Abstract: The subject matter disclosed herein relates to reduction of effective voltage drops within pixels in active matrix displays such as electrowetting display devices. The electrowetting display device comprises a plurality of pixel areas, wherein each pixel area comprises a hydrophobic surface, a first fluid and a second fluid on the hydrophobic surface, wherein the first fluid is immiscible with the second fluid, and a pixel electrode under the hydrophobic surface, wherein the pixel electrode has a substantially U-shape. A thin film transistor is coupled to the pixel electrode and a voltage source. Voltage via the thin film transistor and the voltage source applied to the hydrophobic surface via the pixel electrode causes the hydrophobic surface to become more hydrophobilic to thereby move the second fluid onto the hydrophobic surface to thereby substantially displace the first fluid on the hydrophobic surface.

Abstract: A helmet mounted display (HMD) system comprising (i) a display device adapted to be positioned between an eye of a person wearing the helmet and a vision-related device; and (ii) a step-in visor which is positioned between the eye of the user and the display device. The vision-related device is removably attached to an accessory joint so that it can be interchanged between an outer visor for use during the day and night vision goggles for use during the night.

Abstract: The invention relates to a head-up display comprising a group of optical sub-systems (261, 262, 263) formed in a single plane and having dimensions that diminish moving away from the main optical axis of the display. The display also comprises sub-screens (241, 242, 243), the positions and dimensions of which are defined according to: the length of the optical path (D), the dimensions of the optical sub-systems, and a maximum authorized length of movement in a plane perpendicular to the optical axis and located at a distance equal to the length of the optical path, such that the information projected by the group of sub-screens can be seen along the entire authorized length of movement.

Abstract: An HMD apparatus with an imaging optical system for each one of the eyes of a user, which includes at least one display unit to be viewed by the respective eye, and with a device for the acquisition of the viewing direction of at least one eye within a field of view of the display unit by means of an eye camera, wherein the eye camera is provided with a camera holder, which can be adjusted in terms of a peripheral angle around a viewing central axis of the field of view and in terms of a setting angle with respect to the viewing central axis.

Abstract: Opto-mechanical systems, methods of assembly, and devices utilizing opto-mechanical systems are disclosed. One example opto-mechanical system includes an optics housing; an optics display; and a display module. The optics display can extend away from a first open end of the optics housing to display images to a user. A display module is positioned adjacent a second open end of the optics housing. The display module may be constructed and arranged to project images onto the optics display. The display module further comprises a display module housing, as well as module displays that are positioned within the display module housing. The optics housing may be constructed and arranged to join the display module to the optics housing. The display module can be positioned within the optics housing and is spaced a predetermined distance away from the first surface of the optics display.

Abstract: A CISM includes a lens array in which a plurality of lenses is arranged in a row form so that the optical axes are parallel to one another, and an incident optical image is formed from one end side in the optical axis direction of the lens array, thereby forming an image on the other end side. The CISM includes a light blocking member in which a plurality of through holes that allow light to pass through is provided in a row form in the arrangement direction. In the light blocking member, the inner wall surface of the through holes that intersects the arrangement direction includes reflection surfaces that intersect a sub-scanning direction. The reflection surfaces reflect light incident on the same reflection surface in a direction that intersects the arrangement direction.

Abstract: Disclosed is lens module. The lens module includes a barrel and a lens group disposed in the barrel. The lens group includes a first lens element connecting with the barrel and a second lens element connecting with the first lens element. The first lens element connecting with the barrel makes the lens module have a first matching precision. The first matching precision makes the barrel and the lens group be concentric. The first lens element has a first arc surface and the second lens element has a second arc surface engaging with the first arc surface which makes the lens module have a second matching precision. The second matching precision makes the first lens element and the second lens element be concentric.

Abstract: An imaging lens which uses a larger number of constituent lenses for higher performance and features compactness and a wide field of view. The imaging lens is composed of seven lenses to form an image of an object on a solid-state image sensor. The constituent lenses are arranged in the following order from an object side to an image side: a first lens with positive refractive power; a second lens with positive or negative refractive power; a third lens with negative refractive power; a fourth lens with positive or negative refractive power as a double-sided aspheric lens; a meniscus fifth lens having a convex surface on the image side; a sixth lens with positive or negative refractive power as a double-sided aspheric lens; and a seventh lens with negative refractive power, in which an air gap is provided between lenses.

Abstract: A reflection-type light control element according to the present invention is provided with a light control layer configured to exhibit a reversible change between a transparent state and a reflection state in a reversible reaction with a hydrogen and a catalyst layer configured to accelerate the reversible reaction of the light control layer, wherein the reflection-type light control element is such that the light control layer includes an alloy that contains at least one kind of element selected from a group composed of group 2 elements and at least two kinds of elements selected from a group composed of group 3 elements and rare earth elements, or a hydride of the alloy.

Abstract: Designed for a solid-state image sensor, it includes, in order from an object side to an image side: a first positive lens having a convex object-side surface; a second negative lens having a concave image-side surface; a third positive meniscus lens having a convex image-side surface; and a fourth negative lens having concave object-side and image-side surfaces near an optical axis. A first diffraction optical surface is formed on one lens surface of the first to third lenses, and a second one is formed on the fourth lens object-side surface. The imaging lens satisfies a conditional expression below, 0.0<r6/r7<0.1, where r6 denotes the curvature radius of the third lens image-side surface, and r7 denotes that of the fourth lens object-side surface.

