WO2006051306A1 - A method for reducing unwanted light - Google Patents

A method for reducing unwanted light Download PDF

Info

Publication number
WO2006051306A1
WO2006051306A1 PCT/GB2005/004350 GB2005004350W WO2006051306A1 WO 2006051306 A1 WO2006051306 A1 WO 2006051306A1 GB 2005004350 W GB2005004350 W GB 2005004350W WO 2006051306 A1 WO2006051306 A1 WO 2006051306A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light source
shuttering
display
display system
Prior art date
Application number
PCT/GB2005/004350
Other languages
French (fr)
Inventor
Patrick Evans
Original Assignee
Patrick Evans
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
Application filed by Patrick Evans filed Critical Patrick Evans
Publication of WO2006051306A1 publication Critical patent/WO2006051306A1/en

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 
    • G02F1/13—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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
    • G02B26/04—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light by periodically varying the intensity of light, e.g. using choppers
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
    • G02C7/101—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having an electro-optical light valve
    • 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N2013/40—Privacy aspects, i.e. devices showing different images to different viewers, the images not being viewpoints of the same scene
    • H04N2013/403—Privacy aspects, i.e. devices showing different images to different viewers, the images not being viewpoints of the same scene the images being monoscopic

Abstract

A light source (5) for a computer or television display (7), for example an LCD backlight, is arranged so as to be capable of being switched on or off by a control system (4). This switching is synchronised with a vision shuttering system (2) which is made alternately either transparent or opaque, and is done at a rapid rate at which human vision perceives a continuous rather than intermittent view. The light source is controlled so as to be on when the shuttering system is transparent, and off when it is opaque. The effective ratio, averaged over time, between light from the synchronised light source and light from other sources (e.g. glare from reflected sunlight), can thus be improved without increasing the (average) light power which the light is required to generate. Shuttering systems include, for example, LCD shutter glasses or goggles.

Description

Description (A method for reducing unwanted light)
Situations commonly occur when an observer has difficulty perceiving the desired elements of a visual scene because bis view is overwhelmed by unwanted light.
An example of such a situation occurs when bright sunlight reflects from the surface of a computer monitor or television screen and makes the light emanating from within the monitor, which is of much lower brightness than the reflected sunlight, difficult or impossible to see.
It is sometimes possible to improve the quality of the observer's view by increasing the power of the light coming from the desired elements of the scene. This might be brought about by, for example, increasing the light output from the television monitor
It is, however, often the case that simply increasing light power by the required amount might be undesirable or impossible. An increase in light output must very often be paid for by an increased energy requirement, increased heat output, or by decreased lifetime of some part of the light-producing system.
It is, however, possible to greatly improve the ratio between desired and undesired light, as perceived by the human eye, in such a way as to largely avoid these penalties. This is made possible by the availability of technology which can conveniently "shutter" the observer's view, and of illumination technologies which allow light generation to be concentrated into short bursts or flashes, both of these happening at rates which are high enough for the human eye to perceive uninterrupted vision.
