CA965862A - Light control device - Google Patents

Light control device

Info

Publication number: CA965862A
Authority: CA; Canada
Prior art keywords: control device; light control; light; control
Prior art date: 1971-04-12
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

CA139,420A

Other versions

CA139420S (en

Inventor

Paul Rosenberg

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.)

Research Frontiers Inc

Original Assignee

Research Frontiers Inc

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.)

1971-04-12

Filing date

1972-04-11

Publication date

1975-04-08

1972-04-11 Application filed by Research Frontiers Inc filed Critical Research Frontiers Inc

1975-04-08 Application granted granted Critical

1975-04-08 Publication of CA965862A publication Critical patent/CA965862A/en

Status Expired legal-status Critical Current

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
- G02F1/17—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 variable-absorption elements not provided for in groups G02F1/015 - G02F1/169
- G02F1/172—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 variable-absorption elements not provided for in groups G02F1/015 - G02F1/169 based on a suspension of orientable dipolar particles, e.g. suspended particles displays

CA139,420A 1971-04-12 1972-04-11 Light control device Expired CA965862A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US13320571A	1971-04-12	1971-04-12

Publications (1)

Publication Number	Publication Date
CA965862A true CA965862A (en)	1975-04-08

Family

ID=22457478

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA139,420A Expired CA965862A (en)	1971-04-12	1972-04-11	Light control device

Country Status (10)

Country	Link
US (1)	US3743382A (en)
JP (1)	JPS5632609B1 (en)
CA (1)	CA965862A (en)
DE (1)	DE2217248A1 (en)
FR (1)	FR2132880B1 (en)
GB (1)	GB1385505A (en)
IT (1)	IT957617B (en)
NL (1)	NL7204866A (en)
SE (1)	SE377620B (en)
ZA (1)	ZA722448B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4739396C1 (en) *	1970-12-28	2002-07-09	Gilbert P Hyatt	Projection display system
US4435732A (en)	1973-06-04	1984-03-06	Hyatt Gilbert P	Electro-optical illumination control system
US5398041A (en) *	1970-12-28	1995-03-14	Hyatt; Gilbert P.	Colored liquid crystal display having cooling
US4672457A (en) *	1970-12-28	1987-06-09	Hyatt Gilbert P	Scanner system
US5432526A (en) *	1970-12-28	1995-07-11	Hyatt; Gilbert P.	Liquid crystal display having conductive cooling
US4164365A (en) *	1972-07-31	1979-08-14	Research Frontiers Incorporated	Light valve for controlling the transmission of radiation comprising a cell and a stabilized liquid suspension
US4078856A (en) *	1976-03-17	1978-03-14	Research Frontiers Incorporated	Light valve
US4273422A (en) *	1978-08-10	1981-06-16	Research Frontiers Incorporated	Light valve containing liquid suspension including polymer stabilizing system
US4294518A (en) *	1978-11-30	1981-10-13	The Bendix Corporation	Dual mode light valve display
DE2910952A1 (en) *	1979-03-20	1980-12-11	Siemens Ag	DEVICE FOR IMPROVING THE VISIBILITY OF PASSIVE DISPLAYS
DE2911087A1 (en) *	1979-03-21	1980-09-25	Siemens Ag	PRESENTATION METHOD AND DISPLAY DEVICE FOR CARRYING OUT THIS METHOD
US4358743A (en) *	1980-07-09	1982-11-09	Ford Motor Company	Light modulator
US4359698A (en) *	1980-07-09	1982-11-16	Ford Motor Company	Reflecting type light modulator
US4639078A (en) *	1984-10-05	1987-01-27	Rockwell International Corporation	Optical fiber attenuator and method of fabrication
US5150257A (en) *	1991-07-29	1992-09-22	Eaton Corporation	High reliability, low intensity back lit SR and NVGC indicator assembly
EP0709713A3 (en) *	1994-10-31	1997-03-26	Fujikura Ltd	Electrically controlled color display device and method
US6459418B1 (en) *	1995-07-20	2002-10-01	E Ink Corporation	Displays combining active and non-active inks
DE19907334A1 (en) *	1999-02-20	2000-08-24	Bayer Ag	Electrically controllable aperture, for image recording equipment, comprises electro-optical material-filled cell with non-structured facing transparent electrodes electrically contacted along peripheral sealing frame
BR0203010A (en) *	2002-07-25	2004-06-01	Luiz Antonio Junior Herbst	Adjustable electromagnetic wave filter
CN101002138A (en) *	2004-08-09	2007-07-18	皇家飞利浦电子股份有限公司	Electro-optical suspended particle cell comprising two kinds of anisometric particles with different optical and electromechanical properties
TW200835995A (en) *	2006-10-10	2008-09-01	Cbrite Inc	Electro-optic display
US8501272B2 (en)	2006-12-22	2013-08-06	Cospheric Llc	Hemispherical coating method for micro-elements
US20100035377A1 (en) *	2006-12-22	2010-02-11	Cbrite Inc.	Transfer Coating Method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR20394E (en) *	1913-07-15	1917-11-28	Auguste Victor Bollard	Walls intended to oppose horizontal thrusts of solid masses
US1963496A (en) *	1933-01-16	1934-06-19	Edwin H Land	Light valve
US3257903A (en) *	1960-11-21	1966-06-28	Alvin M Marks	Electrically responsive light controlling devices employing suspended dipole particles and shear forces
US3341274A (en) *	1964-02-04	1967-09-12	Alvin M Marks	Electrically responsive light controlling device employing suspended dipole particles in a plastic film
US3322482A (en) *	1965-04-12	1967-05-30	James V Harmon	Panel for controlling light transmission by the selective orientation of free particles
FR1476194A (en) *	1965-04-26	1967-04-07	Rca Corp	Method and devices for testing the properties of substances mixed with liquid crystals
FR1536032A (en) *	1967-09-06	1968-08-09		Electrically sensitive light adjuster
US3612657A (en) *	1970-06-22	1971-10-12	Zenith Radio Corp	Light-intensity control device utilizing oriented particles suspended in a gel

