Abstract: The present invention provides ophthalmic devices comprising at least one photochromic material which is an indeno-fused naphthopyran having a pi-conjugation extending group bonded to the 11-position of the indeno-fused naphthopyran, the pi-conjugation extending group having at least one pendent halo-substituted group bonded thereto. The pi-conjugation extending group extends the pi-conjugation system of said indeno-fused naphthopyran. The 13-position of the indeno-fused naphthopyran is substantially free of spiro-substituents. The invention further provides photochromic materials of specified structure, photochromic compositions, photochromic articles and optical elements that include the photochromic materials. Other non-limiting embodiments relate to methods of making the ophthalmic devices comprising photochromic materials.

Abstract: This invention describes Ophthalmic Devices with media inserts that have photonic elements upon or within them. In some embodiments passive ophthalmic devices of various kinds may be formed. Methods and devices for active ophthalmic devices based on photonic based projection systems may also be formed.

Abstract: An auxiliary prescription label is provided for print-impaired individuals, such as blind and vision-impaired individuals. The auxiliary label is affixed to a prescription receptacle and does not permanently obscure the primary prescription label. The auxiliary label includes a book attached to a clip. The book is formed by a strip of printed material. The strip is folded to form the book and at least one stack of apertures is provided therethrough. The clip includes a base having at least one ear extending therefrom. The ear(s) are bent relative to the base to pass the ear(s) through the aperture(s), and the ear(s) are thereafter secured to the base. An adhesive secures the auxiliary label to the prescription receptacle.

Abstract: An optical component including an optical material comprising quantum confined semiconductor nanoparticles, wherein the optical material has a solid state photoluminescent efficiency greater than or equal to 60%. Devices including optical materials and/or optical components and methods are also disclosed.

Abstract: Provided are a common voltage adjustment circuit for a display panel and a display apparatus. The adjustment circuit comprises: a filter unit (101) configured to filter a PWM signal provided externally and provide a DC voltage signal obtained through the filtering to a first voltage clamp unit; a first voltage clamp unit (102) configured to adjust the DC voltage signal to obtain a first adjusted signal and provide the first adjusted signal to a feedback amplification unit; a feedback amplification unit (103) configured to amplify the first adjusted signal to obtain a first amplified signal and provide the first amplified signal to a second voltage clamp unit; and a second voltage clamp unit (104) configured to adjust the first amplified signal to output a second adjusted signal and provide the voltage value of the second adjusted signal to the display panel.

Abstract: A method and system for detecting and classifying defects in a paved surface is disclosed. A sequence of images of the paved surface is obtained from at least one imaging device that can be mounted on a vehicle. The images are used to form a three-dimensional reconstruction. A machine learning process is used to train the system to recognize different kinds of defects and defect-free surfaces. Performing a pixel-by-pixel comparison of the images obtained for a particular paved surface with a database of images of surfaces with known defects provides a determination of the locations of defects in that paved surface. The system and method disclosed herein do not require the use of artificial lighting and are unaffected by transient changes in ambient light.

Abstract: A method of making a spectacle lens providing at least an astigmatic correction includes measuring a direction of an axis of an astigmatism of an eye for each of three different directions of gaze of the eye. Thereafter, a position of the spectacle lens is determined relative to the eye. A shape of a surface of the spectacle lens is computed based on the determined position of the spectacle lens relative to the eye and the at least three measured directions of the axis of the astigmatism. A primary orientation of the eye is determined based on the three measured directions of the axis of the astigmatism. The shape of the surface of the spectacle lens is calculated based on the determined position of the spectacle lens relative to the eye and by applying Listing's Law based on the determined primary orientation of the eye.

Abstract: A camera mount for mounting a camera inside a windshield of a vehicle. The camera includes a lens mount and a camera housing. The front tip of the lens mount is constrained to be in close proximity to or constrained to contact the inside of the windshield for different rake angles of the windshield.