The term "shuttering" it used here to mean the closing and opening of some or all of an observer's field of view in a rapid and controlled way. An example of such shuttering occurs in, for example, LCD shutter glasses. In these glasses an LCD panel is placed in front of each of the viewer's eyes. Each panel is rapidly switched between opaque and clear states, with these state changes being synchronised with, for example, rapid changes in the image being displayed on a computer monitor.
In the invention the observer's view (both eyes identically) is shuttered in such a way that it is blocked for most of the time. Brief openings of the shutter are made at a rate which is above that at which the human eye can perceive interruptions. The shutter might be open for, for example, 1/2O*11 of the time, and open 120 times per second.
In one aspect of the invention the light source which is of interest is controlled in such a way that it produces light in short bursts, the timing of these bursts being synchronised with the shuttering system so that they occur only while the shutter is open. The light power being generated during these bursts can be far greater than the light power being generated on average over a period of, for example, a second. The human eye, however, perceives the power of the light to be a constant, at the lower average value. The energy consumption of the lighting system, and its heat by-product, will in many cases be veiy close to that of the average rather than the peak power.
Since the light originating from the synchronised source is always able to pass through an open shutter it is not too greatly diminished by the shuttering system. For most of the time, however, the undesired light is blocked by a closed shutter, thus being perceived to be greatly diminished. To the viewer, therefore, the shuttering system acts, in effect, as a selective filter, which removes most of the undesired light but little or no of the desired light (i.e. light from the synchronised source).
Examples of synchronised light sources which might be used in this way are:
• A backlight in an LCD computer monitor or television screen (e.g. cold cathode fluorescent tube, LED, electroluminescent panel, other gas discharge tube)
• An instrument panel with indicator lights illuminated by, for example, LEDs (including Organic LEDs).
• A plasma TV
• Instrument panels, control boards, dashboards
• A computer display or television picture projector system Examples of shuttering technologies which might be used are:
• LCD (e.g. ferroelectric, TN, STN, fast nematic, pi-cell)
• PLZT (Polarized Lead Zirconium Titanate)
• Mechanical
The invention will now be described by way of example, with reference to the accompanying drawings in which:
Figure 1 shows a block diagram of a system for improved viewing of an LCD computer monitor or TV monitor
In figure 1 a user 1 views a computer monitor or TV screen 7 based on an LCD panel (seen from the side) 6, backlit by a fluorescent or gas discharge tube 7. The user wears shuttering eyeglasses 2. Often it will be desirable to use a more "wraparound" design of eyeglass than that shown here for purposes of clarity, so as to exclude more ambient light. A control and drive unit 4 energises the tube intermittently and communicates the timing of these energised periods to the glasses (line 3) through one of a variety of possible means (see below).
The glasses are made clear and opaque, as illustrated in graph 8, in synchronisation with the output of light from the tube, as illustrated in graph 9. These graphs are indicative, rather than accurately to scale.
In each of the examples above the synchronisation of the shuttering system and the illumination system can be arranged in a number of ways. A direct connection through a wire can be used, for example, or a wireless data link using radio or infrared. It is also possible to use the variation in the light power emitted by the synchronised source itself, thought the use of a visible-light photodetector and appropriate electronic or software filters.
An external source of synchronisation signals can also be used. One example of such a source is the low frequency "Rugby" radio time codes (DCF, MCF), or the GSM satellite signals.

