JPS5450344A - Optical scanner - Google Patents

Optical scanner

Info

Publication number
JPS5450344A
JPS5450344A JP11639877A JP11639877A JPS5450344A JP S5450344 A JPS5450344 A JP S5450344A JP 11639877 A JP11639877 A JP 11639877A JP 11639877 A JP11639877 A JP 11639877A JP S5450344 A JPS5450344 A JP S5450344A
Authority
JP
Japan
Prior art keywords
scanning direction
scanning
plane
cylindrical lens
auxiliary
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
JP11639877A
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 JP11639877A priority Critical patent/JPS5450344A/en
Publication of JPS5450344A publication Critical patent/JPS5450344A/en
Pending legal-status Critical Current

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Landscapes

  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE:To make it possible to easily vary the length of a scanning spot in the auxiliary scanning direction by moving a cylindrical lens in the direction of the optical axis. CONSTITUTION:A projecting lens 3 and a cylindrical lens 20 are arranged between a rotary polygonal mirror 2 fro reflecting the optical flux from a light source and a scanning plane 4. The cylindrical lens 20 has a refractive power only in the auxiliary scanning direction and is made movable in the optical axis in front of the scanning plane 4. This plane 4 is removed from the focal point 22 concerned with the auxiliary scanning direction 21, and the focal point 24 concerned with the scanning direction 23 is moved to become coincident with the scanning plane 4. Thus, it is possible to form and optical image which has the minimum extension in the scanning direction and which is elongated in the auxiliary scanning direction.
JP11639877A 1977-09-28 1977-09-28 Optical scanner Pending JPS5450344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11639877A JPS5450344A (en) 1977-09-28 1977-09-28 Optical scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11639877A JPS5450344A (en) 1977-09-28 1977-09-28 Optical scanner

Publications (1)

Publication Number Publication Date
JPS5450344A true JPS5450344A (en) 1979-04-20

Family

ID=14686045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11639877A Pending JPS5450344A (en) 1977-09-28 1977-09-28 Optical scanner

Country Status (1)

Country Link
JP (1) JPS5450344A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62275214A (en) * 1986-05-23 1987-11-30 Hitachi Ltd Recording optical system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62275214A (en) * 1986-05-23 1987-11-30 Hitachi Ltd Recording optical system

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