JPS63165815A - Optical scanner - Google Patents

Optical scanner

Info

Publication number
JPS63165815A
JPS63165815A JP31268286A JP31268286A JPS63165815A JP S63165815 A JPS63165815 A JP S63165815A JP 31268286 A JP31268286 A JP 31268286A JP 31268286 A JP31268286 A JP 31268286A JP S63165815 A JPS63165815 A JP S63165815A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
direction
slit
scanning
arranging
mirror
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
JP31268286A
Inventor
Yuji Ito
Original Assignee
Canon Inc
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

Links

Abstract

PURPOSE:To reduce the influence of uneven cutting to be exerted upon a scanning mirror surface by arranging a 1st slit having long sides in an optical beam scanning direction and short sides in its rectangular direction between a scanning mirror and an image forming optical system and arranging a 2nd slit in front of an image forming face. CONSTITUTION:In the optical scanner, a slit A is arranged between a polygon mirror 9 and an image formation lens 10 and a slit B is arranged between the lens 10 and a recording film 11. The slits A, B are the means for restricting diffraction beam component in the direction intersecting with the scanning direction and their aperture are formed so as to have long sides in the scanning direction and short sides in the intersecting direction. When laser beams are radiated from a light source 1 to the polygon mirror 9, diffraction is generated by the uneven cutting work on the reflecting face of the mirror 9, but the influence of the uneven cutting to be exerted upon the scanning mirror surface can be reduced by arranging the slits A, B for transmitting 0th-order diffraction light.
JP31268286A 1986-12-27 1986-12-27 Optical scanner Pending JPS63165815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31268286A JPS63165815A (en) 1986-12-27 1986-12-27 Optical scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31268286A JPS63165815A (en) 1986-12-27 1986-12-27 Optical scanner

Publications (1)

Publication Number Publication Date
JPS63165815A true true JPS63165815A (en) 1988-07-09

Family

ID=18032153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31268286A Pending JPS63165815A (en) 1986-12-27 1986-12-27 Optical scanner

Country Status (1)

Country Link
JP (1) JPS63165815A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5200730A (en) * 1991-10-18 1993-04-06 Ferrishield, Inc. Premolded suppressor sleeve
US5355109A (en) * 1992-02-03 1994-10-11 Kitagawa Industries Co., Ltd. Electric noise absorber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5200730A (en) * 1991-10-18 1993-04-06 Ferrishield, Inc. Premolded suppressor sleeve
US5355109A (en) * 1992-02-03 1994-10-11 Kitagawa Industries Co., Ltd. Electric noise absorber

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