Abstract: A focus mechanism includes an inner barrel and an outer barrel that holds the inner barrel to allow the inner barrel to move along an optical axis. An inner peripheral surface of the outer barrel includes a medium-diameter portion having an inner diameter and a small-diameter portion having an inner diameter. The small-diameter portion is continuous to the medium-diameter portion, is positioned on a back side of the medium-diameter portion in an insertion direction ID where the inner barrel is inserted into the outer barrel. The small-diameter portion has an inner diameter that allows an X-ring absorbing the rattling of the inner barrel to be in pressure contact with the small-diameter portion in a case where the inner barrel is inserted into the outer barrel in a state where the X-ring is fitted to a groove.

Abstract: The present invention relates to methods for calibrating and controlling a polarization modulator, for example a photoelastic modulator (PEM) device on a CD measurement instrument, the method comprising scanning the control input voltage (Vin) at a fixed wavelength (?meas); and recording the CD scan, wherein the control input voltage (Vin) determines the peak retardation (?) at the fixed wavelength (?meas), and wherein the method is repeated for one or more fixed wavelengths. An augmented drive function allows the PEM to be operated with greater accuracy over the full wavelength range, and measurement of resonant frequency provides a means to continually correct for temperature related drift of retardation.

Abstract: A multiple-lens camera system is provided, including a first lens driving module, a second lens driving module, and a shielding member. The first and second lens driving modules respectively include a frame, a lens holder movably disposed in the frame for holding a lens, a magnetic element disposed on a side of the lens holder and a driving board, wherein the driving board has a first coil corresponding to the magnetic element, to generate a magnetic force for moving the lens holder and the lens relative to the driving board. The shielding member is disposed in the first lens driving module and between the two magnetic elements of the first and second lens driving modules which are adjacent to each other, to suppress magnetic interference between the first and second lens driving modules.

Abstract: The present disclosure provides an electrophoretic display medium. The display medium can include a substrate, an electrophoretic layer, and a network electrode. The electrophoretic layer is disposed adjacent the top surface of the substrate. The electrophoretic layer includes a plurality of microcapsules containing an internal phase in a binder. A bottom portion of the plurality of microcapsules is embedded within the binder and a top portion of the microcapsules is emergent from the binder, thereby creating a network of valleys. The network electrode occupies at least a portion of the network of valleys.

Abstract: A vibration wave motor including: a vibrator; a friction member; and a pressurizing member configured to press the vibrator and the friction member into contact with each other. The vibrator and the friction member are relatively moved in a direction orthogonal to the pressurizing direction of the pressurizing member by vibrations generated on the vibrator, the vibrator and the friction member are configured so as to move in parallel with the pressurizing direction with respect to a fixed member, and the vibration wave motor further includes at least one first restricting portion that restricts a movable amount of the friction member in the pressurizing direction and at least one second restricting portion that restricts a movable amount of the vibrator in the pressurizing direction, such that the movable amount of the friction member is smaller than the movable amount of the vibrator in the pressurizing direction.

Abstract: A method for manufacturing an optical device, includes obtaining a plurality of test images in each of which spectral intensities of a first color component, a second color component and a third color component are separately changeable, changing the spectral intensity of the first color component in at least a first test image, changing the spectral intensity of the second color component in at least a second test image, obtaining a spectral intensity Rs of the first color component and a spectral intensity Gs of the second color component satisfying a particular test condition when a subject is looking at the first and second test images, and manufacturing the optical device including an optical element configured to adjust spectral intensities of the first color component and the second color component, in light transmitted through the optical element, based on the spectral intensities Rs and Gs.

Abstract: A photographing optical lens assembly includes eight lens elements, the eight lens elements being, 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, a seventh lens element and an eighth lens element. Each of the eight lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side. At least one surface of the object-side surface and the image-side surface of at least one lens element of the photographing optical lens assembly is aspheric and includes at least one inflection point.

Abstract: An imaging lens in which a positive first lens group, a positive second lens group, and a negative third lens group are arranged in order from the object side. The first lens group includes a positive first lens having a convex object-side surface and a second lens. The second lens group includes third and fourth lenses each having at least one aspheric surface. The third lens group includes a fifth lens, a sixth lens as a double-sided aspheric lens, and a seventh lens having a concave image-side surface near an optical axis. The lenses are not joined to each other, the seventh lens has an aspheric image-side surface whose shape changes from concave to convex as the distance from the optical axis increases, and an F-number is less than 1.8.

Abstract: The present application discloses an optical film of a double-sided structure. The optical film of a double-sided structure comprises: a body which includes a polymer, having a first surface and a second surface opposite to each other; and an accommodation mechanism, provided on the first surface and the second surface, and used for forming a graphic structure on a surface of the body. The body comprising the accommodation mechanism is an integral structure. The accommodation mechanism comprises a groove, and the accommodation mechanism accommodates a filler to form the graphic structure. The filler comprises one or more of an electrically conductive material, a coloring material, or a dyeing material. The polymer comprises thermosetting resin and/or photocurable resin. The body has a transmittance of above 0.7. The optical film provided by the present application has a thickness which is beneficial to reduce an optical film.

