JPS54140581A - Display device for brightness distribution - Google Patents

Display device for brightness distribution

Info

Publication number
JPS54140581A
JPS54140581A JP4817578A JP4817578A JPS54140581A JP S54140581 A JPS54140581 A JP S54140581A JP 4817578 A JP4817578 A JP 4817578A JP 4817578 A JP4817578 A JP 4817578A JP S54140581 A JPS54140581 A JP S54140581A
Authority
JP
Japan
Prior art keywords
fed
brightness distribution
signals
output signals
circuit
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
JP4817578A
Other languages
Japanese (ja)
Inventor
Toshitaka Hirata
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 JP4817578A priority Critical patent/JPS54140581A/en
Publication of JPS54140581A publication Critical patent/JPS54140581A/en
Pending 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
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors

Landscapes

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

Abstract

PURPOSE:To make it possible to know visually easily the brightness distribution condition with the use of a simple construction by feeding the electric signals according to the optical intensity to the vertical axis of an oscilloscope which is operative to accomplish the horizontal sweep in synchronism with the horizontal scanning. CONSTITUTION:A preset time delay is imparted by a delay circuit 2 to the output signals of a photoelectric converting device 1 for generating the electric signals according to the optical intensity of a portion corresponding to the object to be measured. The output signals from the delay circuit 2 are amplified by an amplifier 4 and then fed as the signals, which are to be fed to the vertical axis of an oscilloscope, out of a terminal Tv. The output signals of the circuit 2 are also fed to a peak value memory circuit 5 and level detectors 6 and 7. The step waveform signals having their voltage levels raised for each horizontal scanning period are fed from a control signal generator 3 to the converter 1 and the amplifier 4 so that the vertical scanning operation is performed. Thus, the condition of the brightness distribution of the light emitting body can be judged visually easily.
JP4817578A 1978-04-23 1978-04-23 Display device for brightness distribution Pending JPS54140581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4817578A JPS54140581A (en) 1978-04-23 1978-04-23 Display device for brightness distribution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4817578A JPS54140581A (en) 1978-04-23 1978-04-23 Display device for brightness distribution

Publications (1)

Publication Number Publication Date
JPS54140581A true JPS54140581A (en) 1979-10-31

Family

ID=12796043

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4817578A Pending JPS54140581A (en) 1978-04-23 1978-04-23 Display device for brightness distribution

Country Status (1)

Country Link
JP (1) JPS54140581A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5499304A (en) * 1990-10-02 1996-03-12 Delco Electronics Corporation Light mask

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5499304A (en) * 1990-10-02 1996-03-12 Delco Electronics Corporation Light mask

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