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1. US20070217043 - Variable focal length lens and lens array comprising discretely controlled micromirrors

Office
United States of America
Application Number 11742510
Application Date 30.04.2007
Publication Number 20070217043
Publication Date 20.09.2007
Grant Number 7411718
Grant Date 12.08.2008
Publication Kind B2
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
G02B 5/08
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
08Mirrors
G02B 7/182
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
7Mountings, adjusting means, or light-tight connections, for optical elements
18for prisms; for mirrors
182for mirrors
CPC
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 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 26/0866
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
Applicants Angstrom, Inc.
Stereo Display, Inc.
Inventors Cho Gyoung Il
Gim Dong Woo
Kim Tae Hyeon
Seo Cheong Soo
Priority Data 10893039 16.07.2004 US
Title
(EN) Variable focal length lens and lens array comprising discretely controlled micromirrors
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.