IT946051B - optical cell - Google Patents

optical cell

Info

Publication number
IT946051B
IT946051B IT3098171A IT3098171A IT946051B IT 946051 B IT946051 B IT 946051B IT 3098171 A IT3098171 A IT 3098171A IT 3098171 A IT3098171 A IT 3098171A IT 946051 B IT946051 B IT 946051B
Authority
IT
Italy
Prior art keywords
optical cell
cell
optical
Prior art date
Application number
IT3098171A
Other languages
Italian (it)
Original Assignee
Hoffmann La Roche
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 CH1793770A priority Critical patent/CH532261A/en
Priority to CH526071A priority patent/CH564207A5/de
Application filed by Hoffmann La Roche filed Critical Hoffmann La Roche
Application granted granted Critical
Publication of IT946051B publication Critical patent/IT946051B/en

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/137Devices 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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139Devices 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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1396Devices 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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
IT3098171A 1970-12-04 1971-11-11 optical cell IT946051B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH1793770A CH532261A (en) 1970-12-04 1970-12-04 Light control cell
CH526071A CH564207A5 (en) 1971-04-13 1971-04-13

Publications (1)

Publication Number Publication Date
IT946051B true IT946051B (en) 1973-05-21

Family

ID=25697330

Family Applications (1)

Application Number Title Priority Date Filing Date
IT3098171A IT946051B (en) 1970-12-04 1971-11-11 optical cell

Country Status (11)

Country Link
BE (1) BE776192A (en)
CA (1) CA1010136A (en)
DD (1) DD97070A5 (en)
DE (1) DE2158563B2 (en)
DK (1) DK133714C (en)
ES (1) ES397630A1 (en)
FR (1) FR2117358A5 (en)
GB (1) GB1372868A (en)
IT (1) IT946051B (en)
NL (1) NL150579B (en)
SE (1) SE374965B (en)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS536857B2 (en) * 1972-08-16 1978-03-11
FR2198167B1 (en) * 1972-08-29 1976-05-21 Commissariat Energie Atomique
DE2366514C3 (en) * 1972-09-30 1985-10-10 Dai Nippon Printing Co., Ltd., Tokio/Tokyo, Jp
FR2220804B1 (en) * 1973-03-08 1976-10-08 Western Electric Co
DE2410527C3 (en) * 1973-03-08 1983-11-03 Casio Computer Co., Ltd., Tokyo, Jp
US3837729A (en) * 1973-05-14 1974-09-24 Hoffmann La Roche Liquid crystal display
CH564206A5 (en) * 1973-09-27 1975-07-15 Bbc Brown Boveri & Cie
GB1472247A (en) * 1974-02-21 1977-05-04 Secr Defence Liquid crystal devices
GB1478592A (en) * 1974-03-01 1977-07-06 Secr Defence Liquid crystal devices
CH573126A5 (en) * 1974-06-07 1976-02-27 Bbc Brown Boveri & Cie
DE2554226C3 (en) * 1975-12-03 1985-07-11 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V., 8000 Muenchen, De
DE2658568C2 (en) * 1975-12-25 1983-12-22 Sharp K.K., Osaka, Jp
FR2356173A1 (en) * 1976-06-21 1978-01-20 Gen Electric A method for improving the fall time of a display device has nematic liquid crystal composition helically
DE2706375C3 (en) * 1977-02-15 1982-08-26 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
US4231068A (en) * 1977-06-15 1980-10-28 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Optical screens
DE2735195C2 (en) * 1977-08-04 1982-05-06 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
DE2849381C3 (en) * 1978-11-14 1981-04-30 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
DE2910779C3 (en) * 1979-03-19 1981-11-19 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
FR2452122B1 (en) * 1979-03-23 1982-10-22 Thomson Csf
DE3107520A1 (en) * 1981-02-27 1982-09-16 Siemens Ag "Process for production of orientation layers for fluessigkristalldisplays and orientation layers having fluessigkristalldisplays"
US4435047A (en) * 1981-09-16 1984-03-06 Manchester R & D Partnership Encapsulated liquid crystal and method
DE3138518C1 (en) * 1981-09-28 1983-02-24 Siemens Ag Field effect liquid crystal cell
US4523848A (en) * 1981-10-01 1985-06-18 National Research Development Corporation Polariscope
US4596446B2 (en) * 1982-06-29 1997-03-18 Secr Defence Brit Liquid crystal devices with particular cholestric pitch-cell thickness ratio
FR2558025B1 (en) * 1984-01-10 1987-05-22 Thomson Csf connection system for simultaneous bidirectional transmission optical fiber
JPS61210324A (en) * 1985-03-15 1986-09-18 Hitachi Ltd Liquid crystal display element
JPS6421416A (en) * 1987-07-17 1989-01-24 Hitachi Ltd Liquid crystal display element
DE3918828C2 (en) * 1989-06-09 1997-12-18 Aeg Ges Moderne Inf Sys Mbh A liquid crystal display device
DE4011116A1 (en) * 1990-04-06 1991-10-10 Nokia Unterhaltungselektronik A method for determining the angle of attack of liquid crystal molecules of a liquid crystal cell
DE4212744C2 (en) * 1992-04-16 1994-10-13 Merck Patent Gmbh TN cell with d. -DELTA n from 0.15 to 0.70 mum
JP3753440B2 (en) * 1992-05-07 2006-03-08 セイコーエプソン株式会社 Method for driving a liquid crystal display device and a liquid crystal display device
JP3634390B2 (en) * 1992-07-16 2005-03-30 セイコーエプソン株式会社 Liquid crystal electro-optical element
DE4416298A1 (en) * 1994-05-09 1995-11-16 Abb Research Ltd Method and apparatus for optical determination of a physical quantity
DE69526505D1 (en) 1995-05-17 2002-05-29 Seiko Epson Corp Liquid crystal display device and process and control circuitry to control their
US8820937B2 (en) 2010-08-17 2014-09-02 Lc-Tec Displays Ab Optical polarization state modulator assembly for use in stereoscopic three-dimensional image projection system
US8023052B1 (en) 2010-08-17 2011-09-20 Lc-Tec Displays Ab High-speed liquid crystal polarization modulator
US8184215B2 (en) 2010-08-17 2012-05-22 Lc-Tec Displays Ab High-speed liquid crystal polarization modulator
DE102012221527A1 (en) 2012-11-26 2014-06-12 Heine Optotechnik Gmbh & Co Kg Optical diagnostic tool, particularly dermatoscope for investigating examination area of patient, has first polarizing filter unit downstream in illumination beam path of illumination unit in illuminating direction

Also Published As

Publication number Publication date
CA1010136A1 (en)
SE374965B (en) 1975-03-24
DE2158563A1 (en) 1972-06-29
CA1010136A (en) 1977-05-10
BE776192A (en) 1972-06-05
NL7115838A (en) 1972-06-06
DE2158563B2 (en) 1975-10-23
NL150579B (en) 1976-08-16
GB1372868A (en) 1974-11-06
DD97070A5 (en) 1973-04-12
FR2117358A5 (en) 1972-07-21
BE776192A1 (en)
DK133714B (en) 1976-07-05
DK133714C (en) 1988-05-02
ES397630A1 (en) 1975-03-16

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