GB1297729A - - Google Patents

Info

Publication number
GB1297729A
GB1297729A GB1297729DA GB1297729A GB 1297729 A GB1297729 A GB 1297729A GB 1297729D A GB1297729D A GB 1297729DA GB 1297729 A GB1297729 A GB 1297729A
Authority
GB
United Kingdom
Prior art keywords
prism
mirror
axis
camera
helicopter
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
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 filed Critical
Publication of GB1297729A publication Critical patent/GB1297729A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/644—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for large deviations, e.g. maintaining a fixed line of sight while a vehicle on which the system is mounted changes course

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Telescopes (AREA)

Abstract

1297729 Stabilized optical systems FRANCE ARMED FORCES, MINISTER OF 19 April 1971 [19 Feb 1970] 21753/71 Heading G2J A sighting device for use in, e.g. a helicopter, has a mirror 2 that is stabilized in azimuth and elevation by a gyro which also stabilizes a prism 4 about the axis XX to prevent tilting of the image. The mirror 2 views through windows 8 in caps 3, 5, the cap 5 being resiliently mounted in the helicopter and the image is reflected from the mirror 2 through a Galilean telescope 6, the prism 4 and astronomical telescope 7 that may pivot about the axis XX. The observer may be replaced by a television or film camera and, if a television camera is used, the prism 4 could be replaced by electronic means for effectively rotating the scanning axis of the camera in dependance upon rotation of the azimuth of the gyro.
GB1297729D 1970-02-19 1971-04-19 Expired GB1297729A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7005888A FR2079972A5 (en) 1970-02-19 1970-02-19

Publications (1)

Publication Number Publication Date
GB1297729A true GB1297729A (en) 1972-11-29

Family

ID=9050905

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1297729D Expired GB1297729A (en) 1970-02-19 1971-04-19

Country Status (5)

Country Link
BE (1) BE762505A (en)
CH (1) CH537592A (en)
DE (1) DE2107151A1 (en)
FR (1) FR2079972A5 (en)
GB (1) GB1297729A (en)

Also Published As

Publication number Publication date
CH537592A (en) 1973-05-31
DE2107151A1 (en) 1971-11-11
FR2079972A5 (en) 1971-11-12
BE762505A (en) 1971-07-16

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years