JPS5766416A - Photoscanning system using linear polarizing laser - Google Patents

Photoscanning system using linear polarizing laser

Info

Publication number
JPS5766416A
JPS5766416A JP55142258A JP14225880A JPS5766416A JP S5766416 A JPS5766416 A JP S5766416A JP 55142258 A JP55142258 A JP 55142258A JP 14225880 A JP14225880 A JP 14225880A JP S5766416 A JPS5766416 A JP S5766416A
Authority
JP
Japan
Prior art keywords
polarized light
axis
polygon mirror
rotary polygon
reflectivity
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
JP55142258A
Other languages
Japanese (ja)
Other versions
JPS6120848B2 (en
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 JP55142258A priority Critical patent/JPS5766416A/en
Publication of JPS5766416A publication Critical patent/JPS5766416A/en
Publication of JPS6120848B2 publication Critical patent/JPS6120848B2/ja
Granted 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
    • G02B26/12—Scanning systems using multifaceted mirrors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE:To prevent a shading phenomenon by minimizing variations in the reflectivity of a reflecting mirror accompanying variations in angle of incidence, by setting the polarization oscillation direction of a linear polarizing laser approximately at 45 deg. to the rotary axis of a rotary polygon mirror. CONSTITUTION:With regard to S-polarized light oscillating in a plane parallel to the axis of rotation of a rotary polygon mirror (b) and P-polarized light oscillating in a plane perpendicular to the axis of rotation, the reflectivity of the rotary polygon mirror having a protective film of an SiO on a vapor-deposited surface of Al increases or decreases as the angle of incidence of linear polarized laser light from a gas laser tube (a) in a polarization oscillation direction increases. The reflectivity of the rotary polygon mirror (b) to (p+s)-polarized light oscillating in a plane with 45 deg. to the axis of rotation, however, has a constant value, without reference to the angle of incidence, which is the intermediate value of the S-polarized light and P- polarized light.
JP55142258A 1980-10-09 1980-10-09 Photoscanning system using linear polarizing laser Granted JPS5766416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55142258A JPS5766416A (en) 1980-10-09 1980-10-09 Photoscanning system using linear polarizing laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55142258A JPS5766416A (en) 1980-10-09 1980-10-09 Photoscanning system using linear polarizing laser

Publications (2)

Publication Number Publication Date
JPS5766416A true JPS5766416A (en) 1982-04-22
JPS6120848B2 JPS6120848B2 (en) 1986-05-24

Family

ID=15311136

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55142258A Granted JPS5766416A (en) 1980-10-09 1980-10-09 Photoscanning system using linear polarizing laser

Country Status (1)

Country Link
JP (1) JPS5766416A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6016058A (en) * 1983-07-08 1985-01-26 Hitachi Ltd Optical beam scanning device
JPH03139672A (en) * 1989-10-13 1991-06-13 Xerox Corp Multibeam exposure controller
JPH03144519A (en) * 1989-10-13 1991-06-19 Xerox Corp Multiple beam optical modulator
EP1715674A3 (en) * 2005-04-21 2008-11-19 Seiko Epson Corporation Image forming apparatus
JP2012242477A (en) * 2011-05-17 2012-12-10 Nikon Corp Spatial light modulator, exposure apparatus and device manufacturing method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6016058A (en) * 1983-07-08 1985-01-26 Hitachi Ltd Optical beam scanning device
JPH0475702B2 (en) * 1983-07-08 1992-12-01 Hitachi Ltd
JPH03139672A (en) * 1989-10-13 1991-06-13 Xerox Corp Multibeam exposure controller
JPH03144519A (en) * 1989-10-13 1991-06-19 Xerox Corp Multiple beam optical modulator
EP1715674A3 (en) * 2005-04-21 2008-11-19 Seiko Epson Corporation Image forming apparatus
US7787003B2 (en) 2005-04-21 2010-08-31 Seiko Epson Corporation Image forming apparatus
JP2012242477A (en) * 2011-05-17 2012-12-10 Nikon Corp Spatial light modulator, exposure apparatus and device manufacturing method

Also Published As

Publication number Publication date
JPS6120848B2 (en) 1986-05-24

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