Abstract: An optical element includes a first resin portion, a second resin portion provided in contact with the first resin portion, an adhesion portion, a first base material, and a second base material, the first resin portion, the second resin portion, and the adhesion portion being provided between the first base material and the second base material. The adhesion portion is in contact with the second resin portion and one of the first base material and the second base material. When an elastic modulus of the first resin portion is denoted by E1, an elastic modulus of the second resin portion is denoted by E2, and an elastic modulus of the adhesion portion is denoted by E3, the optical element satisfies a relationship of E3<E2<0.9×E1.

Abstract: An optical system includes a first optical element having at least a first optical surface and a second optical surface, the first optical surface is not parallel to the second optical surface. The optical system includes a plurality of optical elements positioned adjacent to the second optical surface of the first optical element. The respective optical element of the plurality of optical elements is configured to receive light transmitted through the first optical surface at a first angle with respect to the second optical surface and direct the light back toward the first optical surface at a second angle, that is distinct from the first angle, with respect to the second optical surface.

Abstract: An ophthalmic device having a single or dual compartment configuration selectively emits infrared and visible light beams onto one or a pair of target eyes. The device performs eye fundus imaging and aids in the detection of ailments as indicated by anomalies in the pupillary reflex.

Abstract: An image projection device includes an image generation unit configured to generate a projection image; a magnifying optical system configured to magnify the projection image generated by the image generation unit and project the magnified projection image onto a projection plane; and an enclosure having an inner wall surface and being configured to accommodate the image generation unit and the magnifying optical system. The inner wall surface of the enclosure is disposed avoiding an area where converging magnification of converged incident light exceeds 15 times, the converged incident light resulting from incident light incident from outside of the enclosure onto the magnifying optical system being propagated in a direction opposite to the projection image.

Abstract: There is provided an imaging lens with high-resolution which realizes the low-profileness, wide field of view and low F-value well balance. An imaging lens comprising in order from an object side to an image side, a first lens having positive refractive power, a second lens having negative refractive power, a third lens being a double-sided aspheric lens, a fourth lens having a meniscus shape with a concave surface facing the object side near an optical axis, a fifth lens being a double-sided aspheric lens, and a sixth lens having the concave surface facing the image side near the optical axis, wherein the image-side surface of said sixth lens is an aspheric surface which changes to the convex surface at a peripheral portion, and a total track length is 6.0 mm or less and below conditional expressions (2) and (3) are satisfied: 20<?d3<32??(2) 20<?d5<32??(3) where ?d3: abbe number at d-ray of the third lens ?d5: abbe number at d-ray of the fifth lens.

Abstract: An optical system includes a splitting optic configured to receive a light beam from a light source and form a set of light bands radiating from the optical system at predetermined angles relative to illuminate a scene. The optical system further includes a lens configured to project a field of view of the scene into a two-dimensional format. The optical system further includes an optical sensor arranged offset from the central axis of the lens to capture a segment of the field of view projected by the lens.

Abstract: An ophthalmologic apparatus includes a data acquisition unit, a movement mechanism, an image acquisition unit, an analyzer, and a controller. The data acquisition unit includes an optical system for optically acquiring data of a fundus of a subject's eye. The movement mechanism is configured to change relative position between the subject's eye and the data acquisition unit. The image acquisition unit is configured to acquire an image of the fundus. The analyzer is configured to specify a relative movement direction and relative movement amount of the data acquisition unit with respect to the subject's eye based on a flare region formed all around a fundus region in the image. The controller is configured to control the movement mechanism based on the relative movement direction and the relative movement amount to change relative position between the subject's eye and the data acquisition unit in an optical axis direction of the optical system.

Abstract: Systems and methods in accordance with embodiments of the invention implement optical systems incorporating lens elements formed separately and subsequently bonded to low coefficient of thermal expansion substrates. Optical systems in accordance with various embodiments of the invention can be utilized in single aperture cameras, and multiple-aperture array cameras. In one embodiment, a robust optical system includes at least one carrier characterized by a low coefficient of thermal expansion to which at least a primary lens element formed from precision molded glass is bonded.

Abstract: An ophthalmic device having a single or dual compartment configuration selectively emits infrared and visible light beams onto one or a pair of target eyes. The device performs eye fundus imaging and aids in the detection of ailments as indicated by anomalies in the pupillary reflex.

Abstract: An optical apparatus includes a substrate that is configured to redirect a predetermined percentage of an input light beam at a plurality of angles to form a set of output beams at each of the angles such that light beams redirected at each of the angles cooperate to form bands of light at a range of predetermined distances from the optical apparatus.

