GB1393896A - Optical deflecting devices - Google Patents

Optical deflecting devices

Info

Publication number
GB1393896A
GB1393896A GB3454271A GB3454271A GB1393896A GB 1393896 A GB1393896 A GB 1393896A GB 3454271 A GB3454271 A GB 3454271A GB 3454271 A GB3454271 A GB 3454271A GB 1393896 A GB1393896 A GB 1393896A
Authority
GB
United Kingdom
Prior art keywords
reflector
coil
movable part
electrical
optical
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
GB3454271A
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.)
Vickers Ltd
Original Assignee
Vickers 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 Vickers Ltd filed Critical Vickers Ltd
Priority to GB3454271A priority Critical patent/GB1393896A/en
Priority to DE19722235654 priority patent/DE2235654A1/en
Publication of GB1393896A publication Critical patent/GB1393896A/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59—Transmissivity
    • G01N21/5907—Densitometers
    • G01N21/5911—Densitometers of the scanning type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/04—Arrangements for displaying electric variables or waveforms for producing permanent records

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)

Abstract

1393896 Optical reflectors; scanning; automatic control of oscillation VICKERS Ltd 10 July 1972 [22 July 1971] 34542/71 Headings G2J and G3R An optical deflecting device, which may be used to provide a scanning spot, comprises a stationary part 1 and a movable part 4, one of these parts carrying an electrical coil 3, the arrangement being such that the passage of a current through the coil, by interaction with the other part, moves the movable part in the direction of its winding axis X-X; the device also including an optical reflector 9, first and second flexure springs 7 and 8 whereby the reflector is coupled to the movable part and the stationary part, respectively, so that movement of the movable part produces rotational movement of the reflector other than about an axis perpendicular to the reflector, and a strain gauge carried by one of the flexure springs and connected in a control circuit for forming an electrical signal dependent upon the magnitude and direction of the displacement, which electrical signal can be employed as a negative feedback signal for controlling supply of the electric current. Stationary member 1, as shown, carries magnet 2 (which may be permanent or an electromagnet), the magnet preferably being formed with an annular recess to accommodate coil 3. To provide a repetitive scan, a sawtooth waveform current is applied to the coil. Strain gauges 11, 12 are used to produce electrical signals representing the actual displacement, and these signals applied as negative feedback to the energizing waveform. An electrical circuit is disclosed, Fig. 2 (not shown) to achieve this effect.
GB3454271A 1971-07-22 1971-07-22 Optical deflecting devices Expired GB1393896A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3454271A GB1393896A (en) 1971-07-22 1971-07-22 Optical deflecting devices
DE19722235654 DE2235654A1 (en) 1971-07-22 1972-07-20 OPTICAL DEFLECTOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3454271A GB1393896A (en) 1971-07-22 1971-07-22 Optical deflecting devices

Publications (1)

Publication Number Publication Date
GB1393896A true GB1393896A (en) 1975-05-14

Family

ID=10366918

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3454271A Expired GB1393896A (en) 1971-07-22 1971-07-22 Optical deflecting devices

Country Status (2)

Country Link
DE (1) DE2235654A1 (en)
GB (1) GB1393896A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4011003A (en) * 1975-03-10 1977-03-08 U.S. Philips Corporation Electromagnetically controllable pivoting mirror device
US4021096A (en) * 1975-10-20 1977-05-03 U.S. Philips Corporation Electrodynamically controllable pivoting mirror device
GB2029600A (en) * 1978-06-21 1980-03-19 Universal Pioneer Corp Movable mirror device for optical information recording and reproducing system
CN114167574A (en) * 2021-12-10 2022-03-11 中国科学院光电技术研究所 Micro-displacement adjusting mechanism for reflector

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4480914A (en) * 1982-09-13 1984-11-06 The Foxboro Company Vibration compensating interferometer mirror drive system
SU1430931A1 (en) * 1985-11-04 1988-10-15 Институт Машиноведения Им.А.А.Благонравова Scanner for process laser units
FR2622710A1 (en) * 1987-10-30 1989-05-05 Sciaky Sa Device for control of the pivoting of a tool, especially of a mirror for reflecting a laser beam
FR2690532A1 (en) * 1992-04-27 1993-10-29 Europ Agence Spatiale Pointing, or aiming, device for optical equipment e.g. for satellite communication using modulated laser beam - has system of two mirrors rotating about axes perpendicular to each other with fine tuning of first mirror

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4011003A (en) * 1975-03-10 1977-03-08 U.S. Philips Corporation Electromagnetically controllable pivoting mirror device
US4021096A (en) * 1975-10-20 1977-05-03 U.S. Philips Corporation Electrodynamically controllable pivoting mirror device
GB2029600A (en) * 1978-06-21 1980-03-19 Universal Pioneer Corp Movable mirror device for optical information recording and reproducing system
GB2029600B (en) * 1978-06-21 1983-02-02 Universal Pioneer Corp Movable mirror device for optical information recording and reproducing system
CN114167574A (en) * 2021-12-10 2022-03-11 中国科学院光电技术研究所 Micro-displacement adjusting mechanism for reflector
CN114167574B (en) * 2021-12-10 2023-06-13 中国科学院光电技术研究所 Micro-displacement adjusting mechanism for reflecting mirror

Also Published As

Publication number Publication date
DE2235654A1 (en) 1973-02-01

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Legal Events

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