Claims

Claims (A method for reducing unwanted light)
1 A display device having a light source, wherein the display device is operable to display an image to a viewer on provision of light from the light source and the light source is operable to switch between an on state where light is emitted from the light source and an off state where no light or much reduced light is emitted from the light source; a shuttering device located between the display device and said viewer, the shuttering device operable to switch between a first configuration in which light is largely permitted to pass through the device and a second configuration in which light is largely prevented from passing through the device; a controller in communication with (at least aware of the state of) the display device and in communication with the shuttering device, the controller operable to switch the shuttering device between said first and second configurations in dependence upon the state of the light source; such mat when the light source is in an on state, the shuttering device is in a first configuration and when the light source is in an off state, the shuttering device is in a second configuration.
2 A display system according to Claim 1 , wherein the light source switches between an on state and off state at a rate faster than the persistence rate of human vision i.e. >50Hz.
3 A display system according to Claim 2, wherein the shuttering device comprises an LCD panel or panels.
4 A display system according to Claim 2, wherein the shuttering device comprises a ferroelectric (FLC) LCD panel or panels.
5 A display system according to Claim 2, wherein the shuttering device comprises a mechanical shutter or shutters.
6 A display system according to Claim 2, wherein the shuttering device comprises a PLZT (Polarized Lead Zirconium Titanate) panel or panels. 7 A display system according to Claim 2, wherein the shuttering device is provided in eyewear.
8 A display system according to Claim 7, wherein the display device comprises an LCD display panel, for which the light source serves as a backlight.
9 A display system according to Claim 8, wherein the display device is a computer monitor.
10 A display system according to Claim 8, wherein the display device is a television monitor.
11 A display system according to Claim 2, wherein the light source comprises a gas discharge tube.
12 A display system according to Claim 2, wherein the light source comprises a high pressure mercury vapour discharge lamp.
13 A display system according to Claim 2, wherein the light source comprises CCFL (cold cathode fluorescent light) light or lights.
14 A display system according to Claim 2, wherein the light source comprises a xenon discharge light or lights.
15 A display system according to Claim 2, wherein the light source comprises LEDs (light emitting diodes), including but not limited to OLEDs (Organic Light Emitting Diodes).
16 A display system according to Claim 7, wherein the display device comprises a computer or television projector.
17 A display system according to any preceding Claim, wherein the controller is in wireless radio communication with the shuttering device. 18 A display system according to any preceding Claim, wherein the controller is in wireless infra-red communication with the shuttering device.
19 A display system according to any preceding Claim, further comprising a light sensor in communication with the controller, the light sensor operable to detect light emitted by the light source and signal to the controller to switch the shuttering device to an on state on detection of light emitted by the light source.
20 A display system according to Claim 19, wherein the light sensor is located adjacent the shuttering device.
21 A controller for use with a display system according to any preceding Claim.
22 A method of providing improved image quality comprising the steps of a) providing a display device having a light source and operable to provide a display to a viewer on emission of light by the light source. b) providing shuttering means located between the display device and a viewer. c) detecting emission of light from the light source; and d) switching the shuttering means between an open and closed configuration in continuous synchrony with the light source; such that when the light source is emitting light, the shuttering means is in an open configuration and the display provided on the display device is visible to a viewer.
23 A method according to Claim 22, wherein emission of light from the light source is switched on and off at a rate faster than the persistence rate for human vision (> 50Hz).
24 A method to improve the intelligibility of a display system which arranges for it to produce brief bursts of light (rather than a continuous illumination), the timing of these bursts being synchronised with a shuttering system that periodically blocks an observer's view, so as to improve the ratio, averaged over time, between wanted and unwanted light. The rate at which the light bursts are produced, and the shutter opens and closes, is above the persistence rate for human vision (> 50Hz).
25 A method, according to Claim 24, which uses LCD (including FLC) panels in goggles or eyeglasses to block or admit light to a wearer's eyes in synchronisation with a light source or light sources. 26 A method, according to Claim 24, which uses mechanical shutters in goggles or eyeglasses to block or admit light to a wearer's eyes in synchronisation with a light source or light sources.
27 A method, according to Claim 24, which uses shutterable goggles or eyeglasses based on PLZT panels as the shuttering system.
28 A method, according to Claim 24, which uses shutterable eyeglasses or goggles as the shuttering system
29 A method, according to Claim 24, which uses a gas discharge tube or tubes (e.g. low pressure Xenon, or CCFL) as the synchronised backlight source or light sources in an LCD display panel.
30 A method, according to Claim 24, which uses LEDs as the synchronised backlight source or light sources in an LCD display panel.
31 A method, according to Claim 24, which uses a projector-type computer or video display, the light source or light sources for which is capable of being switched on and off rapidly in synchronisation with a shuttering system.
32 A method, according to Claim 24 and Claim 28, which achieves synchronisation between light source and shuttering goggles or eyeglasses by the use of wireless radio signals between the system controlling the light source and the system controlling the shutters in the goggles or eyeglasses.
33 A method, according to Claim 24 and Claim 28, which uses infra-red signals as the basis of wireless signalling between the system controlling the light source and the system controlling the shutters in the goggles or eyeglasses.
34 A method, according to Claim 24 and Claim 28, which achieves synchronisation between a light source and shuttering system through the measurement, at the location the shuttering system, of incoming light levels, some of which light originates from the synchronised light source or light sources. The light source cycles regularly, but free of any control signals from the shuttering system.
PCT/GB2005/004350 2004-11-12 2005-11-11 A method for reducing unwanted light WO2006051306A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0424997A GB0424997D0 (en) 2004-11-12 2004-11-12 A system for the reduction of unwanted light
GB0424997.5 2004-11-12

Publications (1)

Publication Number Publication Date
WO2006051306A1 true WO2006051306A1 (en) 2006-05-18

Family

ID=33523619

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/004350 WO2006051306A1 (en) 2004-11-12 2005-11-11 A method for reducing unwanted light

Country Status (2)

