Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8189260 | Color dividing optical device and image apparatus with the application A color dividing optical device has an integrated structure of dual surfaces, each has a micro/nano structure. The optical device can perform beam splitting and color dividing on an incident light source, which has a constitution from multiple different wavelengths.... | 05/29/2012 |
| 8189259 | Polarization independent grating A grating has a high diffraction efficiency into the minus first diffracted order in transmission, for both TE and TM polarizations. The incident angle may optionally be chosen so that the minus first diffracted order in reflection would be retroreflected back to th... | 05/29/2012 |
| 8159747 | Diffractive optical element and optical system including the same A diffractive optical element includes at least one element portion including a base, a diffraction grating, a substrate, and an intermediate layer. The base and the diffraction grating are disposed above the substrate through the intermediate layer, and are formed ... | 04/17/2012 |
| 8154803 | Diffractive optical element with improved light transmittance A diffractive optical element (10) includes a substrate (11), a protective film (13a, 13b), and a diffraction grating (12a, 12b) disposed between the substrate (11) and the protective film ... | 04/10/2012 |
| 8149510 | Diffractive optical element and method of making the same A diffractive optical element according to the present invention includes: a lens body 11 with a blazed grating 13 on an aspheric surface 11a thereof; and an optical adjustment layer 15 that covers the diffraction grating 13... | 04/03/2012 |
| 8120852 | Diffractive optical element, optical system, and optical apparatus The diffractive optical element includes a first diffraction grating and a second diffraction grating, which are formed of materials different from each other, the first diffraction grating and the second diffraction grating are stacked so as not to provide any air ... | 02/21/2012 |
| 8120851 | Optical material and optical element, diffraction optical element, and stacked type diffraction optical element molded thereof Use of an organic optical material whose Abbe's number (νd) and secondary dispersion (θg,F) satisfy the relationship θg,F≦−2νd×10−3+0.59 provides an optical material which causes reduced optical scattering, the optical material having excellent... | 02/21/2012 |
| 8116002 | Grating device with adjusting layer A reflection grating device with a continuous non-reflecting dielectric adjusting layer disposed between a grating structure and one or more continuous reflecting layers is disclosed that operates in an order of interest, such as the 1st order or 3rd... | 02/14/2012 |
| 8077392 | Composite optical element The present invention relates to composite optical elements, and particularly to a composite optical element in which second and third optical components are coupled to a first optical component. The present invention is advantageous in enhancing optical properties.... | 12/13/2011 |
| 8072684 | Optical device using laterally-shiftable diffraction gratings A double-sided grating divider acts as a light switch where the upper and lower grating dividers are arranged to accommodate a relative lateral shift therebetween of about one-fourth of the period of the diffraction grating elements and where the critical refraction... | 12/06/2011 |
| 8040607 | Surface-relief diffraction grating A bilayer transmission diffraction grating having antireflection lines having rectangular cross-section over grating lines having trapezoidal cross-section is described. The process-dependent grating line profile is accounted for by characterizing the grating line p... | 10/18/2011 |
| 7961393 | Selectively absorptive wire-grid polarizer A selectively absorptive, mulitlayer wire-grid polarizer for polarizing incident light includes a stack of thin film layers disposed over a substrate, including a wire-grid array of elongated metal elements having a period less than half the wavelength of the light.... | 06/14/2011 |
| 7957063 | Diffractive optical device, optical system using the diffractive optical device and method for manufacturing diffractive optical device A diffractive optical device 1 is composed of resins of different materials, and has a laminated structure, in which a second diffractive device element 20 is bonded between a first diffractive device element 10 and a third diffractive device el... | 06/07/2011 |
| 7916394 | Diffractive optical element and optical system using the same A diffractive optical element includes stacked first and second diffraction gratings made of different materials. The materials of the first and second diffraction gratings are glass. The first and second diffraction gratings have grating surfaces contacted to each ... | 03/29/2011 |
| 7885005 | Eyepiece system and optical device An eyepiece system has a lens group S1 in which a lens L1 having a negative refractive index and refractive power and a lens L2 having a positive refractive index and refractive power are joined, so that the lens group S1 as a whole has a... | 02/08/2011 |
| 7864427 | Diffractive optical element and method for manufacturing the same, and imaging apparatus using the diffractive optical element A diffractive optical element that can be molded readily, an imaging apparatus incorporating the diffractive optical element, and a method for manufacturing the diffractive optical element are provided. A diffractive optical element (10) includes a substrate ... | 01/04/2011 |
| 7821716 | Method for producing a multilayer body and corresponding multilayer body There is described a process for the production of a multi-layer body (100) having a partially shaped first layer (3m), wherein it is provided that in the process a diffractive first relief structure (4) with a high depth-to-width ratio o... | 10/26/2010 |
| 7821715 | Diffractive optical element A diffractive optical element 10 is constituted by sandwiching and closely bonding first and second optical element components 13, 14 which have different refractive indices and are adhered via a relief pattern 20, between third and fourth optic... | 10/26/2010 |
| 7710651 | Contacting two-layer diffractive optical element The diffractive optical element includes two diffraction gratings made of different materials and being in contact with each other at their grating surfaces. The materials satisfy the following conditions, and the second material is obtained by mixing a resin materi... | 05/04/2010 |
