Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 7986459 | Grid image and method for the production thereof The present invention relates to a grating image (12) for depicting at least one unscreened halftone image having multiple brightness levels, the grating image exhibiting multiple grating fields (22-1, 22-2, 22-3) that include in e... | 07/26/2011 |
| 7965444 | Method and apparatus to improve filter characteristics of optical filters An optical filter structure for an imager which has customized sub-wavelength elements used to maintain the filter characteristics accordingly across a photo-conversion device to optimize the structure for the angle of incidence as it changes across the imager photo... | 06/21/2011 |
| 7729053 | Wavelength filter with a broad bandwidth of reflection spectrum A wavelength filter, includes a grating in which a first portion extends in X direction on a substrate surface and a second portion extends in the X direction along the first portion and are alternately arranged in Y direction perpendicular to the X direction on the... | 06/01/2010 |
| 7619820 | Dot matrix holograms with spatially varying period A diffractive unit which can reduce the effect of the nonlinearity of the photo-resist recording material to produce a diffractive device with brilliant color, and describes a method for recording. A cross grating device recorded using the method of this present inv... | 11/17/2009 |
| 7508585 | Diffraction optical element and production method thereof The diffraction optical element production method includes a first step of etching an area which becomes a seventh step of a seven-step staircase shape and an area which becomes a third step of a three-step staircase shape by a depth 2L; a second step of etching are... | 03/24/2009 |
| 7433125 | Light quantity distribution control element and optical apparatus using the same A light quantity distribution control element includes a substrate of 20 mm×20 mm×3 mm made of a material that transmits light, such as optical glass or acryl, and a antireflective structure provided on a surface of the substrate. As the antireflective structure, ... | 10/07/2008 |
| 7418202 | Article having a birefringent surface and microstructured features having a variable pitch or angles for use as a blur filter An optical low pass filter or blur filter, and method of making the filters, using an article having a birefringent surface for refracting incoming light when used with an image sensor. The birefringent surface of the article, such as a film, is structured or tilted... | 08/26/2008 |
| 7408712 | Polarization-selectively blazed, diffractive optical element A polarization-selectively blazed, diffractive optical element including multiple contiguous blaze structures extending along a given geometrical path. Each structure has a width perpendicular to direction of extension greater than the Wavelength of the electromagne... | 08/05/2008 |
| 7342659 | Cross-dispersed spectrometer in a spectral domain optical coherence tomography system A spectral-domain optical coherence tomography system using a cross-dispersed spectrometer is disclosed. The interfered optical signal is dispersed by a grating into several orders of diffraction, and these orders of diffraction are separated by an additional disper... | 03/11/2008 |
| 7310183 | Diffractive outcoupler for second harmonic generation A diffractive outcoupler, for use in a cavity of a laser, includes a surface phase grating for receiving radiation from a laser source and has rectangular grooves with a depth D, a first reflector located to receive a first diffracted portion of the radiation from t... | 12/18/2007 |
| 7298553 | Element for the combined symmetrization and homogenization of a bundle of beams The invention relates to an element for the combined symmetrization and homogenization of a beam of rays and to a method for designing an element of this type. One object of this invention is to propose an element and a corresponding design method by means of which ... | 11/20/2007 |
| 7280206 | Method and apparatus to improve the dynamic range of optical devices using spatial apodization Devices and methods for processing multi-wavelength light beams and the single-wavelength components of such light beams are disclosed. In accordance with some embodiments, a spectral filter includes collimating and focusing optical elements, an apodizing filter, a ... | 10/09/2007 |
| 7268948 | Optical element and optical scanning device using the same To obtain an optical element capable of obtaining uniform anti reflection characteristics over the whole optical surface having a finite curvature of the optical element, a plurality of convex optical pieces having an anti reflection function are provided on a surfa... | 09/11/2007 |
| 7262915 | Blazed diffractive optical element and projection objective for a microlithographic projection exposure apparatus A blazed diffractive optical element has a support and a plurality of blazed diffraction structures. The diffraction structures are applied on the support and are spaced apart by a locally varying grating constant. In a first region, the diffraction structures have ... | 08/28/2007 |
| 7252869 | Microtextured antireflective surfaces with reduced diffraction intensity A microstructured antireflective texture is disclosed comprised of an engineered array of protuberances arranged on a non-periodic lattice. The average distance between said protuberances is in the subwavelength regime of the waveband for which the antireflective ef... | 08/07/2007 |
| 7248770 | Photonic band structure devices The invention provides a photonic structure comprising a first region (3) formed from a material having a first refractive index; and an array of sub-regions (5) formed in the first region, each sub-region having a refractive index different to the fir... | 07/24/2007 |
| 7248351 | Optimizing light path uniformity in inspection systems An inspection system includes an illumination source configured to illuminate a blazed phase grating sample, image collection pathways and an imaging system configured to capture an image of a sample point of the blazed phase grating sample, and a controller configu... | 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 |
| 7245803 | Optical waveguide grating coupler An optical waveguide grating coupler for coupling light between a planar waveguide and an optical element such as an optical fiber. The optical waveguide grating coupler includes a grating comprising a plurality of elongate scattering elements. The optical waveguide... | 07/17/2007 |
| 7239448 | Light quantity distribution control element and optical apparatus using the same A light quantity distribution control element includes a substrate of 20 mm×20 mm×3 mm made of a material that transmits light, such as optical glass or acryl, and a antireflective structure provided on a surface of the substrate. As the antireflective structure, ... | 07/03/2007 |
