| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 359575000 | With nonuniform corrugation width, spacing, or depth | 16 |
| 20080198468 | Grid Image and Method For the Production Thereof - The present invention relates to a grating image ( | 08-21-2008 |
| 20090091834 | METHOD OF CREATING A THREE-DIMENSIONAL IMAGE, A DIFFRACTIVE ELEMENT AND METHOD OF CREATING THE SAME - The invention discloses a diffractive device and a method of creating the same displaying a three-dimensional preferably achromatic image, especially imitating a real or an imaginary relief scene, a flat microrelief or otherwise modulated structure ( | 04-09-2009 |
| 20090097122 | Diffractive Optical Device and System - An optical relay device for transmitting light striking the optical relay device at a plurality of angles within a field-of-view is provided. The device comprises a light-transmissive substrate, an input optical element and an output optical element. The input element diffracts the light to propagate within the light-transmissive substrate via total internal reflection, and the output element diffracts the light out of the substrate. The output element is characterized by planar dimensions selected such that at least a portion of one or more outermost light rays within the field-of-view is directed to a two-dimensional region being at a predetermined distance from the substrate. | 04-16-2009 |
| 20090128911 | Diffraction Grating With a Spatially Varying Duty-Cycle - A diffractive optical element is disclosed. The optical element comprises a grating having a periodic linear structure in at least one direction. The linear structure is characterized by non-uniform duty cycle selected to ensure non-uniform diffraction efficiency. | 05-21-2009 |
| 20100246007 | COMPOSITION INCLUDING AN ITEM AND AN ENCODED OPTICAL SUBSTRATE AND A METHOD FOR IDENTIFYING AN ITEM - A method and apparatus for drug product tracking (or other pharmaceutical, health care or cosmetics products, and/or the packages or containers they are supplied with) using diffraction grating-based encoded optical identification elements | 09-30-2010 |
| 20100284085 | BEAM EXPANSION WITH THREE-DIMENSIONAL DIFFRACTIVE ELEMENTS - The specification and drawings present a new apparatus and method for using a three-dimensional (3D) diffractive element (e.g., a 3D diffractive grating) for expanding in one or two dimensions the exit pupil of an optical beam in electronic devices. Various embodiments of the present invention can be applied, but are not limited, to forming images in virtual reality displays, to illuminating of displays (e.g., backlight illumination in liquid crystal displays) or keyboards, etc. | 11-11-2010 |
| 20110038049 | METHOD FOR DESIGNING A DIFFRACTION GRATING STRUCTURE AND A DIFFRACTION GRATING STRUCTURE - According to the present invention, the method for designing a diffraction grating structure ( | 02-17-2011 |
| 20110222156 | Diffractive Element for Optical Pickup and Optical Module Including the Same - Provided are a diffractive element for optical pickup and an optical module including the diffractive element. The diffractive element includes a plurality of diffraction patterns, and the diffraction patterns include a main diffraction pattern for creating diffraction characteristics, and an alignment mark pattern for recognizing an alignment position, the alignment mark pattern having a different pitch from the main diffraction pattern. Also, the pitch of the alignment mark pattern is formed smaller than that of the main diffraction pattern. Further, a ratio of the pitch of the alignment mark pattern to that of the main diffraction pattern is ⅛ or greater to ½ or less. | 09-15-2011 |
| 20120105962 | NON-PERIODIC GRATING REFLECTORS WITH FOCUSING POWER AND METHODS FOR FABRICATING THE SAME - Aspects of the present invention are directed to flat sub-wavelength dielectric gratings that can be configured to operate as mirrors and other optical devices. In one aspect, a grating layer ( | 05-03-2012 |
| 20120314292 | OPTICAL DEVICE FORMED OF AN ARRAY OF SUB-WAVELENGTH GRATINGS - An optical device includes a substantially planar substrate and a lens array disposed on the substantially planar substrate. The lens array is formed of a plurality of distinct sub-wavelength gratings, in which the sub-wavelength gratings are selected to produce a desired phase change in beams of light that are at least one of reflected and refracted by the sub-wavelength gratings of the lens array. | 12-13-2012 |