Abstract: A camera module is provided. The camera includes a circuit board to which an image sensor disposed is disposed, one or more first conductive portions at one or more regions of the circuit board, one or more elastic connectors, including an elastic member and a metal film surrounding at least part of an outer portion of the elastic member, the elastic connector is disposed on the first conductive region, a lens device including one or more lenses and a driver capable of moving the lens device, a housing which accommodates the lens device, and a second conductive portion in one or more regions of the housing. The housing may be disposed above the elastic connector such that the second conductive portion is electrically coupled to the first conductive portion due to a contact with the elastic connector.

Abstract: A photoluminescence display panel for three-axis focal point length conversion includes: a lens layer having a two-dimensional Fresnel pattern formed thereon to adjust a path of light entering from a light source; a light conversion layer stacked on the lens layer to convert a color of light that has pass through the lens layer; and a power supply unit for directly applying a voltage to the lens layer, in which as the lens layer is partitioned into a plurality of areas and the power supply unit adjusts the voltage applied to each area of the lens layer partitioned into a plurality of areas, a focal point position can be changed in a three-dimensional space, and thus the aperture and resolution of the display panel can be enhanced.

Abstract: A display panel includes: a substrate; a plurality of first grooves formed in a surface of the substrate; a second metal layer, a dielectric layer and a first metal electrode layer disposed in sequence within each of the plurality of first grooves; electronic ink filled within each of the plurality of first grooves; a first encapsulation substrate disposed on the surface of the substrate provided with the plurality of first grooves; and a plurality of point electrodes disposed on the first encapsulation substrate. The first metal electrode layer is semi-transmissive, the dielectric layer is light-transmissive, and the second metal layer is non-transmissive. The electronic ink includes black charged particles. The plurality of first grooves are in one-to-one correspondence with the plurality of point electrodes.

Abstract: An optical device is described. At least a portion of the optical device includes lithium niobate and is fabricated utilizing ultraviolet lithography. In some aspects the at least the portion of the optical device is fabricated using deep ultraviolet lithography. In some aspects, the short range root mean square surface roughness of a sidewall of the at least the portion of the optical device is less than ten nanometers. In some aspects, the at least the portion of the optical device has a loss of not more than 2 dB/cm.

Abstract: Electrochromic devices and methods may employ the addition of a defect-mitigating insulating layer which prevents electronically conducting layers and/or electrochromically active layers from contacting layers of the opposite polarity and creating a short circuit in regions where defects form. In some embodiments, an encapsulating layer is provided to encapsulate particles and prevent them from ejecting from the device stack and risking a short circuit when subsequent layers are deposited. The insulating layer may have an electronic resistivity of between about 1 and 108 Ohm-cm. In some embodiments, the insulating layer contains one or more of the following metal oxides: aluminum oxide, zinc oxide, tin oxide, silicon aluminum oxide, cerium oxide, tungsten oxide, nickel tungsten oxide, and oxidized indium tin oxide. Carbides, nitrides, oxynitrides, and oxycarbides may also be used.

Abstract: An image display device includes a lens array, and a scanner to two-dimensionally scan the lens array with a light beam for image display, in which each of lenses of the lens array includes a convex surface with different curvatures in two directions orthogonal to the optical axis of the lens and to each other.

Abstract: Thin-film devices, for example, multi-zone electrochromic windows, and methods of manufacturing are described. In certain cases, a multi-zone electrochromic window comprises a monolithic EC device on a transparent substrate and two or more tinting zones, wherein the tinting zones are configured for independent operation.

Abstract: An image display to provide a realistic 3D stereoscopic image of a desired scene. The display device is comprised of directional pixels. Each directional pixel has a plurality of facets having a constrained viewing angle. Each facet has a point source of light that emits light with a controllable luminescence and hue. In this regard, each facet of the directional pixel has a constrained viewing angle and independent luminance and hue.

Abstract: An imaging lens in which a positive first lens group, a positive second lens group, and a negative third lens group are arranged in order from the object side. The first lens group includes a positive first lens having a convex object-side surface and a second lens. The second lens group includes third and fourth lenses each having at least one aspheric surface. The third lens group includes a fifth lens, a sixth lens as a double-sided aspheric lens, and a seventh lens having a concave image-side surface near an optical axis. The lenses are not joined to each other, the seventh lens has an aspheric image-side surface whose shape changes from concave to convex as the distance from the optical axis increases, and an F-number is less than 1.8.

Abstract: An imaging lens in which a positive first lens group, a positive second lens group, and a negative third lens group are arranged in order from the object side. The first lens group includes a positive first lens having a convex object-side surface and a second lens. The second lens group includes third and fourth lenses each having at least one aspheric surface. The third lens group includes a fifth lens, a sixth lens as a double-sided aspheric lens, and a seventh lens having a concave image-side surface near an optical axis. The lenses are not joined to each other, the seventh lens has an aspheric image-side surface whose shape changes from concave to convex as the distance from the optical axis increases, and an F-number is less than 1.8.

Abstract: An apparatus includes a photoelastic modulator (PEM) optical element including a first driving axis and a second driving axis arranged at a selected angle with respect to each other and perpendicular to an optical axis, wherein the first driving axis and the second driving axis extend respective predetermined non-equal lengths that correspond to respective predetermined non-equal natural first and second PEM frequencies f1 and f2. Methods of manufacture and operation are also disclosed.