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JPS56123521A - Optical scanner - Google Patents

Optical scanner

Info

Publication number
JPS56123521A
JPS56123521A JP2755780A JP2755780A JPS56123521A JP S56123521 A JPS56123521 A JP S56123521A JP 2755780 A JP2755780 A JP 2755780A JP 2755780 A JP2755780 A JP 2755780A JP S56123521 A JPS56123521 A JP S56123521A
Authority
JP
Japan
Prior art keywords
light
diffracted light
zero
output
gas laser
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
JP2755780A
Other languages
Japanese (ja)
Inventor
Isamu Shibata
Hiroyoshi Funato
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 JP2755780A priority Critical patent/JPS56123521A/en
Publication of JPS56123521A publication Critical patent/JPS56123521A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/33—Acousto-optical deflection devices

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)

Abstract

PURPOSE:To obtain the image recording always stable, by detecting the output of acousto-optical modulator which superimposes the image information given externally on the output light of a gas laser and controlling the feedback control of the gas laser driving circuit so that the output can always be constant. CONSTITUTION:Since the zero-order diffracted light of an acousto-optical modulator 5 is proportional to the amount of light of the primary diffracted light actually used for the write-in light, the driving control of a gas laser 1 is made with a peak voltage according to the amount of light of the zero-order diffracted light detected and stored in the peak holding circuit 13. Thus, the light for write-in can always be constantly stored. Further, by also detecting the zero-order diffracted light of the modulator 5 with the photodetector 11, the recording of image can be made without giving any hindrance to the optical path of the primary diffracted light.
JP2755780A 1980-03-05 1980-03-05 Optical scanner Pending JPS56123521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2755780A JPS56123521A (en) 1980-03-05 1980-03-05 Optical scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2755780A JPS56123521A (en) 1980-03-05 1980-03-05 Optical scanner

Publications (1)

Publication Number Publication Date
JPS56123521A true JPS56123521A (en) 1981-09-28

Family

ID=12224348

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2755780A Pending JPS56123521A (en) 1980-03-05 1980-03-05 Optical scanner

Country Status (1)

Country Link
JP (1) JPS56123521A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61502424A (en) * 1984-06-11 1986-10-23 イ−ストマン　コダック　カンパニ− Laser beam intensity control device
WO2003029882A3 (en) * 2001-10-04 2004-02-26 Commissariat Energie Atomique Method and device for sampling part of a light beam, particularly for a fluorescence analysis apparatus
WO2018066338A1 (en) * 2016-10-05 2018-04-12 株式会社ニコン Pattern drawing apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61502424A (en) * 1984-06-11 1986-10-23 イ−ストマン　コダック　カンパニ− Laser beam intensity control device
WO2003029882A3 (en) * 2001-10-04 2004-02-26 Commissariat Energie Atomique Method and device for sampling part of a light beam, particularly for a fluorescence analysis apparatus
WO2018066338A1 (en) * 2016-10-05 2018-04-12 株式会社ニコン Pattern drawing apparatus
KR20190056439A (en) * 2016-10-05 2019-05-24 가부시키가이샤 니콘 Patterning device
JPWO2018066338A1 (en) * 2016-10-05 2019-08-15 株式会社ニコン Pattern drawing device

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