JPS5619419A - Infrared-ray image pickup unit - Google Patents

Infrared-ray image pickup unit

Info

Publication number
JPS5619419A
JPS5619419A JP9530779A JP9530779A JPS5619419A JP S5619419 A JPS5619419 A JP S5619419A JP 9530779 A JP9530779 A JP 9530779A JP 9530779 A JP9530779 A JP 9530779A JP S5619419 A JPS5619419 A JP S5619419A
Authority
JP
Japan
Prior art keywords
video signal
infrared
rotary
reflection coefficient
gain
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
JP9530779A
Other languages
Japanese (ja)
Other versions
JPS617246B2 (en
Inventor
Junichiro Yamashita
Riichi Saeki
Tomomasa Kondo
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP9530779A priority Critical patent/JPS5619419A/en
Publication of JPS5619419A publication Critical patent/JPS5619419A/en
Publication of JPS617246B2 publication Critical patent/JPS617246B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Radiation Pyrometers (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE: To eliminate the brightness irregularity of a picture even when respective reflective surfaces of a rotary polyhedron differ in reflection coefficient by varying the gain of a video signal amplifier in accordance with variation in video signal level that corresponds to an image of a reticle provided in an optical photodetection system.
CONSTITUTION: On the surface of reticle 16 that infrared-ray detector 5 views shortly before incident infrared light 1 strikes infrared-ray detector 5 through the rotation of rotary polyhedron, two mutually parallel slit-shaped patterns that have long size sides at right angles to the scanning direction of rotary polyhedral mirror 3 and are controlled at different temperatures are provided. So that a difference in level between video signals that correspond to those two slit-shaped patterns will be constant without reference to a difference in reflection coefficient among reflective surfaces of rotary polyhedral mirror 3, reflection-coefficient correcting video signal amplifier 17 exercises automatic control over video signal 7, scanning line by scanning line. A picture displayed by video signal 7 for compensating the variance of the reflection coefficient of rotary polyhedron 3 with the variation in gain has no irregularity of brightness.
COPYRIGHT: (C)1981,JPO&Japio
JP9530779A 1979-07-26 1979-07-26 Infrared-ray image pickup unit Granted JPS5619419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9530779A JPS5619419A (en) 1979-07-26 1979-07-26 Infrared-ray image pickup unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9530779A JPS5619419A (en) 1979-07-26 1979-07-26 Infrared-ray image pickup unit

Publications (2)

Publication Number Publication Date
JPS5619419A true JPS5619419A (en) 1981-02-24
JPS617246B2 JPS617246B2 (en) 1986-03-05

Family

ID=14134100

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9530779A Granted JPS5619419A (en) 1979-07-26 1979-07-26 Infrared-ray image pickup unit

Country Status (1)

Country Link
JP (1) JPS5619419A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62178920A (en) * 1986-02-03 1987-08-06 Fuji Photo Film Co Ltd Light beam scanner
JPS6326777A (en) * 1986-07-21 1988-02-04 Nec Corp Pattern recognizing device
JPS6381987U (en) * 1986-11-10 1988-05-30
JPH0617947B2 (en) * 1983-03-24 1994-03-09 ヒューズ・エアクラフト・カンパニー Dual-field sensor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52146680A (en) * 1976-05-31 1977-12-06 Fujitsu Ltd Temperature measurement by infrared rays

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52146680A (en) * 1976-05-31 1977-12-06 Fujitsu Ltd Temperature measurement by infrared rays

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0617947B2 (en) * 1983-03-24 1994-03-09 ヒューズ・エアクラフト・カンパニー Dual-field sensor
JPS62178920A (en) * 1986-02-03 1987-08-06 Fuji Photo Film Co Ltd Light beam scanner
JPS6326777A (en) * 1986-07-21 1988-02-04 Nec Corp Pattern recognizing device
JPS6381987U (en) * 1986-11-10 1988-05-30

Also Published As

Publication number Publication date
JPS617246B2 (en) 1986-03-05

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