness Granted JPS57106828A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18426880A JPS57106828A (en) 1980-12-24 1980-12-24 Method for measuring visual brightness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18426880A JPS57106828A (en) 1980-12-24 1980-12-24 Method for measuring visual brightness

Publications (2)

Publication Number Publication Date
JPS57106828A true JPS57106828A (en) 1982-07-02
JPS6129641B2 JPS6129641B2 (en) 1986-07-08

Family

ID=16150339

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18426880A Granted JPS57106828A (en) 1980-12-24 1980-12-24 Method for measuring visual brightness

Country Status (1)

Country Link
JP (1) JPS57106828A (en)

Also Published As

Publication number Publication date
JPS6129641B2 (en) 1986-07-08

Similar Documents

Publication Publication Date Title
GB1525624A (en) Apparatus for measuring the concentration of suspended substances in a flowing liquid
GB829864A (en) Improvements in or relating to automatic dew-point detecting apparatus
JPS57106828A (en) Method for measuring visual brightness
JPS542700A (en) Optical fire detector
JPS57161747A (en) Method and device for selecting decomposition condition
JPS6416014A (en) Waveform shaping circuit
JPS6415031A (en) Blood flowmeter
JPS57153249A (en) Discriminating method for grain quality of unpolished rice
JPS5788443A (en) Original feed device
JPS5764128A (en) Loose parts monitor
JPS5370473A (en) Partial discharge measuring apparatus
JPS5210789A (en) Signal processing circuit of light-scattering type smoke senser
JPS5432925A (en) Signal processing circuit
JPS6446680A (en) Position arithmetic circuit for radiation position detecting device
JPS55125467A (en) Method and device for monitoring feeble radiant ray
JPS5784677A (en) Frequency detecting method for facsimile device
JPS57153228A (en) Measuring apparatus for temperature of atomizing furnace of sample for atom absorptiometry
JPS5739665A (en) Recording paper choke detecting method for facsimile receiver
JPS551037A (en) Image signal processor
JPS5421157A (en) Straight line detection circuit
JPS5327444A (en) Trouble shooting method and device for object detector
JPS5443033A (en) Paper detecting method
JPS5728275A (en) Automatic ri monitor system having self-diagnostic function
JPS56135108A (en) Processing of output signal from detector
JPS531086A (en) Analyzer