Abstract: An apparatus to treat refractive error of an eye comprises an electroactive component configured to switch between a light scattering or optical power providing configuration to treat refractive error of the eye and a substantially transparent configuration to allow normal viewing. The electroactive component can be located on the lens away from a central axis of the lens to provide light to a peripheral region of the retina to decrease the progression of myopia. The electroactive component can be located on the lens away from the central axis of the lens in order for the wearer to view objects through an optical zone while the electroactive component scatters light. The electroactive component can be configured to switch to the substantially transparent configuration to allow light to pass through the electroactive component and to allow the lens to refract light to correct vision and allow normal viewing through the lens.

Abstract: A body tissue observation lens includes a lens base having an integral polarizing filter. The body tissue observation lens has a 40% or higher average transmittance in a visible light wavelength range of 380 to 780 nm. The body tissue observation lens contains a specific wavelength light absorbing pigment such that the ratio of the minimum transmittance in a wavelength range of 580 to 600 nm to the average transmittance in the visible light wavelength range of 380 to 780 nm is 18 to 50%.

Abstract: A measurement instrument and method: produce light having a linear shape; direct the light toward an eye via a first lens located one focal length from the light source; provide returned light, having the linear shape, from the eye to a split-prism; split the returned light into first and second linear segments; image the first and second linear segments onto an image sensor; determine a first lateral offset between the first and second linear segments on the image sensor at a first time; determine a second lateral offset between the first and second linear segments on the image sensor at a second time; determine a difference between the first and second lateral offsets; and determine a distance that the eye moved relative to the first lens between the first time and the second time based on the difference between the first and second lateral offsets.

Abstract: An eyeglass frame configured to hold corrective lenses therein is removably engageable with a protective lens. The protective lens has connectors on opposing ends which are engageable with first and second mounts engaged to the frame. A gap is formed between the protective lens and the front surface of the frame and is maintained by the engagement of the connectors with the respective mounts.

Abstract: This disclosure provides spacers for smart windows. In one aspect, a window assembly includes a first substantially transparent substrate having an optically switchable device on a surface of the first substrate. The optically switchable device includes electrodes. A first electrode of the electrodes has a length about the length of a side of the optically switchable device. The window assembly further includes a second substantially transparent substrate a metal spacer between the first and the second substrates. The metal spacer has a substantially rectangular cross section, with one side of the metal spacer including a recess configured to accommodate the length of the first electrode such that there is no contact between the first electrode and the metal spacer. A primary seal material bonds the first substrate to the metal spacer and bonds the second substrate to the metal spacer.

Abstract: The present disclosure generally relates to methods and apparatus for accurate identification of the visual axis of the eye. In one embodiment, a visual axis identification system includes a fixation light source, a camera, a processing system, and a multifocal lens. The patient focuses their gaze through the multifocal lens and onto a fixation light beam provided by the fixation light source. The passage of the fixation light beam through the multifocal lens creates two or more images on or near to the patient's retina. The multifocal lens and/or the patient's eye are then moved relative to each other while the patient continuously maintains their gaze on the fixation light beam. The patient's visual axis may be located by determining the location of the optical center of the multifocal trial lens relative to the patient's eye when the centers of the multiple images coincide on the retina.

Abstract: The present invention relates to optical imaging systems which are able to provide increased depth of field to microscope devices, motion-picture cameras, and still photographic cameras. Optical systems described herein are able to provide the increased depth of field while maintaining wide field of view and reducing spherical aberration and distortion. Optical systems described herein are also able to be used with standard film and digital sensor formats, and are able to be attached to, or integrated with, photographic and motion-picture cameras, including currently existing cameras.

Abstract: A case for an eyewear device having a conductive interface includes a housing that receives the eyewear device. A multi-purpose interface, supported by the housing, includes at least one contact arranged to couple with the conductive interface of the eyewear device when the housing receives the eyewear device. Circuitry is coupled to the at least one contact and includes a processor that detects a connection of the conductive interface of the eyewear device to the multi-purpose interface of the case. The processor performs a charging process during a charge state of the case in which an electrical charge is provided at the multi-purpose interface of the case to the eyewear device. Data is exchanged with the eyewear device during a communication state of the case.

Abstract: The invention generally relates to optical filters that selectively attenuate the transmission of visible light for the purpose of enhancing or transforming the quality of human vision; to improved designs of such optical filters that provide an improved quality of color vision or of color perception; to methods of using such improved optical filters to enhance human vision during outdoor night time viewing conditions; to methods of using such improved optical filters to reduce the stimulation of the intrinsically photosensitive retinal ganglion cells (ipRGCs); to methods of using such improved optical filters to reduce the discomfort of glare; and to methods of using such improved optical filters to mitigate the symptoms of low vision or age-related visual impairments including for methods of treating or slowing the progression of persons with cone dystrophy including for persons with retinitis pigmentosa.