| 20130148203 | GENERATION OF SHORT-WAVE ULTRASHORT LIGHT PULSES AND USE THEREOF - Extremely ultrashort and short-wave light pulses are generated with the aid of the traveling-wave Thomson scattering process. Dispersive elements are arranged between an electron, particle, or radiation source, which is synchronized with a laser system, and an optical element that focuses in a direction. The device is used to superpose a pulse-front tilted light pulse of high power with an ultrashort pulse of relativistic electrons in a laser-line focus. By varying the laser pulse-front tilt, narrow-band radiation pulses in a wide wavelength range from EUV to X-ray wavelengths and having a high number of protons are obtained, and the bandwidth and coherence properties can also be modified. The system can be used, among other things, in EUV lithography, in the planning and optimal design of laser systems and electron sources, in material analysis by phase contrast imaging, and in superconductor research. The assembly is smaller and cheaper than current comparables. | 06-13-2013 |
| 20140104686 | STRUCTURE, STRUCTURE-FORMING METHOD, AND STRUCTURE-FORMING DEVICE - A structure has a processed part formed by the occurrence of photodisintegration attributed to the application of pulsed laser light. A fine periodic composition in which a plurality of processed parts are arranged in the form of grid cross points is formed in one region of the structure. A large number of regions are arranged in the structure. Each of a plurality of ranges obtained by the division of a surface in which the regions are arranged is a region-forming range. One or more regions are arranged in one region-forming range, and the arrangement directions of the processed parts formed in each of the large number of regions vary according to the region-forming ranges. | 04-17-2014 |
| 20140376093 | Diffractive Optical Element and Optical Device Having the Same - There are provided a diffractive optical element in which a diffraction pattern is formed on at least one surface, wherein a height of the diffraction pattern changes from a center to an edge of the one surface, and a height of a first diffraction pattern element formed at the center and a height of a second diffraction pattern element formed at the edge are different, and an optical device having the same. | 12-25-2014 |
| 20150370066 | Imaging System With Optimized Extended Depth of Focus - An optical processor is presented for applying optical processing to a light field passing through a predetermined imaging lens unit. The optical processor comprises a pattern in the form of spaced apart regions of different optical properties. The pattern is configured to define a phase coder, and a dispersion profile coder. The phase coder affects profiles of Through Focus Modulation Transfer Function (TFMTF) for different wavelength components of the light field in accordance with a predetermined profile of an extended depth of focusing to be obtained by the imaging lens unit. The dispersion profile coder is configured in accordance with the imaging lens unit and the predetermined profile of the extended depth of focusing to provide a predetermined overlapping between said TFMTF profiles within said predetermined profile of the extended depth of focusing. | 12-24-2015 |
| 20160033697 | MICROFABRICATION - Microfabrication processes and apparatuses for fabricating microstructures on a substrate are disclosed. The substrate has a current diffraction grating pattern formed by current surface modulations over at least a portion of the substrate's surface that exhibit a substantially uniform grating linewidth over the surface portion. An immersion depth of the substrate in a fluid for patterning the substrate is gradually changed so that different points on the surface portion are immersed for different immersion times. The fluid changes the linewidth of the surface modulations at each immersed point on the surface portion by an amount determined by the immersion time of that point, thereby changing the current diffraction grating pattern to a new diffraction grating pattern formed by new surface modulations over the surface portion that exhibit a spatially varying grating linewidth that varies over the surface portion. | 02-04-2016 |
| 20160077250 | METHOD OF MANUFACTURING A MEMBER, OPTICAL MEMBER AND OPTICAL ELEMENT - An optical member having a concentric diffraction surface facing the outside, wherein the projection having a inclined surface concentric to the diffraction surface having an angle of inclination θ smaller than the angle of inclination φ is provided outside the diffraction surface having the largest φ, so that an interference of a cutting tool is avoided, and simultaneously, deterioration of a surface roughness may be restrained. | 03-17-2016 |
