FR2793892B1 - Systeme d'objectif a deux champs d'observation commutables - Google Patents

Systeme d'objectif a deux champs d'observation commutables

Info

Publication number
FR2793892B1
FR2793892B1 FR9906281A FR9906281A FR2793892B1 FR 2793892 B1 FR2793892 B1 FR 2793892B1 FR 9906281 A FR9906281 A FR 9906281A FR 9906281 A FR9906281 A FR 9906281A FR 2793892 B1 FR2793892 B1 FR 2793892B1
Authority
FR
France
Prior art keywords
objective system
observation fields
switchable
switchable observation
fields
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 - Fee Related
Application number
FR9906281A
Other languages
English (en)
Other versions
FR2793892A1 (fr
Inventor
Philip Rogers
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.)
Qioptiq Ltd
Original Assignee
Pilkington PE 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
Priority to US09/313,065 priority Critical patent/US6160668A/en
Priority to GB9911279A priority patent/GB2339619B/en
Priority claimed from GB9911279A external-priority patent/GB2339619B/en
Application filed by Pilkington PE Ltd filed Critical Pilkington PE Ltd
Priority to FR9906281A priority patent/FR2793892B1/fr
Publication of FR2793892A1 publication Critical patent/FR2793892A1/fr
Application granted granted Critical
Publication of FR2793892B1 publication Critical patent/FR2793892B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Lenses (AREA)
FR9906281A 1998-05-14 1999-05-18 Systeme d'objectif a deux champs d'observation commutables Expired - Fee Related FR2793892B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US09/313,065 US6160668A (en) 1998-05-14 1999-05-17 Optical systems
GB9911279A GB2339619B (en) 1998-05-14 1999-05-17 Optical systems
FR9906281A FR2793892B1 (fr) 1999-05-17 1999-05-18 Systeme d'objectif a deux champs d'observation commutables

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9911279A GB2339619B (en) 1998-05-14 1999-05-17 Optical systems
FR9906281A FR2793892B1 (fr) 1999-05-17 1999-05-18 Systeme d'objectif a deux champs d'observation commutables

Publications (2)

Publication Number Publication Date
FR2793892A1 FR2793892A1 (fr) 2000-11-24
FR2793892B1 true FR2793892B1 (fr) 2001-08-03

Family

ID=26234960

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9906281A Expired - Fee Related FR2793892B1 (fr) 1998-05-14 1999-05-18 Systeme d'objectif a deux champs d'observation commutables

Country Status (1)

Country Link
FR (1) FR2793892B1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1559514A (en) * 1976-10-02 1980-01-23 Pilkington Perkin Elmer Ltd Infra-red zoom lenses
JPS58108510A (ja) * 1981-12-23 1983-06-28 Canon Inc 切換え式変倍レンズ系
JPS60176013A (ja) * 1984-02-22 1985-09-10 Olympus Optical Co Ltd 補助レンズ系を備えた変倍レンズ系

Also Published As

Publication number Publication date
FR2793892A1 (fr) 2000-11-24

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Legal Events

Date Code Title Description
CD Change of name or company name

Owner name: QIOPTIQ LIMITED, GB

Effective date: 20141013

PLFP Fee payment

Year of fee payment: 17

ST Notification of lapse

Effective date: 20170131