Abstract: The present disclosure provides a reflective polarizer module characterized by comprising: a first light collecting sheet including a first structuring pattern having a first unit light collector, the cross-sectional area of which is reduced progressively upward, which is disposed continuously in a repetitive manner, and collecting a light transmitted from below; a reflective polarizer sheet disposed in a stacked configuration on the top of the first light collecting sheet, and selectively transmitting the light by having a plurality of stacked layers having mutually different refractive indices; and a light recycling improving sheet disposed at the bottom of the reflective polarizer sheet, and randomly changing the polarized direction of the light which is not transmitted through the reflective polarizer sheet but is reflected downward.

Abstract: Methods and systems for generating non-diffracting light sheets for multicolor fluorescence microscopy are disclosed. A method for generating a non-diffracting light patterned Bessel sheet comprises transmitting an input light beam through a Fourier transform lens the input light beam has a spatial intensity pattern at a first plane, and a Fourier plane is formed after the Fourier transform lens to obtain a first light beam; transmitting the first light beam through an annulus mask to obtain a second light beam; and transmitting the second light beam through an excitation objective lens to form a non-diffracting patterned light sheet. A method for generating a non-diffracting light line Bessel sheet comprises transmitting an input light beam at a first lane through an annulus mask to obtain a first light beam; and transmitting the first light beam through an excitation objective lens to form a non-diffracting Bessel light sheet.

Abstract: An absorption element for absorbing radiation incident on the element at a certain wavelength band. The element includes a surface defining a normal direction perpendicular to the surface. The element also includes an array of a plurality of spaced apart nano-pillars extending from the surface at an angle orientation other than the normal direction, which creates angular asymmetry so as to increase the element's absorption response in a particular direction. The nano-pillars are made of a suitable semiconductor material and have a size relative to the wavelength band to absorb the radiation. In one non-limiting embodiment, the nano-pillars are angled at 45° relative to the normal direction and are cone-shaped to broaden their absorption capabilities.

Abstract: Systems and methods of the present disclosure are directed to optics used in absorption cell spectrometers. The absorption cell includes a plurality of mirrors arranged in a manner such that a detection light traverses multiple passes through the fluid within the absorption cell. In some implementations, the detection light is reflected by the plurality of mirrors to form optical paths in more than one plane. In some implementations, the orientation of the mirrors are aligned with specific orientations to provide the desired optical path to the detection light. In one or more embodiments, an alignment apparatus can be used to pre-align the mirrors before they are placed within the absorption cell. The alignment apparatus includes an aperture plate and an adjustable mount to mount one or more mirrors. The mirrors are aligned based on reflected images on the aperture plate laser light incident on the mirrors.

Abstract: A method for phase-contrast microscopy on a specimen, and the microscope and optical unit for carrying out the method, is provided. The specimen is arranged in a vessel having an object liquid, in which a component of an illumination beam, which serves as direct radiation and has not been diffracted by the sample, is applied to a phase-shifting element, is characterized in that the illumination beam is deflected before it enters the object liquid by way of an optical deflection element which is changeable in terms of position and/or shape so as to compensate for a change in the main radiation direction of the illumination beam that occurs due to optical refraction at the object liquid.

Abstract: An optical filter may include a substrate. The optical filter may include a set of alternating high refractive index layers and low refractive index layers disposed onto the substrate to polarization beam split incident light. The set of alternating high refractive index layers and low refractive index may layers may be disposed such that a first polarization of the incident light with a spectral range of less than approximately 800 nanometers (nm) is reflected by the optical filter and a second polarization of the incident light with a spectral range of greater than approximately 800 nm is passed through by the optical filter. The high refractive index layers may be hydrogenated silicon (Si:H). The low refractive index layers may be silicon dioxide (SiO2).

