JPS6459209A - Optical scanning device - Google Patents

Optical scanning device

Info

Publication number
JPS6459209A
JPS6459209A JP62217081A JP21708187A JPS6459209A JP S6459209 A JPS6459209 A JP S6459209A JP 62217081 A JP62217081 A JP 62217081A JP 21708187 A JP21708187 A JP 21708187A JP S6459209 A JPS6459209 A JP S6459209A
Authority
JP
Japan
Prior art keywords
optical
scanning
scanning surface
optical filter
density
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
JP62217081A
Other languages
Japanese (ja)
Inventor
Shuji Mori
Koichi Takahashi
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.)
JAPAN IMAGING SYST KK
JAPAN IMEEJINGU SYST KK
Original Assignee
JAPAN IMAGING SYST KK
JAPAN IMEEJINGU SYST KK
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 JAPAN IMAGING SYST KK, JAPAN IMEEJINGU SYST KK filed Critical JAPAN IMAGING SYST KK
Priority to JP62217081A priority Critical patent/JPS6459209A/en
Publication of JPS6459209A publication Critical patent/JPS6459209A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To easily and uniformly correct the density of an optical energy by providing an optical filter having a characteristic of changing gradually optical transmittance, on the titled device. CONSTITUTION:The optical filter 5A is composed of a material such as a glass or a plastics, etc., and is formed to a flat plate in parallel and is disposed in parallel with a scanning surface 4 between a deflecting system 3A and the scanning surface 4 in an optical path. Said optical filter 5A covers an effective scanning length on the scanning surface 4, and has the characteristic of changing continuously the optical transmittance in almost proportion to 1/cos<2>theta (wherein thetais a polarizing angle) and in a scanning direction (x direction) locating a scanning center O as the center of the scanning surface. The optical filter 5A may be disposed in the prescribed position between the deflecting system 3A and the scanning surface 4 in the optical path. Thus, the density of the optical energy can be uniformly corrected.
JP62217081A 1987-08-29 1987-08-29 Optical scanning device Pending JPS6459209A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62217081A JPS6459209A (en) 1987-08-29 1987-08-29 Optical scanning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62217081A JPS6459209A (en) 1987-08-29 1987-08-29 Optical scanning device

Publications (1)

Publication Number Publication Date
JPS6459209A true JPS6459209A (en) 1989-03-06

Family

ID=16698528

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62217081A Pending JPS6459209A (en) 1987-08-29 1987-08-29 Optical scanning device

Country Status (1)

Country Link
JP (1) JPS6459209A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007034125A (en) * 2005-07-29 2007-02-08 Canon Inc Optical equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007034125A (en) * 2005-07-29 2007-02-08 Canon Inc Optical equipment

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