Abstract: The optical projection system according to the invention for a display has an imaging display unit, which emits image information at least partly in the form of unpolarized light, and imaging optics, wherein the imaging optics are configured to present a virtual image of image information generated by the display unit in a display area, and wherein the imaging optics are further configured to split the light emitted by the display unit into two partial beam paths each having a different polarization, to rotate the polarization direction of at least one of the two partial beam paths and to subsequently superimpose the two partial beam paths and to present them as a virtual image display in the display area.

Abstract: A method of producing plural pixellated display devices, each having a first component comprising an array of independently controllable pixel electrodes; and a second component comprising an array of pixel filters comprising different types of pixel filters of differing optical transmission characteristics, each pixel filter being associated with a respective one of said pixel electrodes. The first component has some distortion within the array of pixel electrodes causing a variation in pixel electrode pitch between different regions of the array. The second component is applied to the first component to provide misalignment between an alignment reference position on the first component and an alignment reference position on the second component. An array of pixel filters is formed in a neutral framework having a separation distance between each pixel filter that prevents any pixel filter of the array of pixel filters overlapping with more than one of said pixel electrodes.

Abstract: An infrared shielding film includes a laminated body including a high refractive index layer and a low refractive index layer, the high refractive index layer and the low refractive index layer being alternately laminated and including a high refractive index material and a low refractive index material, respectively, and the high refractive index material and the low refractive index material having mutually different refractive indexes. The infrared film also includes a primary reflection unit providing a primary reflection band with reflectivity exceeding 60% in near-infrared region in reflection spectra of the infrared shielding film for incident light angles of 0° and 60°. In a short-wavelength side of the primary reflection band, wavelengths exhibiting 70% reflectivity of the peak value in the primary reflection band are referred to as s(0) nm and s(60) nm, respectively, a relationship s(60) nm>700 nm is satisfied.

Abstract: A microscope apparatus includes: an objective lens; a CCD that constructs an image of a sample S; an illumination intensity change unit for adjusting an intensity of excitation light; a sensitivity adjustment unit for adjusting a detection sensitivity by the CCD; a galvanometer mirror for changing a light focusing position of excitation light at a pupil position of the objective lens; a storage unit that stores, for each observation method, a predetermined intensity, a predetermined detection sensitivity, and the light focusing position; and a control unit that switches the observation method, reads out the intensity, the detection sensitivity, and the light focusing position according to the observation method based on a synchronization signal synchronized with a frame signal for constructing an image, and controls the illumination intensity change unit, the sensitivity adjustment unit, and the galvanometer mirror.

Abstract: An infrared filter includes a transparent substrate, and an infrared-filtering multilayer film. The infrared-filtering multilayer film is coated on the transparent substrate, and the infrared-filtering multilayer film includes a plurality of the first kind of film layers, a plurality of the second kind of film layers, a plurality of the third kind of film layers and a plurality of the fourth kind of film layers, wherein the four kinds of film layers are arranged in order of gradient refractive indexes. At least two kinds of film layers are made of composite materials.

Abstract: A spectrometer assembly is provided having an optical transmission filter including a stack of continuous, non-patterned alternating dielectric and metal layers. Angle-dependent transmission wavelength shift of the optical transmission filter with continuous metal layers is small e.g. in comparison with multilayer dielectric filters, facilitating size reduction of the spectrometer assembly.

Abstract: Disclosed is a multilayer optical film having a structure in which a first resin layer and a second resin layer are alternately laminated, wherein the first resin layer comprises a crystalline naphthalene dicarboxylic-acid polyester and the second resin layer comprises polyethylene terephthalate glycol (PETG). Also disclosed is a method for manufacturing a multilayer optical film comprising (a) melting extrusion a first resin comprising a crystalline naphthalene dicarboxylic-acid polyester and a second resin comprising PETG respectively and then alternately laminating the first resin and the second resin; and (b) elongating the laminated sheet in step (a) and then thermosetting them.

Abstract: A diffraction grating recording medium (3) that enhances the ability to prevent forgery and make security more reliable. The diffraction grating recording medium (3) comprises a first recording region (31) including viewing image unit cells (11a), (12a), (13a) having a light diffraction structure, and a second recording region (32) including hidden image unit cells (2a). The viewing image unit cells of the first recording region (31) has a grating pitch more than the wavelength of visible light, and the hidden image unit cells of the second recording region (32) has a grating pitch less than the wavelength of visible light.

Abstract: The present invention provides an antiglare film having an excellent antiglare property and being capable of suitably preventing an occurrence of scintillation and a decrease in contrast. The film includes a light-transmitting substrate and a diffusion layer. The diffusion layer has a surface roughness and is formed on at least one side of the light-transmitting substrate, wherein the diffusion layer contains organic fine particles (A), organic fine particles (B), and a cured product of a binder component, and satisfies the expressions: (1) rA>rB; (2) ?A<?B; and (3) rB/rA>CB/CA, where CA and CB represent a content ratio of the organic fine particles (A) or the organic fine particles (B) in the diffusion layer, respectively, rA and rB represent an average particle size thereof, respectively, and ?A and ?B represent a refractive index thereof relative to the cured product of the binder component, respectively.

