JPS5782815A - Optical beam scanner - Google Patents

Optical beam scanner

Info

Publication number
JPS5782815A
JPS5782815A JP55159332A JP15933280A JPS5782815A JP S5782815 A JPS5782815 A JP S5782815A JP 55159332 A JP55159332 A JP 55159332A JP 15933280 A JP15933280 A JP 15933280A JP S5782815 A JPS5782815 A JP S5782815A
Authority
JP
Japan
Prior art keywords
flux
made incident
plate
diffraction grating
focusing
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
JP55159332A
Other languages
Japanese (ja)
Inventor
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 JP55159332A priority Critical patent/JPS5782815A/en
Priority to US06/318,340 priority patent/US4470659A/en
Publication of JPS5782815A publication Critical patent/JPS5782815A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/10—Scanning systems
    • G02B26/106—Scanning systems having diffraction gratings as scanning elements, e.g. holographic scanners

Abstract

PURPOSE:To simplify the constitution of an optical beam scanner, by turning in an even speed a diffraction grating plate that is formed by distributing plural diffraction gratings on a circumference of a circle equidistantly and in the same way and diffracting the focusing laser beam flux made incident to the diffraction grating to lead the beam flux to a concave mirror for reflection. CONSTITUTION:A parallel laser beam flux 9 is made incident to a focusing lens 8 from the direction vertical to a diffraction grating plate 7 to be turned into a focusing light flux 91. This flux 91 transmits through the plate 7 and is made incident to one of the diffraction gratings G1-G6 provided at the position of the plate 7. The flux 91 is separated into a straight going O-order light flux 92 and a diffraction light flux 93. The flux 93 is focused at a point P and then turned into a scattering laser light flux 94 to be made incident to a concave mirror 5. The point P shifts on the 1/6 arc of the circumference of a circle every time the plate 7 turns in an even speed and the diffraction grating to which the flux 91 is made incident is exchanged. After this, a scattering laser beam 94 is obtained and reflected on the mirror 5 to be turned into a focusing scanning beam 95. This beam 95 is focused on a scanning surface 6 to be scanned.
JP55159332A 1980-11-10 1980-11-12 Optical beam scanner Pending JPS5782815A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP55159332A JPS5782815A (en) 1980-11-12 1980-11-12 Optical beam scanner
US06/318,340 US4470659A (en) 1980-11-10 1981-11-05 Light beam scanning apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55159332A JPS5782815A (en) 1980-11-12 1980-11-12 Optical beam scanner

Publications (1)

Publication Number Publication Date
JPS5782815A true JPS5782815A (en) 1982-05-24

Family

ID=15691502

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55159332A Pending JPS5782815A (en) 1980-11-10 1980-11-12 Optical beam scanner

Country Status (1)

Country Link
JP (1) JPS5782815A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5964814A (en) * 1982-10-05 1984-04-12 Ricoh Co Ltd Production for hologram in hologram scanner
JPS61242161A (en) * 1985-04-18 1986-10-28 Fuji Xerox Co Ltd Scanning optical device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5964814A (en) * 1982-10-05 1984-04-12 Ricoh Co Ltd Production for hologram in hologram scanner
JPS61242161A (en) * 1985-04-18 1986-10-28 Fuji Xerox Co Ltd Scanning optical device

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