GB1257012A - - Google Patents

Info

Publication number
GB1257012A
GB1257012A GB1257012DA GB1257012A GB 1257012 A GB1257012 A GB 1257012A GB 1257012D A GB1257012D A GB 1257012DA GB 1257012 A GB1257012 A GB 1257012A
Authority
GB
United Kingdom
Prior art keywords
stack
fibre
glass
photochromism
erect
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 GB1257012A publication Critical patent/GB1257012A/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
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/26—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes using light guides
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/23—Photochromic filters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

1,257,012. Photochromism. BRITISH AIRCRAFT CORP. Ltd. 1 June, 1967 [2 March, 1966], No. 9244/66. Heading C4S. A fibre optic stack, suitable for use in the optical system disclosed in Specification 1,257,011, has its fibre glass constituted by photochromic glass. In one embodiment (Fig. 4, not shown) the stack is twisted through 180 degrees to erect the image.
GB1257012D 1966-03-02 1966-03-02 Expired GB1257012A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB924466 1966-03-02

Publications (1)

Publication Number Publication Date
GB1257012A true GB1257012A (en) 1971-12-15

Family

ID=9868219

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1257012D Expired GB1257012A (en) 1966-03-02 1966-03-02

Country Status (1)

Country Link
GB (1) GB1257012A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111529A (en) * 1974-08-14 1978-09-05 Olympus Optical Co., Ltd. Optical system for an endoscope

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111529A (en) * 1974-08-14 1978-09-05 Olympus Optical Co., Ltd. Optical system for an endoscope

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee