Abstract: An elongated rectangular Rochon polarizer, e.g., having a height to width or depth ratio of at least 2.5, is securely held in a non-adhesive mounting assembly. The mounting assembly includes a plurality of compression elements that press the Rochon polarizer against corresponding reference points to properly align the Rochon polarizer within the mounting assembly. Moreover, air gaps between the Rochon polarizer and the sidewalls of the mounting assembly are provided to minimize thermal conduction between the mounting assembly and the Rochon polarizer and to provide thermal convection to cool the Rochon polarizer, thereby reducing risk of catastrophic delamination of the Rochon polarizer due to thermal effects.

Abstract: An oscillating structure includes first and second torsional elastic elements that define an axis of rotation and a moving element that is interposed between the first and second torsional elastic elements. The moving element, the first torsional elastic element and the second torsional elastic element lie in a first plane and are not in direct contact with one another. A coupling structure mechanically couples the moving element, the first torsional elastic element and the second torsional elastic element together. The moving element, the first torsional elastic element and the second torsional elastic element lie in a second plane different from the first plane. Oscillation of the moving element occurs as a result of a twisting of the first and second torsional elastic elements.

Abstract: The object of the invention is to obtain a solar radiation shielding member that has a good visible light transmittance and shows no redness when viewed from the front and when obliquely viewed, without impairing the solar radiation transmittance. A solar radiation shielding member, wherein a first dielectric film, a first metal film, a second dielectric film, a second metal film, a third dielectric film, a third metal film, and a fourth dielectric film are stacked on a transparent substrate; the first dielectric film comprises at least two dielectric layers containing a layer having a refractive index of 2.4 or greater, and the first dielectric film as a whole has a refractive index in a range of 1.8-2.

Abstract: A compact and robust microelectromechanical reflector system that comprises a support, a reflector, a peripheral edge of the reflector including edge points, and suspenders including piezoelectric actuators and suspending the reflector from the support. Two pairs of suspenders are fixed from two fixing points to the support such that in each pair of suspenders, first ends of a pair of suspenders are fixed to a fixing point common to the pair. A first axis of rotation is aligned to a line running though the two fixing points, and divides the reflector to a first reflector part and a second reflector part. In each pair of suspenders, a second end of one suspender is coupled to the first reflector part and a second end of the other suspender is coupled to the second reflector part.

Abstract: In some aspects, an afocal adaptor for an optical device comprises a housing. The housing includes a first and a second optical channel. A divider is configured between the first optical channel and the second optical channel to prevent transmission of electromagnetic radiation between the first optical channel and the second optical channel. At least one lens is associated with each of the first optical channel and the second optical channel. A particular at least one lens is configured to provide a focal point for each of the first optical channel and the second optical channel and to guide a particular type of electromagnetic radiation through each of the first optical channel and the second optical channel. The electromagnetic radiation is guided into a corresponding first receiving optical channel and a second receiving optical channel associated with the optical device. A coupling mechanism is attached to the housing and configured to permit attachment of the housing to the optical device.

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: The present invention suppresses an increase in optical system curvature, thereby enabling miniaturization. An image forming unit reflects image light beams, which were projected from each region along a first direction of a display, towards a reflection unit so that the image light beams intersect between the image forming unit and the reflection unit. A light distribution adjustment unit is disposed between a light source and a display, and in the first direction, adjusts the orientation of illumination light beams projected from the light source so that the illumination light beams are incident on the display as convergence light.

Abstract: Ion implantation is used to fabricate an optical device having a varying refractive index. The optical device can include a substrate with a material disposed on the substrate. A refractive index of the material is changed by ion implantation. The material can also be etched or imprinted. The optical device can be used in a virtual-reality system or augmented-reality system to provide angular selectivity from a display to a user's eye.

Abstract: An optical stack includes a liquid crystal panel with a color filter array. The liquid crystal panel has a filter side closest to the color filter array and a non-filter side opposite the filter side. An absorbing polarizer is laminated directly to the filter side of the liquid crystal panel, and a reflective polarizer laminated directly to the absorbing polarizer.

Abstract: Disclosed herein are techniques for structured light pattern generation. A method for generating a one-dimensional structured light pattern in a first direction and with a desired intensity pattern includes generating a plurality of one-dimensional light patterns using a two-dimensional diffractive optical element with different periods in two orthogonal directions, and combining the plurality of one-dimensional light patterns to form the one-dimensional structured light pattern with the desired intensity pattern. Each of the one-dimensional light patterns includes a one-dimensional light pattern in the first direction. The plurality of one-dimensional light patterns is distributed in a second direction different from the first direction. A separation angle between each pair of adjacent one-dimensional light patterns of the plurality of one-dimensional light patterns in the second direction and with respect to the two-dimensional diffractive optical element is less than a threshold value.

