Reveo, Inc.

Kent Optronics, Inc.

Other

Inventqjaya Sdn Bhd

The Boeing Company

University of Rochester

Le Li

Sadeg Mustafa Faris

Yingqiu Jiang

Bunsen Fan

Jian-Feng Li

Haiping Yu

Jian-feng Li

Sameer Vartak

Yongxin Tang

Hristina Galabova

Gregory P Crawford

Aharon Hochbaum

Richard C Wiley

Christopher Chadwick Bowley

Adam K Fontecchio

Ben Tang

Jiangbin Zhao

Zhan Chen

Jie Yang

Shenggang Wang

Mark Stewart Wilenski

John Ralph Hull

Mark Joseph Clemen, Jr

Alan Frank Stewart

Deng-ke Yang

Stephen D Jacobs

Kenneth L Marshall

Donald V Drouin, Jr

Aaron Boyd Cole

Tanya Z Kosc

Philip E Johnson

George Albert Perry

Darran R Cairns

Jaujeng Lin

Sorasak Danworaphong

Rick L McGann

Jianhui Li

Hejun Ma

Fang Du

Lei Guo

According to an embodiment, an electrically switchable mirror includes: a first electrically switchable layer of cholesteric liquid crystal material, the first electrically switchable layer having a first state in which right-handed circularly polarized light incident thereon is reflected and left-handed circularly polarized light incident thereon is transmitted and a second state wherein right-handed and left-handed circularly polarized light incident thereon are transmitted; a second electrically switchable layer of cholesteric liquid crystal material, the second electrically switchable layer having a first state in which left-handed circularly polarized light incident thereon is reflected and right-handed circularly polarized light incident thereon is transmitted and a second state wherein right-handed and left-handed circularly polarized light incident thereon are transmitted; and a first electrically switchable wave plate disposed between the first and second electrically switchable layers.

Window method and apparatus for protection from bright light sources

An optical viewing apparatus may include an objective lens assembly and an one eye piece assembly connected to the objective lens assembly. The optical viewing apparatus may exhibit a field of view in the range of between 40&#xb0; and, preferably beyond 80&#xb0;, and an eye-relief of at least 15 mm, and the optical viewing apparatus may exhibit a foveated image for at least one field of view (FOV) wherein the optical on-axis resolution decays toward the periphery of the field of view.

Wide field of view foveal night vision systems

A sensing device may include a cholesteric crystal device including two optically transparent substrates; a liquid crystal having portions adapted for producing a plurality of optical states, said liquid crystal being arranged between the two optically transparent substrates; an optical sensor for changing optical states of respective portions of said liquid crystal to produce a range of respective optical states including all optical states produced by said liquid crystal ranging from one state to any combination of broadband reflection, tunable narrow band reflection, light scattering, and transparency in accordance with an amount of voltage applied across said cholesteric crystal device for changing optical states.

Displays and sensors integrated with multi-state cholesteric liquid crystal devices

An m&#xd7;n fan out device for receiving at least m=2 laser beams of different wavelengths and dividing the power of each laser beam into at least two other laser beams directed to at least one of n exit ports of the fan out device is disclosed.

Multi-beam multi-aperture optical beam steering module

Electro-optically operated transmitters containing a wave guide liquid crystal beam steering device in series of fine beam steering devices as well as electrically switchable mirror are disclosed. The wave guide beam steering device is constructed on a planar lightwave circuit that contains a plurality of liquid crystal switching elements intersecting a plurality of optical wave guides and one main wave guide that has a curvature for light propagation. The transceiver is capable of continuously steering multiple beams of light into separate independent directions with a field-of-regard close to 4&#x3c0;. The resulted optical transmitter device is motionless, polarization sensitive or insensitive, stable within the operational spectral region, and stable versus temperature. When an optical receiver is integrated, the transmitters become transceivers. The invention also includes the methods for manufacturing the wave guide beam steering device.

