BE890654A - Telescopes afocaux a refraction et a deux grossissements - Google Patents

Telescopes afocaux a refraction et a deux grossissements

Info

Publication number
BE890654A
BE890654A BE2/59404A BE2059404A BE890654A BE 890654 A BE890654 A BE 890654A BE 2/59404 A BE2/59404 A BE 2/59404A BE 2059404 A BE2059404 A BE 2059404A BE 890654 A BE890654 A BE 890654A
Authority
BE
Belgium
Prior art keywords
afocal
refraction
telescopes
magnification
magnification telescopes
Prior art date
Application number
BE2/59404A
Other languages
English (en)
French (fr)
Inventor
I A Neil
Original Assignee
Barr & Stroud 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 Barr & Stroud Ltd filed Critical Barr & Stroud Ltd
Publication of BE890654A publication Critical patent/BE890654A/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/02—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective
    • G02B15/04—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective by changing a part
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Lenses (AREA)
  • Telescopes (AREA)
  • Compositions Of Oxide Ceramics (AREA)
BE2/59404A 1980-10-08 1981-10-07 Telescopes afocaux a refraction et a deux grossissements BE890654A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8032396 1980-10-08

Publications (1)

Publication Number Publication Date
BE890654A true BE890654A (fr) 1982-02-01

Family

ID=10516546

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2/59404A BE890654A (fr) 1980-10-08 1981-10-07 Telescopes afocaux a refraction et a deux grossissements

Country Status (10)

Country Link
US (1) US4469396A (en])
BE (1) BE890654A (en])
CH (1) CH656013A5 (en])
DE (1) DE3138817A1 (en])
FR (1) FR2491634A1 (en])
IN (1) IN154900B (en])
IT (1) IT1145115B (en])
NL (1) NL8104195A (en])
NO (1) NO157635C (en])
SE (1) SE450670B (en])

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2152227B (en) * 1982-01-14 1986-01-29 Barr & Stroud Ltd Infrared optical system
DE3342002A1 (de) * 1982-11-23 1984-05-30 Barr & Stroud Ltd., Glasgow, Scotland Mehrlinsiges objektiv zur verwendung im infraroten spektralbereich
US4542954A (en) * 1983-11-10 1985-09-24 The United States Of America As Represented By The Secretary Of The Army Wide angle lens for the infrared dedicatory clause
JPS6187116A (ja) * 1984-09-28 1986-05-02 Canon Inc 変倍光学系
DE3542502A1 (de) * 1985-12-02 1987-06-04 Elektro Optik Gmbh & Co Kg Thermograph mit umschaltung des bildwinkels
GB2194072B (en) * 1986-04-03 1990-03-21 Pilkington Perkin Elmer Ltd Athermalised optical beam expander
JP2679017B2 (ja) * 1986-12-27 1997-11-19 ミノルタ株式会社 ２焦点切替レンズ系
US5204774A (en) * 1991-12-06 1993-04-20 Varo Inc. Night vision goggle with improved optical system
US5229880A (en) * 1992-03-09 1993-07-20 Hughes Aircraft Company Three field of view refractive afocal telescope
US5548439A (en) * 1994-12-27 1996-08-20 Hughes Aircraft Company Three field of view refractive infrared telescope with fixed medium filed of view
RU2172971C2 (ru) * 1998-07-08 2001-08-27 Открытое Акционерное Общество "Пеленг" Инфракрасный телескоп с двумя увеличениями
JP4731110B2 (ja) * 2003-11-05 2011-07-20 カシオ計算機株式会社 携帯機器
US20060107579A1 (en) * 2004-11-22 2006-05-25 Thomas Mark A Zoom scope with continuous main body
US20060254115A1 (en) * 2004-11-22 2006-11-16 Thomas Mark A Optical sight with side focus adjustment
US20060107580A1 (en) * 2004-11-22 2006-05-25 Thomas Mark A Scope with improved windage/elevation system
EP2848977B1 (en) * 2005-01-26 2018-02-28 Leupold & Stevens, Inc. Scope with improved magnification system
US8508864B2 (en) * 2008-08-25 2013-08-13 Acm Projektentwicklung Gmbh Objective lens system
US7880978B2 (en) * 2008-08-25 2011-02-01 Acm Projektentwicklung Gmbh Objective lens system
RU2386156C1 (ru) * 2008-10-15 2010-04-10 Институт физики полупроводников СО РАН Оптическая система с вынесенными зрачками для инфракрасной области спектра
KR101706264B1 (ko) * 2009-12-03 2017-02-14 삼성전자주식회사 줌 렌즈 시스템
CN102213822B (zh) * 2011-07-12 2013-03-13 中国电子科技集团公司第十一研究所 一种中波红外连续变焦镜头
TWI461728B (zh) 2011-09-02 2014-11-21 Largan Precision Co Ltd 影像鏡組
US8988773B2 (en) 2012-09-28 2015-03-24 Raytheon Canada Limited Optical sighting device
TWI477806B (zh) 2014-01-08 2015-03-21 Largan Precision Co Ltd 光學攝像鏡頭、取像裝置及可攜裝置
JP6450073B2 (ja) * 2014-01-29 2019-01-09 日本放送協会 レンズアレイ
DE102015104323A1 (de) * 2015-03-23 2016-09-29 Carl Zeiss Smt Gmbh Zoomsystem mit austauschbaren optischen Elementen
US10003751B2 (en) 2016-05-25 2018-06-19 The United States Of America, As Represented By The Secretary Of The Army Multiple field of view dual band optics with integrated calibration source
US10761307B2 (en) 2016-12-06 2020-09-01 Raytheon Company Bypass optical switch and methods

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3947084A (en) * 1975-02-28 1976-03-30 Hughes Aircraft Company Long-wave infrared afocal zoom telescope
US4397520A (en) * 1980-03-05 1983-08-09 Barr & Stroud Limited Afocal refractor telescopes
NL186880C (nl) * 1980-04-26 1991-03-18 Barr & Stroud Ltd Oculairlensstelsel.

Also Published As

Publication number Publication date
IN154900B (en]) 1984-12-22
US4469396A (en) 1984-09-04
FR2491634B3 (en]) 1983-07-08
NL8104195A (nl) 1982-05-03
DE3138817A1 (de) 1982-05-19
IT8168244A0 (it) 1981-09-25
FR2491634A1 (fr) 1982-04-09
CH656013A5 (de) 1986-05-30
NO157635C (no) 1988-04-20
SE450670B (sv) 1987-07-13
IT1145115B (it) 1986-11-05
NO157635B (no) 1988-01-11
NO813395L (no) 1982-04-13
SE8105941L (sv) 1982-04-09

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: BARR & STROUD LTD

Effective date: 19881031