JPS5444553A - Optical scanner - Google Patents

Optical scanner

Info

Publication number
JPS5444553A
JPS5444553A JP11127477A JP11127477A JPS5444553A JP S5444553 A JPS5444553 A JP S5444553A JP 11127477 A JP11127477 A JP 11127477A JP 11127477 A JP11127477 A JP 11127477A JP S5444553 A JPS5444553 A JP S5444553A
Authority
JP
Japan
Prior art keywords
light source
image
focusing
semiconductor laser
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
JP11127477A
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 JP11127477A priority Critical patent/JPS5444553A/en
Publication of JPS5444553A publication Critical patent/JPS5444553A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE: To form the shape of a laser spot to a desired shape and perform uniform optical scanning by using a semiconductor laser as a light source and providing a periodical deflecting means and an image-forming optical system as well as a focusing optical system for focusing on scanning plane.
CONSTITUTION: A semiconductor laser is used as a laser light source 1. Its light is passed through an image-forming lens 2, is deflected 4 by a galvanomirror or rotary polyhedral mirror and is focused on a scanning plane 5 by means of a focusing lens system 3. Here, the P-N junction face 11A of the semiconductor laser 1 is disposed perpendicularly to the rotating axis or oscillating axis of the deflecting mirror face 4 to increase spreading in the axial direction and decrease the same in the direction perpendicular to this. Next, the mirror face 4 is so disposed that its ideal position with respect to deflection becomes mutually conjugate with the light source 1 with respect to the image-forming lens 2 to let the image formed on the mirror face 4 function as the new light source of the focusing lens system 3. Further the power of the focusing lens system 3 is made different in the direction of the scanning line and the perpendicular direction, therby the laser spot on the scanning plane may be focused to a desired shape.
COPYRIGHT: (C)1979,JPO&Japio
JP11127477A 1977-09-16 1977-09-16 Optical scanner Pending JPS5444553A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11127477A JPS5444553A (en) 1977-09-16 1977-09-16 Optical scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11127477A JPS5444553A (en) 1977-09-16 1977-09-16 Optical scanner

Publications (1)

Publication Number Publication Date
JPS5444553A true JPS5444553A (en) 1979-04-09

Family

ID=14557055

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11127477A Pending JPS5444553A (en) 1977-09-16 1977-09-16 Optical scanner

Country Status (1)

Country Link
JP (1) JPS5444553A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5852614A (en) * 1981-09-24 1983-03-28 Minolta Camera Co Ltd Semiconductor laser scanning device
US4530574A (en) * 1982-07-28 1985-07-23 Xerox Corporation Beam collimation and focusing of multi-emitter or broad emitter lasers
WO2007000973A1 (en) * 2005-06-28 2007-01-04 Nidec Sankyo Corporation Optical beam scanner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5852614A (en) * 1981-09-24 1983-03-28 Minolta Camera Co Ltd Semiconductor laser scanning device
US4530574A (en) * 1982-07-28 1985-07-23 Xerox Corporation Beam collimation and focusing of multi-emitter or broad emitter lasers
WO2007000973A1 (en) * 2005-06-28 2007-01-04 Nidec Sankyo Corporation Optical beam scanner
JP2007010804A (en) * 2005-06-28 2007-01-18 Nidec Sankyo Corp Light beam scanner

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