Abstract: An optical image capturing system comprising, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element with negative refractive power has a concave image-side surface. The second lens element, the third lens element and the fourth lens element have refractive power. The fifth lens element has refractive power. The sixth lens element with refractive power has an image-side surface being concave in a paraxial region and includes at least one convex shape in an off-axial region, wherein the surfaces thereof are aspheric. The seventh lens element with refractive power has an image-side surface being concave in a paraxial region and includes at least one convex shape in an off-axial region, wherein the surfaces thereof are aspheric.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The first lens has positive refractive power and a convex image-side surface. The second lens has negative refractive power. The third lens has negative refractive power. The fourth lens has negative refractive power and an inflection point formed on an image-side surface thereof. The fifth lens has positive refractive power and a convex image-side surface.

Abstract: An ophthalmic apparatus that may include a processor; and a memory storing computer-readable instructions therein, the computer-readable instructions, when executed by the processor, causing the ophthalmic apparatus to perform: acquiring a two-dimensional tomographic image of the subjected eye; calculating a preoperative shape of the subjected eye based on a preoperative two-dimensional tomographic image of a preoperative subjected eye acquired by the acquiring of the two-dimensional tomographic image; calculating a postoperative shape of the subjected eye based on a postoperative two-dimensional tomographic image of a postoperative subjected eye acquired by the acquiring of the two-dimensional tomographic image; and calculating a displacement amount between a first reference axis obtained from the preoperative two-dimensional tomographic image of the preoperative subjected eye and a second reference axis obtained from the postoperative two-dimensional tomographic image of the postoperative subjected eye, bas

Abstract: The present subject matter relates to display control in display devices. In an example implementation, a display control layer for a display device comprises a first set of channels filled with a first electrochromic material to control a view angle of a display from the display device, and a second set of channels filled with a second electrochromic material to control absorption of blue/ultraviolet (UV) light from the display device. Each adjacent pair of channels of the second set sandwiches a channel of the first set.

Abstract: Some demonstrative embodiments include apparatuses, systems and/or methods of determining one or more optical parameters of a lens of eyeglasses. For example, a product may include one or more tangible computer-readable non-transitory storage media including computer-executable instructions operable to, when executed by at least one computer processor, enable the at least one computer processor to implement operations of determining one or more optical parameters of a lens of eyeglasses. The operations may include processing at least one image of an object captured via the lens; and determining the one or more optical parameters of the lens based on the at least one image.

Abstract: The invention relates to an optical device, comprising: a lens having an adjustable focal length. According to the invention, a light source which is configured to emit light that is affected by said lens and impinges on at least a first photosensitive element, which is designed to generate a first output signal corresponding to the intensity of light impinging on it, wherein the first photosensitive element is configured to measure only a portion of the intensity distribution of said emitted light, and wherein the light source, the lens and the first photosensitive element are configured such that a change of the focal length of said lens changes the intensity distribution of the emitted light that impinges on the first photosensitive element, so that each focal length of the lens is associated to a specific first output signal generated by the first photosensitive element.

Abstract: The system allows one with no prior training in refraction to subjectively screen, measure, and correct for their own refractive error without the assistance of a second person through subjective self-refraction (SSR). One accomplishes SSR by interacting with refractor input controls, which manipulate lenses in front of their eye(s). The SSR process is accomplished via pre-programming, allowing for direct feedback between the system and user from sensory cues that are prompted by interacting with the input controls. The resulting health data may be displayed or transmitted to the user or another individual for later use. The refraction process may incorporate remote data management technology and computer network capabilities that provides for efficiency, improved accuracy, cost savings and user experience enhancement and may allow for greater access to vision correction services for many people.

Abstract: An optical coherence tomography (OCT) apparatus according to an embodiment is configured to split light from a light source into measurement light and reference light, project the measurement light on an object, and detect interference light generated from the reference light and the measurement light returning from the object. The OCT apparatus includes a dispersion unit and an information generation unit. The dispersion unit is configured to relatively change a dispersion characteristic of a measurement optical path which is an optical path of the measurement light and a dispersion characteristic of a reference optical path which is an optical path of the reference light, according to an operation mode corresponding to a depth range. The information generation unit is configured to generate information on the object according to the operation mode, based on a detection result of the interference light.

Abstract: An optical assembly that is designed for positioning in a beam path of a light microscope having means for providing structured illuminating light in a sample plane of the light microscope, so that structured illuminating light can be generated in different orientations. The optical assembly has an adjustable deflector in order to deflect an incident light bundle onto one of several beam paths in a selectable manner. Beam splitting devices are located in the beam paths in order to split the light bundle of the respective beam paths into partial light bundles, which are spatially separated from each other. Beam guides are provided for each of the partial light bundles, and guide the partial light bundles to a pupil plane. The beam guides are arranged in such a way that the partial light bundles that belong to the same beam path form a light spot pattern in the pupil plane; and that the light spot patterns of different beam paths in the pupil plane are different from each other.

