GB1482076A - Focusing of optical systems - Google Patents

Focusing of optical systems

Info

Publication number
GB1482076A
GB1482076A GB4090073A GB4090073A GB1482076A GB 1482076 A GB1482076 A GB 1482076A GB 4090073 A GB4090073 A GB 4090073A GB 4090073 A GB4090073 A GB 4090073A GB 1482076 A GB1482076 A GB 1482076A
Authority
GB
United Kingdom
Prior art keywords
focusing
optical systems
optical
systems
binoculars
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
GB4090073A
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB4090073A priority Critical patent/GB1482076A/en
Publication of GB1482076A publication Critical patent/GB1482076A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • G02B23/06—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors having a focussing action, e.g. parabolic mirror
    • 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
    • G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms

Landscapes

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

Abstract

1482076 Focusing optical systems DEFENCE SECRETARY OF STATE FOR 15 Oct 1974 [30 Aug 1973] 40900/73 Heading G2J In an optical system crossed prisms 1, 2 relatively movable as shown by the arrow 8, 9, are used to vary the length of the optical path between lens 10, 11 and thus to effect focusing. Binoculars telescopes microscopes and projection systems are mentioned.
GB4090073A 1974-10-15 1974-10-15 Focusing of optical systems Expired GB1482076A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4090073A GB1482076A (en) 1974-10-15 1974-10-15 Focusing of optical systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4090073A GB1482076A (en) 1974-10-15 1974-10-15 Focusing of optical systems

Publications (1)

Publication Number Publication Date
GB1482076A true GB1482076A (en) 1977-08-03

Family

ID=10417175

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4090073A Expired GB1482076A (en) 1974-10-15 1974-10-15 Focusing of optical systems

Country Status (1)

Country Link
GB (1) GB1482076A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0089758A2 (en) * 1982-03-24 1983-09-28 Plessey Overseas Limited Optical fibre attenuators
WO2017178223A1 (en) * 2016-04-13 2017-10-19 Dr. Johannes Heidenhain Gmbh Position measuring arrangement and method for operating a position measuring arrangement
CN108279470A (en) * 2018-03-19 2018-07-13 合肥芯碁微电子装备有限公司 A kind of high-precision focusing device encapsulated for direct-write photoetching in type
CN113467070A (en) * 2021-07-06 2021-10-01 卓外（上海）医疗电子科技有限公司 Endoscope imaging objective lens with focusing function and focusing method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0089758A2 (en) * 1982-03-24 1983-09-28 Plessey Overseas Limited Optical fibre attenuators
EP0089758A3 (en) * 1982-03-24 1984-04-04 Plessey Overseas Limited Optical fibre attenuators
WO2017178223A1 (en) * 2016-04-13 2017-10-19 Dr. Johannes Heidenhain Gmbh Position measuring arrangement and method for operating a position measuring arrangement
EP3443303B1 (en) * 2016-04-13 2021-05-12 Dr. Johannes Heidenhain GmbH Position measuring device and method for operating said position measuring device
CN108279470A (en) * 2018-03-19 2018-07-13 合肥芯碁微电子装备有限公司 A kind of high-precision focusing device encapsulated for direct-write photoetching in type
CN113467070A (en) * 2021-07-06 2021-10-01 卓外（上海）医疗电子科技有限公司 Endoscope imaging objective lens with focusing function and focusing method

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Legal Events

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