JPS5739320A - Pulse light detector - Google Patents

Pulse light detector

Info

Publication number
JPS5739320A
JPS5739320A JP11546480A JP11546480A JPS5739320A JP S5739320 A JPS5739320 A JP S5739320A JP 11546480 A JP11546480 A JP 11546480A JP 11546480 A JP11546480 A JP 11546480A JP S5739320 A JPS5739320 A JP S5739320A
Authority
JP
Japan
Prior art keywords
amplifier
pulse light
diode
light
photodetecting
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
JP11546480A
Other languages
Japanese (ja)
Inventor
Masahiko Konagaya
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.)
Konan Camera Research Institue Inc
Original Assignee
Konan Camera Research Institue 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 Konan Camera Research Institue Inc filed Critical Konan Camera Research Institue Inc
Priority to JP11546480A priority Critical patent/JPS5739320A/en
Publication of JPS5739320A publication Critical patent/JPS5739320A/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
    • G01J1/44—Electric circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Electrochemical Coating By Surface Reaction (AREA)

Abstract

PURPOSE:To form a circuit which detects only the pulse light by connecting two pieces of photodetecting diodes to the input terminal of an amplifier having a feedback circuit in parallel to reversed polarities and connecting an inductance element in series to one of them. CONSTITUTION:A photodetecting diode 5 connected with an inductance 7 in series, and a photodetecting diode 4 which is equal in characteristics to said diode and is reversed in polarity are connected to the input terminal of an amplifier 6 having a feedback impedance 8. The input part of the amplifier 6 is equivalent to the composite of (a) and (b) of the figure, wherein the (a) is an ordinary amplifier, and the (b) operates integrally, and amplifies only the DC or low-frequency light and since it is of a direction reverse to the (a), it amplifies only the high-frequency pulse light superposedly. Only when the output of the amplifier 6 exceeds the Ec having set arbitrarily by a comparator, it sets a flip-flop 11, and a coil 14 is energized by the output of an amplifier 13. Thereby, a reset switch 12, a trigger switch 2 and a movement mechanism for a lens 15 are interlocked, and suitable quantity of light is obtained from a strobe 1 of a small size camera.
JP11546480A 1980-08-21 1980-08-21 Pulse light detector Pending JPS5739320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11546480A JPS5739320A (en) 1980-08-21 1980-08-21 Pulse light detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11546480A JPS5739320A (en) 1980-08-21 1980-08-21 Pulse light detector

Publications (1)

Publication Number Publication Date
JPS5739320A true JPS5739320A (en) 1982-03-04

Family

ID=14663181

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11546480A Pending JPS5739320A (en) 1980-08-21 1980-08-21 Pulse light detector

Country Status (1)

Country Link
JP (1) JPS5739320A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0310319U (en) * 1989-06-09 1991-01-31

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0310319U (en) * 1989-06-09 1991-01-31

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