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1. WO2011005252 - LIGHT DIFFUSERS AND DISPLAYS COMPRISING SAME

Publication Number WO/2011/005252
Publication Date 13.01.2011
International Application No. PCT/US2009/049839
International Filing Date 07.07.2009
IPC
G02B 5/02 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
02Diffusing elements; Afocal elements
G02F 1/1335 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
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
CPC
G02B 5/02
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
02Diffusing elements; Afocal elements
Applicants
  • HEWLETT-PACKARD DEVELOPMENT COMPANY, [US]/[US] (AllExceptUS)
  • KITSON, Stephen [GB]/[GB] (UsOnly)
  • GEISOW, Adrian [GB]/[GB] (UsOnly)
Inventors
  • KITSON, Stephen
  • GEISOW, Adrian
Agents
  • CHANG, Yeh, Kurt
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) LIGHT DIFFUSERS AND DISPLAYS COMPRISING SAME
(FR) DIFFUSEURS DE LUMIÈRE ET DISPOSITIFS D'AFFICHAGE LES COMPRENANT
Abstract
(EN)
A light diffuser (20, 46) includes a plurality of fiber-like features (24) disposed in a filler (26) in a two-dimensional array. The features (24) have a longitudinal axis and are substantially parallel to one another. A refractive index of the features (24) is different from a refractive index of the filler (26). The features (24) are either a polymeric solid or a liquid. The filler (26) is substantially solid when features (24) are liquid. When the features (24) are a polymeric solid, at least one feature (24) of the plurality includes at least one predetermined variation in one or both of a longitudinal cross-sectional dimension and a horizontal cross-sectional dimension.
(FR)
L'invention porte sur un diffuseur de lumière (20, 46) qui comprend une pluralité de caractéristiques de type fibre (24) disposées dans une charge (26) dans un réseau à deux dimensions. Les caractéristiques (24) ont un axe longitudinal et sont sensiblement parallèles les unes aux autres. Un indice de réfraction des caractéristiques (24) est différent d'un indice de réfraction de la charge (26). Les caractéristiques (24) sont soit un solide polymère, soit un liquide. La charge (26) est sensiblement solide lorsque les caractéristiques (24) sont liquides. Lorsque les caractéristiques (24) sont un solide polymère, au moins une caractéristique (24) de la pluralité comprend au moins une variation prédéterminée dans l'une, ou les deux, d'une dimension de section transversale longitudinale et d'une dimension de section transversale horizontale.
Also published as
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