Abstract: A method is provided for characterizing manufacturing variations in a camera and imperfections in its operating environment to allow images captured by the camera to be compensated for these defects. In one embodiment, a method for characterizing a camera includes: (a) illuminating a field of view of the optical elements under a controlled condition; (b) exposing multiple images onto the image sensor under the controlled condition; (c) extracting parameter values of a model for the image provided on the image sensor from the multiple images; and (d) compensating images taken subsequently in the camera using the parameter values. The objects in the field of view may have a predetermined color, contrast or pattern. In one instance, the controlled condition includes an external light source for illuminating the field of view, and the image sensor is sensitive to a plurality of color components. The field of view may be illuminated at a predetermined light intensity for each of the color components.
Abstract: A component including a substrate, at least one layer including a color conversion material including quantum dots disposed over the substrate, and a layer including a conductive material (e.g., indium-tin-oxide) disposed over the at least one layer. (Embodiments of such component are also referred to herein as a QD light-enhancement substrate (QD-LES).) In certain preferred embodiments, the substrate is transparent to light, for example, visible light, ultraviolet light, and/or infrared radiation. In certain embodiments, the substrate is flexible. In certain embodiments, the substrate includes an outcoupling element (e.g., a microlens array). A film including a color conversion material including quantum dots and a conductive material is also provided. In certain embodiments, a component includes a film described herein. Lighting devices are also provided. In certain embodiments, a lighting device includes a film described herein.
Abstract: A smoke detecting method which uses a beam of radiation such as a laser (16), to monitor a region, such as a room (12). A camera (14) is used to capture images of part of the room (12), including a path of the laser beam. Particles in the laser beam scatter light (30), and this is captured by the camera (14) for analysis. A processor (20) extracts data relating to the scattered light (30) to determine the density of particles in the beam, to determine the level of smoke in the region. The laser may have a modulated output (38) so that images captured without the laser tuned “on” can be used as a reference point and compared to images taken with the laser turned “on”, to assist in determining the level of scattered light (30) compared to ambient light. Filters (24, 26) may be used to decrease signals generated from background light.
Type:
Grant
Filed:
June 20, 2011
Date of Patent:
March 26, 2013
Assignee:
Vision Fire & Security Pty Ltd
Inventors:
Ron Knox, Karl Boettger, Peter Meikle, Brian Alexander
Abstract: A semiconductor nanocrystal capable of emitting blue light upon excitation. Also disclosed are devices, populations of semiconductor nanocrystals, and compositions including a semiconductor nanocrystal capable of emitting blue light upon excitation. In one embodiment, a semiconductor nanocrystal capable of emitting blue light including a maximum peak emission at a wavelength not greater than about 470 nm with a photoluminescence quantum efficiency greater than about 65% upon excitation. In another embodiment, a semiconductor nanocrystal includes a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the semiconductor nanocrystal is capable of emitting blue light with a photoluminescence quantum efficiency greater than about 65% upon excitation.
Type:
Grant
Filed:
May 21, 2009
Date of Patent:
March 26, 2013
Assignee:
QD Vision, Inc.
Inventors:
Craig Breen, Jonathan S. Steckel, Dorai Ramprasad
Abstract: An ophthalmic apparatus for precisely positioning an optical instrument, such as a wavefront aberrometer, in three dimensions with respect to a patient's eye. The ophthalmic apparatus may include an optical instrument directed in a first direction toward a target area to receive light therefrom and a camera directed in a second direction toward the target area to receive light therefrom, the first and second directions being non-parallel. The camera may include imaging optics to form an optical image on a photodetector array using light reflected from the target area. The ophthalmic apparatus may also include a processor configured to correlate a position of the optical image on the photodetector array with the distance between the optical instrument and the target area.
Type:
Application
Filed:
September 14, 2012
Publication date:
March 21, 2013
Applicant:
WAVETEC VISION SYSTEMS, INC.
