GB1419940A - Xcanning devices - Google Patents

Xcanning devices

Info

Publication number
GB1419940A
GB1419940A GB5422074A GB5422074A GB1419940A GB 1419940 A GB1419940 A GB 1419940A GB 5422074 A GB5422074 A GB 5422074A GB 5422074 A GB5422074 A GB 5422074A GB 1419940 A GB1419940 A GB 1419940A
Authority
GB
United Kingdom
Prior art keywords
drum
face
mirror
centred
optical scanning
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
GB5422074A
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.)
REFIFON Ltd
Original Assignee
REFIFON 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 REFIFON Ltd filed Critical REFIFON Ltd
Priority to GB5422074A priority Critical patent/GB1419940A/en
Priority claimed from GB342972A external-priority patent/GB1419619A/en
Publication of GB1419940A publication Critical patent/GB1419940A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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

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)

Abstract

1419940 Optical scanning REDIFON Ltd 23 Nov 1972 [25 Jan 1972] 54220/74 Divided out of 1419619 Heading H4F In an optical scanning system a plane faced mirror drum 30 is rigidly mounted for synchronous rotation with a drum 31 having an equal number of convex part-spherical reflective faces centred near, but not at, the rotation axis 34, so that a static beam 38 after reflection at drum 31 and by a mirror 32 becomes a beam 38<SP>II</SP> which moves so that it remains substantially centred on the in use reflecting face of drum 30 for a line scan (the time between successive corners of drum 31 intercepting beam 38), after which it is centred on a succeeding face. As shown, beam 38 is focused at the surface of drum 31 so that the fly-back time is small. The mirror 32 is concave so that diverging beam 38<SP>I</SP> is converged (38<SP>II</SP>) so that its width at drum 30 is equal to the width of each drum face 36, and subsequently (38<SP>III</SP>) comes to a focus at a roof prism 300 serving to return the beam (38<SP>IV</SP>) to the same face 36 of drum 30. The final beam 38<SP>V</SP> therefore has an angular rotation of four times that of drum 30, and in the same sense. The fixed beam 38 which may be ultra-violet visible or infra-red, may extend from a laser or towards a fixed photodetector. 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.
GB5422074A 1972-01-25 1972-01-25 Xcanning devices Expired GB1419940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5422074A GB1419940A (en) 1972-01-25 1972-01-25 Xcanning devices

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
GB1419940A true GB1419940A (en) 1975-12-31

Family

ID=26238297

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5422074A Expired GB1419940A (en) 1972-01-25 1972-01-25 Xcanning devices

Country Status (1)

Country Link
GB (1) GB1419940A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157845A (en) * 1984-04-26 1985-10-30 Pharos Ab Optical mechanical scanning device
GB2517649A (en) * 1981-03-20 2015-03-04 Qinetiq Ltd Scanned imaging systems

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
GB2157845A (en) * 1984-04-26 1985-10-30 Pharos Ab Optical mechanical scanning device
DE3514302A1 (en) * 1984-04-26 1985-10-31 Pharos AB, Lidingö OPTICAL SCANNER
US4632503A (en) * 1984-04-26 1986-12-30 Pharos Ab Optical scanning device

Similar Documents

Publication Publication Date Title
GB1198655A (en) Entrant Beam Optical Scanner.
GB1413666A (en) Scanning system for scanning an object with energy
GB1431059A (en) Light beam scanning system
US4408826A (en) Apparatus for scanning a laser beam including means for focusing a scale scanning beam and a read/write scanning beam on the same facet of a polygon scanning mirror
GB1437346A (en) Optical scanning arrangement
US3277772A (en) Optical scanning system
ATE14246T1 (en) OPTICAL-MECHANICAL SCANNING MECHANISM.
GB1452300A (en) Flying spot scanner with scan detection
GB1452299A (en) Flying spot scanner with scan detection
GB1212388A (en) Improvements relating to scanning systems
JPS56164312A (en) Optical deflecting device
GB1400841A (en) Apparatus for determining the profile of a plane or cylindrical surface
US5011245A (en) Radiation scanning apparatus
GB2000321A (en) Optical scanner and system for laser beam exposure of photo surfaces
GB1196373A (en) Optical Scanning System
GB1439226A (en) Optical scanning arrangement
GB1519819A (en) Reading optical recordings
US3956586A (en) Method of optical scanning
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
GB1281405A (en) Laser scanning system including rotating reflector
GB487318A (en) Improvements in or relating to scanning devices for television and like systems
GB1419619A (en) Scanning devices
GB1419940A (en) Xcanning devices
US3812371A (en) Scanning beam position indicator
GB1396999A (en) Optical-mechanical scanning by means reflectors

Legal Events

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