JPS575026A - Light beam scanner - Google Patents

Light beam scanner

Info

Publication number
JPS575026A
JPS575026A JP7967480A JP7967480A JPS575026A JP S575026 A JPS575026 A JP S575026A JP 7967480 A JP7967480 A JP 7967480A JP 7967480 A JP7967480 A JP 7967480A JP S575026 A JPS575026 A JP S575026A
Authority
JP
Japan
Prior art keywords
spreading angle
conversion
adjustment
spreading
light beam
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
JP7967480A
Other languages
Japanese (ja)
Other versions
JPS6257970B2 (en
Inventor
Yutaka Kaneko
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 JP7967480A priority Critical patent/JPS575026A/en
Publication of JPS575026A publication Critical patent/JPS575026A/en
Publication of JPS6257970B2 publication Critical patent/JPS6257970B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/0005—Optical objectives specially designed for the purposes specified below having F-Theta characteristic
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/10—Scanning systems
    • G02B26/12—Scanning systems using multifaceted mirrors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE:To make the spreading angle and/or shape of the light beam from a laser light source adjustable by a transparent flexible member that can adjust curvature. CONSTITUTION:A coupling lens 12, a beam spreading angle correcting plate 13 which is a transparent flexible member permitting adjustment of curvature, a beam elliptical ratio converter 14, a beam expander 15, a rotary polyhedral mirror 16, an ftheta lens in a perpendicular direction, the 1st and 2nd mirrors, and a photosensitive drum 20 which is the surface to be scanned are disposed in front of a laser light source 11. The beam spreading angle correcting plate is bent around the optical axis in the direction parallel or perpendicular to the hetero-junction surface of the light beam, by which the spreading angle can be changed and the variance in the beam spreading angle can be adjusted. This device eliminates the need for adjustment by continuous changes for conversion of the elliptical ratio. This scanner is adaptable to elliptical ratio conversion and sectional dimention conversion other than to the adjustment of spreading angles.
JP7967480A 1980-06-13 1980-06-13 Light beam scanner Granted JPS575026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7967480A JPS575026A (en) 1980-06-13 1980-06-13 Light beam scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7967480A JPS575026A (en) 1980-06-13 1980-06-13 Light beam scanner

Publications (2)

Publication Number Publication Date
JPS575026A true JPS575026A (en) 1982-01-11
JPS6257970B2 JPS6257970B2 (en) 1987-12-03

Family

ID=13696730

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7967480A Granted JPS575026A (en) 1980-06-13 1980-06-13 Light beam scanner

Country Status (1)

Country Link
JP (1) JPS575026A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496209A (en) * 1982-03-21 1985-01-29 Konishiroku Photo Industry Co., Ltd. Optical beam scanning apparatus including a cylindrical lens having its opposite ends closer to the scanned plane than its medial portion
JPS6041772A (en) * 1983-08-17 1985-03-05 Hitachi Maxell Ltd Manufacture of spiral electrode
JPS6162017A (en) * 1984-09-04 1986-03-29 Ushio Inc Controlling method of illumination distribution
JPS62136778A (en) * 1985-12-10 1987-06-19 Matsushita Electric Ind Co Ltd Spiral type electrode plate group for alkaline storage battery

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496209A (en) * 1982-03-21 1985-01-29 Konishiroku Photo Industry Co., Ltd. Optical beam scanning apparatus including a cylindrical lens having its opposite ends closer to the scanned plane than its medial portion
JPS6041772A (en) * 1983-08-17 1985-03-05 Hitachi Maxell Ltd Manufacture of spiral electrode
JPS6162017A (en) * 1984-09-04 1986-03-29 Ushio Inc Controlling method of illumination distribution
JPS62136778A (en) * 1985-12-10 1987-06-19 Matsushita Electric Ind Co Ltd Spiral type electrode plate group for alkaline storage battery

Also Published As

Publication number Publication date
JPS6257970B2 (en) 1987-12-03

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