Abstract: A partial reflector including a plurality of optical repeat units where each optical repeat unit includes first and second polymer layers is described. A refractive index difference between the first and second polymer layers along a first axis may be ?ny, a refractive index difference between the first and second polymer layers along an orthogonal second axis may be ?nx, where |?nx| is at least 0.1 and |?ny| is no more than 0.04. The optical repeat units may have a smallest optical thickness T1 proximate a first side of the optical stack and a largest optical thickness T2 proximate an opposite second side of the optical stack, where (T2?T1)/(T2+T1) can be a range of 0.05 to 0.2, and T2 can be at least 350 nm and no more 1250 nm. The partial reflector may be used in a circular polarizer for correcting color shift with view angle in a display.

Abstract: A polarization film includes: a base substrate in which a folding axis and a stretched axis are defined; and a deformation portion located at an edge of the base substrate. The stretched axis forms an angle of less than about 45° with respect to the folding axis. The display device, in which a folding area at which a folding axis is located and a non-folding area neighboring the folding area are defined, includes a display panel; a first adhesive layer on the display panel; and a polarization film on the first adhesive layer, where a stretched axis is defined in the polarization film. An angle between the folding axis and the stretched axis is less than about 45°.

Abstract: Embodiments of this application provide a camera module and an electronic device. The camera module is configured to be mounted in the electronic device. The camera module includes a bracket, an optical image stabilization motor, an automatic focus motor, a reflecting prism, a camera lens, and a lens holder. The reflecting prism is disposed in the optical image stabilization motor, the camera lens is disposed in the automatic focus motor, and the camera lens is connected to the lens holder. The optical image stabilization motor, the automatic focus motor, and the lens holder are disposed within the bracket and are sequentially arranged in a first direction. The first direction is an optical axis direction of the camera lens, and a plane on which the lens holder is located is disposed perpendicular to the optical axis direction.

Abstract: A camera module includes a lens module including at least one lens, a housing accommodating the lens module, and a driving magnet including first and second magnets disposed on the lens module at an interval. The lens module is supported by the housing with a ball member interposed therebetween. The ball member includes two ball members disposed between inner sides of the first and second magnets in an optical axis direction. The first and second magnets are both disposed on one surface of the lens module.

Abstract: The disclosure introduces a technique to expand the aperture of an optical system like an Autocollimator by interconnecting two or more rhomboidal prisms in a sequential manner. This method involves securing the initial rhomboid to the autocollimator's aperture using a rotating component at its base. Subsequently, a second rotating component is attached to the exit end of the first rhomboid, enabling individual rotation for both rhomboids. These prisms are coated with distinct partial mirror coatings. The processing of the reflected image from these rhomboids are conducted to ascertain the deviation in the line of sight caused by their presence and positioning. A microprocessor computes the measurement of the back reflected beams concerning the rhomboids' positions, determining beam deviations resulting from imperfections in the manufacturing of the rhomboids.

Abstract: A light control film includes a first portion and a second portion laminated to the first portion. The first portion includes a first functional substrate and a plurality of first louvers formed on the first functional substrate. The first functional substrate includes at least one of an optically active layer and a barrier layer. The second portion includes a second functional substrate disposed distal to the first functional substrate and a plurality of second louvers formed on the second functional substrate. The second functional substrate includes at least one of an optically active layer and a barrier layer. The plurality of first louvers extend along a first direction and the plurality of second louvers extend along a second direction. The first direction and the second direction are inclined to each other at an angle that lies within a range from about 70 degrees to about 110 degrees.

Abstract: The present application provides a light-ray modulating element, an eyeglass and a 3D displaying system. The light-ray modulating element is applied to a 3D displaying system, the 3D displaying system includes a 3D displaying device, and the 3D displaying device includes a display panel, and a lens unit disposed at a light exiting side of the display panel; light rays emitted by the display panel pass through the lens unit, are shot to the light-ray modulating element, and form two first viewpoint units at a light entering side of the light-ray modulating element, wherein each of the first viewpoint units includes at least two first viewpoints; and the light-ray modulating element is configured for converging light rays emitted by each of the first viewpoint units to form a second viewpoint unit.

Abstract: A transparent wear-resistant, in particular scratch and/or impact-resistant, element is provided. The element includes a substrate, a layer system on a first surface of the substrate, and a reflectance at a second surface of the substrate of 2% in a visible spectral range of wavelengths from 380 nm to 780 nm. The glass or glass ceramic substrate is transparent in the visible spectral range. The layer system has two successive layers deposited on the first surface, where the two successive layers are each made of inorganic compounds. The two successive layers include a first layer with a first refractive index (n1) and a second layer with a second refractive index (n2), where the second refractive index (n2) is a value of at least 1.60. The first refractive index (n1) is greater than the second refractive index (n2) and a difference of the first and second refractive indices (n1?n2) is at least 0.05.

Abstract: In one aspect, a night vision recording and display module for removably attachment to night vision monocular device is provided. In another aspect, a night vision recording and display module further includes an integrated camera, preferably a thermal camera, which produces a video image which can be superimposed with the night vision display output. In yet further aspects, combinations or kits comprising the modular night vision systems disclosed herein in combination with the night vision devices are provided.

Abstract: Methods and systems are provided for an automatic lens cleaning system incorporated into a system. The system includes an imaging device, a reversibly coupled table configured to reversibly couple to the imaging device, a communication interface including a first lens of the imaging device and a second lens of the reversibly coupled table, and the automatic lens cleaning system. The automatic lens cleaning system includes a bellow positioned at a coupling interface between the imaging device and the reversibly coupled table, and at least one nozzle fluidly coupled to the bellow and configured to direct a flow of gas towards at least one of the first lens or the second lens.