Abstract: A method of using a computer to generate virtual autostereoscopic images from a three-dimensional digital data set is provided. The method includes establishing a first point of view and field of view of a subject volume including a region of interest. The method also includes reading at least one scene parameter associated with the field of view of the subject volume. The method also includes determining a second point of view offset some distance and along some vector from the first point of view based on a value derived from at least one scene parameter. The method also includes generating and storing images and relevant metadata from said first and second points of view. The method also includes displaying the stored images by alternatingly displaying stored images from said first and second points of view. The method further includes performing one or more transformations on the alternatingly displayed images.

Abstract: A head positioning device for use in radio therapy is described for positioning a patient's head. The head positioning device comprises a head plate for supporting a patient's head; a base plate for connection to a mechanical couch; and a head plate adjustment assembly connecting the head plate to the base plate wherein the head plate adjustment assembly is arranged to vary the relative pitch, yaw and roll of the head plate relative to the base plate. The head positioning device is arranged to be attached to a mechanical couch with the head plate and the head plate adjustment assembly cantilevered off the end of the couch and the head plate adjustment assembly suspended beneath the head plate and the base plate.

Abstract: The present invention relates to a polymers and hydrogels comprising a sulfonic acid component formed from reactive components comprising (i) at least one hydrophobic monomer and (ii) at least one sulfonic acid-containing component, wherein the sulfonic acid-containing component is comprised of a salt formed by a non-polymerizable, hydrophilic base and a polymerizable sulfonic acid. One or more embodiments provide that the at least one hydrophobic monomer comprises a silicone component.

Abstract: This invention provides for a method and a wavefront measuring apparatus used to measure, in one or continuous measurements, one or more ophthalmic devices directly on a forming mandrel, in non-hydrated state and in a much faster way with high spatial resolution.

Abstract: A system and method for coating an optical lens by, for example vapor deposition, that employs a housing or drum having a plurality of apertures that each receives a lens holder assembly. The lens holding assembly configured to hold a standard, uncut optical lenses or lens blanks or, alternatively, to hold cut, non-standard shaped and sized optical lenses.

Abstract: The present invention provides a method for manufacturing a photochromic article having a photochromic compound containing layer. The method includes the step of coating a casting face of at least one mold section with a photochromic host layer. The photochromic host layer is treated to minimize damage during subsequent steps, and a mold is then assembled so that it includes the mold section having the photochromic host layer. The mold is then filled with a photochromic article monomer composition and the monomer composition is subsequently cured to form a photochromic article substrate adhered to the photochromic host layer. The photochromic compound is introduced into the photochromic host layer.

Abstract: Systems and methods use cameras to provide autonomous navigation features. In one implementation, a method for navigating a user vehicle may include acquiring, using at least one image capture device, a plurality of images of an area in a vicinity of the user vehicle; determining from the plurality of images a first lane constraint on a first side of the user vehicle and a second lane constraint on a second side of the user vehicle opposite to the first side of the user vehicle; determining, based on the plurality of images, whether an encroaching vehicle is approaching from a side of the user vehicle; and causing the user vehicle to maintain a current velocity and to travel within the first and second lane constraints such that a first distance, on the side of the user vehicle that the encroaching vehicle is approaching from, is greater than a second distance.

Abstract: The present invention is directed to a method for designing a soft contact lens with semi-customized back surface including determining axial radius topography data for a plurality of eyes of a specific population; calculating an apical radius and a conic constant distribution from the axial radius data; determining apical radius and conic constant values for an individual subject; selecting a subset of base curves from a base curve library based on the individual subject's apical radius and conic constant values; and selecting a final base curve from the subset of base curves that fits the individual subject's needs based on one or more selection criteria.

Abstract: Retinal prostheses are configured to apply retinal stimulus signals based on retinal cell classification such as cell types or cell clusters identified based on retinal cell signals. Cell types are identified based on spontaneous or induced retinal electrical signals and analyzed based on temporal patterns of electrical activity, spatio-temporal voltage waveforms, and signal correlations that can be obtained from temporal spike patterns. Cell type indications are stored, and a signals are applied to the retina based on the stored cell type indications.