| 7236302 | Diffraction optical element In a diffraction optical element in which a plurality of diffraction gratings are laminated and the maximum difference of length among optical paths of light passing through the plurality of diffraction gratins is integer multiples of a plurality of wavelengths, dif... | 06/26/2007 |
| 7232218 | Bifocal multiorder diffractive lenses for vision correction A bifocal multiorder diffractive lens having a lens body with one or more first regions having a first multiorder diffractive structure providing near vision correction, and one or more second regions having a second multiorder diffractive structure providing distan... | 06/19/2007 |
| 7227689 | Birefringence optical element and manufacturing method thereof A mask with an opening pattern is placed on a substrate, and etching is carried out by use of anisotropy etching of crystal. The opening pattern of the mask is composed of broken lines, each of which is discontinued by discontinuing portions. By the etching, a biref... | 06/05/2007 |
| 7209293 | Optical imaging system having an expand depth of field An optical imaging system, for example, for a surgical microscope (100) has a beam deflecting unit in order to cast light rays out of an object region (112) into an image plane (104) with an optical beam path. An optical phase plate (107)... | 04/24/2007 |
| 7195387 | Device and method for emitting light with increased brightness using diffractive grating pattern A device and method for emitting light with increased brightness utilizes a lamp having a diffractive grating pattern. The diffractive grating pattern diffracts incident light that originates from a light source toward a light output region of the lamp. The diffract... | 03/27/2007 |
| 7192175 | Backlighting light pipe for illuminating a flat-panel display A light pipe includes a surface provided with a pattern that has diffractive properties, where the pattern has uniform, mutually different areas on the surface such that some of the areas are configured to distribute light from a light input end of the light pipe to... | 03/20/2007 |
| 7184627 | Optical waveguide grating coupler incorporating reflective optical elements and anti-reflection elements An optical wavelength grating coupler incorporating one or more distributed Bragg reflectors (DBR) or other reflective elements to enhance the coupling efficiency thereof. The grating coupler has a grating comprising a plurality of scattering elements adapted to sca... | 02/27/2007 |
| 7184214 | Diffraction grating element, production method of diffraction grating element, and method of designing diffraction grating element In a diffraction grating element 10, between a first medium 11 and a fourth medium 14, a second medium 12 and a third medium 13 are disposed alternately to form a diffraction grating. The light, which enters the diffraction grating... | 02/27/2007 |
| 7164534 | Diffuser plate and method of making same An electromagnetic radiation diffuser, operative at extreme ultraviolet (EUV) wavelengths, is fabricated on a substrate. The diffuser comprises a randomized structure having a peak and valley profile over which a highly reflective coating is formed. The reflective c... | 01/16/2007 |
| 7149030 | Diffractive optical element and also optical arrangement comprising a diffractive optical element A diffractive optical element has a plurality of diffraction structures for a certain wavelength. These each have a width measured in the plane of the diffractive optical element and a height measured perpendicularly thereto. The widths and the heights of the diffra... | 12/12/2006 |
| 7149016 | Optical element and scanning optical system having the same and image forming apparatus An optical element that can reduce Fresnel (surface) reflection on a lens surface to be a cause of flare or ghost, and a scanning optical system having the same are provided. A microstructure grating is provided on at least one optical surface of the optical element... | 12/12/2006 |
| 7138156 | Filter design algorithm for multi-variate optical computing Within a method of making an optical interference filter, sample spectra and measurements of a predetermined characteristic associated with respective spectra are provided. Upon selection of an initial number of filter layers and a thickness for each layer, a transm... | 11/21/2006 |
| 7123415 | Optical instrument and optical element providing expanded exit pupil The invention provides an optical instrument including means (1, 2) to produce an optical image to be viewed by an observer including a diffractive element (7) located at an intermediate focal or image plane (4) of the optical instrument and com... | 10/17/2006 |
| 7123792 | Configurable aperiodic grating device The invention relates to the field of grating structures. The invention provides a longitudinal grating having an aperiodic structure, wherein the grating has a selected response characteristic and any repeated unit cell in the structure is significantly longer than... | 10/17/2006 |
| 7123844 | Optical computational system In optical filter systems and optical transmission systems, an optical filter compresses data into and/or derives data from a light signal. The filter way weight an incident light signal by wavelength over a predetermined wavelength range according to a predetermine... | 10/17/2006 |
| 7120108 | Objective lens and optical pickup device An objective lens to converge a light flux having a working reference wavelength λ0 (380 nm≦λ0≦450 nm) under a working reference temperature T0 onto an optical information recording medium equipped with a protective substrate h... | 10/10/2006 |
| 7116453 | Optical processor Method and apparatus are disclosed for optical packet decoding, waveform generation, and wavelength multiplexing/demultiplexing using a programmed holographic structure. A configurable programmed holographic structure is disclosed. A configurable programmed holograp... | 10/03/2006 |
| 7114820 | Backlighting light pipe for illuminating a flat-panel display The invention relates to a new light pipe (313) for providing backlighting (312) of a flat-panel display (311) by means of at least one light source so that the light pipe has at least one surface which comprises patterns. The patterns have diff... | 10/03/2006 |
| 7110180 | Diffraction grating, method of fabricating diffraction optical element, optical pickup device, and optical disk drive A diffraction grating with periodically arranged protrusions and grooves at a relatively narrow pitch and improved diffraction efficiency is disclosed. The protrusions of the grating are made of a material whose index of refraction is greater than that of the groove... | 09/19/2006 |
| 7102826 | Telecentric singlet having a small height requirement A single lens that has a small spot size across a large field of view and a small height. The lens has a first surface for performing color correction functions and a second surface for primarily performing light ray bending functions. The first surface has diffract... | 09/05/2006 |