Inventors:
Richard J. Michaels, Max Hall, Diego Cueto, T. Scott Rowe, Thomas Padrick
Abstract: In a first exemplary embodiment of the present invention, an automated, computerized method is provided for processing an image. According to a feature of the present invention, the method comprises the steps of providing an image file depicting an image, in a computer memory, providing a multi-class classifier trained to identify edges in an image relative to computer actions to be taken in respect to the respective edges, determined as a function of illumination effects in the image and utilizing the multi-class classifier to classify edges in the image, for identification of computer actions to be taken in respect to the edges in the image.
Abstract: A lighting device comprising a support for optical modules able to make a rotation movement, comprising a first optical module able to generate a light beam exhibiting a cutoff of the dipped beam type; a second optical module able to generate a light beam exhibiting a substantially L-shaped cutoff; the first optical module and the second optical module of the first lighting device being disposed on the optical module support able to make a rotation movement.
Type:
Grant
Filed:
June 9, 2010
Date of Patent:
March 19, 2013
Assignee:
Valeo Vision
Inventors:
Pierre Albou, Vanesa Sanchez, Jonathan Blandin
Abstract: The invention provides silicone hydrogel contact lenses that exhibit reduced back surface debris and reduced incidence of superior epithelial arcurate lesions.
Type:
Grant
Filed:
September 23, 2010
Date of Patent:
March 19, 2013
Assignee:
Johnson & Johnson Vision Care, Inc.
Inventors:
Robert B. Steffen, David C. Turner, Douglas Vanderlaan
Abstract: In one aspect, the invention relates to silicon-based prepolymers. The disclosed prepolymers exhibit satisfactory solubility in aqueous solutions or hydrophilic solutions and can overcome undesirable shrinkage, expansion, and related problems possessed by conventional silicone monomers and related conventional polymerization techniques by producing hydrogels from a crosslinkable prepolymer. Also disclosed are polymers and molded articles produced from the disclosed prepolymers, which attain a satisfactory oxygen permeability. Also disclosed are methods for producing the disclosed prepolymers. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
Type:
Grant
Filed:
November 19, 2011
Date of Patent:
March 19, 2013
Assignees:
Johnson & Johnson Vision Care, Inc., Toray Industries, Inc.
Abstract: An optical comparator arranged for rear projection onto a viewing screen combines an optical projector that projects an optical image of a test part under inspection onto the viewing screen with a video projector that projects an optical image of a pixilated template pattern containing illustrated specifications of the test part onto the same viewing screen. The images of the test part and the pixilated template pattern are projected concurrently onto the viewing screen for visually comparing the form of the test part against its specified form.
Abstract: The present invention relates to a solid printing ink composition, comprising at least one organic compound with a melting point of at least 40° C. and a molecular weight of less than 1000 g/mol, wherein the organic compound is selected from an ester, an ether or an amide, a resin, and a dye and/or a pigment.
Abstract: The invention concerns a method for manufacturing a template with at least one opening to drill through so as to create an appropriate bore hole in the bone of an at least partially toothless lower or upper jaw so as to fix an implant in said bone.
Abstract: The invention provides methods for designing contact lenses and contact lenses designed according to the method, which lenses provide an improved method for presbyopia correction compared to conventional lenses and methods. It is a discovery of the invention that improved performance and reduced design time can be obtained by using lens pairs that act synergistically to provide the lens wearer with good binocularity and consistent performance in near, intermediate and distance vision.
Type:
Grant
Filed:
May 27, 2010
Date of Patent:
March 12, 2013
Assignee:
Johnson & Johnson Vision Care, Inc.