Wide steering-range motionless optical beam steering device, and methods of manufacture

Disclosed are super broadband circularly polarizing film materials and novels methods of fabricating and using the same. The circularly polarizing materials are made from a film of material, such as a CLC polymer having a cholesteric order, in which a liquid crystal material, such as a nematic liquid crystal material, is distributed in a non-linear fashion across the thickness of the film in a plurality of liquid crystal-rich and liquid crystal-depleted sites in the CLC polymer. The pitch of the helices of the CLC molecules in the polyermized CLC material varies in a non-linear (e.g. exponential) manner along the depth dimension (i.e. transverse to the surface) thereof. The resulting circularly polarizing materials have reflection and transmission characteristics over bands of operation approaching 2000 nm. Depending on the final spiral structure of the materials utilized, the CLC circularly polarizing materials reflect either left-handed or right-handed circularly polarized light.

Super broad-band polarizing reflective material

Electro-optical glazing structures having total-scattering and total-transparent modes of operation which are electrically-switchable for use in dynamically controlling electromagnetic radiation flow in diverse applications.

Electro-optical glazing structures having scattering and transparent modes of operation and methods and apparatus for making the same

Technology for constructing a single layer polarization insensitive electrically switchable liquid crystal mirror is disclosed which serves as the basic element for constructing an optical router switch array in free space as well as waveguide format. The optical router switch array includes a plurality of switchable liquid crystal mirror elements having liquid crystal arranged in stack cells and/or in a waveguide configuration. The resulted optical router switches are motionless, polarization insensitive, stable within the operational spectral region, and stable versus temperature. The invention also includes methods for manufacturing a single switchable liquid crystal mirror element and the optical switch arrays. The same technology is further extended to constructing an electrically tunable optical filter that is motionless and polarization insensitive.

Optical switches made by nematic liquid crystal switchable mirrors, and apparatus of manufacture

A light controlling film is disclosed, comprising a polymerized polymer network varying spatially in a direction normal to the film surface, where the polymerized polymer network is a crosslinked high molecular weight polymeric material mixed with a low molecular weight nematic material exhibiting cholesteric liquid crystal (CLC) order, wherein an electric field impressed in the film controls the reflection bandwidth of circularly polarized light.

Spectrum-controllable reflective polarizers having electrically-switchable modes of operation

A material for protection against injurious ambient light composed of a binder mixed with non metallic reflective flakes is disclosed.

Multilayer non-metallic reflecting flakes for cosmetics and sunscreens

A method of producing an iridescent reflecting surface on an object is presented. Flakes of dry non metallic reflecting material such as cholesteric liquid crystal (CLC) material are applied to the surface so that the flakes are parallel with the surface and bound with a binder to the surface.

Method of producing iridescent coatings

Electro-optical glazing structures having total-reflection and semi-transparent and totally-transparent modes of operation which are electrically-switchable for use in dynamically controlling electromagnetic radiation flow in diverse applications.

Electro-optical glazing structures having total-reflection and transparent modes of operation for use in dynamical control of electromagnetic radiation

Electro-optical glazing structures () having total-scattering and total-transparent modes of operation which are electrically-switchable for use in dynamically controlling electromagnetic radiation flow in diverse applications.

Electro-optical glazing structures having scattering and transparent modes of operation

An optical router switch array includes a plurality of switchable mirror elements having holographic liquid crystal arranged in stack cells. Each of the mirror elements is isolated electrically from the other switchable mirror elements by a plurality of substrates alternative arranged between the switchable mirror elements. Holographic gratings are formed on the holographic liquid crystal by exposure to holography at predetermined incident angles. A single switchable mirror element can also be provided in cases where an array is not required. The switchable mirror elements are polarization insensitive, stable within the operational spectral region, and stable versus temperature. The invention also includes methods for manufacturing a single switchable mirror element and the optical arrray.

Optical router switch array and method for manufacture

A light controlling film is described comprising a polymerized polymer network of a crosslinked high molecular weight polymeric material and a low molecular weight cholesteric liquid crystal (CLC) material, wherein the high molecular weight and the low molecular weight form a material having cholesteric liquid crystal (CLC) order such that the film is a reflective circular polarizer whose bandwidth is controllable by an electric field impressed in the film.

System for controlling unpolarized electromagnetic radiation

Growing community of inventors

Yorktown Heights, NY, United States of America

Le Li