CA971259A - Electro-optical light modulation cell - Google Patents

Electro-optical light modulation cell

Info

Publication number: CA971259A
Authority: CA; Canada
Prior art keywords: electro; light modulation; optical light; modulation cell; cell
Prior art date: 1971-07-16
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

Application number

CA145,056A

Other versions

CA145056S (en

Inventor

Martin Schadt

Wolfgang Helfrich

Hanspeter Scherrer

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.)

F Hoffmann La Roche AG

Original Assignee

F Hoffmann La Roche AG

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.)

1971-07-16

Filing date

1972-06-19

Publication date

1975-07-15

1972-06-19 Application filed by F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG

1975-07-15 Application granted granted Critical

1975-07-15 Publication of CA971259A publication Critical patent/CA971259A/en

Status Expired legal-status Critical Current

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
- G02F1/07—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 electro-optical liquids exhibiting Kerr effect
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/22—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and nitrogen atoms as chain links, e.g. Schiff bases

Landscapes

Chemical & Material Sciences (AREA)
Physics & Mathematics (AREA)
Nonlinear Science (AREA)
Crystallography & Structural Chemistry (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Organic Chemistry (AREA)
General Physics & Mathematics (AREA)
Optics & Photonics (AREA)
Liquid Crystal (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

CA145,056A 1971-07-16 1972-06-19 Electro-optical light modulation cell Expired CA971259A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CH1048271A CH540500A (en)	1971-07-16	1971-07-16	Electro-optical light control cell

Publications (1)

Publication Number	Publication Date
CA971259A true CA971259A (en)	1975-07-15

Family

ID=4363711

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
CA145,056A Expired CA971259A (en)	1971-07-16	1972-06-19	Electro-optical light modulation cell
CA147,037A Expired CA971260A (en)	1971-07-16	1972-07-13	Electro-optical light modulation cell

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
CA147,037A Expired CA971260A (en)	1971-07-16	1972-07-13	Electro-optical light modulation cell

Country Status (7)

Country	Link
CA (2)	CA971259A (en)
CH (1)	CH540500A (en)
DD (1)	DD99449A5 (en)
DE (1)	DE2234522A1 (en)
FR (1)	FR2146277B1 (en)
GB (1)	GB1395795A (en)
NL (1)	NL7209780A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4058477A (en) *	1972-02-23	1977-11-15	Hoffmann-La Roche Inc.	Liquid crystal Schiffs bases
US4058478A (en) *	1972-02-23	1977-11-15	Hoffmann-La Roche Inc.	Liquid crystal esters
CH577178A5 (en) *	1973-04-04	1976-06-30	Hoffmann La Roche
US4061587A (en) *	1973-12-17	1977-12-06	Hoffmann-La Roche Inc.	Liquid crystalline cinnamic acid esters
GB8610681D0 (en) *	1986-05-01	1986-06-04	Secr Defence	Electro-optical devices
DE10241301A1 (en) *	2002-09-04	2004-03-18	Merck Patent Gmbh	Electrooptic light control element and display and medium for television and computer screens has temperature driven control mechanism

1971
- 1971-07-16 CH CH1048271A patent/CH540500A/en not_active IP Right Cessation
1972
- 1972-06-19 CA CA145,056A patent/CA971259A/en not_active Expired
- 1972-07-05 GB GB2898772A patent/GB1395795A/en not_active Expired
- 1972-07-13 FR FR7225444A patent/FR2146277B1/fr not_active Expired
- 1972-07-13 CA CA147,037A patent/CA971260A/en not_active Expired
- 1972-07-13 DE DE19722234522 patent/DE2234522A1/en active Pending
- 1972-07-14 NL NL7209780A patent/NL7209780A/xx unknown
- 1972-07-17 DD DD16446672A patent/DD99449A5/xx unknown

Also Published As

Publication number	Publication date
DD99449A5 (en)	1973-08-05
FR2146277B1 (en)	1976-08-06
CA971260A (en)	1975-07-15
NL7209780A (en)	1973-01-18
FR2146277A1 (en)	1973-03-02
GB1395795A (en)	1975-05-29
CH540500A (en)	1973-08-15
DE2234522A1 (en)	1973-01-25

Publication	Publication Date	Title
CA968880A (en)	1975-06-03	Optical modulators
CA1007748A (en)	1977-03-29	Electro-optical reader
CA968447A (en)	1975-05-27	Electro-optic shutter
CA1010136A (en)	1977-05-10	Liquid crystal cell having controllable optical activity
CA998154A (en)	1976-10-05	Display devices utilizing liquid crystal light modulation
CA975053A (en)	1975-09-23	Self contained electrochemical heat source
CA1023543A (en)	1978-01-03	Electro-optical display
CA983900A (en)	1976-02-17	Disclosing light
CA955305A (en)	1974-09-24	Light modulation system
CA1003204A (en)	1977-01-11	Liquid crystal cell
CA968324A (en)	1975-05-27	Electro-optical recorder
CA971260A (en)	1975-07-15	Electro-optical light modulation cell
CA1015478A (en)	1977-08-09	Liquid crystal cell for producing colored light
CA957756A (en)	1974-11-12	Liquid crystal cells
CA973958A (en)	1975-09-02	Electro-optical modulation apparatus
CA987282A (en)	1976-04-13	Light
CA816922A (en)	1969-07-01	Electro-optical light modulation means
CA824842A (en)	1969-10-07	Electro-optic light modulator
CA845882A (en)	1970-06-30	Light modulator
CA819939A (en)	1969-08-05	Light modulator
AU464761B2 (en)	1975-09-04	Modulation arrangement
CA804232A (en)	1969-01-14	Optical modulator
GB1442636A (en)	1976-07-14	Optical intensity modulation devices
CA876919A (en)	1971-07-27	Generateur de bandes laterales de modulation
CA1028538A (en)	1978-03-28	Liquid crystalline light modulation