Inventors:
C. Benjamin Wooley, James W. Haywood, Ronald Clark, Thomas Karkkainen, Susan W. Neadle, Sheila B. Hickson-Curran
Abstract: A wavefront sensor is integrated with a surgical microscope for allowing a doctor to make repeated wavefront measurements of a patient's eye while the patient remains on an operating table in the surgical position. The device includes a wavefront sensor optically aligned with a surgical microscope such that their fields of view at least partially overlap. The inclusion of lightweight, compact diffractive optical components in the wavefront sensor allows the integrated device to be supported on a balancing mechanism above a patient's head during a surgical procedure. As a result, the need to reposition the device and/or the patient between measuring optical properties of the eye and performing surgical procedures on the eye is eliminated. Many surgical procedures may be improved or enhanced using the integrated device, including but not limited to cataract surgery, Conductive Keratoplasty, Lasik surgery, and corneal corrective surgery.
Type:
Grant
Filed:
February 4, 2011
Date of Patent:
March 12, 2013
Assignee:
WaveTec Vision Systems, Inc.
Inventors:
Anthony Y. Van Heugten, Daniel S. Durrie
Abstract: An assembly includes a light-permeable film layer, a release liner, and a print pattern. The print pattern includes a base layer. The print pattern sub-divides the film layer into a plurality of discrete base layer areas and/or a plurality of transparent areas. The base layer includes a design imaging surface of a first color. The release liner includes an imperforate material. The release liner includes a release surface. The imperforate material when viewed through said light permeable film layer is a second color contrasting with said first color by the graytone of said second color differing from the graytone of said first color by at least 10%. This contrast may provide a more realistic perception of how the assembly will look in situ (e.g., on a window).
Abstract: A headlight for a motor vehicle, in order to provide a cut-off light beam, comprising: a collector mirror of an ellipsoidal type with an optical axis; a source of light (S) placed in the vicinity of the inner focal point of the collector mirror; a substantially flat bender, the reflective surface of which is oriented towards the interior of the collector mirror, and has an edge which is situated in the vicinity of the other focal point of the collector mirror, and a lens, situated to the front of the collector mirror and the bender, in order to provide an image of the edge of the bender.
Abstract: The present invention provides apparatus for dispensing ophthalmic lens packages. A plurality of ophthalmic lens packages are loaded into the apparatus and the apparatus determines an identity of each ophthalmic lens package. A housing stores the ophthalmic lens packages and records a location and identity of each of the lens packages and dispenses a particular ophthalmic lens package.
Type:
Grant
Filed:
December 16, 2009
Date of Patent:
March 5, 2013
Assignee:
Johnson & Johnson Vision Care, Inc.
Inventors:
Daniel T. Wang, Edward R. Kernick, Hamid A. Darabi, Francis E. Mirmina, Gerhard Andrew Foelsche, David Logan Baker, Breck Andrew Petrillo, Carl B. Dumas, Son Minh Luong, Benjamin Beaugh, Christopher T. Zirps
Abstract: In a first exemplary embodiment of the present invention, an automated, computerized method is provided for processing an image. According to a feature of the present invention, the method comprises the steps of providing an image file depicting an image, in a computer memory, performing an image segregation operation on the image file to generate a set of intrinsic images corresponding to the image, modifying a preselected one of the set of intrinsic images according to a set of preselected operations and merging the modified one of the set of intrinsic images relative to the set of intrinsic images to provide a modified output image.
Type:
Grant
Filed:
April 30, 2009
Date of Patent:
March 5, 2013
Assignee:
Tandent Vision Science, Inc.
Inventors:
Richard Mark Friedhoff, Casey Arthur Smith, Bruce Allen Maxwell, Neil Alldrin, Steven Joseph Bushell, Timothy King Rodgers, Jr.
Abstract: A lighting module giving a cut light beam, including a concave reflector, at least one light source (S) arranged in the concavity of the reflector, and a lens situated in front of the reflector which is associated with a bender, the top side of which is reflecting. The bender has an edge of front end such as to form the cut in the light beam; the front edge of the bender is formed by a flat curve of variable curvature, the curve in a point (M) being a continuous function of the lateral coordinate (x) of this point. The reflector is determined to transform the wave surface originating from the source into a wave surface leading to the curve of variable curvature of the edge of the bender, and lens is determined to give an image to infinite from point (M) of edge of the bender.