Abstract: A zoom lens consists of, in order from an object side, a focusing group, a zoom group, and a subsequent group. The focusing group consists of, in order from the object side, a front focusing group which does not move with respect to the image plane during zooming and focusing, a middle focusing group which consists of one or two positive lens groups each moving during focusing, and a rear focusing group which consists of a negative lens group moving during zooming and focusing. The rear focusing group has a zoom range in which the amount of movement during focusing changes in accordance with the zoom position and the rear focusing group moves to the image side during focusing from the object at infinity to the closest object. Predetermined conditional expressions relating to the amount of movement of the rear focusing group are satisfied.

Abstract: A system for monitoring ocular movement can comprise a housing, a plurality of light sources, at least one imager, and a controller. The housing can define a cavity configured to allow each eye of a patient to view an interior region of the housing. The plurality of light sources can be oriented within the interior region of the housing. The at least one imager can be oriented to capture an image of an eye of a patient during an evaluation. The at least one controller can comprise at least one processor and a non-transitory computer readable medium storing instructions. The instructions can be executed by the processor and cause the controller to receive image data from the at least one imager and illuminate the plurality of light sources in a predetermined and reconfigurable sequence.

Abstract: A driving mechanism for driving an optical element is provided, including a fixed module, a movable module, and a drive assembly disposed on the fixed module and the movable module. The drive assembly includes a magnet and a coil for moving the movable module relative to the fixed module along a first axis. Specifically, the central axis of the magnet extends through a part of the coil and is offset from the center of the coil, wherein the central axis is perpendicular to the first axis.

Abstract: A lens barrel includes: a first lens; a first tube that holds the first lens and moves along an optical axis; a focusing lens; an actuator that drives the focusing lens; and a second tube that holds the focusing lens and the actuator and moves along the optical axis.

Abstract: Embodiments of the technology relate to a contact lens having a core that is covalently coated by a hydrogel layer, and to methods of making such a lens. In one aspect, embodiments provide for a coated contact lens comprising a lens core comprising an outer surface; and a hydrogel layer covalently attached to at least a portion of the outer surface, the hydrogel layer adapted to contact an ophthalmic surface, wherein the hydrogel layer comprises a hydrophilic polymer population having a first PEG species and a second PEG species, the first PEG species being at least partially cross-linked to the second PEG species.

Abstract: The zoom lens consists of, in order from an object side, a positive first lens group, a negative second lens group, a positive third lens group, a stop, and a negative fourth lens group. During zooming, the second and third lens groups move. The fourth lens group consists of, in order from the object side, a fourth A lens group, a negative fourth B lens group moving during image blur correction, a positive fourth C lens group, and a negative fourth D lens group moving during focusing, and a positive fourth E lens group. The zoom lens satisfies predetermined conditional expressions.

Abstract: A camera module includes a lens barrel, a driving coil disposed to face a target detection unit disposed on one side of the lens barrel, a driving device to provide a driving signal to the driving coil, and a position calculating unit including a capacitor, constituting an oscillation circuit together with the driving coil, to calculate a position of the lens barrel from an oscillation signal output by the oscillation circuit. The position calculating unit generates an alternating current (AC) signal according to a comparison result of a peak of the oscillation signal and a reference peak and calculates a position of the lens barrel according to a frequency of the AC signal.

Abstract: An ophthalmologic apparatus of embodiments includes an OCT unit, an acquisition unit, and a specifying unit. The OCT unit is configured to acquire a tomographic image of a subject's eye using optical coherence tomography. The acquisition unit is configured to acquire a front image of the subject's eye. The specifying unit is configured to specify shape of a tissue of the subject's eye based on the tomographic image acquired by the OCT unit and the front image acquired by the acquisition unit.

Abstract: A zoom lens includes, in order from an object side, a positive first unit, a negative second unit, a positive intermediate group consisting of one or two units and including a third unit located on a most object side, a negative unit, and a rear group consisting of one or two units including a positive unit located on a most object side. Conditional expressions are satisfied with respect to amounts of movement of the second and third units from a wide angle end to a telephoto end, a distance at the wide angle end from a most object side surface vertex in the first unit to a most object side surface vertex in the third unit, an Abbe number of a most object side lens in the first unit, a focal length of the second unit, and focal lengths at the wide angle end and at the telephoto end.

Abstract: Some embodiments provide a lens including a lens body and an optical filter configured to attenuate visible light in certain spectral bands. At least some of the spectral bands can include spectral features that tend to substantially increase the colorfulness, clarity, and/or vividness of a scene. In certain embodiments, eyewear incorporates an optical filter that enhances chroma within one or more spectral hands. In some embodiments, a wearer of the eyewear can perceive the increase in chroma when viewing at least certain types of scenes.