[go: up one dir, main page]

GB1419619A - Scanning devices - Google Patents

Scanning devices

Info

Publication number
GB1419619A
GB1419619A GB342972A GB342972A GB1419619A GB 1419619 A GB1419619 A GB 1419619A GB 342972 A GB342972 A GB 342972A GB 342972 A GB342972 A GB 342972A GB 1419619 A GB1419619 A GB 1419619A
Authority
GB
United Kingdom
Prior art keywords
drum
corner
combinations
scanning
face
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
GB342972A
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.)
Thales Communications Ltd
Original Assignee
Thales Communications 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 Thales Communications Ltd filed Critical Thales Communications Ltd
Priority to GB5422074A priority Critical patent/GB1419940A/en
Priority to GB342972A priority patent/GB1419619A/en
Priority to CA158,422A priority patent/CA986344A/en
Priority to JP1022973A priority patent/JPS5653734B2/ja
Priority to US05/536,471 priority patent/US3973826A/en
Priority to US05/536,472 priority patent/US3972583A/en
Publication of GB1419619A publication Critical patent/GB1419619A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/09—Multifaceted or polygonal mirrors, e.g. polygonal scanning mirrors; Fresnel mirrors
    • 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
    • G02B26/129—Systems in which the scanning light beam is repeatedly reflected from the polygonal mirror
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
    • H04N3/08—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving reflector

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

1419619 Optical scanning REDIFON Ltd 23 Nov 1972 [25 Jan 1972] 3429/72 Heading H4F An optical scanning system comprises a rotatable mirror drum 10 together with an arc of combinations 15 each of a lens 16 set at substantially its focal distance from the reflecting face of the drum and a roof prism 17 and which serve to receive a light beam 14, 14<SP>1</SP> after reflection at a face of drum 10 and to redirect it as a beam 14<SP>11</SP> to the same face, whereby the final beam 14<SP>111</SP> is deflected in the same sense as, and at four times the angular rate of, the rotation of the drum. In Fig. 1, the beam 14 is at a slight angle to the general plane of the system, and as the beam 14<SP>1</SP> traverses each roof prism it provides a corresponding line scan. The scanning of beam 14<SP>111</SP> is centred about the beam 14 when seen in plan view, but is vertically displaced therefrom. Fig. 2 (not shown) indicates how, by suitably relating the positions of combinations 15 with respect to the angles between adjacent faces on the drum 10, the light loss which would otherwise occur when a corner of drum 10 crosses beam 14 is eliminated. During that period, beam 14 is split into two beams incident on separate combinations 15, but the beams recombine when again incident on the drum corner to form a single scanning beam 14<SP>111</SP>. By this means it is possible to increase the width of beam 14 so that it is equal to, or greater than the width of individual faces of the mirror drum. A similar principle may apply if beam 14 falls on more than one corner of the drum simultaneously. The beam 14 may extend from a light source, e.g. a laser, or extend towards a stationary photodetector. It may be of ultra-violet or infra-red radiation. The system is said to be of use in surface inspection apparatus, for visual displays or video signal generation, and in apparatus for data recording and retrieval. Tracking of moving radiant areas is also mentioned.
GB342972A 1972-01-25 1972-01-25 Scanning devices Expired GB1419619A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB5422074A GB1419940A (en) 1972-01-25 1972-01-25 Xcanning devices
GB342972A GB1419619A (en) 1972-01-25 1972-01-25 Scanning devices
CA158,422A CA986344A (en) 1972-01-25 1972-12-01 Optical scanning devices
JP1022973A JPS5653734B2 (en) 1972-01-25 1973-01-24
US05/536,471 US3973826A (en) 1972-01-25 1974-12-26 Scanning devices
US05/536,472 US3972583A (en) 1972-01-25 1974-12-26 Scanning devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB342972A GB1419619A (en) 1972-01-25 1972-01-25 Scanning devices

Publications (1)

Publication Number Publication Date
GB1419619A true GB1419619A (en) 1975-12-31

Family

ID=9758179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB342972A Expired GB1419619A (en) 1972-01-25 1972-01-25 Scanning devices

