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1. EP1774390 - VARIABLE FOCAL LENGTH LENS AND LENS ARRAY COMPRISING DISCRETELY CONTROLLED MICROMIRRORS

Office
European Patent Office
Application Number 05764421
Application Date 06.07.2005
Publication Number 1774390
Publication Date 18.04.2007
Publication Kind A2
IPC
G02B 26/00
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
CPC
G02B 3/14
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
3Simple or compound lenses
12Fluid-filled or evacuated lenses
14of variable focal length
G02B 5/09
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
08Mirrors
09Multifaceted or polygonal mirrors ; , e.g. polygonal scanning mirrors; Fresnel mirrors
G02B 26/0825
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
08for controlling the direction of light
0816by means of one or more reflecting elements
0825the reflecting element being a flexible sheet or membrane, e.g. for varying the focus
G02B 26/0841
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
08for controlling the direction of light
0816by means of one or more reflecting elements
0833the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
0841the reflecting element being moved or deformed by electrostatic means
G02B 26/0866
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
08for controlling the direction of light
0816by means of one or more reflecting elements
0833the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
0866the reflecting means being moved or deformed by thermal means
G02B 26/08
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
08for controlling the direction of light
Applicants STEREO DISPLAY INC
ANGSTROM INC
Inventors CHO GYOUNG IL
GIM DONG WOO
KIM TAE HYEON
SEO CHEONG SOO
Designated States
Priority Data 10893039 16.07.2004 US
Title
(DE) LINSE MIT VARIABLEM BRENNPUNKT UND LINSENGRUPPE MIT DISKRET GESTEUERTEN MIKROSPIEGELN
(EN) VARIABLE FOCAL LENGTH LENS AND LENS ARRAY COMPRISING DISCRETELY CONTROLLED MICROMIRRORS
(FR) LENTILLE A FOCALE VARIABLE ET RESEAU DE LENTILLES A MICROMIROIRS SOUS CONTROLE DISCRET
Abstract
(EN) A Discretely Controlled Micromirror Array Lens (DCMAL) consists of many Discretely Controlled Micromirrors (DCMs) and actuating components. The actuating components control the positions of DCMs electrostatically. The optical efficiency of the DCMAL is increased by locating a mechanical structure upholding DCMs and the actuating components under DCMs to increase an effective reflective area. The known microelectronics technologies can remove the loss in effective reflective area due to electrode pads and wires. The lens can correct aberrations by controlling DCMs independently. Independent control of each DCM is possible by known microelectronics technologies. The DCM array can also form a lens with arbitrary shape and/or size, or a lens array comprising the lenses with arbitrary shape and/or size.
(FR) L'invention concerne une lentille à réseau de micromiroirs sous contrôle discret qui comprend plusieurs micromiroirs sous contrôle discret et des actionneurs. Les actionneurs contrôlent la position des micromiroirs par effet électrostatique. L'efficacité optique de cette lentille est accrue par l'installation d'une structure mécanique maintenant les micromiroirs et les actionneurs sous les micromiroirs, ce qui permet d'augmenter une zone de réflexion effective. Les techniques microélectroniques existantes permettent d'éliminer les pertes de zone de réflexion effective résultant des plages et fils d'électrodes. La lentille est capable de corriger les aberrations par un contrôle indépendant des micromiroirs. Ce contrôle indépendant est possible grâce aux techniques microélectroniques existantes. Le réseau de micromiroirs peut également constituer une lentille de forme et/ou de taille arbitraire, ou bien un réseau de lentilles comprenant des lentilles de forme et/ou de taille arbitraire.