Abstract: According to one embodiment, there is an article including a glass-ceramic substrate having a major surface, an optical coating is disposed on the major surface and forms an appearance-enhancing surface, the optical coating including a appearance-enhancing coating, and a scratch-resistant layer. The article exhibits a hardness of 8 GPa or more, and a photopic average diffuse light reflectance measured at the appearance-enhancing surface of one of: (i) about 0.3% or less; (ii) about 0.2% or less; (iii) about 0.1% or less, over an optical wavelength regime in the range from about 400 nm to about 800 nm. Further, in the (L*, a*, b*) colorimetry system of the International Commission on Illumination, at near-normal incidence, the article comprises a diffuse reflectance dE* of one of: (i) about 3 or less; (ii) about 2 or less; or (iii) about 1 or less, where dE* is defined as dE*=sqrt(L*2+a*2+b*2).

Abstract: A stretcher for processing a film is described. In particular, stretcher receives a film, graps edge portions of the film, conveys the film in a machine direction, and moves the opposing edge portions along diverging; substantially parabolic paths to form a stretched film.

Abstract: Optical or light diffusers (or, simply, “diffusers”) designed and manufactured to include numerous facets arranged in cells or sets in which the planar faces or outward-facing surfaces have orientations and transmission angles (as may be defined by direction cosines of normal) to redirect received light to a region or portion of a predefined light distribution. A method of designing or defining the facets of the diffuser is also provides as are methods of manufacturing the diffusers and apparatus or products that include the new diffusers (such as microdisplays and lighting components). The diffusers are optically designed to produce a user-specified distribution of light. The diffusers can be engineered through the configuration of the facets on its front or outer surface (light transmission surface) to produce nearly any type of light distribution or shape, and the diffuser design facilitates their manufacture using extrusion processes as well as other fabrication techniques.

Abstract: A polarizing film, wherein transparent protective films are laid, respectively, on/over both surfaces of a polarizer to interpose an adhesive layer (a) and an adhesive layer (b), respectively, between both the surfaces and the transparent protective films. The adhesive layer (a) has a glass transition temperature of ?60° C. or higher and lower than 40° C. The adhesive layer (b) has a glass transition temperature of 40° C. or higher. The adhesive layer (a) is a layer formed in the form of a cured product layer yielded by radiating an active energy ray to an active-energy-ray-curable adhesive composition (a). The active-energy-ray-curable adhesive composition (a) comprises at least one or more radical polymerizable compounds, and when a total amount of the radical polymerizable compound(s) is defined as 100% by weight, one or more alkyl (meth)acrylates (A) (each) having 10 to 20 carbon atoms are comprised in a proportion of 15% or more by weight.

Abstract: An anastigmat Korsch telescope with three aspherical mirrors includes a bearing structure having a first face to which the first mirror is attached, a hollow structure of a shape elongated in a direction substantially perpendicular to the plane of the central aperture, limited by walls attached to the inside of which are the second mirror in a portion of the hollow structure located in front of the first mirror, and at least one other mirror selected from the third mirror and the at least one deflecting mirror, the walls having at least one first aperture so as to allow a light beam to pass through coming from the object originating from the first mirror and heading toward the second mirror, the bearing structure further comprising means of attachment of the hollow structure to the bearing structure, at least one structure selected from the hollow structure and the bearing structure having a portion traversing the central aperture.

Abstract: A lens driving device includes two pairs of an image-stabilization coil part and an image-stabilization magnet part disposed along a first side and a second side that are adjacent to each other, respectively. An autofocus movable part is disposed eccentrically with respect to a central axis along the direction of the optical axis. An image-stabilization fixed part includes connection terminal parts that are respectively disposed on the first side and the second side, and are connected to power supply wiring of the image-stabilization coil part.

Abstract: Disclosed herein are an apparatus and method for forming a 3D holographic image using non-periodically structured optical elements. The 3D holographic image apparatus includes a light source configured to radiate light, a spatial light modulator configured to modulate the light projected by the light source, and a non-periodic optical element configured to modulate incident light by refracting, diffracting or reflecting the direction of the incident light in a plurality of directions when the light modulated by the spatial light modulator is incident. A 3D holographic image may be formed based on the light modulated by the non-periodic optical element.

