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| Number | Title | Issue Date |
| 8120853 | Optical assembly, method for assembling an optical assembly, system for securing optical elements of an optical assembly and a spring for securing optical elements of an optical assembly A monolithic frame for optics used in interferometers where the material of the monolithic frame may have a substantially different coefficient of thermal expansion from the beamsplitter and compensator without warping, bending or distorting the optics. This is acco... | 02/21/2012 |
| 8107167 | Spatial-dispersion-free spectral combining of pulsed high peak power fiber laser beams A beam combining system suitable of pulsed fiber laser applications is able to produce non-spatial-dispersive beams using an highly efficient filter, such as a multilayer dielectric filter, in transmission and reflection configurations. The techniques therefore can ... | 01/31/2012 |
| 7429111 | Two-panel color management system The invention provides a two-panel color management system for projection display applications, wherein color sequencing is accomplished using achromatic beam switching and static color separation. In a preferred embodiment, a liquid-crystal polarization switch alte... | 09/30/2008 |
| 7414831 | Adjustable display system A convertible display system includes two displays, beam splitter, and mount, which are adjustable to convert the system for 3D image use and 2D image display use, respectively. In 3D orientation the displays are at an angle to each other and the tops (or bottoms) a... | 08/19/2008 |
| 7414785 | Ultraviolet polarization beam splitter with minimum apodization A beamsplitter includes a first fluoride prism and a second fluoride prism. A coating interface is between the first and second fluoride prisms, wherein an overall R(s)*T(p) function of the beamsplitter varies no more than ±2.74% in the range of 40-50 degrees of in... | 08/19/2008 |
| 7394986 | Flat top optical filtering component The invention relates to wavelength-selective optical filters for allowing light of a narrow optical spectral band, centered around a wavelength (λc) to pass through them, while reflecting the wavelengths lying outside this band. According to the inventi... | 07/01/2008 |
| 7369312 | Thin layered micro optics polarization converter A thin optic electro magnetic radiation polarization converter, available in various combinations, used to convert non-polarized radiation into a single polarization state, which may be utilized in many devices requiring polarized radiation. A unique geometric confi... | 05/06/2008 |
| 7362506 | Ultra-bright light engine for projection displays A projector incorporating a prism and a plurality of light valves for modulating light that passes though the prism, wherein the color splitting-converging prism includes a dichroic coating having multiple layers of high and low index of refraction and ¼ wavelength... | 04/22/2008 |
| 7342707 | Indicators and illuminators using a semiconductor radiation emitter package A vehicle lamp assembly includes a housing and an LED lamp carried in the housing. A signal mirror includes a mirror and an LED lamp. The LED lamp includes a heat extraction member. ... | 03/11/2008 |
| 7326876 | Sequential lateral solidification device A sequential lateral solidification device, for enhancing optical characteristics of the device and for preventing damage caused by an ablation of a crystallization thin film, is disclosed. The device includes a laser light source generating a laser beam, a projecti... | 02/05/2008 |
| 7313298 | Tunable filter A method for implementing a truly hitless tunable filter for use in adding and/or dropping channels in a wavelength division multiplexed (WDM) network is disclosed. An exemplary method for filtering an optical signal may include providing a composite optical signal ... | 12/25/2007 |
| 7300156 | Prism assembly for separating light A prism assembly is provided. The prism assembly comprises a first prism component having a triangular cross-section along an optical path, a second prism component having a first quadrilateral cross-section along the optical path, a third prism component having a s... | 11/27/2007 |
| 7281804 | Prism assembly for separating light A prism assembly is provided. The prism assembly comprises a first prism component having a triangular cross-section along an optical path, a second prism component having a first quadrilateral cross-section along the optical path, a third prism component having a s... | 10/16/2007 |
| 7256940 | Multi-layer thin-film broadband beam splitter with matched group delay dispersion A beam splitter includes a substrate. A thin film layer stack is formed on the substrate to achieve the same group delay dispersion (GDD) for both reflection and transmission from any input port and output port of said beam splitter. ... | 08/14/2007 |
| 7248758 | Hitless tunable filter A method for implementing a truly hitless tunable filter for use in adding and/or dropping channels in a wavelength division multiplexed (WDM) network is disclosed. An exemplary method for filtering an optical signal may include providing a composite optical signal ... | 07/24/2007 |
| 7245432 | Dual diffraction-grating device A diffraction grating device (100) has both reflecting (108) and transmitting (106) gratings inter leaved to allow both transmission diffraction patterns and reflection diffraction patterns to be formed by means of the same device (102). ... | 07/17/2007 |
| 7234815 | Optical viewing device having an apparatus for partial reduction of the illumination intensity The invention concerns an optical viewing device which incorporates a spectral filter to partially reduce the intensity or wavelength(s) of light transmitted to a specific region of a specimen which may be a human eye. The reduction in light intensity or wavelength ... | 06/26/2007 |
| 7230768 | Ultra-bright light engine for projection displays A projector incorporating a prism and a plurality of light valves for modulating light that passes though the prism, wherein the color splitting-converging prism includes a dichroic coating having multiple layers of high and low index of refraction and ¼ wavelength... | 06/12/2007 |
| 7230754 | Neutral white-light filter device A substantially neutral filter across the white-light spectrum is obtained by minimizing the wavelength-dependent effects of filtering components and of reflective coatings on surfaces. The incoming light is captured by a first prism and directed toward the interfac... | 06/12/2007 |
| 7209608 | Wavelength tunable optical filter Provided is a Fabry-Perot type wavelength tunable optical filter, comprising a first mirror; a second mirror located over the first mirror; a driving body located over the first mirror, and having both ends fixed to the first mirror through a spacer; a plurality of ... | 04/24/2007 |