Abstract: A lens barrel includes a fixed frame, a rotational frame, a first straight advance frame, a first lens retaining frame, and a first drive. The rotational frame engages with the fixed frame. The first straight advance frame engages with the rotational frame. The first lens retaining frame retains a first lens group and engage with the rotational frame. The first drive unit is attached to the first straight advance frame and drives rotationally the rotational frame around an optical axis. The first drive unit and the first straight advance frame move integrally with respect to the fixed frame in an optical axis direction according to a rotation of the rotational frame driven by the first drive unit. The first lens retaining frame further move with respect to the first straight advance frame in the optical axis direction, when the first straight advance frame moves such as above state.

Abstract: A binocular display includes a waveguide. A convex spherical mount has a fixed position relative to the waveguide. A light engine includes a concave spherical mount that adjustably mates with the convex spherical mount.

Abstract: Provided is a lens barrel whose diameter can be reduced. The lens barrel includes a rotary frame having a gear on an inner peripheral surface, and a retracting lens frame which holds a retracting lens configured to retract from an optical axis along with rotation of the rotary frame. A position where the retracting lens retracts is where the gear of the rotary frame is located when the retracting lens is positioned on the optical axis. The rotary frame includes a first cam groove on an outer peripheral surface, and a second cam groove on the inner peripheral surface. The lens barrel also includes a first lens frame having a first cam follower which is mounted on the first cam groove, and a second lens frame having a second cam follower which is mounted on the second cam groove. The retracting lens frame is held by the second lens frame.

Abstract: An imaging optical system includes a bending optical element which bends an object-emanating light bundle, a post-bending lens system on a post-bending optical axis defined by the bending optical element, and an image sensor. An effective optical surface of a large-diameter lens element, having a greatest axial light bundle effective radius, is formed into a non-circular shape by making a length of the effective optical surface from the post-bending optical axis toward a side opposite from the object side smaller than the axial light bundle effective radius, with reference to the axial light bundle effective radius lying on a plane which extends orthogonal to a plane including both the post-bending optical axis and a pre-bending optical axis of the imaging optical system and includes the post-bending optical axis.

Abstract: A lens optical element including an on-chip lens with a convex surface formed at a top part of a column-shaped portion; and a light emitting surface disposed in a state where the light emitting surface is covered by a bottom portion of the column-shaped portion of the on-chip lens. The relationship between a lens height, which is defined as a height from the light emitting surface to a peak of the convex surface, a thickness of the column-shaped portion, and a refractive index of a structural material of the on-chip lens is set so that when the light emitting surface emits light, a state is produced where the convex surface of the on-chip lens appears to have uniform brightness.

Abstract: A method of designing lenses includes defining a material having an inside reflective surface spanning an area, and providing an optical design algorithm which defines a plurality of oxels across the area. Each oxel has a plurality of sub-elements including a center sub-element and a plurality of neighboring sub-elements. Based on a defined optical prescription for the inside reflective surface, an optically corrected reference 3D surface is calculated for each oxel having spherical and cylindrical corrections relative to a spherical contour which spans a predetermined field of view (FOV) with respect to a single (common) predetermined reference point. A position of at least a first of the sub-elements for each of the oxels is moved to respective final 3D positions on the optically corrected reference 3D surface, where the moving is constrained to be along an individual line connecting each of the first sub-elements to the single predetermined reference point.

Abstract: An imaging lens includes, in order from an object side, a first positive lens having a convex object-side surface, a second negative lens having a concave image-side surface, a third positive double-sided aspheric lens, a fourth positive lens having a convex image-side surface, and a fifth negative double-sided aspheric lens having a concave image-side surface, wherein the fifth lens image-side surface has pole-change points off an optical axis; and conditional expressions below are satisfied: 0.80<ih/f<1.00??(1) 0.6<TTL/2ih<0.75??(2) 2.3<f3/f<10.3??(3) 0.5<f1/f4<1.4??(4) where f denotes focal length of the imaging lens overall optical system, f1, f3 and f4 denote focal lengths of the first, third and fourth lenses respectively, ih denotes maximum image height, and TTL denotes distance on the optical axis from the first lens object-side surface to the image plane.

Abstract: A lens barrel includes: a fixed frame; a zoom ring rotatably held around an outer periphery of the fixed frame; a contact member; and a biasing member. The zoom ring has a first sliding surface to a fourth sliding surface. When the contact member moves on the first sliding surface, a first load is applied to the biasing member; when the contact member moves on the second sliding surface, a second load greater than the first load is applied to the biasing member; and when the contact member moves on the third sliding surface, a load which varies in a range from the first load to the second load is applied to the biasing member.

Abstract: A photographing lens system 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 and a fifth lens element. The first lens element with refractive power has a convex object-side surface. The second lens element has refractive power. The third lens element with refractive power has a convex object-side surface and a concave image-side surface. The fourth lens element with refractive power has an object-side surface and an image-side surface being both aspheric. The fifth lens element with refractive power has a concave image-side surface, wherein an object-side surface and the image-side surface thereof are aspheric, and the image-side surface of the fifth lens element has at least one convex shape in an off-axial region thereof. The photographing lens system has a total of five lens elements with refractive power.

Abstract: The present invention relates to a head assembly for a laser processing system, preferably a fiber laser processing system. An assembly system allows a secure and a slidingly focusing displacement of a focusing lens assembly relative to a beam path in a laser processing system. The assembly system provides easy replacement of desired focusing lens assemblies. Adaptive modifications are operative to provide computerized processor control of the focusing displacement and detection of an installed optical assembly and position thereof.