GB1433333A - Optical viewing devices - Google Patents

Optical viewing devices

Info

Publication number
GB1433333A
GB1433333A GB2316572A GB2316572A GB1433333A GB 1433333 A GB1433333 A GB 1433333A GB 2316572 A GB2316572 A GB 2316572A GB 2316572 A GB2316572 A GB 2316572A GB 1433333 A GB1433333 A GB 1433333A
Authority
GB
United Kingdom
Prior art keywords
prism
image
intensifier
screen
spherical
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
GB2316572A
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.)
FIDELITY INSTR CO Ltd
Original Assignee
FIDELITY INSTR 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 FIDELITY INSTR CO Ltd filed Critical FIDELITY INSTR CO Ltd
Priority to GB2316572A priority Critical patent/GB1433333A/en
Priority to FR7317726A priority patent/FR2184923B3/fr
Priority to DE19732325135 priority patent/DE2325135C3/en
Priority to NL7306931A priority patent/NL7306931A/xx
Publication of GB1433333A publication Critical patent/GB1433333A/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
    • G02B23/12—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices with means for image conversion or intensification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/26—Peepholes; Windows; Loopholes
    • F41H5/266—Periscopes for fighting or armoured vehicles

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Telescopes (AREA)
  • Lenses (AREA)

Abstract

1433333 Viewing apparatus FIDELITY INSTRUMENT CO Ltd 2 May 1973 [17 May 1972] 23165/72 Heading G2J [Also in Division H4] A binocular viewing device comprises means (e.g. prism 11, objective 17 and image intensifier 18) for providing an original luminous image on a surface 19 and at least two reflecting surfaces 22, 23 one of which is concave to focus at infinity a final image of the luminous image. The optical paths 25, 26, 27 lie substantially wholly within solid or liquid or partially solid and partially liquid media. In one embodiment, Fig. 1, an electro-optical periscope comprises a pentaprism 11 which directs light through an objective 17 and image intensifier 18 to form an image on cathode ray screen 19 attached to a prism 20. Prism 20 has a spherical, concave, reflecting face 22, which forms an image of the screen 19 at infinity, and a plane reflecting face 23 from which light leaves the prism to pass through a corrector plate 24 to both eyes of the observer. In a modification, Fig. 2, the prism 31 has two spherical reflecting faces 33, 34 and a semitransparent mirror 32. In another modification (not shown) of Fig. 1, the pentaprism is replaced by a triangular prism and prism 21 is provided with two plane mirror surfaces to give the correct image inversions. In yet another modification (not shown) the pentaprism is replaced by a roof prism and a sandwich of a photocathode, a channel plate and a cathodoluminescent screen replaces the intensifier 18. In a further embodiment, Fig. 3B, a line-ofsight image intensifier comprises an objective (not shown) which forms images on the photocathode of an intensifier 41 whose screen 46 is attached to a composite prism 43 of the form shown, wherein the spherical reflecting face 48 produces an image at infinity of screen 46. Another line-of-sight intensifier, Fig. 4A, comprises a fibre-optic bundle 64 between the screen 63 and prism 66 having a spherical reflecting face 67. Yet another line-of-sight intensifier, Fig. 5B, comprises a prism 71 having a plane reflecting face 72 and two spherical silvered surfaces 73, 74.
GB2316572A 1972-05-17 1972-05-17 Optical viewing devices Expired GB1433333A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB2316572A GB1433333A (en) 1972-05-17 1972-05-17 Optical viewing devices
FR7317726A FR2184923B3 (en) 1972-05-17 1973-05-16
DE19732325135 DE2325135C3 (en) 1972-05-17 1973-05-17 Optical viewing device
NL7306931A NL7306931A (en) 1972-05-17 1973-05-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2316572A GB1433333A (en) 1972-05-17 1972-05-17 Optical viewing devices

Publications (1)

Publication Number Publication Date
GB1433333A true GB1433333A (en) 1976-04-28

Family

ID=10191225

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2316572A Expired GB1433333A (en) 1972-05-17 1972-05-17 Optical viewing devices

Country Status (3)

Country Link
FR (1) FR2184923B3 (en)
GB (1) GB1433333A (en)
NL (1) NL7306931A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470396A1 (en) * 1979-11-22 1981-05-29 Pilkington Brothers Ltd IMPROVED OPTICAL APPARATUS FOR BINOCULAR VISION
US4322135A (en) 1978-11-29 1982-03-30 Pilkington P. E. Limited Optical apparatus
US4828378A (en) * 1986-09-17 1989-05-09 Gec-Marconi Limited Night vision viewing systems
WO2002050597A1 (en) * 2000-12-18 2002-06-27 Sagem Sa Binocular system consisting of two aspherical mirrors and assembly of such a system and a portable terminal

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2948687A1 (en) * 1979-12-04 1981-06-11 Philips Patentverwaltung Gmbh, 2000 Hamburg BINOCULAR VIEWING ARRANGEMENT
DE3266408D1 (en) * 1981-10-14 1985-10-24 Gec Avionics Optical arrangements for head-up displays and night vision goggles
RU195121U1 (en) * 2019-09-20 2020-01-15 Акционерное общество "Научно-производственное предприятие "Пульсар" Hybrid photodetector module for low-level television surveillance camera

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4322135A (en) 1978-11-29 1982-03-30 Pilkington P. E. Limited Optical apparatus
FR2470396A1 (en) * 1979-11-22 1981-05-29 Pilkington Brothers Ltd IMPROVED OPTICAL APPARATUS FOR BINOCULAR VISION
US4392710A (en) 1979-11-22 1983-07-12 Pilkington P. E. Limited Optical apparatus
US4828378A (en) * 1986-09-17 1989-05-09 Gec-Marconi Limited Night vision viewing systems
WO2002050597A1 (en) * 2000-12-18 2002-06-27 Sagem Sa Binocular system consisting of two aspherical mirrors and assembly of such a system and a portable terminal

Also Published As

Publication number Publication date
FR2184923A1 (en) 1973-12-28
NL7306931A (en) 1973-11-20
DE2325135A1 (en) 1973-11-22
DE2325135B2 (en) 1976-04-15
FR2184923B3 (en) 1976-04-30

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Legal Events

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