Abstract: Apparatus are described herein related to augmenting human vision by means of adaptive polarization filter grids. A preferred embodiment is described as smart sunglasses, realized as see through head mountable device (HMD) configured to reduce glare originating from polarized light. Each eyeglass of the HMD is associated with a grid comprising a plurality of dynamically configurable polarization filters placed in the path of the light. A polarization analyzer module analyzes the polarization characteristics of a field of view and performs an optimization calculation. The polarization analyzer controls the said grid via a controller module in such a way that the filter state of each grid element can be addressed separately. The grid of polarization filters causes the polarization characteristics of the incident light to be adapted in such a way as to reduce glare and/or to provide a user of the said head mountable device with an enhanced visual perception of the field of view.

Abstract: The present invention concerns an image conversion module (09) that comprises an optical interface (10) for establishing an optical path (07). The image conversion module (09) further comprises a beam splitting element (13) on the optical path (07). The beam splitting element (13) is configured for splitting a beam entering the optical interface (10, 11) on the optical path (07) into a first optical subpath (14) and a second optical subpath (16). The image conversion module (09) further comprises a microelectromechanical optical system (17) that is configured for enhancing a depth of field on the first optical subpath (14) that is directed to a first optoelectronic submodule (21). The image conversion module (09) further comprises a second optoelectronic submodule (24) having an electronic sensor (26) on the second optical subpath (16). The second optoelectronic submodule (24) is configured for acquiring additional data on the sample (02).

Abstract: A camera optical lens includes, from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. At least one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, or the eighth lens has a free-form surface, and the camera optical lens satisfies: 0.80?f6/f5?3.00; and ?6.00?R12/R11??2.50, where f5 denotes a focal length of the fifth lens, f6 denotes a focal length of the sixth lens, R11 denotes a central curvature radius of an object-side surface of the sixth lens, and R12 denotes a central curvature radius of an image-side surface of the sixth lens. The camera optical lens has a large aperture, a wide angle, and ultra-thinness, as well as excellent optical performance.

Abstract: An ophthalmic lens that includes a lens material having two opposing curved surfaces, the curved surfaces defining a lens axis; and a light scattering region surrounding a clear aperture. The clear aperture and the light scattering region are substantially centered on the lens axis, and the light scattering region has a plurality of spaced apart scattering centers (e.g., on a lens surface and/or embedded in the lens material) sized and shaped to scatter incident light, the scattering centers being arranged in a pattern that includes a random variation in spacing between adjacent dots and/or a random variation in dot size.

Abstract: Electrochromic devices with reflective structure and related manufacturing methods are provided. One of the electrochromic devices includes a bottom electrode layer, an electrochromic layer on the bottom electrode layer, an electrolyte layer on the electrochromic layer, a charge storage layer on the electrolyte layer, and a top electrode on the charge storage layer. The transmittance of the electrochromic device changes in response to a voltage applied between the bottom electrode layer and the top electrode layer. One of the bottom and the top electrode layers is a reflective conductive layer, while the other being a transparent conductive layer. This electrochromic device has a simplified structure due to the removal of a separated reflective film, which also results in simplified manufacturing process.

Abstract: An optical imaging system includes a first lens group that can move in an optical direction and has negative refractive power; a second lens group that can move in the optical direction and has positive refractive power; and a third lens group that can move in the optical direction and has negative refractive power. The first lens group, the second lens group, and the third lens group include seven lenses in total, and at least one of the seven lenses includes an aspherical surface.

Abstract: An electrochemical device is disclosed. The electrochemical device includes a first transparent conductive layer, an electrochromic layer overlying the first transparent conductive layer, a counter electrode layer overlying the electrochromic layer, a second transparent conductive layer, and a switching speed parameter of not greater than 0.68 s/mm at 23° C.

Abstract: According to some embodiments, a progressive addition lens includes a distance portion and a reading portion. The distance portion includes a fixed prism diopter power. The reading portion includes a fixed base in prism. The fixed base in prism comprises a diopter power between 0 to 10 diopters greater than the fixed prism diopter power of the distance portion.

Abstract: Conventional electrochromic devices frequently suffer from poor reliability and poor performance. Improvements are made using entirely solid and inorganic materials. Electrochromic devices are fabricated by forming an ion conducting electronically insulating interfacial region that serves as an IC layer. In some methods, the interfacial region is formed after formation of an electrochromic and a counter electrode layer, which are in direct contact with one another. The interfacial region contains an ion conducting electronically insulating material along with components of the electrochromic and/or the counter electrode layer. Materials and microstructure of the electrochromic devices provide improvements in performance and reliability over conventional devices. In addition to the improved electrochromic devices and methods for fabrication, integrated deposition systems for forming such improved devices are also disclosed.

Abstract: Electrochromic device laminates and their method of manufacture are disclosed.

Abstract: A lens that includes an electroactive region where an optical characteristic changes by electric control comprises: a transparent substrate; a second transparent substrate disposed facing the first transparent substrate; and an intermediate layer disposed between the first transparent substrate and the second transparent substrate; and including a mark including information.