GB1418682A - Scanning systems - Google Patents

Scanning systems

Info

Publication number
GB1418682A
GB1418682A GB1171472A GB1171472A GB1418682A GB 1418682 A GB1418682 A GB 1418682A GB 1171472 A GB1171472 A GB 1171472A GB 1171472 A GB1171472 A GB 1171472A GB 1418682 A GB1418682 A GB 1418682A
Authority
GB
United Kingdom
Prior art keywords
mirror
solenoids
platform
reed
pivoted
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
GB1171472A
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.)
Plessey Co Ltd
Original Assignee
Plessey 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB1171472A priority Critical patent/GB1418682A/en
Publication of GB1418682A publication Critical patent/GB1418682A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
    • G02B7/1821—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors for rotating or oscillating mirrors

Landscapes

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

Abstract

1418682 Optical scanning PLESSEY CO Ltd 16 Feb 1973 [14 March 1972] 11714/72 Heading H4F [Also in Divisions G2 and H2] In an oscillating mirror optical scanner, the mirror 1 is pivoted about an axle 2 and caused to vibrate by means of an arcuate magnet 9 on an extension 8 moving within the polepieces 10, 11 of solenoids 12 and 13 energized by a pulsed voltage, the mirror coming up against end stops 4, 5 (possibly being resilient so as to absorb the impact energy and then release it) at the ends of its swing and the mounting platform 3, upon which the solenoids and end stops are fixed, being also pivoted about the axle 2 for limited damped movement as determined by two magnets 6, 7, the former on the platform and the latter on a stationary base. The limited movement of the platform renders the scan of the mirror more linear at its extremes. The mirror may carry a reed, vibrating at a desired (resonant) frequency, the reed interrupting the light from a source to a photo detector so that a pulsed reference signal is generated for controlling the pulsed voltage applied to the solenoids. The scanner may be used with a linear array of either light or infra-red detectors.
GB1171472A 1972-03-14 1972-03-14 Scanning systems Expired GB1418682A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1171472A GB1418682A (en) 1972-03-14 1972-03-14 Scanning systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1171472A GB1418682A (en) 1972-03-14 1972-03-14 Scanning systems

Publications (1)

Publication Number Publication Date
GB1418682A true GB1418682A (en) 1975-12-24

Family

ID=9991347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1171472A Expired GB1418682A (en) 1972-03-14 1972-03-14 Scanning systems

Country Status (1)

Country Link
GB (1) GB1418682A (en)

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Legal Events

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