Abstract: Technology is provided for a facial interface assembly for use with a head mounted display. The facial interface assembly includes a contoured spacer frame and an interchangeable face gasket removably attached to the contoured spacer frame. The contoured spacer frame includes a forehead interface portion, a pair of cheek interface portions, a bridge portion extending between the pair of cheek interface portions, and one or more attachment tabs configured to mate with a housing of the head mounted display. The face gasket includes a high-density foam layer, a low-density foam layer, and a fabric layer.

Abstract: Molded ophthalmic lenses with improved optical qualities can be manufactured at high volumes at low costs to provide single-use lenses. These ophthalmic lenses are contact lenses for examination or treatment of the interior of an eye, are formed of a moldable material, and have a ring portion integral with an optical and eye contacting portions. The ring portion extends from the main body and the ratio of the height of the ring portion to thickness of the lens is about 0.1 to 0.2. These features reduce production costs and improve the optical quality of the lens including allowing any debris, bubbles and the like that tend to adhere to the surface of the mold during the molding process to collect away from the optical centerline of the lens so as to improve the optical quality of the molded ophthalmic lens and minimizing shrinkage during the molding process.

Abstract: The present disclosure provides a smart contact lens and a light-transmitting body thereof. The smart contact lens includes a light-transmitting body, an image-sensing module and an image display module. The light-transmitting body has a first view window and a second view window. The image-sensing module diverges from the second view window by a predetermined horizontal distance. The image display module diverges from the first view window by a predetermined horizontal distance. The light-transmitting body has a first transmission path formed between the second view window and the image-sensing module, and a second transmission path formed between the first view window and the image display module. An external image source received by the second view window is transmitted to the image-sensing module through the first transmission path, and an internal image source generated by the image display module is transmitted to an eyeball through the second transmission path.

Abstract: A variable geometry contact lens structure having a thickness t sufficient to carry an active payload is constructed using layers of materials with high oxygen transmissibility and low oxygen transmissibility. The low transmissibility layer provide mechanical support for the active payload, and the high transmissibility layers provide adequate oxygen transmission to the cornea of the user's eye. The ratio of the thicknesses of the two layers changes abruptly at the boundaries between the payload and non-payload regions of the structure. For example, at a boundary of the payload region, a ratio of thicknesses of the high transmissibility layer t1 to thickness of the low transmissibility layer t2, R=t1/t2, changes by at least 2:1 over a lateral distance of not more than t.

Abstract: This application relates to the field of wearable devices and provides a dominant eye determining method and device. A method comprises: obtaining first sensory information of a first eye of a user; and determining whether the first eye is a dominant eye according to the first sensory information and reference information. The method and device help other devices worn by a user to perform automatic set-up according to a determining result, thereby improving user experience.

Abstract: Tinted lenses for attenuating ambient light, reducing glare, and improving color discrimination for a user are disclosed. In some embodiments, the lens has uniform transmittance across the visible spectrum with selective filtering of light at 480 nm and 580 nm. In some embodiments, the lens may reduce light in the blue region of the spectrum while maintaining color discrimination. In some embodiments, the level of attenuation provided by the lens may vary based on the intensity of light present while maintaining selective filtering at 480 nm and 580 nm.

Abstract: An optical magnifying combination lens, a head-mounted optical display system and a virtual reality display device are provided, wherein the optical magnifying combination lens is for utilization in a head-mounted virtual reality display device, comprising: a central area (A) and a peripheral area (B), wherein the central area (A) is a convex lens or a combination convex lens, and the peripheral area (B) is a focusing thin optical element; the central area (A) corresponds to main visual field imaging, and the peripheral area (B) corresponds to peripheral visual field imaging. The optical magnifying combination lens guarantees center image quality and enlarges edge view of human eyes, so as to enhance user immersion feelings.

Abstract: An optical photographing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element has refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element with refractive power has an image-side surface being convex in a paraxial region thereof, wherein an object-side surface and the image-side surface of the fifth lens element are both aspheric. The sixth lens element with refractive power has an object-side surface and an image-side surface being both aspheric. The optical photographing lens assembly has a total of six lens elements with refractive power.

Abstract: A micro-machined optical shutter includes an entry layer with a through-passage having an input side adapted to receive incoming light and an output side, and an exit layer with a through-passage having an input side comprising a pinhole and an output side. The entry and exit layers are vertically aligned, thereby providing an optical path such that light exiting the entry layer enters the exit layer via the pinhole unless the optical path is interrupted. An actuation plane positioned between the entry and exit layers comprises a shutter blade and an actuator arranged to move the shutter blade laterally with respect to the pinhole when actuated. The shutter blade preferably has a reflective angled surface such that, when the blade covers the pinhole, the angled surface redirects light on the optical path away from the pinhole, preferably into a micromachined beam dump.

Abstract: A metasurface is capable of modulating input light including a wavelength in a range of 880 nm to 40 ?m. The metasurface includes: a GaAs substrate including a light input surface into which input light is input and a light output surface facing the light input surface; an interlayer having a lower refractive index than GaAs and disposed on the light output surface side of the GaAs substrate; and a plurality of V-shaped antenna elements disposed on a side of the interlayer which is opposite to the GaAs substrate side and including a first arm and a second arm continuous with one end of the first arm.

Abstract: The present invention relates generally to stereoscopic displays, and more particularly, but not exclusively, to stereoscopic displays with addressable focus cues.