1971
- 1971-04-12 US US00133205A patent/US3743382A/en not_active Expired - Lifetime
1972
- 1972-04-11 DE DE19722217248 patent/DE2217248A1/en not_active Ceased
- 1972-04-11 IT IT49516/72A patent/IT957617B/en active
- 1972-04-11 ZA ZA722448A patent/ZA722448B/en unknown
- 1972-04-11 CA CA139,420A patent/CA965862A/en not_active Expired
- 1972-04-11 SE SE7204662A patent/SE377620B/xx unknown
- 1972-04-12 GB GB1697572A patent/GB1385505A/en not_active Expired
- 1972-04-12 NL NL7204866A patent/NL7204866A/xx not_active Application Discontinuation
- 1972-04-12 JP JP3615272A patent/JPS5632609B1/ja active Pending
- 1972-04-12 FR FR7212829A patent/FR2132880B1/fr not_active Expired

Also Published As

Publication number	Publication date
SE377620B (en)	1975-07-14
US3743382A (en)	1973-07-03
FR2132880B1 (en)	1976-08-06
IT957617B (en)	1973-10-20
NL7204866A (en)	1972-10-16
JPS5632609B1 (en)	1981-07-29
FR2132880A1 (en)	1972-11-24
DE2217248A1 (en)	1972-11-30
ZA722448B (en)	1973-02-28
GB1385505A (en)	1975-02-26

Publication	Publication Date	Title
CA965862A (en)	1975-04-08	Light control device
CA982270A (en)	1976-01-20	Double unit control device
AU474268B2 (en)	1976-07-15	Optoelectronic device
AU3710471A (en)	1973-06-28	Optical control system
CA941485A (en)	1974-02-05	Level control means
CA987282A (en)	1976-04-13	Light
AU464684B2 (en)	1975-09-04	Daylight-developing device
CA972860A (en)	1975-08-12	Control device
AU3880272A (en)	1973-08-16	Improved control device
AU472992B2 (en)	1976-06-10	Control device
SU637974A1 (en)	1978-12-15	Contrast control
CA990860A (en)	1976-06-08	Polychromal light pattern device
CA887985A (en)	1971-12-14	Control device
CA885653A (en)	1971-11-09	Control device
CA919721A (en)	1973-01-23	Unpredictable-return ball-feeding device
CA864106A (en)	1971-02-16	Control apparatus
CA879470A (en)	1971-08-31	Unitary control device
AU472708B2 (en)	1976-06-03	Control devices
CA879891A (en)	1971-08-31	Lighting device
CA884556A (en)	1971-10-26	Photoelectric control device
CA865838A (en)	1971-03-09	Illumination control system
CA978630A (en)	1975-11-25	Light sensing device
CA877605A (en)	1971-08-10	Lens retaining device
AU448743B2 (en)		Cable control retraction-lockup device
CA868633A (en)	1971-04-13	Learning device