Country Link
GB (2) GB0424997D0 (en)
WO (1) WO2006051306A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021043430A1 (en) * 2019-09-06 2021-03-11 MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. System for displaying information to a user
RU2795109C1 (en) * 2019-09-06 2023-04-28 Макс-Планк-Гезелльшафт Цур Фердерунг Дер Виссеншафтен Е.Ф. System for displaying information to the user

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2215847A2 (en) 2007-11-28 2010-08-11 Koninklijke Philips Electronics N.V. 3d visualization
FR3011090B1 (en) 2013-09-26 2016-12-23 Valeo Vision DATA DISPLAY LENSES HAVING AN ANTI-GLARE SCREEN
FR3011096B1 (en) 2013-09-26 2015-10-16 Valeo Vision LIGHTWEIGHT ANTI-GLARE AND VISION GOGGLES WITH THREE DIMENSIONS
FR3011091A1 (en) 2013-09-26 2015-03-27 Valeo Vision DATA DISPLAY LENSES HAVING AN ANTI-GLARE SCREEN
FR3011095B1 (en) 2013-09-26 2016-12-23 Valeo Vision ADAPTIVE OPTICAL FILTER FOR GLASSES OF GLASSES
FR3010938B1 (en) 2013-09-26 2015-10-30 Valeo Vision DEVICE AND METHOD FOR DRIVING ASSISTANCE
CA2949250C (en) * 2014-05-28 2024-02-20 Inoptec Limited Zweigniederlassung Deutschland Electronic spectacles
FR3039348A1 (en) * 2015-07-23 2017-01-27 Valeo Vision DIFFERENTIATED VISUALIZATION DEVICE PROVIDED WITH ACTIVE GLASSES
DE102017101275A1 (en) 2017-01-24 2018-07-26 Vue Magique GmbH Reduction of extraneous light influence (e.g., reflection or glare from sunlight) when viewing displays (e.g., televisions, monitors, laptops, cell phones, tablets, navigation devices) by synchronizing the display with shutter glasses
KR102492604B1 (en) 2018-03-09 2023-01-27 막스-플랑크-게젤샤프트 츄어 푀르더룽 데어 비쎈샤프텐 에.파우. A system that displays information to users

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5276539A (en) * 1990-12-14 1994-01-04 Humphrey Engineering, Inc. Method and apparatus for controlling perceived brightness using a time varying shutter
US5724062A (en) * 1992-08-05 1998-03-03 Cree Research, Inc. High resolution, high brightness light emitting diode display and method and producing the same
JPH10240212A (en) * 1997-03-03 1998-09-11 Sony Corp Video display device
US5877825A (en) * 1996-05-31 1999-03-02 The State Of Israel, Atomic Energy Commission Soreq Nuclear Research Center Method and device including electro-optical shutter for protection from pulsed radiation
EP0962169A2 (en) * 1998-05-30 1999-12-08 Frankia Fahrzeugbau Pilote GmbH & Co oHG Television cupboard for mobile homes and caravans
EP1168037A1 (en) * 2000-06-30 2002-01-02 Kabushiki Kaisha Topcon Optical pulse observing device
JP2002262310A (en) * 2001-02-26 2002-09-13 Nsp Corp Stereoscopic video image display device
US20030133569A1 (en) * 2000-01-12 2003-07-17 International Business Machines Corporation Secure method for providing privately viewable data in a publicly viewable display

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5075789A (en) * 1990-04-05 1991-12-24 Raychem Corporation Displays having improved contrast
US7071907B1 (en) * 1999-05-07 2006-07-04 Candescent Technologies Corporation Display with active contrast enhancement
US20010043266A1 (en) * 2000-02-02 2001-11-22 Kerry Robinson Method and apparatus for viewing stereoscopic three- dimensional images

