JPS5735824A - Light beam scanner - Google Patents

Light beam scanner

Info

Publication number
JPS5735824A
JPS5735824A JP11217980A JP11217980A JPS5735824A JP S5735824 A JPS5735824 A JP S5735824A JP 11217980 A JP11217980 A JP 11217980A JP 11217980 A JP11217980 A JP 11217980A JP S5735824 A JPS5735824 A JP S5735824A
Authority
JP
Japan
Prior art keywords
ellipticity
zoom lens
lens
desired size
cylindrical
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
JP11217980A
Other languages
Japanese (ja)
Inventor
Nobuo Sakuma
Yutaka Kaneko
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 JP11217980A priority Critical patent/JPS5735824A/en
Publication of JPS5735824A publication Critical patent/JPS5735824A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/0005—Optical objectives specially designed for the purposes specified below having F-Theta characteristic
    • 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
    • G02B26/124—Details of the optical system between the light source and the polygonal mirror

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To obtain a beam spot of desired size with desired ellipticity by arranging a cylindrical zoom lens between a laser light source and a light beam scanning means. CONSTITUTION:Light emitted from a semiconductor laser 1 is converted by a coupling lens 2 into parallel luminous flux, and a cylindrical zoom lens 8 consisting of cylindrical lenses 81-83 varies the ellipticity of a beam shape continuously to obtain a desired beam shape. The beam is converted by a zoom lens 9 into one of desired size, which is focused on a surface 7 to be scanned through a rotary polygon mirror 5 and an ftheta lens 6, thereby performing line scanning. Consequently, a beam spot of desired size with desired ellipticity is obtained on the surface to be scanned.
JP11217980A 1980-08-14 1980-08-14 Light beam scanner Pending JPS5735824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11217980A JPS5735824A (en) 1980-08-14 1980-08-14 Light beam scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11217980A JPS5735824A (en) 1980-08-14 1980-08-14 Light beam scanner

Publications (1)

Publication Number Publication Date
JPS5735824A true JPS5735824A (en) 1982-02-26

Family

ID=14580222

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11217980A Pending JPS5735824A (en) 1980-08-14 1980-08-14 Light beam scanner

Country Status (1)

Country Link
JP (1) JPS5735824A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59100413A (en) * 1982-11-30 1984-06-09 Mita Ind Co Ltd Picture recorder
EP0686862A1 (en) * 1994-06-06 1995-12-13 Xerox Corporation Two-element zoom lens for beam separation error correction
EP0798587A2 (en) * 1996-03-29 1997-10-01 Sick AG Light spot generating device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5456779A (en) * 1977-10-14 1979-05-08 Canon Inc Optical system for semiconductor laser
JPS54143662A (en) * 1978-04-28 1979-11-09 Canon Inc Optical system for semiconductor laser
JPS54143661A (en) * 1978-04-28 1979-11-09 Canon Inc Recording optical system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5456779A (en) * 1977-10-14 1979-05-08 Canon Inc Optical system for semiconductor laser
JPS54143662A (en) * 1978-04-28 1979-11-09 Canon Inc Optical system for semiconductor laser
JPS54143661A (en) * 1978-04-28 1979-11-09 Canon Inc Recording optical system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59100413A (en) * 1982-11-30 1984-06-09 Mita Ind Co Ltd Picture recorder
EP0686862A1 (en) * 1994-06-06 1995-12-13 Xerox Corporation Two-element zoom lens for beam separation error correction
EP0798587A2 (en) * 1996-03-29 1997-10-01 Sick AG Light spot generating device
EP0798587A3 (en) * 1996-03-29 1998-09-02 Sick AG Light spot generating device

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