IN2012DE01076A - - Google Patents

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Publication number
IN2012DE01076A
IN2012DE01076A IN1076DE2012A IN2012DE01076A IN 2012DE01076 A IN2012DE01076 A IN 2012DE01076A IN 1076DE2012 A IN1076DE2012 A IN 1076DE2012A IN 2012DE01076 A IN2012DE01076 A IN 2012DE01076A
Authority
IN
India
Prior art keywords
optical system
target
linearly polarized
polarized light
respect
Prior art date
Application number
Inventor
Tao Li
Guiju Song
Kevin George Harding
Dongmin Yang
Zirong Zhai
Jie Han
Gil Abramovich
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of IN2012DE01076A publication Critical patent/IN2012DE01076A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8806—Specially adapted optical and illumination features
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8803—Visual inspection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
    • 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
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • 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
    • G02B27/0075—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for altering, e.g. increasing, the depth of field or depth of focus
    • 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
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/21—Polarisation-affecting properties

Abstract

An optical system is provided for visually inspecting a target having a variable position with respect to the optical system. The optical system includes a polarizer, a light modulating element, and a lens group comprising at least one birefringent element. The polarizer converts an incident light reflected from the target into linearly polarized light. The light modulating element modulates a polarization state of the linearly polarized light in response to control signals. The birefringent element refracts the modulated linearly polarized light with a first polarization state under a first refraction index to enable inspection of the target at a first object position with respect to the optical system. The birefringent element further refracts the modulated linearly polarized light with a second polarization state under a second refraction index to enable inspection of the target at a second object position with respect to the optical system.
IN1076DE2012 2011-04-18 2012-04-09 IN2012DE01076A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110096267.1A CN102749332B (en) 2011-04-18 2011-04-18 Optical system and optical detection apparatus and detection method

Publications (1)

Publication Number Publication Date
IN2012DE01076A true IN2012DE01076A (en) 2015-07-31

Family

ID=46298221

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1076DE2012 IN2012DE01076A (en) 2011-04-18 2012-04-09

Country Status (4)

Country Link
US (1) US9188543B2 (en)
EP (1) EP2515100A1 (en)
CN (1) CN102749332B (en)
IN (1) IN2012DE01076A (en)

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CN103558188B (en) * 2013-07-11 2016-03-02 福建华映显示科技有限公司 Arrangement for detecting and method for detecting
CN103607542B (en) * 2013-11-30 2017-04-12 深圳市金立通信设备有限公司 Picture processing method and device and photographic equipment
EP3084376B1 (en) * 2013-12-17 2019-01-16 Picometrix, LLC System for transmitting and receiving electromagnetic radiation
CN105467714B (en) * 2014-09-05 2018-11-30 深圳超多维科技有限公司 Liquid crystal lens imaging device and liquid crystal lens imaging method
US10061129B2 (en) * 2015-03-15 2018-08-28 Kessler Optics and Photonics Solutions Ltd. Birefringent ocular for augmented reality imaging
EP3322975A4 (en) * 2015-07-14 2019-03-13 Synergx Technologies Inc. Optical inspection system for transparent material
US9781316B2 (en) * 2015-12-14 2017-10-03 Htc Corporation Multi-focal length range image capturing device
US10153838B1 (en) * 2016-12-28 2018-12-11 Facebook, Inc. Quad tracker with birefringent optics
CN111339822B (en) * 2017-07-17 2023-06-30 Oppo广东移动通信有限公司 Living body detection method and related products
TWI648524B (en) * 2017-10-03 2019-01-21 財團法人工業技術研究院 Cutting multilayer materials apparatus and method thereof
JP7208253B2 (en) 2018-09-28 2023-01-18 ｉ－ＰＲＯ株式会社 Endoscope
CN110161596B (en) * 2019-05-20 2021-07-23 河北工业大学 Device and method for manufacturing variable-focus liquid microlens
CN110530821B (en) * 2019-09-16 2021-02-12 中国科学院福建物质结构研究所 Measuring device and measuring method for refractive index of optical material
CN117055211B (en) * 2023-08-30 2024-03-22 之江实验室 Design method of optical encryption structure and near-far field multi-polarization optical encryption system

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JPS61160714A (en) * 1985-01-09 1986-07-21 Canon Inc Vari-focal lens
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Also Published As

Publication number Publication date
US9188543B2 (en) 2015-11-17
EP2515100A1 (en) 2012-10-24
US20130271763A1 (en) 2013-10-17
CN102749332B (en) 2015-08-26
CN102749332A (en) 2012-10-24

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