JPS55161210A - Light beam scanner - Google Patents

Light beam scanner

Info

Publication number
JPS55161210A
JPS55161210A JP6792079A JP6792079A JPS55161210A JP S55161210 A JPS55161210 A JP S55161210A JP 6792079 A JP6792079 A JP 6792079A JP 6792079 A JP6792079 A JP 6792079A JP S55161210 A JPS55161210 A JP S55161210A
Authority
JP
Japan
Prior art keywords
luminous flux
disc
concave mirror
parallel
motor
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
JP6792079A
Other languages
Japanese (ja)
Inventor
Michiharu Abe
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 JP6792079A priority Critical patent/JPS55161210A/en
Publication of JPS55161210A publication Critical patent/JPS55161210A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

PURPOSE: To reduce cost, make wiring of a light source lighting circuit easy and enable the simplification of construction by providing a hologram lens disc, a motor which rotates this at an equal speed and a concave mirror.
CONSTITUTION: A hologram lens disc 7 is fixed at its central part to the shaft of a motor 1 and is so arranged as to be able to rotate at an equal speed about the axis running the central part and perpendicular to the disc 7 by the motor 1. The parallel laser beams 8 emitted from the laser light source not illustrated enter one of the discs 7 perpendicularly. At the P point of the figure, the once focused diffraction laser luminous flux becomes divergent laser luminous flux which then enters a concave mirror 5 and focuses toward the scanning plane 6. The scanning plane 6 is parallel to the rotating axis of the disc 7 and to scan the same linearly, the concave mirror 5 is so positioned that the center of curvature of the mirror face comes near the nondiffracted parallel laser luminous flux 80, and this simple necessitates determining the position of the concave mirror 5 in such a manner that the reflected luminous flux becomes approximately parallel to the disc 7 and passes near the parallel laser luminous flux 8.
COPYRIGHT: (C)1980,JPO&Japio
JP6792079A 1979-05-31 1979-05-31 Light beam scanner Pending JPS55161210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6792079A JPS55161210A (en) 1979-05-31 1979-05-31 Light beam scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6792079A JPS55161210A (en) 1979-05-31 1979-05-31 Light beam scanner

Publications (1)

Publication Number Publication Date
JPS55161210A true JPS55161210A (en) 1980-12-15

Family

ID=13358821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6792079A Pending JPS55161210A (en) 1979-05-31 1979-05-31 Light beam scanner

Country Status (1)

Country Link
JP (1) JPS55161210A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57158827A (en) * 1981-02-25 1982-09-30 Benson Inc Laser scanning system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5284757A (en) * 1975-12-31 1977-07-14 Fujitsu Ltd Optical scanner using hologram
JPS52123635A (en) * 1976-04-09 1977-10-18 Ricoh Co Ltd Optical scanner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5284757A (en) * 1975-12-31 1977-07-14 Fujitsu Ltd Optical scanner using hologram
JPS52123635A (en) * 1976-04-09 1977-10-18 Ricoh Co Ltd Optical scanner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57158827A (en) * 1981-02-25 1982-09-30 Benson Inc Laser scanning system

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