Abstract: Image stabilization devices and methods are disclosed. In various embodiments, image stabilization is achieved by altering the direction of the optical axis through a flexible lens body by activating actuators attached to the flexible lens body, wherein the amount of applied voltages onto the actuators are proportional to signals provided by motion sensors sensing yawing and pitching movements, respectively.
Type:
Application
Filed:
May 7, 2010
Publication date:
June 30, 2011
Applicant:
poLight AS
Inventors:
Benny Svardal, Thomas Spatcheck, Vladimir Kartashov
Abstract: The present invention is related to a lens assembly comprising a flexible lens body (10) inside a cavity bounded by a sidewall (11) and a first transparent cover (13), and a second transparent cover (14), wherein both covers (13,14) are in contact with respective surfaces of the lens body (10). Piezo electric elements (12) shapes the lens body (10) when activated, thereby adjusting the focal length of the lens assembly.
Type:
Application
Filed:
February 12, 2008
Publication date:
April 28, 2011
Applicant:
poLight AS
Inventors:
Lars Henriksen, Morten Eliassen, Vladimir Kartashov, Jon Herman Ulvensoen, Ib-Rune Johansen, Karl Henrik Haugholt, Dag Torstein Wang, Frode Tyholdt, Wilfred Booij
Abstract: A method and system providing dynamic contrast control in scanning line color display systems, and particularly a method and system comprising at least two modulator units is disclosed. One modulator unit is for modulating pixel information in a line to be displayed while the other one provides illumination intensity control over different pixel areas or clusters of pixels of said same line to be displayed by using a tunable diffractive grating element (TDG) in the illumination path to provide image source dependent active brightness level control, i.e. ‘dynamic contrast’, as well as a shutter function for pixels off transition periods.
Type:
Application
Filed:
December 9, 2008
Publication date:
July 22, 2010
Applicant:
POLIGHT AS
Inventors:
Gunnar Hedin, Richard Berglind, Tore Svortdal, Benny Svardal
Abstract: The present invention provides method steps for manufacturing an assembly of adjustable lenses on a wafer. The method steps provide an easy manufacturing of such lenses, minimizing the cost of assembly, and at the same time provide a solution for mass production of compact adjustable lenses for use in mobile phones, etc.
Type:
Application
Filed:
October 5, 2007
Publication date:
June 3, 2010
Applicant:
POLIGHT AS
Inventors:
Lars Henriksen, Morten Eliassen, Vladimir Kartashov, Jon Herman Ulvensøen
Abstract: The present invention provides a solution for designing a compact adjustable lens assembly, wherein a circular shaped piezoelectric crystal is bending a thin glass cover, thereby providing a shift of focal length of the lens assembly.
Type:
Application
Filed:
October 5, 2007
Publication date:
April 15, 2010
Applicant:
POLIGHT AS
Inventors:
Lars Henriksen, Morten Eliassen, Vladimir Kartashov, Jon Herman Ulvensoen
Abstract: Doubling the resolution of images in a line scan projection system is possible without doubling the length of the modulator or changing the size of the pixels. By arranging an additional pixel row in the modulator, and merging the rows together with half a pixel offset in both directions in the projected image, the resolution may be effectively doubled without significantly increasing the size or speed requirement for the modulator itself.
Abstract: The present invention relates to a tuneable diffraction grating modulator based on the principle of total internal reflection comprising an elastomer as a deformable layer to be modulated in a nonuniform electric field.
Abstract: A holographic recording medium comprising an amorphous host material which undergoes a phase change from a first to a second thermodynamic phase in response to a temperature rise about a predetermined transition temperature; a plurality of photo-sensitive molecular units embedded in the host material and which can be orientated in response to illumination from a light source; whereby said molecular units may be so orientated when said host material is at a temperature equal to or above said transition temperature but retain a substantially fixed orientation at temperatures below said transition temperature.
Type:
Application
Filed:
June 7, 2002
Publication date:
April 3, 2003
Applicant:
POLIGHT TECHNOLOGIES LTD.
Inventors:
Stephen Elliott, Pavel Krecmer, Jiri Prokop
Abstract: A holographic recording medium comprising an amorphous host material which undergoes a phase change from a first to a second thermodynamic phase in response to a temperature rise about a predetermined transition temperature; a plurality of photo-sensitive molecular units embedded in the host material and which can be orientated in response to illumination from a light source; whereby said molecular units may be so orientated when said host material is at a temperature equal to or above said transition temperature but retain a substantially fixed orientation at temperatures below said transition temperature.
Type:
Application
Filed:
June 7, 2002
Publication date:
March 13, 2003
Applicant:
POLIGHT TECHNOLOGIES LTD.
Inventors:
Stephen Elliott, Pavel Krecmer, Jiri Prokop
Abstract: An opto-mechanical device is constituted by an optically responsive actuating member in which a mechanical strain occurs in response to changes in its illumination. The actuating member is preferably at least partly formed from a semiconducting glassy matrix such as a chalcogenide glass. Preferably the opto-mechanical device illuminates the actuating member with light which is preferably plane polarized. Preferably it also varies the polarization angle of the plane polarized light to cause a change in the strain generated in the actuating member.
Type:
Grant
Filed:
November 12, 1999
Date of Patent:
May 21, 2002
Assignee:
Polight Technologies Limited
Inventors:
Stephen Richard Elliott, Mark Edward Welland, Pavel Krecmer