CA1028537A - Filtre optique a cristal liquide - Google Patents

Filtre optique a cristal liquide

Info

Publication number: CA1028537A
Authority: CA; Canada
Prior art keywords: optical filter; liquid crystalline; crystalline optical; liquid; filter
Prior art date: 1974-04-29
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

CA221,451A

Other languages

English (en)

Other versions

CA221451S (en

Inventor

Franklin D. Saeva

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.)

Xerox Corp

Original Assignee

Xerox Corp

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.)

1974-04-29

Filing date

1975-03-04

Publication date

1978-03-28

1975-03-04 Application filed by Xerox Corp filed Critical Xerox Corp

1978-03-28 Application granted granted Critical

1978-03-28 Publication of CA1028537A publication Critical patent/CA1028537A/fr

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
- G02F1/13—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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13725—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 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 guest-host interaction
- 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
- C09K19/36—Steroidal liquid crystal compounds
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3016—Polarising elements involving passive liquid crystal elements
- 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
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K2019/523—Organic solid particles
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S359/00—Optical: systems and elements
- Y10S359/90—Methods

Landscapes

Chemical & Material Sciences (AREA)
Physics & Mathematics (AREA)
Crystallography & Structural Chemistry (AREA)
Nonlinear Science (AREA)
General Physics & Mathematics (AREA)
Optics & Photonics (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Organic Chemistry (AREA)
Liquid Crystal (AREA)
Liquid Crystal Substances (AREA)

CA221,451A 1974-04-29 1975-03-04 Filtre optique a cristal liquide Expired CA1028537A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US05/465,052 US3942871A (en)	1974-04-29	1974-04-29	Liquid crystalline optical filter

Publications (1)

Publication Number	Publication Date
CA1028537A true CA1028537A (fr)	1978-03-28

Family

ID=23846314

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA221,451A Expired CA1028537A (fr)	1974-04-29	1975-03-04	Filtre optique a cristal liquide

Country Status (5)

Country	Link
US (1)	US3942871A (fr)
JP (1)	JPS50147753A (fr)
CA (1)	CA1028537A (fr)
FR (1)	FR2269100A1 (fr)
NL (1)	NL7503508A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS6143702A (ja) *	1984-08-08	1986-03-03	Matsushita Electric Ind Co Ltd	光学フイルタおよびその製造法
JPS60191203A (ja) *	1984-03-12	1985-09-28	Matsushita Electric Ind Co Ltd	光学フイルタ
US5016985A (en) *	1988-06-24	1991-05-21	Kaiser Aerospace & Electronics Corporation	Infrared filter using cholesteric liquids
US5050966A (en) *	1988-07-06	1991-09-24	Kaiser Aerospace & Electronics Corporation	Optical combiner collimating apparatus
EP0518019A1 (fr) *	1991-06-13	1992-12-16	Corning Incorporated	Lame de retardement biréfringente en verre
DE4419239A1 (de) *	1994-06-01	1995-12-07	Consortium Elektrochem Ind	Optische Elemente mit farb- und polarisationsselektiver Reflexion enthaltend LC-Pigmente sowie Herstellung dieser Elemente
TWI645962B (zh) *	2013-08-09	2019-01-01	住友化學股份有限公司	光學異向性薄片
WO2017137972A1 (fr) *	2016-02-14	2017-08-17	Ci Systems (Israel) Ltd.	Dispositif d'imagerie et détection infrarouge sans pièces mobiles

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3697150A (en) *	1971-01-06	1972-10-10	Xerox Corp	Electro-optic systems in which an electrophoretic-like or dipolar material is dispersed throughout a liquid crystal to reduce the turn-off time
US3711181A (en) *	1971-03-05	1973-01-16	Xerox Corp	Optical notch filter
US3780307A (en) *	1971-10-22	1973-12-18	Xerox Corp	Liquid crystalline compositions having induced optical activity

1974
- 1974-04-29 US US05/465,052 patent/US3942871A/en not_active Expired - Lifetime
1975
- 1975-03-04 CA CA221,451A patent/CA1028537A/fr not_active Expired
- 1975-03-24 NL NL7503508A patent/NL7503508A/xx unknown
- 1975-04-22 JP JP50049017A patent/JPS50147753A/ja active Pending
- 1975-04-29 FR FR7513451A patent/FR2269100A1/fr not_active Withdrawn

Also Published As

Publication number	Publication date
US3942871A (en)	1976-03-09
NL7503508A (nl)	1975-06-30
FR2269100A1 (fr)	1975-11-21
JPS50147753A (fr)	1975-11-27

Publication	Publication Date	Title
CA1031540A (fr)	1978-05-23	Courroie pour lunettes
CA959686A (en)	1974-12-24	Optical notch filter
AU502084B2 (en)	1979-07-12	Filter element
CA1024456A (fr)	1978-01-17	Filtre electrostatique
CA971657A (en)	1975-07-22	Ferroelectric-type optical filter
CA1022474A (fr)	1977-12-13	Filtres jumeles
AU497890B2 (en)	1979-01-18	Fluid filter
AU499754B2 (en)	1979-05-03	Water filter device
AU507714B2 (en)	1980-02-28	Optical metronome
CA1025370A (fr)	1978-01-31	Filtre
CA1028537A (fr)	1978-03-28	Filtre optique a cristal liquide
CA1035288A (fr)	1978-07-25	Crepine
CA1034514A (fr)	1978-07-11	Systeme de filtration d'un fluide
AU498415B2 (en)	1979-03-15	Fourth order active filter
CA1029995A (fr)	1978-04-25	Filtre optique a cristal liquide
IL47726A0 (en)	1975-10-15	Multi-wavelength optical filter
CA1034907A (fr)	1978-07-18	Bouchon filtrant
AU502009B2 (en)	1979-07-12	Crystal filter
AU497738B2 (en)	1979-01-04	Filter
AU498082B2 (en)	1979-02-08	Filter
SU608869A1 (ru)	1978-05-30	Фильтрующа центрифуга
SU682247A1 (ru)	1979-08-30	Фильтр дл очистки жидкости
AU483820B2 (en)	1976-01-08	Filter
CA1032086A (fr)	1978-05-30	Filtre d'huile
CA1028538A (fr)	1978-03-28	Modulation de lumiere par cristal liquide