JPH0339570B2 - - Google Patents

Info

Publication number
JPH0339570B2
JPH0339570B2 JP10325883A JP10325883A JPH0339570B2 JP H0339570 B2 JPH0339570 B2 JP H0339570B2 JP 10325883 A JP10325883 A JP 10325883A JP 10325883 A JP10325883 A JP 10325883A JP H0339570 B2 JPH0339570 B2 JP H0339570B2
Authority
JP
Japan
Prior art keywords
laser beam
incident
circuit
photodetecting
output
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.)
Expired
Application number
JP10325883A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59228131A (ja
Inventor
Takahito Hiratsuka
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.)
NEC Corp
Original Assignee
Nippon Electric 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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP10325883A priority Critical patent/JPS59228131A/ja
Publication of JPS59228131A publication Critical patent/JPS59228131A/ja
Publication of JPH0339570B2 publication Critical patent/JPH0339570B2/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
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
JP10325883A 1983-06-09 1983-06-09 レ−ザ光警報装置 Granted JPS59228131A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10325883A JPS59228131A (ja) 1983-06-09 1983-06-09 レ−ザ光警報装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10325883A JPS59228131A (ja) 1983-06-09 1983-06-09 レ−ザ光警報装置

Publications (2)

Publication Number Publication Date
JPS59228131A JPS59228131A (ja) 1984-12-21
JPH0339570B2 true JPH0339570B2 (en]) 1991-06-14

Family

ID=14349413

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10325883A Granted JPS59228131A (ja) 1983-06-09 1983-06-09 レ−ザ光警報装置

Country Status (1)

Country Link
JP (1) JPS59228131A (en])

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2734530B2 (ja) * 1988-06-24 1998-03-30 日本電気株式会社 レーザ光入射方向検出装置
CN112665532B (zh) * 2020-12-15 2022-06-21 中北大学 一种基于四象限探测器和二维光栅的高精度激光告警装置

Also Published As

Publication number Publication date
JPS59228131A (ja) 1984-12-21

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