Abstract: A Mirau interference objective includes an objective lens and a splitter element arranged between the objective lens and an object to be examined. The splitter element is configured to split an incident light beam into a sample beam path and a reference beam path. The objective lens is configured to focus the sample beam path on the object to be examined. A mirror element is arranged between the splitter element and the objective lens. The mirror element is configured to reflect the reference beam path. A phase shift compensating element is configured to compensate for a wavelength-dependent phase shift between the reference beam path and the sample beam path which is superposed on the reference beam path.

Abstract: An optical image lens assembly includes, from an object side to an image side, at least one optical lens element. The optical lens element is made of plastic material and includes a long wavelength light absorbing agent. The long wavelength light absorbing agent is uniformly mixed with the plastic material, wherein the optical lens element has refractive power, and at least one of the object-side surface and the image-side surface thereof is aspheric.

Abstract: A diffraction optical element includes a first diffraction grating having a first grating surface and a first grating wall surface, a second diffraction grating having a second grating surface and a second grating wall surface, and a thin film configured to contact the first grating wall surface and the second grating wall surface. The predetermined conditions are satisfied.

Abstract: A structured light projector comprising: a light source emitting light of a first wavelength; at least one switchable grating switchable between a non-diffracting and a diffracting state; and at least one passive grating. At least one of the switchable and passive gratings provides a first grating configuration for projecting uniform illumination in a first interval of time. At least one of the switchable and passive gratings provides a second grating configuration for projecting structured illumination in a second interval of time.

Abstract: The disclosure relates to a hydrophobic mirror. The hydrophobic mirror includes a support; a mirror body set in the support; and a hydrophobic film located on a surface of the mirror body. The hydrophobic film comprises a flexible substrate and a hydrophobic layer. The flexible substrate comprises a flexible base and a patterned first bulge layer located on a surface of the flexible base. The hydrophobic layer located on the surface of the patterned first bulge layer.

Abstract: An embodiment of the present invention relates to a camera module comprising: a lens a heater disposed on a surface of the lens; and a switch electrode which selectively comes into contact with the heater, wherein a current is supplied to the heater through the switch electrode when the switch electrode and the heater are in contact with each other, the current supply to the heater is cut off when the switch electrode and the heater are spaced apart from each other, and the switch electrode is spaced apart from the heater when the lens reaches a predetermined temperature or higher.

Abstract: An optical scanning device includes: a mirror that has an optical reflection surface; a mirror support unit configured to support the mirror; a pair of drive beams arranged on both sides of the mirror support unit and connected such that the mirror support unit is swingable; a drive source provided on the drive beams and configured to swing the mirror support unit, the drive source including a stack structure of a plurality of piezoelectric thin films; and a piezoelectric sensor formed on a connection beam connected to the drive source or the drive beams, a number of piezoelectric thin films included in the piezoelectric sensor being less than a number of the piezoelectric thin films included in the drive source.

Abstract: Various embodiments herein relate to power distribution networks for optically switchable windows. In some embodiments, a system for monitoring and maintaining a power distribution network of optically switchable windows of a site is provided. The system includes a control panel monitor which is configured to determine a control panel voltage and current at a terminal of a control panel. The system further includes sense circuitry which is configured to determine a first window controller voltage and current for a first window controller of a plurality of window controllers. The system further includes one or more controllers which are configured to generate voltage network data based on a combination of the control panel voltage and current and the first window controller voltage and current. The system then determines an error condition in the power distribution network based on the voltage network data.

Abstract: An optical body includes a first optical transparent layer having quadrangular pyramid-shaped depressions, a wavelength-selective reflecting layer formed on the depressions and selectively reflecting light of a specific wavelength band, and a second optical transparent layer formed on the wavelength-selective reflecting layer. When (?, ?) is taken as the incident angle (?: angle between perpendicular line relative to second optical transparent layer acting as incident surface and light incident on incident surface; ?: angle between specific straight line within incident surface and component resulting from projection of incident light on incident surface), with respect to incident light that is incident on the incident surface from different ? directions at ?=60°, the optical body has an average reflection angle of reflected light to the same quadrant as the incident light of 30° or more.

Abstract: The binocular system 100 includes monoculars 10, 20 in pairs and a coupling portion 30 coupling the monoculars 10, 20 in pairs, wherein: one monocular 10 has a connecting portion 11 on a side of an objective lens 13 thereof; the other monocular 20 has a connected portion 22 connectable to the connecting portion 11 on a side of an eye lens 24 thereof; the coupling portion 30 includes a first coupling portion 31 formed integrally with the one monocular 10, a second coupling portion 32 formed integrally with the other monocular 20, and a hinge portion 33 coupling the first coupling portion 31 and the second coupling portion 32 in such a manner that a mutual bending angle therebetween is adjustable centering around a bending axis B; and the one monocular 10 and the other monocular 20 are detachable from each other.