Abstract: A lens is provided that has an improved optical configuration in order to provide enhanced off-axis optical performance by tending to reduce, eliminate, or minimize first order optical distortion. Embodiments may be used in non-corrective or corrective unitary or dual lens eyewear, for example in combination with a frame to support the lens in a path of a straight ahead line of sight forming a center axis of an eye of a typical wearer. The lens may comprise a lens body. The lens body may comprise a surface having a spheric, toric, cylindrical or freeform geometry and another surface having a freeform geometry. A lens thickness is defined between the surfaces. A prismatic power of the lens is improved, particularly for off-axis viewing angles.

Abstract: A process, phoropter, and an optometry system, the process being for correction of the shift of the optical power of an active lens in a phoropter due to a temperature change over time, the active lens including a container filled with a liquid and having a deformable curvature membrane under the action of an actuator controlled by an optical power control command, the shift being that the active lens provides an actual optical power that is different from the expected optical power corresponding to the optical power control command. A temperature sensor is arranged in and/or on the phoropter to measure the temperature in the phoropter.

Abstract: An Off Axis Guider specifically designed with internal mechanically controlled placement of one or more prisms which allow the user to select stars in the telescope's field of view without obscuring the primary cameras' image capturing ability.

Abstract: A method for examining a driver of a vehicle. In accordance with the method, at least one part of at least one eye and/or at least one part of the face of the driver is captured using a monitoring unit. The data captured by the monitoring unit is evaluated and the visual perception capability of the driver is examined based on the captured data. The method may further include identifying the driver and operating devices of the vehicle using the captured data.

Abstract: An eyeglass frame having a foldable bridge includes: a pair of rims facing each other from both sides such that lenses are coupled/configured, respectively; and a bridge configured to be individually separated from the pair of rims, the pair of rims being rotatably connected to inner portions of the bridge, which face each other, such that the pair of rims are unfolded forwards from both sides and then folded rearwards. The bridge includes: a connection plate configured such that inner front surfaces of the pair of rims contact both sides thereof, respectively; and a rotating support coupled to the front of the connection plate such that inner portions of the pair of rims are rotatably coupled to both sides of the connection plate, respectively, front surfaces of the pair of rims being folded.

Abstract: An optical modulator is disposed in front of an eye along a direction in which light enters the eye to modulate the properties of light depending on the degree of opacity of the eye.

Abstract: An ophthalmologic apparatus is provided, which is capable of more securely supporting left and right cheekbone portions of a subject in accordance with the size and shape of the subject's face allowing the subject to respond orally where the positions of the subject's eyes are fixed. The ophthalmologic apparatus includes a forehead contact portion coming into contact with the forehead of the subject, and a cheek contact portion coming into contact with the cheeks of the subject. The cheek contact portion includes a first cheek-contact body that supports one of the cheeks of the subject, a second cheek-contact body that supports the other one of the cheeks of the subject, and an opening/closing mechanism portion that opens and closes in a horizontal direction the first cheek-contact body and the second cheek-contact body in a direction of coming close to each other and a direction of separating from each other.

Abstract: An optical imaging system includes a first lens having an object-side surface that is convex; a second lens having a refractive power and a refractive index of 1.65 or more; a third lens having a refractive power; a fourth lens having a refractive power and an object-side surface that is convex; a fifth lens having a refractive power; a sixth lens having a positive refractive power; and a seventh lens having an object-side surface that is convex, wherein the first lens through the seventh lens are sequentially disposed in numerical order from an object side of the optical imaging system toward an imaging plane of the optical imaging system, and two or more of the first lens and the third lens through the seventh lens have a refractive index of 1.6 or more.

Abstract: A device for optically imaging at least a part of an object, the device having an optical axis and including a two-dimensional first array of first microlenses, having a first side intended to face the object, and a second side, opposite the first side, a two-dimensional second array of second microlenses, each first microlens being aligned with a second microlens on an axis parallel to the optical axis, wherein each first microlens comprises a first catoptric system, and preferably a first catadioptric system.

Abstract: An apparatus includes a display device having a lenticular layer. The lenticular layer includes (i) a first side, (ii) a second side opposite the first side, and (iii) particles in a fluid medium between the first and second sides of the lenticular layer. The second side of the lenticular layer includes lens elements forming a lenticular array. The particles of the lenticular layer are configured to move within the fluid medium such that (i) the lens elements are filled with the particles in a first mode or (ii) the lens elements are filled with the fluid medium in a second mode. The display device is configured to operate as a directional display in one of the first and second modes and as a single display in another of the first and second modes.

