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JPS5449152A - Optical scanner - Google Patents

Optical scanner

Info

Publication number
JPS5449152A
JPS5449152A JP11506577A JP11506577A JPS5449152A JP S5449152 A JPS5449152 A JP S5449152A JP 11506577 A JP11506577 A JP 11506577A JP 11506577 A JP11506577 A JP 11506577A JP S5449152 A JPS5449152 A JP S5449152A
Authority
JP
Japan
Prior art keywords
scanning
cylindrical lens
scanning plane
rotary mirror
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.)
Pending
Application number
JP11506577A
Other languages
Japanese (ja)
Inventor
Nobune Hatsutori
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP11506577A priority Critical patent/JPS5449152A/en
Publication of JPS5449152A publication Critical patent/JPS5449152A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE:To keep unevenness of pitch occuring in the inclination of a rotary mirror small and make scanning light point sufficiently small by using a convex cylindrical lens and a concave cylindrical lens having refracting power only in the direction perpendicular to the scanning direction within the scanning plane. CONSTITUTION:A convex cylindrical lens 36 having refracting power only in the dirction perpendicular to the scanning direction in the scanning plane is disposed in the position close to the scanning plane 35, and further a concave cylindrical lens 31 having refracting power only in the direction perpendicular to the scanning direction within the scanning plane is disposed between a laser light source 30 and a rotary mirror 33, between the rotary mirror 33 and condensing lens 34 or in proximity to the rear of the condensing lens 34. Here, if it is assumed that the rotary mirror 33 incline by DELTAtheta with respect to the X axis as shown in the sign 33', then the luminous flux out from the lens 34 becomes parallel luminous fluxes having an angle of approximately 2DELTAtheta with respect to the X axis. Said luminous fluxes deviate by 2DELTAthetaf2 in the Z direction on the scanning plane 35, but since the cylindrical lens 36 is disposed in proximity to the scanning plane, the quantity of said deviation is small.
JP11506577A 1977-09-27 1977-09-27 Optical scanner Pending JPS5449152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11506577A JPS5449152A (en) 1977-09-27 1977-09-27 Optical scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11506577A JPS5449152A (en) 1977-09-27 1977-09-27 Optical scanner

Publications (1)

Publication Number Publication Date
JPS5449152A true JPS5449152A (en) 1979-04-18

Family

ID=14653298

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11506577A Pending JPS5449152A (en) 1977-09-27 1977-09-27 Optical scanner

Country Status (1)

Country Link
JP (1) JPS5449152A (en)

Cited By (2)

* 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
DE3303934A1 (en) * 1982-02-05 1983-09-01 Ricoh Co., Ltd., Tokyo OPTICAL SCANING SYSTEM

Cited By (2)

* 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
DE3303934A1 (en) * 1982-02-05 1983-09-01 Ricoh Co., Ltd., Tokyo OPTICAL SCANING SYSTEM

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