Country Status (3)

Country Link
JP (1) JPS5653734B2 (en)
CA (1) CA986344A (en)
GB (1) GB1419619A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437007A1 (en) * 1978-09-19 1980-04-18 Elektro Optik Gmbh & Co Kg Blocking out interference beams in optical appts. - using automatic collimating mirror moving synchronously with optical main beam and its aperture bundle
GB2126751A (en) * 1982-09-14 1984-03-28 Spectra Physics Scanning using a rotating wheelbearing light deflecting facets
GB2517649A (en) * 1981-03-20 2015-03-04 Qinetiq Ltd Scanned imaging systems

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RO76090A2 (en) * 1979-04-16 1983-11-01 Institutul De Cercetari Si Proiectari Tehnologice In Transporturi,Ro OPTICAL-ELECTRONIC DEVICES FOR IDENTIFYING A PLATE RETROREFLECTORING CODE
KR101967369B1 (en) 2013-03-25 2019-04-09 닛산 가가쿠 가부시키가이샤 Heat-curable resin composition
KR101981788B1 (en) 2013-06-21 2019-05-27 닛산 가가쿠 가부시키가이샤 Heat-curable resin composition containing polymer having specific terminal structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3492063A (en) * 1966-11-14 1970-01-27 Honeywell Inc Multiple passage light beam deflection system
DE1497552A1 (en) * 1966-11-22 1969-10-09 Philips Patentverwaltung Reflector for digital light deflector systems
US3503671A (en) * 1967-04-17 1970-03-31 Bell Telephone Labor Inc Multiple-pass light-deflecting modulator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437007A1 (en) * 1978-09-19 1980-04-18 Elektro Optik Gmbh & Co Kg Blocking out interference beams in optical appts. - using automatic collimating mirror moving synchronously with optical main beam and its aperture bundle
GB2517649A (en) * 1981-03-20 2015-03-04 Qinetiq Ltd Scanned imaging systems
GB2517649B (en) * 1981-03-20 2016-03-23 Qinetiq Ltd Scanned imaging systems
US9485392B1 (en) * 1981-03-20 2016-11-01 Qinetiq Limited Scanned imaging systems
GB2126751A (en) * 1982-09-14 1984-03-28 Spectra Physics Scanning using a rotating wheelbearing light deflecting facets

Also Published As

Publication number Publication date
CA986344A (en) 1976-03-30
JPS5653734B2 (en) 1981-12-21
JPS4887850A (en) 1973-11-17

Similar Documents

Publication Publication Date Title
CA1084162A (en) Record playback system
GB1198655A (en) Entrant Beam Optical Scanner.
US3729248A (en) Optical scanning assembly with helical-shaped rotating reflector
SE8201306L (en) OPTICAL SWEEPING DEVICE
US4458982A (en) Optical scanning system including a rotatable drum with mirrors and including a rotatable optical shutter
GB1468253A (en) Apparatus for optically recording and/or reproducing information signals
US3650605A (en) Interferometric apparatus with controlled scanning means
CA2084324A1 (en) Optical pickup apparatus and a hologram element used for same
JPS56164312A (en) Optical deflecting device
GB1266571A (en)
US5011245A (en) Radiation scanning apparatus
GB2000321A (en) Optical scanner and system for laser beam exposure of photo surfaces
GB1392796A (en) Optical signal reproducing apparatus
GB1419619A (en) Scanning devices
GB1394570A (en) Light-beam steering apparatus
GB1099040A (en) High speed facsimile method and apparatus
GB1439226A (en) Optical scanning arrangement
US4775970A (en) Optical recording/reproducing apparatus for cards with reproduction light beam axes from a source and into a detector being parallel to the card
GB1522390A (en) Radiation scanning system
US3497298A (en) Optical scanning method for copying machines
GB1286565A (en) Optical device for space exploration
GB1419940A (en) Xcanning devices
US3650604A (en) Interferometric scanning apparatus and method
GB1265243A (en)
JPS5746334A (en) Optical information reproducer

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee