Abstract: A wide-angle lens system that includes four lens groups arranged from object to image and having a field of view greater than 90 degrees is described. The lens elements within each of the four groups are selected for optimization of performance factors of low chromatic aberration, low optical distortion and manufacturability. Design methods are included and shown through exemplary optimized designs.

Abstract: In an image generation unit, a light emitting part is formed using a self-emitting OLED device, and thereby, high-contrast images can be formed and the life of the light emitting part and the life of the virtual image display apparatus are extended. Even when the light emitted in the light emitting part has deviation in color balance, a half-mirror layer that has light transmissivity and realizes see-through vision is a reflection film having wavelength dependence, and thereby, a uniform color balance of image lights is achieved and images in good conditions are visually recognized.

Abstract: The invention discloses a six-piece optical lens for capturing image and a six-piece optical module for capturing image. In order from an object-side surface to an image-side surface, the optical lens along the optical axis comprises a first lens with refractive power; a second lens with refractive power; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power; a sixth lens with refractive power, and at least one of the image-side surface and object-side surface of each of the six lens elements is aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.

Abstract: Embodiments of an electronic device comprising an enclosure and electrical components disposed at least partially inside the enclosure, wherein the enclosure comprises a substrate having a tactile surface are disclosed. The tactile surface may include a textured surface, a coated surface or a coated textured surface that exhibits a low fingerprint visibility, when a fingerprint is applied to the tactile surface. In one or more embodiments, the substrate exhibits an average transmittance of about 80% or greater over the visible spectrum, a coefficient of friction less than about 0.3, a surface roughness Ra of about 500 nm or greater, and either one or both a transmission haze greater than about 60%, and a reflection haze at either 2 degrees from specular or 5 degrees from specular greater than 60%.

Abstract: An electronic paper and a manufacturing method thereof are provided. The electronic paper includes a first substrate provided with a microstructure and multiple first electrodes thereon; a second substrate arranged opposite to the first substrate and provided with multiple second electrodes thereon, the microstructure is arranged on a side of the first substrate facing the second substrate; and pixel isolation walls arranged between the first and second substrates, for dividing the electronic paper into pixel units; each pixel unit includes: one first substrate; one second substrate; charged particles arranged between the first and second electrodes, the first and second electrodes control, depending on a voltage applied thereto, contact between the charged particles and the microstructure; when the charged particles are not in contact with the microstructure, light from outside is subject to total internal reflection after being radiated to the microstructure through the first substrate.

Abstract: The effective focal length of an optical system can be electronically controlled using switchable wave plates in conjunction with polarized light.

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 zoom device for setting an imaging scale of an imaging device, which is configured for imaging an object on an image plane of an image recording device using a microscope objective, comprising an optical element arrangement is disclosed. The optical element arrangement includes an object-side zoom entrance for optical connection to an objective exit, in particular a collimated objective exit, of the microscope objective and includes an image-side zoom exit for optical connection to an image recording entrance of the image recording device.

Abstract: Method for defining one face of an ophthalmic lens, having a surface formed by superposing a Fresnel layer and a continuous surface referred to as the “carrier”. Also disclosed is an ophthalmic lens comprising such a face. The method allows a Fresnel layer to be defined that compensates for geometric effects induced by a variation in the curvature of the carrier on the light incident on the face of an ophthalmic lens. This method is particularly useful when the curvature of the face of the ophthalmic lens is adapted to facilitate fitting it into a spectacle frame.

Abstract: An optical scanner includes: a movable part including a light reflection portion that reflects light; a first shaft part that swingably supports the movable part about a first axis; a support part that supports the first shaft part; a recessed portion provided in the support part, and having an opening portion in one surface of the support part and having a side surface opening portion in a side surface of the support part connected to the one surface of the support part; and a regulating member provided in the recessed portion and partially projecting from the side surface opening portion with the projecting portion located between the support part and the movable part.

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: There is provided an electric lens including a first lens and a second lens adjacent to each other, and a variable-refractive-index body that is held between a lens face of the first lens and a lens face of the second lens mutually having the same curved surface, and changes refractive index according to an externally applied electrical signal. A thickness of the variable-refractive-index body is uniform in at least a portion that transmits a light ray contributing to image formation.

