DE2728304C2 - Light beam scanning device - uses vibrating mirror and focussing lens to move light spot at uniform velocity over surface - Google Patents

Light beam scanning device - uses vibrating mirror and focussing lens to move light spot at uniform velocity over surface

Info

Publication number
DE2728304C2
DE2728304C2 DE19772728304 DE2728304A DE2728304C2 DE 2728304 C2 DE2728304 C2 DE 2728304C2 DE 19772728304 DE19772728304 DE 19772728304 DE 2728304 A DE2728304 A DE 2728304A DE 2728304 C2 DE2728304 C2 DE 2728304C2
Authority
DE
Germany
Prior art keywords
focussing lens
scanning device
beam scanning
uniform velocity
vibrating mirror
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.)
Expired
Application number
DE19772728304
Other languages
German (de)
Other versions
DE2728304A1 (en
Inventor
Kazuo Yokohama Kanagawa Jp Minoura
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.)
Canon Inc
Original Assignee
Canon Inc
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
Priority claimed from JP7402876A external-priority patent/JPS53140A/en
Priority claimed from JP10856776A external-priority patent/JPS5333638A/en
Application filed by Canon Inc filed Critical Canon Inc
Publication of DE2728304A1 publication Critical patent/DE2728304A1/en
Application granted granted Critical
Publication of DE2728304C2 publication Critical patent/DE2728304C2/en
Expired 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

Landscapes

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

Abstract

A drive for the deflecting mirror vibrates it so that its rotational angle phi is equal to phi 0 sin K1t. There is a light source for generating an afocal beam toward the deflecting mirror. There is a focussing lens disposed between the deflecting mirror and a surface to be scanned as having an optical axis passing through the centre of the deflecting mirror, for imaging the beam on the surface to be scanned in a form of a spot. The focussing lens has a distortion characteristic represented by a given mathematical formula.
DE19772728304 1976-06-23 1977-06-23 Light beam scanning device - uses vibrating mirror and focussing lens to move light spot at uniform velocity over surface Expired DE2728304C2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP7402876A JPS53140A (en) 1976-06-23 1976-06-23 Scanning optical system
JP10856776A JPS5333638A (en) 1976-09-10 1976-09-10 Scanning optical system
JP5570077 1977-05-20

Publications (2)

Publication Number Publication Date
DE2728304A1 DE2728304A1 (en) 1978-01-05
DE2728304C2 true DE2728304C2 (en) 1987-01-15

Family

ID=27295675

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772728304 Expired DE2728304C2 (en) 1976-06-23 1977-06-23 Light beam scanning device - uses vibrating mirror and focussing lens to move light spot at uniform velocity over surface

Country Status (1)

Country Link
DE (1) DE2728304C2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54145551A (en) * 1978-05-08 1979-11-13 Canon Inc Projection optical system
JPS552231A (en) * 1978-06-19 1980-01-09 Canon Inc Scanner
JPS55149916A (en) * 1979-04-25 1980-11-21 Xerox Corp Laser scan device
JPS57105715A (en) * 1980-12-24 1982-07-01 Canon Inc Uniform scanning lens having high resolving power

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573849A (en) * 1969-02-04 1971-04-06 Bell Telephone Labor Inc Pattern generating apparatus

Also Published As

Publication number Publication date
DE2728304A1 (en) 1978-01-05

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Legal Events

Date Code Title Description
OI Miscellaneous see part 1
OD Request for examination
D2 Grant after examination
8380 Miscellaneous part iii

Free format text: PATENTANSPRUCH 11, ZEILE 66 "(5,15,22)" AENDERN IN "(6,16,22)"

8364 No opposition during term of opposition