| 7710650 | Diffractive optical element and optical system having the same A diffractive optical element includes a plurality of layered diffraction gratings which includes two diffraction gratings made of materials having different dispersive powers. The plurality of diffraction gratings includes a first diffraction grating having a plura... | 05/04/2010 |
| 7688512 | Transmissive diffraction grating, and spectral separation element and spectroscope using the same A transmissive diffraction grating includes a substrate and a plurality of ridges provided in a mutually parallel manner at constant periodicity p on the substrate. The ridges include a first layer, a second layer (refractive index n2: 2.0-2.5), and a thi... | 03/30/2010 |
| 7667895 | Patterned structures with optically variable effects An optical structure includes a light transmissive substrate having a surface relief pattern applied thereon, such as a hologram. One or more layers can be patterned corresponding to materials playing the role of absorbers or reflectors on a Fabry-Perot type of opti... | 02/23/2010 |
| 7663803 | Laminated diffraction optical element A multi-layered diffraction optical element, comprises a transparent substrate, a first layer having a diffraction grating shape at least on one face and comprised of a relatively high refractive index and low dispersion material, and a second layer having a diffrac... | 02/16/2010 |
| 7612941 | Diffractive optical element and optical system including the same A diffractive optical element includes a plurality of diffraction gratings. A diffraction grating within the plurality of diffraction gratings includes a plurality of grating parts having a curved grating surface and grating tips which connect to define a curved env... | 11/03/2009 |
| 7554734 | Polarization independent grating A grating has a high diffraction efficiency into the minus first diffracted order in transmission, for both TE and TM polarizations. The incident angle may optionally be chosen so that the minus first diffracted order in reflection would be retroreflected back to th... | 06/30/2009 |
| 7554735 | Diffractive optical element and optical system including the same A diffractive optical element includes a plurality of diffraction gratings. A diffraction grating within the plurality of diffraction gratings includes a plurality of grating parts having a curved grating surface and grating tips which connect to define a curved env... | 06/30/2009 |
| 7554733 | Diffractive optical element and method for manufacturing same A diffractive optical element includes at least a first diffractive element and a second diffractive element. The conditional expression 0.5≦D/DS≦0.9 is preferably satisfied where DS denotes the summation of the optimum designed groove height of the first diffra... | 06/30/2009 |
| 7466487 | Light diffraction method and diffraction device, diffraction grating used for them, and position encoder device A principle of blazing that is effective even in the resonance domain. Light (51) is made incident on a diffraction grating so that specular resonance can occur in two or more light scattering units including, for example, bispheres (11a, 21 | 12/16/2008 |
| 7428100 | Wide-angle beam steering system A beam steering system having first diffraction gratings, each one being associated with a corresponding one of a first plurality of grating vectors disposed substantially in a first plane. The gratings diffract optical energy from any one of a plurality of input di... | 09/23/2008 |
| 7428101 | Optical retardation plate and method of manufacturing the same A dielectric substrate having a refractive index n1 is covered with an amorphous dielectric medium having a refractive index n2 larger than the refractive index n1, and a rectangular grating is formed in the amorphous dielectric medi... | 09/23/2008 |
| 7420735 | Transmission type diffraction grating A transmission diffraction optical element is presented in which ridges having a roughly rectangular cross-section shape are disposed parallel to each other at a regular pitch at the surface of a substrate. Striped thin-film layers are formed on these ridges and a t... | 09/02/2008 |
| 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 |
| 7379241 | High efficiency phase grating having a planar reflector An apparatus for processing electromagnetic radiation. The apparatus comprises a dielectric reflector, a plurality of ridges disposed on the dielectric reflector and a plurality of grooves disposed intermediate adjacent ridges to form a diffraction grating. Each of ... | 05/27/2008 |
| 7372623 | Multi-layer spectral purity filter, lithographic apparatus including such a spectral purity filter, device manufacturing method, and device manufactured thereby A multi-layered spectral purity filter improves the spectral purity of extreme ultra-violet (EUV) radiation and also collects debris emitted from a radiation source. ... | 05/13/2008 |
| 7371562 | Guided mode resonant filter biosensor using a linear grating surface structure Methods and compositions are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also provides optical devices useful as narrow band filters. ... | 05/13/2008 |
| 7369186 | Polarizing beam splitter featuring stacked grating layers and display including the same A polarizing beam splitter includes a polarization splitting layer which includes stacked one-dimensional grating layers. The grating layers can include alternating layers of at least one H layer having an effective refractive index nH for p-polarized lig... | 05/06/2008 |
| 7349158 | Diffraction grating-based encoded micro-particles for multiplexed experiments Microparticles 8 includes an optical substrate 10 having at least one diffraction grating 12 disposed therein. The grating 12 having a plurality of colocated pitches Λ which represent a unique identification digital code that is detected... | 03/25/2008 |
| 7327454 | Method and apparatus for detecting biomolecular interactions Method and apparatus for detecting biomolecular interactions. The use of labels is not required and the methods may be performed in a high-throughput manner. An apparatus for detecting biochemical interactions occurring on the surface of a biosensor includes a light... | 02/05/2008 |
| 7319559 | Spectral optical element The present invention targets a spectral optical element that outputs a light inputted at a predetermined incident angle to a predetermined direction depending on its wavelength. A spectral optical element according to the present invention includes a transmission d... | 01/15/2008 |
| 7312090 | Label-free methods for performing assays using a colorimetric resonant reflectance optical biosensor Methods are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also relates to optical devices. ... | 12/25/2007 |
