JPS6452116A - Optical scanning device - Google Patents

Optical scanning device

Info

Publication number
JPS6452116A
JPS6452116A JP20808887A JP20808887A JPS6452116A JP S6452116 A JPS6452116 A JP S6452116A JP 20808887 A JP20808887 A JP 20808887A JP 20808887 A JP20808887 A JP 20808887A JP S6452116 A JPS6452116 A JP S6452116A
Authority
JP
Japan
Prior art keywords
curvature
light beam
reflecting mirror
scanning direction
single lens
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
JP20808887A
Other languages
Japanese (ja)
Other versions
JP2635604B2 (en
Inventor
Takaki Hisada
Yoshio Ariki
Shunichi Taguchi
Takesuke Maruyama
Yoshifumi Honma
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62208088A priority Critical patent/JP2635604B2/en
Publication of JPS6452116A publication Critical patent/JPS6452116A/en
Application granted granted Critical
Publication of JP2635604B2 publication Critical patent/JP2635604B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE:To reduce curvature of field and distortion by converging a light beam through a spherical single lens and a reflecting mirror with a reflecting surface whose radius of curvature in a scanning direction is larger than the radius of curvature in a direction crossing said scanning direction. CONSTITUTION:The light beam generating device consisting of a light source 1, etc., sends the light beam to a deflecting device 6. The deflecting device 6 deflects the light beam and the spherical single lens 8 converges the light beam to correct the curvature of field and distortion in a main scanning direction roughly. The light beam passed through the spherical single lens 8 is converged on a toric surface reflecting mirror 9 and converged as a spot on the scanned surface of a photosensitive drum 10. The toric surface reflecting mirror 9 is formed as a reflecting mirror whose radius of curvature in the scanning direction is larger than the radius of curvature in the direction crossing the scanning direction at right angles and the remainder which can not be compensated by the spherical single lens 8 is compensated. Thus the light beam is converged through the spherical single lens and toric surface reflecting mirror, the curvature of field and distortion are suppressed within permissible ranges, and the device is reduced in size.
JP62208088A 1987-08-24 1987-08-24 Optical scanning device Expired - Fee Related JP2635604B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62208088A JP2635604B2 (en) 1987-08-24 1987-08-24 Optical scanning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62208088A JP2635604B2 (en) 1987-08-24 1987-08-24 Optical scanning device

Publications (2)

Publication Number Publication Date
JPS6452116A true JPS6452116A (en) 1989-02-28
JP2635604B2 JP2635604B2 (en) 1997-07-30

Family

ID=16550439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62208088A Expired - Fee Related JP2635604B2 (en) 1987-08-24 1987-08-24 Optical scanning device

Country Status (1)

Country Link
JP (1) JP2635604B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5548042A (en) * 1994-08-19 1996-08-20 Union Carbide Chemical & Plastics Technology Corporation Process for the production of polypropylene

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0727125A (en) * 1993-07-13 1995-01-27 Nissan Motor Co Ltd Rotary shaft installing structure

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0727125A (en) * 1993-07-13 1995-01-27 Nissan Motor Co Ltd Rotary shaft installing structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5548042A (en) * 1994-08-19 1996-08-20 Union Carbide Chemical & Plastics Technology Corporation Process for the production of polypropylene

Also Published As

Publication number Publication date
JP2635604B2 (en) 1997-07-30

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees