WO2008090438B1 - Apparatus for light control and method for light control - Google Patents
Apparatus for light control and method for light controlInfo
- Publication number
- WO2008090438B1 WO2008090438B1 PCT/IB2008/000129 IB2008000129W WO2008090438B1 WO 2008090438 B1 WO2008090438 B1 WO 2008090438B1 IB 2008000129 W IB2008000129 W IB 2008000129W WO 2008090438 B1 WO2008090438 B1 WO 2008090438B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light control
- thickness
- wall
- fluid
- control apparatus
- Prior art date
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
- G02F1/0121—Operation of devices; Circuit arrangements, not otherwise provided for in this subclass
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B2009/2411—Coloured fluid flow for light transmission control
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
Abstract
An apparatus for controlling a plurality of light cells comprises a microcomputer responsive to user commands. The user commands are used to adjust the electric field applied to the light cells containing light control fluid therein and to control the amount of light control fluid inside the light cells, wherein the transparent degree of the light control fluid is dependent on the applied electric field.
Claims
1. An apparatus for light control, comprising : means for receiving a command; means for containing a layer of fluid; means for altering an intensive material property of said fluid, that is, the ability of allowing or not allowing light passing therethrough;
means for adjusting the thickness of said layer in said means for containing ;
wherein the transparency of said apparatus being dependent on said thickness and wherein both said means for altering and means for adjusting causing the transparency of said apparatus to be changed, in accordance with said command.
2. An apparatus for light control as claimed by claim 1 , wherein said means for containing comprising a first wall and a second wall; and said fluid being confined within the spacing between said first wall and said second wall; the thickness of said spacing being controllable by a field force exerted on at least one of said walls and said field force being created by at least one energy source which being adjustable.
3. A method for use on a light control apparatus with a container containing a layer of fluid therein, comprising the steps of: receiving a command related to a desired overall transparency of said apparatus ;
adjusting the thickness of said layer inside said container, according to said command ; wherein the transparency of said apparatus being dependent on said thickness.
4. A method as claimed by claim 3, wherein said light control apparatus comprising a first wall and a second wall; and said fluid being confined within the spacing between said first wall and second wall; the thickness of said spacing being controllable by a field force exerted on at least one of said walls and said field force being created by at least one energy source which being adjustable.
5. A method as claimed by claim 3, further comprising the steps of: detecting environmental temperature; controlling transparency of said light control apparatus to a predetermined level if said environmental temperature detected reaches a predetermined value, so as to set the transparency of said light control apparatus to said predetermined level before said light control apparatus out of the temperature range for normal operation.
6. A light control apparatus with a fluid therein, comprising means for receiving a signal related to a demanded overall transparency of said apparatus; first wall with a first conductive layer; second wall with a second conductive layer; means for applying charges separately to said first and second conductive layers, for creating an electrostatic field force between said first and second conductive layers, thereby controlling the spacing between said first and second cell walls and also the thickness of said fluid confined within said spacing, in response to said signal ; wherein the overall transparency of said light control apparatus being dependent on said thickness.
7. A light control apparatus as claimed by claim 6, wherein an intensive material property of said fluid, that is, the ability of allowing or not allowing light passing therethrough, being controlled by said electrostatic field, and a change in electrostatic field which will decrease said thickness, will increase said ability of allowing light passing through and vice versa.
