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1. WO2008048734 - THERMALLY CONTROLLED SPATIAL LIGHT MODULATOR USING PHASE MODULATION

Publication Number WO/2008/048734
Publication Date 24.04.2008
International Application No. PCT/US2007/074706
International Filing Date 30.07.2007
IPC
G02F 1/21 2006.01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour
21by interference
G02F 1/01 2006.01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour
G02B 5/28 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
20Filters
28Interference filters
CPC
G02B 5/284
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
20Filters
28Interference filters
284of etalon type comprising a resonant cavity other than a thin solid film, e.g. gas, air, solid plates
G02F 1/0147
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour 
0147based on thermo-optic effects
G02F 1/21
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour 
21by interference
G02F 2001/213
Applicants
  • REDSHIFT SYSTEMS CORPORATION [US]/[US] (AllExceptUS)
  • WAGNER, Matthias [US]/[US] (UsOnly)
  • WU, Shuyun [CN]/[US] (UsOnly)
  • MARSHALL, Charles, M. [US]/[US] (UsOnly)
  • MA, Eugene, Y. [US]/[US] (UsOnly)
  • HEANUE, John, F. [US]/[US] (UsOnly)
Inventors
  • WAGNER, Matthias
  • WU, Shuyun
  • MARSHALL, Charles, M.
  • MA, Eugene, Y.
  • HEANUE, John, F.
Agents
  • THOMPSON, James, F.
Priority Data
11/803,04411.05.2007US
60/851,43813.10.2006US
60/872,83305.12.2006US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) THERMALLY CONTROLLED SPATIAL LIGHT MODULATOR USING PHASE MODULATION
(FR) MODULATEUR DE LUMIÈRE SPATIAL COMMANDÉ THERMIQUEMENT UTILISANT LA MODULATION DE PHASE
Abstract
(EN)
An apparatus (43) includes a thin-film interference filter structure (10) having a generally wave length- dependent resonant response to incident optical energy in a predetermined range of wavelengths. The thin-film interference filter structure (10) includes a thermally tunable layer (16) having a thermally tunable optical characteristic such that a range of wavelength-dependent resonant optical responses of the thermally tunable layer (16) are induced by a corresponding range of thermal conditions of the thermally tunable layer. The thin-film interference filter structure (10) is configured to (1) receive a spatially varying pattern of thermal energy (51) at the thermally tunable layer (16) to impart a corresponding spatially varying pattern to the thermally tunable characteristic of the thermally tunable layer (16), and (2) receive the incident optical energy (22) into the thermally tunable layer (16) and output optical energy (26) having spatial modulation corresponding to the spatially varying pattern (51) of the thermally turnable characteristic.
(FR)
La présente invention concerne un appareil (43) qui comprend une structure de filtre à interférence et film mince (10) ayant une réponse résonante, dépendant généralement de la longueur d'onde, sur l'énergie optique incidente dans une plage prédéterminée de longueurs d'onde. La structure de filtre à interférence et film mince (10) comprend une couche réglable thermiquement (16) ayant une caractéristique optique réglable thermiquement de sorte qu'une plage de réponses optiques résonantes, dépendant de la longueur d'onde, de la couche réglable thermiquement (16) soit induite par une plage correspondante de conditions thermiques de la couche réglable thermiquement. La structure de filtre à interférence et film mince (10) est configurée pour (1) recevoir un motif variant dans l'espace d'énergie thermique (51) sur la couche thermiquement réglable (16) pour affecter un motif variant dans l'espace à la caractéristique thermiquement réglable de la couche thermiquement réglable (16), et (2) recevoir l'énergie optique incidente (22) dans la couche thermiquement réglable (16) et produire une énergie optique (26) ayant une modulation spatiale correspondant au motif variant dans l'espace (51) de la caractéristique thermiquement réglable.
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