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SG11201909422UA - Temperature independent lcd polarization rotators - Google Patents

Temperature independent lcd polarization rotators

Info

Publication number
SG11201909422UA
SG11201909422UA SG11201909422UA SG11201909422UA SG 11201909422U A SG11201909422U A SG 11201909422UA SG 11201909422U A SG11201909422U A SG 11201909422UA SG 11201909422U A SG11201909422U A SG 11201909422UA
Authority
SG
Singapore
Prior art keywords
singapore
international
lcd
rotator
capacitance value
Prior art date
Application number
Inventor
Euk Jin Alexander Ling
Rakhitha Chandrasekara
Kadir Durak
Original Assignee
Nat Univ Singapore
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 Nat Univ Singapore filed Critical Nat Univ Singapore
Publication of SG11201909422UA publication Critical patent/SG11201909422UA/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/0136—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  for the control of polarisation, e.g. state of polarisation [SOP] control, polarisation scrambling, TE-TM mode conversion or separation
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/21—Thermal instability, i.e. DC drift, of an optical modulator; Arrangements or methods for the reduction thereof

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) CORRECTED VERSION (19) World Intellectual Property Organization International Bureau (43) International Publication Date 11111111111110111111111111111111111110 1011101111011101111111111111141101111101111 (10) International Publication Number WO 2018/190774 A9 18 October 2018 (18.10.2018) MP() I P CT (51) International Patent Classification: GO2F 1/133 (2006.01) (21) International Application Number: PCT/SG2018/050182 (22) International Filing Date: 10 April 2018 (10.04.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 10201702947P 10 April 2017 (10.04.2017) SG (71) Applicant: NATIONAL UNIVERSITY OF SINGA- PORE [SG/SG]; 21 Lower Kent Ridge Road, Singapore 119077 (SG). (72) Inventors: LING, Euk Jin Alexander; c/o National Uni- versity of Singapore, Centre for Quantum Technologies, 21 Lower Kent Ridge Road, Singapore 119077 (SG). CHAN- DRASEKARA, Rakhitha; c/o National University of Sin- gapore, Centre for Quantum Technologies, 21 Lower Kent Ridge Road, Singapore 119077 (SG). DURAK, Kadir; c/o National University of Singapore, Centre for Quan- tum Technologies, 21 Lower Kent Ridge Road, Singapore 119077 (SG). (74) Agent: VIERING, JENTSCHURA & PARTNER LLP; P.O. Box 1088, Rochor Post Office, Rochor Road, Singa- pore 911833 (SG). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, 1E, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). (54) Title: TEMPERATURE INDEPENDENT LCD POLARIZATION ROTATORS 800 tracking a capacitance value of the LCD rotator controlling a driver setting to the LCD rotator based on the tracked capacitance value to achieve temperature independent operation Figure 8 (57) : A method and circuit for operating a liquid crystal device, LCD, based polarisation rotator. The method comprises the steps of tracking a capacitance value of the LCD rotator; and controlling a driver setting to the LCD rotator based on the tracked capacitance value to achieve temperature independent operation. [Continued on next page] 802 804 WO 2018/190774 A9 IVIIIIIIIIIIIH111111VIII11111VIII111I1II111VIIIVIIIVIIIVIIIVIIIIIII111110IIIII10IIII Published: with international search report (Art. 21(3)) with information concerning authorization of rectification of an obvious mistake under Rule 91.3 (b) (Rule 48.2(i)) in black and white; the international application as filed contained color or greyscale and is available for download from PATENTSCOPE (48) Date of publication of this corrected version: 02 May 2019 (02.05.2019) (15) Information about Correction: see Notice of 02 May 2019 (02.05.2019)
SG11201909422U 2017-04-10 2018-04-10 Temperature independent lcd polarization rotators SG11201909422UA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG10201702947P 2017-04-10
PCT/SG2018/050182 WO2018190774A1 (en) 2017-04-10 2018-04-10 Temperature independent lcd polarization rotators

Publications (1)

Publication Number Publication Date
SG11201909422UA true SG11201909422UA (en) 2019-11-28

Family

ID=63792790

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11201909422U SG11201909422UA (en) 2017-04-10 2018-04-10 Temperature independent lcd polarization rotators

Country Status (3)

Country Link
US (1) US11143901B2 (en)
SG (1) SG11201909422UA (en)
WO (1) WO2018190774A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2861538D1 (en) * 1977-12-20 1982-02-25 Secr Defence Brit Liquid crystal displays
US4390874A (en) * 1981-01-09 1983-06-28 Texas Instruments Incorporated Liquid crystal display system having improved temperature compensation
US5247378A (en) * 1991-06-07 1993-09-21 Peter Miller Optical retarder having means for determining the retardance of the cell corresponding to the sensed capacitance thereof
US7525712B2 (en) * 2005-09-29 2009-04-28 Teledyne Scientific & Imaging, Llc Broad spectral range polarization rotator
CN102967554B (en) 2012-10-29 2016-12-21 广东工业大学 A kind of dual pathways, the fluorescence anisotropy microscopic imaging device of monochromatic light line structure and method

Also Published As

Publication number Publication date
US20200124907A1 (en) 2020-04-23
US11143901B2 (en) 2021-10-12
WO2018190774A1 (en) 2018-10-18
WO2018190774A9 (en) 2019-05-02

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