8. A light control apparatus with a layer of fluid therein, comprising means for receiving user actuation ; means for adjusting the thickness of said layer, according to said actuation ; wherein the transparency of said light control apparatus being dependent on said thickness.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0701077.0 | 2007-01-22 | ||
| GBGB0701077.0A GB0701077D0 (en) | 2007-01-22 | 2007-01-22 | Smart glass |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO2008090438A2 WO2008090438A2 (en) | 2008-07-31 |
| WO2008090438A3 WO2008090438A3 (en) | 2008-10-30 |
| WO2008090438B1 true WO2008090438B1 (en) | 2008-12-11 |
Family
ID=37846662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2008/000129 WO2008090438A2 (en) | 2007-01-22 | 2008-01-22 | Apparatus for light control and method for light control |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB0701077D0 (en) |
| WO (1) | WO2008090438A2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3023510B1 (en) * | 2014-07-11 | 2016-07-15 | Peugeot Citroen Automobiles Sa | PAVILION GLAZING FOR A MOTOR VEHICLE HAVING ACTIVE FILM AND PROTECTIVE MEANS TO EXTEND ITS LIFETIME |
| KR20190137833A (en) | 2017-04-20 | 2019-12-11 | 카디날 아이지 컴퍼니 | High Performance Privacy Window Structures |
| WO2019014613A1 (en) | 2017-07-13 | 2019-01-17 | Cardinal Ig Company | Electrical connection configurations for privacy glazing structures |
| MX2020004703A (en) | 2017-11-06 | 2021-03-02 | Cardinal Ig Co | Privacy glazing system with discrete electrical driver. |
| MX2020011871A (en) | 2018-05-09 | 2021-01-20 | Cardinal Ig Co | Electrically controllable privacy glazing with energy recapturing driver. |
| WO2020037185A1 (en) | 2018-08-17 | 2020-02-20 | Cardinal Ig Company | Privacy glazing structure with asymetrical pane offsets for electrical connection configurations |
| US11474385B1 (en) | 2018-12-02 | 2022-10-18 | Cardinal Ig Company | Electrically controllable privacy glazing with ultralow power consumption comprising a liquid crystal material having a light transmittance that varies in response to application of an electric field |
| EP3921152A1 (en) | 2019-02-08 | 2021-12-15 | Cardinal Ig Company | Low power driver for privacy glazing |
| US11325352B2 (en) | 2019-04-29 | 2022-05-10 | Cardinal Ig Company | Leakage current detection and control for one or more electrically controllable privacy glazing structures |
| WO2020223297A1 (en) | 2019-04-29 | 2020-11-05 | Cardinal Ig Company | Systems and methods for operating one or more electrically controllable privacy glazing structures |
| KR20220013370A (en) | 2019-04-29 | 2022-02-04 | 카디날 아이지 컴퍼니 | Parallax driving electrical control for multiple electrically controllable privacy glass structures |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5621915A (en) * | 1979-07-26 | 1981-02-28 | Taitetsuku:Kk | Car window |
| SE463053B (en) * | 1988-03-30 | 1990-10-01 | Saab Scania Ab | ARRANGEMENTS FOR A TAEK ELEMENT OF A AATMINSTONE PARTIAL TRANSPARENT BASIC MATERIAL |
| DE19719871A1 (en) * | 1997-05-12 | 1998-11-19 | Chen Xinfeng | Window or sliding roof with window-panes with intervening cavity |
| JP3890841B2 (en) * | 1999-12-24 | 2007-03-07 | 旭硝子株式会社 | LCD light control window for vehicles |
| US6643050B2 (en) * | 2000-06-13 | 2003-11-04 | Ppg Industries Ohio, Inc. | Colored electrochromic transparent window assemblies |
| JP2002067690A (en) * | 2000-08-31 | 2002-03-08 | Auto Network Gijutsu Kenkyusho:Kk | Liquid crystal visor |
| US20050185104A1 (en) * | 2002-07-25 | 2005-08-25 | Genewave | Optically active glazing |
| CN2693921Y (en) * | 2004-03-11 | 2005-04-20 | 龙江 | Liquid curtain type glass window |
-
2007
- 2007-01-22 GB GBGB0701077.0A patent/GB0701077D0/en not_active Ceased
-
2008
- 2008-01-22 WO PCT/IB2008/000129 patent/WO2008090438A2/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008090438A3 (en) | 2008-10-30 |
| WO2008090438A2 (en) | 2008-07-31 |
| GB0701077D0 (en) | 2007-02-28 |
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