Abstract: Provided is a substrate with low-reflection property having small changes in reflected light and color between a principal surface and a side surface when it is visually recognized, and including high displayability in a front substrate or the like which is disposed while exposing the side surface. A substrate 10 with low-reflection property includes: a transparent substrate 11; a first low-reflection film 12 provided on one principal surface of the transparent substrate 11; and a second low-reflection film 13 provided on a side surface of the transparent substrate 11, wherein luminous reflectance Rtot of the first low-reflection film 12 provided on one principal surface is 1.5% or less, luminous reflectance Rs of the second low-reflection film 13 provided on the side surface is 2.5% or less, chromaticity a* is 0 to 4, and chromaticity b* is 3 to 9.

Abstract: There are provided a reflecting module for optical image stabilization (OIS) and a camera module including the same. The reflecting module for OIS includes: a housing including an internal space; a movable holder supported in the internal space of the housing by an elastic member; a reflecting member disposed on the movable holder; and a driving part configured to provide driving force to the movable holder so that the movable holder is moved relative to the housing, wherein the elastic member includes a fixed frame fixed to the housing, a movable frame provided in the fixed frame, and a spring connecting the fixed frame and the movable frame to each other and, the movable frame is movable in relation to two axes perpendicular to each other.

Abstract: An illumination arrangement for a light sheet microscope, in which a sample is illuminated using an illumination light beam that is formed as a light sheet in a region of the sample, includes an illumination objective, a tube lens and astigmatic optics. The astigmatic optics are designed in such a way and arranged between the tube lens and the illumination objective in such a way that the illumination light beam exiting from the illumination objective is focused both in a sagittal plane and in a meridional plane.

Abstract: Single-stage polarization interference filters (PIFs) which produce sinusoidal transmission spectra useful for (Red, Green, Blue) color enhancement (CE). The depth of the CE effect can be modulated by rotating a polarizer. Further, a color suppression (CS) (Cyan/Yellow) state is obtained by rotating a polarizer to the orthogonal state, and a spectrally flat neutral state is obtained at an intermediate polarizer orientation. Described are CE filters that are very stable in transmitted lumens and white-point during tuning, which can, for example, substantially eliminate the need for image post-processing. Tunable CE filters can be used for sensors, image capture, display, tunable light sources, augmented reality, virtual reality, and sunglass eyewear applications. Further described are camera filters with a unique two-step tuning mechanism, which allows photographers to make independent adjustments to functional filter characteristics using a single hand in a sequential manner.

Abstract: A polarizing film, wherein transparent protective films are laid, respectively, on/over both surfaces of a polarizer to interpose an adhesive layer (a) and an adhesive layer (b), respectively, between both surfaces of a polarizer, and transparent protective films. The adhesive layer (a) on/over one of both the surfaces has a glass transition temperature of ?60° C. or higher and lower than 40° C. The adhesive layer (b) on/over the other surface has a glass transition temperature of 40° C. or higher. The adhesive layer (a) is a layer formed in the form of a cured product layer yielded by radiating an active energy ray to an active-energy-ray-curable adhesive composition (a). The active-energy-ray-curable adhesive composition (a) comprises, as radical polymerizable compounds, a component A having a logPow of ?2 to 2, and a component B having a logPow more than 7, these logPow values being each an octanol/water distribution coefficient.

Abstract: A system combines an operating microscope and an endoscope. The operating microscope includes a light source with a first color temperature that illuminates a first portion of an operating field. The endoscope includes an LED light source with a second color temperature that illuminates a second portion of the operating field, wherein the two color temperatures are matched to one another in such a way that, in optical and/or digital imaging of the operating microscope and/or in optical and/or digital imaging of the endoscope, there are no perceivable color differences in portions of the operating field that are illuminated and observed jointly by the operating microscope and the endoscope.

Abstract: Problem: To provide an observation auxiliary device that can appropriately and readily perform observation using an exciting light as a light source. Resolution Means: Provided are an imaging unit 104 that uses a light emitted from a second beam splitter 202 of a microscope 2 that can use an exciting light and an observation light, which is a light including a wavelength other than that of the exciting light, as a light source by switching there between and is provided with the second beam splitter 202 to image images of the same observation region of the microscope 2 in situations where the exciting light and the observation light are used as the light source and an output unit 106 that overlaps, synthesizes, and outputs the images imaged by the imaging unit 104 respectively using the exciting light and the observation light as the light source.