Abstract: A lens apparatus includes a can ring for moving an optical member in an optical axis direction by rotating about an optical axis relative to a fixed barrel. One end surface of the cam ring in the optical axis direction is in contact with a first ball array, while an opposite end surface of the cam ring in the optical axis direction is in contact with a second ball array, the first ball array is rotatably held by and between a ring member movable in the optical axis direction and the one end surface, the second ball array is rotatably held by and between a cap member fixed to the fixed barrel and the opposite end surface, and the ring member is biased by an elastic member toward the cam ring, and the cam ring is thereby biased toward the cap member.

Abstract: The system and method of steering a beam using in-line fluid filled prisms having a first transparent plate, a second transparent plate, and a fluid layer interposed between the first and second plate. One or more actuators are used to manipulate the first and second plates relative to each other to create a prism to steer a beam. A second fluid filled prism may be used in-line, where one prism is used for fine adjustment and the other prism is used for coarse adjustment.

Abstract: A method of enhancing transmittance of waves according to the invention comprises the following steps: (a) generating a plurality of waves each of which has random phase; (b) grouping randomly the plurality of waves into a first group and a second group; (c) introducing the waves onto a disordered medium by fixing phase of waves constituting the first group and varying phase of waves constituting the second group; (d) measuring intensity of the waves based on overlapped waves of the first group and the second group which penetrated the disordered medium according to the phase variation of waves constituting the second group; (e) obtaining phase having the maximum intensity according to the phase variation among intensities measured at the step (d); and (f) adjusting phase of the waves constituting the second group based on phase obtained at the step (e).

Abstract: A window member for a display device includes a base substrate having a light transmission area and a light blocking area adjacent to the light transmission area. A light blocking layer is disposed on one surface of the base substrate in the light blocking area. The light blocking layer includes a light blocking base capable of blocking light; and a heat radiating pigment dispersed on the light blocking base.

Abstract: A microscope system includes: a stage on which a specimen is placed; a light emitting LED configured to emit illumination light for illuminating the specimen; an optical system configured to condense the illumination light emitted by the light emitting LED and irradiate the specimen with the illumination light; an input unit configured to receive an input of a light control signal that adjusts a light amount of the light emitting LED; and a control unit configured to control, when the light control signal is input from the input unit, the light amount of the light emitting LED to become a light amount according to the light control signal by delaying the light control signal by a predetermined time from timing when the light control signal is input.

Abstract: According to one embodiment, a fundus imaging apparatus includes a light source, an optical scanner, an optical fiber, a light guide system, a photodetector unit, and an image forming unit. The optical scanner scans the fundus of a subject's eye with light from the light source. The optical fiber includes a plurality of optical waveguides. The light guide system guides the light returning from the fundus to the entrance end of the optical fiber. The photodetector unit detects light output from each of at least three regions at the exit end of the optical fiber. The image forming unit forms a first image based on a detection result of light output from a first region of the at least three regions, and a second image based on detection results of light output from two or more regions of the at least three regions other than the first region.

Abstract: A glass article having a low level of grainy appearance that can appear to have a shift in the pattern of the grains with changing viewing angle of a display, or “sparkle.” The glass article—which, in some embodiments, is a transparent glass sheet—has small-angle-scattering properties and/or distinctness-of-reflected-image (DOI), leading to improved viewability in display applications, especially under high ambient lighting conditions. In some embodiments, the antiglare surface of the glass sheet is an etched surface, with no foreign coating present on the antiglare surface.

Abstract: An optical reflective device referred to as a skew mirror, having a reflective axis that need not be constrained to surface normal, is described. Examples of skew mirrors are configured to reflect light about substantially constant reflective axes across a relatively wide range of wavelengths. In some examples, a skew mirror has substantially constant reflective axes across a relatively wide range of angles of incidence. Exemplary methods for making and using skew mirrors are also disclosed. Skew mirrors include a grating structure, which in some examples comprises a hologram.