Abstract: Provided is a pair of glasses with a ventilated structure, mainly including an upper frame, a lens unit and a lower frame. The upper frame is provided with a lens groove and an inserting seat. The lens unit is arrange in the lens groove, and is provided with a plurality of air-permeable holes at the upper end of the lens unit. The lower frame is provided with an inserting section to be inserted into the inserting groove. The inserting section is provided with a positioning convex part operatively embedded in one of the adjusting holes of the adjusting unit to for a positioning. By positioning the position of the positioning convex part relative to each adjusting hole, the air-permeable holes of the lens are hidden or exposed on the upper frame.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens sequentially disposed on an optical axis from an object side toward an image side. A distance from an object-side surface of the first lens to an imaging plane of an image sensor is TTL, an overall focal length of an optical system including the first to sixth lenses is F, and TTL/F?0.83. An optical axis distance between the second lens and the third lens is D23, an optical axis distance between the third lens and the fourth lens is D34, and 2.2<D23/D34<5.4.

Abstract: An optical element includes a first layer, a second layer, and a fluid. A first surface of the first layer is configured to change hydrophobicity in response to incoming activation light. Absorbing molecules in the fluid are repelled or attracted to the first surface in response to the hydrophobicity of the first surface.

Abstract: An optical element drive mechanism is provided. The optical element drive mechanism includes an immovable part, a movable part, and a drive assembly. The movable part is movable relative to the immovable part. The movable part holds an optical element with an optical axis. The drive assembly drives the movable part to move relative to the immovable part. At least part of the drive assembly is disposed on the immovable part.

Abstract: A scanning system includes a microelectromechanical system (MEMS) scanning structure configured with a desired rotational mode of movement based on a driving signal; a plurality of comb-drives configured to drive the MEMS scanning structure according to the desired rotational mode of movement based on the driving signal, each comb-drive including a rotor comb electrode and a stator comb electrode that form a capacitive element that has a capacitance that depends on the deflection angle of the MEMS scanning structure; a driver configured to generate the at least one driving signal; a sensing circuit selectively coupled to at least a subset of the plurality of comb-drives for receiving sensing signals therefrom, wherein each sensing signal is representative of the capacitance of a corresponding comb-drive; and a processing circuit configured to determine a scanning direction of the MEMS scanning structure in the desired rotational mode of movement based on the sensing signals.

Abstract: Introduced here are retinal cameras having optical stops whose size can be adjusted to enable self-alignment by naturally guiding an eye toward a specified location. Generally, a retinal camera will constrict the bounds of an optical stop until the optical stop is aligned with the eye. In some embodiments, the optical stop is mechanically resized as a subject shifts their eye. In some embodiments, the optical stop is digitally created using a pixelated liquid crystal display (LCD) layer having multiple pixels that are individually controllably. In some embodiments, multiple non-pixelated LCD layers are connected to one another to form a variable transmission stack. In such embodiments, the size of the optical stop can be varied by changing which LCD layer(s) are active at a given point in time.

Abstract: The present invention relates to a test system for assessing color vision variability of test persons (7). The test system comprises at least two test carriers (1), wherein each of the at least two test carriers (1) is provided with a two-dimensional pattern (4) including a background (2) and a plurality of samples (3). The plurality of samples (3) and the background (2) of each one of the at least two test carriers (1) are made of at least two different dyestuff combinations representing metameric colors. The samples (3) and/or the background (2) show color scaling in at least two directions such that each one of the at least two test carriers (1) is configured to provide that a test person (7) can select a spot (PISC) from the two-dimensional pattern (4) where the metameric colors of the samples (3) and the background (2) match best.

Abstract: A method for demonstrating an optical disorder includes providing two ophthalmic lenses in a first position relative to each other. Each lens includes a first vision zone and a second vision zone. The first vision zone includes a distance vision zone having a distance vision reference point and a power of between about ?1.00 Diopters and ?4.00 Diopters. The second vision zone includes a near vision zone having a near vision reference point and a power of between about +1.00 Diopters and about +4.00 Diopters. Each lens includes an Add power of between +2.00 Diopters and +3.25 Diopters; the ophthalmic lenses are repositioned to a second position relative to each other, so the distance vision zone of each lens is viewable by a wearer through the near vision zone and the near vision zone of each lens is viewable by a wearer through the distance vision zone.

Abstract: An eyeglass system includes interchangeable anterior aesthetics. The system includes a base frame, including a front face with a left lens orbital carrying a left lens and a right lens orbital carrying a right lens, and left and right earstems attached to the front frame. A decorative top frame includes a left annular mask with an unobstructed left opening and a right annular mask with an unobstructed right opening, configured to cover the left and right orbitals, respectively, while exposing the left and right lenses through the left and right openings. The top frame is releasably connectable to the base frame. The system may include a plurality of visually distinct top frames, each interchangeably removably connectable to a common base frame.

Abstract: An object of the present invention is to provide a thin and lightweight polarizing lens for use in lightweight sunglasses (in particular, rimless sunglasses) while maintaining the clamping force and mechanical strength of a temple part, and a manufacturing method therefor. The values of: the center thickness v of a polarizing lens A including an injection-molded layer 3 laminated on at least one surface of a polarizing sheet B, the injection-molded layer having a polyamide-based resin; and the flexural modulus of the injection-molded layer 3 are adjusted, thus the predetermined clamping force and mechanical strength of a temple part are obtained even in the case of sunglasses with the thin and lightweight polarizing lens.