WO2009057085A3 - Objective lens for an endoscope of the retrofocus type having an achromat - Google Patents

Objective lens for an endoscope of the retrofocus type having an achromat Download PDF

Info

Publication number
WO2009057085A3
WO2009057085A3 PCT/IL2008/001327 IL2008001327W WO2009057085A3 WO 2009057085 A3 WO2009057085 A3 WO 2009057085A3 IL 2008001327 W IL2008001327 W IL 2008001327W WO 2009057085 A3 WO2009057085 A3 WO 2009057085A3
Authority
WO
WIPO (PCT)
Prior art keywords
objective lens
endoscope
achromat
retrofocus type
positive lens
Prior art date
Application number
PCT/IL2008/001327
Other languages
French (fr)
Other versions
WO2009057085A2 (en
Inventor
Victor Levin
Yaniv Kirma
Original Assignee
Stryker Gi Ltd
Victor Levin
Yaniv Kirma
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 Stryker Gi Ltd, Victor Levin, Yaniv Kirma filed Critical Stryker Gi Ltd
Publication of WO2009057085A2 publication Critical patent/WO2009057085A2/en
Publication of WO2009057085A3 publication Critical patent/WO2009057085A3/en

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
    • G02B23/2407—Optical details
    • G02B23/2423—Optical details of the distal end
    • G02B23/243—Objectives for endoscopes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/22—Telecentric objectives or lens systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration

Landscapes

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

Abstract

An objective lens (30) for an endoscope comprises a front (41a) and a rear (41b) optical sub-system and an aperture stop (51) there between. The rear optical sub-system (41 b) comprises a compound achromatic component (LR2, LR3) and a rear positive lens (LR4) disposed between said component and the image plane of the system in close proximity to the image plane. The rear positive lens (LR4) satisfies the following condition: fR ≥ 4f where f is the focal length of the total objective lens and fR is the focal length of the rear positive lens (LR4).
PCT/IL2008/001327 2007-10-30 2008-10-07 Objective lens for an endoscope of the retrofocus type having an achromat WO2009057085A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US98374907P 2007-10-30 2007-10-30
US60/983,749 2007-10-30

Publications (2)

Publication Number Publication Date
WO2009057085A2 WO2009057085A2 (en) 2009-05-07
WO2009057085A3 true WO2009057085A3 (en) 2009-06-18

Family

ID=40256846

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2008/001327 WO2009057085A2 (en) 2007-10-30 2008-10-07 Objective lens for an endoscope of the retrofocus type having an achromat

Country Status (1)

Country Link
WO (1) WO2009057085A2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403837A (en) * 1980-10-08 1983-09-13 Olympus Optical Co., Ltd. Objective for endoscopes
EP1683472A1 (en) * 2005-01-21 2006-07-26 Karl Storz Imaging Inc. Variable direction of view instrument with distal image sensor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403837A (en) * 1980-10-08 1983-09-13 Olympus Optical Co., Ltd. Objective for endoscopes
EP1683472A1 (en) * 2005-01-21 2006-07-26 Karl Storz Imaging Inc. Variable direction of view instrument with distal image sensor

Also Published As

Publication number Publication date
WO2009057085A2 (en) 2009-05-07

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