Abstract: This disclosure discloses a display device switchable between a 2D display mode and a 3D display mode, wherein a parallax barrier is disposed between a first polarizer and a backlight to implement glassless-type 3D display. A first transparent electrode, an electroluminescent layer, and a second transparent electrode are sequentially disposed between the first polarizer and the parallax barrier, the first transparent electrode and/or the second transparent electrode at least having a pattern corresponding to opaque stripes of a slit light source. Switchover between the 2D display mode and the 3D display mode may be implemented by controlling whether or not to apply a voltage to the electroluminescent layer. The switchover between a 2D display mode and a 3D display mode may be implemented only by adding an electroluminescent layer, and the thickness of the display device is not increased.

Abstract: A method for producing a light diffusion film having first and second louver structure regions includes the following steps (a) to (d): (a) preparing a composition for light diffusion film; (b) applying the composition for light diffusion film, and forming a coating layer; (c) performing first active energy ray irradiation, and forming a first louver structure region in the lower part of the coating layer, while leaving a louver structure-unformed region in the upper part of the coating layer; and (d) performing second active energy ray irradiation, and forming a second louver structure region in the louver structure-unformed region.

Abstract: An anisotropic light diffusion film includes increased uniformity of the intensity of diffused light in the light diffusion angle region, and the light diffusion angle region has been effectively expanded. An anisotropic light diffusion film includes a first louver structure region and a second louver structure region, in which plural plate-shaped regions having different refractive indices are alternately arranged in parallel along any one direction along the film plane, sequentially from the lower side along the film thickness direction, and the anisotropic light diffusion film includes an overlapping louver structure region in which the upper end of the first louver structure region and the lower end of the second louver structure region overlap each other.

Abstract: An image combiner for a viewing device, such as a night vision device, is disclosed for combining a first image, such as generated symbology, with a second image, such as a view of an outside scene in reduced lighting conditions. A waveguide is provided for capturing the first image from a first viewing direction, and for directing the first image in a second viewing direction, the second viewing direction being substantially coincident with a viewing direction of the second image, such that the first image can combine with the second image. At least a portion of the waveguide is arranged to substantially transmit the second image, such that the second image can pass substantially through the waveguide.

Abstract: Swimming goggles allow a swimmer to see the end of the pool without moving their head while swimming in backstroke. Using a light reflector, a swimmer can view through a backstroke viewing window to view along the backstroke moving direction. Swimmers wearing the goggles can therefore reduce the chance for injury while helping backstroke swimming efficiency.

Abstract: The near-infrared reflective film is a lamination unit including: a high refractive layer containing a first metal oxide particle and a first water-soluble polymer, a low refractive layer containing a second metal oxide particle and a second water-soluble polymer, and a mixed layer that is located between the high refractive layer and the low refractive layer and contains the first metal oxide particle, the second metal oxide particle, and a third water-soluble polymer. The refractive index of the low refractive layer is smaller than the refractive index of the high refractive layer by 0.1 or more. The first metal oxide particle and the second metal oxide particle are different metal oxides.

Abstract: An illumination system for diascopic microscopy comprises a computer (610) with memory (625), a graphics program (605), a display driver (615), and graphical display (600). The display is positioned between a microscope's light source (105, 704) and condenser (110). When activated, the illumination system causes the display to display a predetermined pattern which the light source projects onto the condenser and is then focused by the condenser on a subject (125) to be examined. In conjunction with the microscope's light source, the illumination system emulates the illumination techniques of bright field, dark field, oblique, polarized, monochrome, modulation contrast and phase contrast illuminations.

Abstract: An operation microscope includes: an ordinary light path that guides light from an observation target to an eyepiece; a first secondary light path branched off from the ordinary light path; a second secondary light path merging with the ordinary light path; an imaging unit that images the observation target using light from the first secondary path; a display unit that displays an image based on an image signal from the imaging unit toward the second secondary path; and a reflector provided at a branch point of the ordinary light path and the first secondary light path in such a manner as to be capable of pulling off the branch point, and that bends the ordinary light path by reflection. The first secondary light path extends from the branch point along an extension of the ordinary light path before being reflected.

Abstract: A focusing method for an optical instrument for magnified viewing of an object includes producing at least two images with different focal positions and applying several different sharpness functions. Each function has an absolute extremum which specifies the optimum focal position to be set for the viewing and which lies in a close focus range of the sharpness function adjoined on both sides by a far focus range which contains local secondary extrema. For each of the at least two images an evaluation thereof is performed with the focal position as a variable such that a sharpness function variation direction of the focal position is calculated for each sharpness function in order to arrive at the optimum focal position. A determination is made for main variation direction based on all sharpness function variation directions, which is then used during further focusing.

Abstract: Technologies are generally described for designing a window glazing for a particular geographical location. In some examples, a window glazing can be designed to selectively block sunlight from entering the window during summer when it may be desirable to have inside temperatures substantially lower than outside temperatures. The glazing can also be designed to selectively allow sunlight to enter the window during winter months when heat from sunlight may be desirable to raise indoor temperatures. The glazing can be prepared from a transparent material that can allow substantially full transmission of sunlight.

Abstract: An illuminating device for a microscope may include a holder which carries a plurality of lighting units to be positioned in an illuminating target position. It may also include a pivot system with which the holder can be rotated about a pivot axis such that each lighting unit can be positioned selectively in the illuminating target position, wherein the rotational range of the holder about the pivot axis is less than 360°.