| 7184103 | Laser video projector having multi-channel acousto-optic modulator, and method and circuit for driving the same Provided are a laser video projector having a multi-channel acousto-optic modulator, and a method and circuit for driving the laser video projector. The laser video projector includes a light generating portion, an optic modulator, an optic combining portion, and an... | 02/27/2007 |
| 7169441 | Method for making a UV-reflecting interference layer system There is provided a UV-reflective interference layer system for transparent substrates with broadband anti-reflection properties in the visible wavelength range. The interference layer system includes at least four individual layers. Successive layers have different... | 01/30/2007 |
| 7164530 | Polarizing filter and optical device using the same A polarizing filter has a laminate structure: wherein one to four layers of first dielectric thin films 1 and one to four layers of second dielectric thin films 2 are alternately laminated on a transparent flat substrate 10 to form the laminate ... | 01/16/2007 |
| 7158306 | Light separator A light separator splits polychromatic light into longer and shorter wavelength spectral bands. The light separator is defined between opposing side surfaces that are reflective to incident light and further has an input side for accepting the polychromatic light an... | 01/02/2007 |
| 7156529 | Contrast enhancement filter and display provided with such filter A contrast enhancement filter for a display device includes a plurality of connected sloping surfaces acting as a plurality of beam splitters, and a plurality of light absorbers, each arranged between adjacent beam splitters, so that light incident into an area on t... | 01/02/2007 |
| 7149033 | UV visual light beam combiner An improved light beam combiner is disclosed that creates a more uniform light source across the UV, Visual, and NIR range. It is an optical mechanical device made up of a standard high low dielectric thin film which, when placed at a 45 degree angle between a Deute... | 12/12/2006 |
| 7138619 | Method and apparatus for coincident viewing at a plurality of wavelengths A plurality of imagers, each responsive to a different wavelength range of light radiation, share the same optical system of lenses. An optical film on a substrate is used to split the light beam emanating from the shared optical system. The first wavelength range i... | 11/21/2006 |
| 7133022 | Apparatus for image projection The invention is directed to a solid-state projection device incorporating a light source, modulator, and control circuitry on a single chip. For example, projection device may include several sets of VCSELs, each associated with a set of MEMs mirrors and coupled to... | 11/07/2006 |
| 7104676 | Signaling assembly A signaling assembly is disclosed and which includes a reflective substrate having opposite first and second surfaces; an electromagnetic radiation emitter for emitting visibly discernible electromagnetic radiation and which is borne by the second surface of the ref... | 09/12/2006 |
| 7094461 | P-polarizer with large z-axis refractive index difference A multilayer optical polarizing film has optical layers whose refractive indices substantially match along orthogonal in-plane x- and y-axes, and that mismatch along a z-axis by at least 0.1 and in some cases by at least 0.15. The film has substantially no reflectio... | 08/22/2006 |
| 7092162 | Bandwidth enhancement device An optical cavity is combined with a MUX or a de-MUX device having substantially the same free-spectral range in order to enhance the bandwidth of the device. The optical cavity can be tuned to shift the frequencies of maximum insertion loss to match the center freq... | 08/15/2006 |
| 7086738 | Optical projection system and method An optical projection system has a parallel light source for producing a parallel light beam. A first color splitter splits the parallel light beam into a first color beam and a color mixing beam. The color mixing beam includes a second color beam and a third color ... | 08/08/2006 |
| 7088517 | Beam splitter device or laser-scanning microscope The subject matter of the invention is a beam splitter device having two spaced apart parallel highly reflecting mirrors, between which there is disposed a semireflecting mirror which is spaced a different distance from the at least one highly reflecting mirror, sai... | 08/08/2006 |
| 7072555 | Systems and methods for transmitting electromagnetic energy in a photonic device Systems and methods are provided that allow transmission of an electromagnetic wave in and through a periodic multilayered photonic device. The photonic device preferably is a periodic stack of plane-parallel layers with at least one them displaying dielectric aniso... | 07/04/2006 |
| 7066603 | Cross dichroic prism and reflection type liquid crystal projector using the same A cross dichroic prism for color decomposition includes a blue-reflecting dichroic film for reflecting a blue light component and a red-reflecting dichroic film for reflecting a red light component. Each dichroic film comprises lower and higher refractive index mate... | 06/27/2006 |
| 7062174 | Wavelength division multiplexing add-drop multiplexer using an optical tapped delay line An Optical Tapped Delay Line (OTDL) is combined with other known optical apparatuses to provide an add-drop multiplexer for a wavelength division multiplexing fiber optic network. Each output beam of the OTDL is spatially distinguishable in free space. This waveleng... | 06/13/2006 |
| 7062122 | Tunable optical add/drop device A wavelength-tunable add/drop device for adding or dropping n channels having different center wavelengths is disclosed. A first multicavity variable optical filter for selectably operable to passing one channel while reflecting n−1 other channels depends upon a l... | 06/13/2006 |
| 7055966 | Illuminator and projector When a video signal is inputted to a projector (10) through a video input terminal, a luminance peak value of an image of the video signal is detected by an image-analyzing circuit (61) to be outputted to a CPU (71). A gain-adjusting circuit ( | 06/06/2006 |
| 7057815 | Optical glass for polarizing optical system, production process therefor and polarizing beam splitter An optical glass for polarizing optical system having a photoelastic constant C in the range of −0.2 to +0.5 [10−8 cm2/N] with respect to a wavelength of 633 nm, the optical glass having the following composition (1): composition (1)... | 06/06/2006 |
| 7048384 | Multiple scene projection system A projection system for presenting infrared scenes having biological and chemical agents, simulants and objects such as battlefield items. The generated scenes are primarily for the evaluation of infrared sensors, cameras and stand-off detectors. The system may have... | 05/23/2006 |