Abstract: Provided are a display apparatus, a method for controlling a display apparatus, and a holographic three-dimensional (3D) display screen. The display apparatus includes a display module and an adjustment module. A deflection device of the display module is configured to make an image move at least in a first direction. An actuation device of the adjustment module is configured to move or rotate the display module so that the image moves at least in a second direction. The actuation device is added in the display apparatus. The deflection device is controlled to follow the movement direction of the human eye to make the image move in at least a part of the component directions of the movement direction of the human eye on the plane where the deflection device is disposed.

Abstract: Image sensors and devices for phase-detection auto focus processes are provided. A symmetric polarization filter includes a first polarizer defining a first plurality of apertures and a second polarizer adjacent with the first polarizer defining a second plurality of apertures. The first plurality of apertures can be mirror symmetrical with the second plurality of apertures about a lateral axis of the symmetric polarization filter between the first polarizer and the second polarizer. The lateral axis can be defined as an axis of symmetry of the symmetric polarization filter in plane with the first polarizer and the second polarizer.

Abstract: The disclosure relates to the technical field of optical systems, and relates to a lens module and an electronic device. The lens module includes a bearing structure, a support frame, a lens barrel, and an adjusting mechanism. The bearing structure includes an upper shell and a base that are connected with each other. In the lens module of the present embodiment, by adopting a bent portion spaced apart from the side wall to cooperate with the focus coil, the internal space of the upper shell can be fully utilized to make the structure between the focus assembly and the upper shell more compact, thereby making the overall structure of the lens module more compact.

Abstract: A hologram acquisition apparatus and a hologram acquisition system are disclosed. A hologram acquisition apparatus includes a beam splitter configured to split light emitted from an object into a first beam and a second beam, a first reflective optical element configured to receive and emit the first beam to the beam splitter, and a second reflective optical element configured to receive and emit the second beam to the beam splitter and formed as an annular spherical array having discontinuous surfaces, wherein the second reflective optical element has a plurality of segment regions that are concentric and divided to have the discontinuous surfaces and, the plurality of segment regions are formed to have the same focal point.

Abstract: An optical lens assembly is provided. A plurality of infrared light beams emitted from a structured light generating unit having a plurality of light sources pass through the optical lens assembly to generate a plurality of light beams. A direction facing the structured light generating unit is a light input side, and an opposite side is a light output side. The optical lens assembly includes a first lens element, a second lens element and a third lens element arranged along an optical axis in a sequence from the light output side to the light input side.

Abstract: A coated article is described herein with a substrate having a major surface that comprises a first portion and a second portion that is curved or faceted; and an optical coating on the major surface that forms an anti-reflective surface. A first direction is normal to the first portion and is not equal to a plurality of second directions that are normal to the second portion, and the angle between the first direction and each of the second directions is from about 10 degrees to 60 degrees. Further, the coated article exhibits at the first and second portion a hardness of about 8 GPa or greater at an indentation depth of about 100 nm or greater. Further, the coated article exhibits a single side maximum reflectance of about 3% or less as the first and second portion, wherein the reflectance is measured in a range from about 425 nm to about 950 nm.

Abstract: A polarizing film having a pressure-sensitive adhesive layer, said polarizing film comprising a polarizer film and a first transparent protective film, wherein a first pressure-sensitive adhesive layer is provided on the first transparent protective film side of the polarizing film. The polarizer film has a film thickness of 20 ?m or less; the first pressure-sensitive adhesive layer is used for the bonding of a front transparent member that is arranged at the viewing side of an image display device, while having a difference between the saturation moisture percentage (A) at 80° C. at 85% R.H. and the saturation moisture percentage (B) at 25° C. at 50% R.H., namely ((A)?(B)) of 1.0% by weight or more. This polarizing film having a pressure-sensitive adhesive layer is able to suppress decrease in the single transmittance of the polarizing film in a high temperature environment.

Abstract: An optical photographing assembly includes, in order from an object side to an image side along an optical axis, 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 has positive refractive power. The third lens element has at least one of an object-side surface and an image-side surface being aspheric. The fourth lens element has at least one of an object-side surface and an image-side surface being aspheric. The fifth lens element has at least one of an object-side surface and an image-side surface being aspheric, wherein at least one of the object-side surface and the image-side surface of the fifth lens element includes at least one inflection point.

Abstract: The wire grid polarizers 10 and 30 described herein, and wire grid polarizers made by methods described herein, can have high performance across a broad range of the ultraviolet spectrum and across a broad angle of incidence. These polarizers can be durable (resistant to heat, moisture, ultraviolet light, and oxidation). The polarizer can include an array of wires 15 on a substrate 11. Each wire 15 can have a silicon core 12 and a pair of silicon dioxide ribs 13. The core 12 can be sandwiched between the pair of ribs 13, with each rib 13 adjacent to a sidewall 12s of the core 12. A rib width W13 can be ?4 nm. Each wire 15 can also include a silicon dioxide cap 14. The core 12 can be encircled by a silicon dioxide ring 17.

Abstract: The present disclosure provides a retroreflective article. The retroreflective article includes a retroreflective layer including a number of cube corner elements that collectively form a structured surface that is opposite a major surface, and a conformal wavelength-selective radiation absorbing coating layer adjacent to the structured surface. The present disclosure also provides a method of making a retroreflective article. The method includes obtaining a retroreflective layer, and forming a conformal wavelength-selective radiation absorbing coating layer on the retroreflective layer by applying a first material having a first binding group to the structured surface, and applying a second material having a second binding group to the first material.