JPS5538529A - Light scanning device - Google Patents

Light scanning device

Info

Publication number
JPS5538529A
JPS5538529A JP11134578A JP11134578A JPS5538529A JP S5538529 A JPS5538529 A JP S5538529A JP 11134578 A JP11134578 A JP 11134578A JP 11134578 A JP11134578 A JP 11134578A JP S5538529 A JPS5538529 A JP S5538529A
Authority
JP
Japan
Prior art keywords
hologram
point
concave lens
lens system
photo
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
JP11134578A
Other languages
Japanese (ja)
Inventor
Hiroyoshi Funato
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP11134578A priority Critical patent/JPS5538529A/en
Publication of JPS5538529A publication Critical patent/JPS5538529A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To achieve the improvement in the performance of a photo polarizing system and the lower cost of the photo polarizer with sinple constitution by disposing a concave lens system between a hologram and a scanning plane.
CONSTITUTION: Light diffracted from a hologram is entered to the concave lens system L placed behind the same and is refracted there. The hologram of this time comprises disposing the one made as the spherical waves focusing at the P0 point as object light and the spherical waves emitting from the Q point as reference light on a cylindrical medium S. Such hologram is radiated by the spherical waves emitted from the Q point. The primary light diffracted at this time moves its converges spot on the circumference of a radius P0Q0 with the Q0 point on the rotating axis of the cylinder as a center. If the concave lens system L is incorporated here, the light spot having been polarized moves on an arc P'P'0. At this time, the angle of polarization is increased by the diversion action of the concave lens system. In this way, the performance of the photo polarization system may be improved.
COPYRIGHT: (C)1980,JPO&Japio
JP11134578A 1978-09-12 1978-09-12 Light scanning device Pending JPS5538529A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11134578A JPS5538529A (en) 1978-09-12 1978-09-12 Light scanning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11134578A JPS5538529A (en) 1978-09-12 1978-09-12 Light scanning device

Publications (1)

Publication Number Publication Date
JPS5538529A true JPS5538529A (en) 1980-03-18

Family

ID=14558830

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11134578A Pending JPS5538529A (en) 1978-09-12 1978-09-12 Light scanning device

Country Status (1)

Country Link
JP (1) JPS5538529A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59128524A (en) * 1983-01-13 1984-07-24 Konishiroku Photo Ind Co Ltd Exposure optical system for laser printer
JPS62141514A (en) * 1985-12-16 1987-06-25 Fujitsu Ltd Laser scanner
JPH02181081A (en) * 1988-12-28 1990-07-13 Kyocera Corp Single shaft eccentric screw pump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59128524A (en) * 1983-01-13 1984-07-24 Konishiroku Photo Ind Co Ltd Exposure optical system for laser printer
JPS62141514A (en) * 1985-12-16 1987-06-25 Fujitsu Ltd Laser scanner
JPH071349B2 (en) * 1985-12-16 1995-01-11 富士通株式会社 Laser Skiana
JPH02181081A (en) * 1988-12-28 1990-07-13 Kyocera Corp Single shaft eccentric screw pump

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