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5276539A (en) * 1990-12-14 1994-01-04 Humphrey Engineering, Inc. Method and apparatus for controlling perceived brightness using a time varying shutter
US5724062A (en) * 1992-08-05 1998-03-03 Cree Research, Inc. High resolution, high brightness light emitting diode display and method and producing the same
US5877825A (en) * 1996-05-31 1999-03-02 The State Of Israel, Atomic Energy Commission Soreq Nuclear Research Center Method and device including electro-optical shutter for protection from pulsed radiation
JPH10240212A (en) * 1997-03-03 1998-09-11 Sony Corp Video display device
EP0962169A2 (en) * 1998-05-30 1999-12-08 Frankia Fahrzeugbau Pilote GmbH & Co oHG Television cupboard for mobile homes and caravans
US20030133569A1 (en) * 2000-01-12 2003-07-17 International Business Machines Corporation Secure method for providing privately viewable data in a publicly viewable display
EP1168037A1 (en) * 2000-06-30 2002-01-02 Kabushiki Kaisha Topcon Optical pulse observing device
JP2002262310A (en) * 2001-02-26 2002-09-13 Nsp Corp Stereoscopic video image display device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 14 31 December 1998 (1998-12-31) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 01 14 January 2003 (2003-01-14) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021043430A1 (en) * 2019-09-06 2021-03-11 MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. System for displaying information to a user
CN114651299A (en) * 2019-09-06 2022-06-21 马克斯-普朗克科学促进学会 System for displaying information to a user
JP2022547290A (en) * 2019-09-06 2022-11-11 マックス－プランク－ゲゼルシャフト ツール フォーデルング デル ヴィッセンシャフテン エー．ヴェー． A system for displaying information to users
US20220366821A1 (en) * 2019-09-06 2022-11-17 MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. System for displaying information to a user
AU2019464927B2 (en) * 2019-09-06 2023-04-27 MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. System for displaying information to a user
RU2795109C1 (en) * 2019-09-06 2023-04-28 Макс-Планк-Гезелльшафт Цур Фердерунг Дер Виссеншафтен Е.Ф. System for displaying information to the user

Also Published As

Publication number Publication date
GB0523004D0 (en) 2005-12-21
GB0424997D0 (en) 2004-12-15
GB2420183A (en) 2006-05-17

Similar Documents

Publication Publication Date Title
WO2006051306A1 (en) A method for reducing unwanted light
TWI428895B (en) Backlight control apparatus and associated method
CN102770798B (en) Image display light emission device and image display device
CN1791298B (en) Lighting device, liquid crystal display device, mobile terminal device and controlling method thereof
US9001198B2 (en) Image display viewing system, optical modulator and image display device
US20110205251A1 (en) Passive eyewear stereoscopic viewing system with frequency selective emitter
US20090179850A1 (en) Three-dimensional liquid crystal display device and related method of operation
WO2004068213A1 (en) Image display
TW201214398A (en) Electro-optic device and stereoscopic vision display apparatus
US9325976B2 (en) Displays, including HDR and 3D, using bandpass filters and other techniques
WO2011133574A1 (en) 3d display using partial screen illumination and syncronized shutter glass
CN101411186A (en) Projector using lamp, method and program for controlling discharge lamp light source
JP5132763B2 (en) Liquid crystal image display device
US20110074935A1 (en) Image Display Viewing System and Image Display Device
EP1804230A3 (en) Liquid crystal television receiver with liquid crystal panel and its illumination apparatus, liquid crystal display, electric device, liquid crystal projector, and liquid crystal display control method for controlling liquid crystal display
WO2011089917A1 (en) Control device, display device, eyeglasses device and video system
EP2532168B1 (en) Stereoscopic display system based on glasses using photochromatic lenses
US20120007963A1 (en) Illumination controller, illuminator and illumination system using illumination controller, and display device and eyeglass device for use with illumination controller
US9472094B2 (en) Display device, eyeglass device and image system
US8599249B2 (en) Stereoscopic image display apparatus and image display system that reduces brightness unevenness of projected images by controlling the light level of a light source
RU2752654C1 (en) Method for displaying information to user
KR101063478B1 (en) 3-dimension stereograph providing apparatus using spectacle and method thereof
KR20090110378A (en) Visual display system and method for displaying a video signal
US20130141784A1 (en) Stereoscopic display system using illumination detector
US20120182613A1 (en) Shutter glasses and image display system

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KN KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase

Ref document number: 05802718

Country of ref document: EP

Kind code of ref document: A1