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NONLINEAR METASURFACES BASED ON PLASMONIC RESONATORS COUPLED TO INTERSUBBAND TRANSITIONS

Thu, 06 Apr 2017 08:00:00 EDT

A nonlinear metasurface structure including a multi-quantum-well layer designed for a nonlinear response for a desired nonlinear optical process and an array of nanoantennas coupled to the intersubband transitions of the multi-quantum-well layer. Each nanoantenna in the array is designed to have electromagnetic resonances at or close to all input and output frequencies of a given nonlinear optical process. Nanoantennas allow efficient coupling of any incident and outgoing light polarizations to intersubband transitions. Nanoantennas may further provide significant field enhancement in the multi-quantum-well layer. As a result, the nonlinear metasurface structure can be designed to produce a highly nonlinear response for any polarization and angle of incidence of incoming and outgoing waves in a nonlinear optical process. Due to their very larger nonlinear response, efficient frequency conversion can be produced in these metasurfaces without the stringent phase-matching constraints of bulk nonlinear crystals.



ELECTROPHORETIC MEDIA INCLUDING CHARGE CONTROL AGENTS COMPRISING QUARTENARY AMINES AND UNSATURATED POLYMERIC TAILS

Thu, 06 Apr 2017 08:00:00 EDT

Improved formulations of electrophoretic media that can be incorporated into displays, front plane laminates, inverted front plane laminates, or color changing films. The formulations include a non-polar fluid, a plurality of first charged particles, and charge control agents (CCA) including a quaternary amine and an unsaturated polymeric tail comprising monomers of at least 10 carbon atoms in length. The formulations show improved switching speeds, as well as a larger dynamic range at low temperatures (i.e., below about 0° C.), where compared to state-of-the-art electrophoretic media.



VARIABLE COLOR AND TRANSMISSION COVERINGS

Thu, 06 Apr 2017 08:00:00 EDT

Variable transmission covering systems that can be used, for example, to control the amount of light passing through a window in a building. Using transmissive electrophoretic media that can switch between a first and second optical state, the invention can be used to change the color and/or transmissivity of a structure (or structures) that is placed in front of an object. In some embodiments, the variable transmission system can change transmission and color on command.



LIGHT-MODULATING ELEMENT AND SMART GLASS

Thu, 06 Apr 2017 08:00:00 EDT

A light-modulating element comprises: first and second transparent substrates arranged in opposition to one another; a first transparent electrode arranged on the opposition surface of the first transparent substrate; a plurality of light transmissive regions arranged between the first transparent electrode and the second transparent substrate so as to be separated from one another; a plurality of second transparent electrodes arranged at respective positions on the second transparent substrate opposing the respective light transmissive regions, and that are arranged so as to be separated by a given distance from the respective light transmissive regions; a plurality of third transparent electrodes arranged individually between the second transparent electrodes at a predetermined distance therefrom on the second transparent substrate side; and an electrophoretic member arranged within a gap formed between the first transparent substrate and the second transparent substrate, and that includes light-shielding electrophoretic particles.



CONTROLLING TRANSITIONS IN OPTICALLY SWITCHABLE DEVICES

Thu, 06 Apr 2017 08:00:00 EDT

Aspects of this disclosure concern controllers and control methods for applying a drive voltage to bus bars of optically switchable devices such as electrochromic devices. Such devices are often provided on windows such as architectural glass. In certain embodiments, the applied drive voltage is controlled in a manner that efficiently drives an optical transition over the entire surface of the electrochromic device. The drive voltage is controlled to account for differences in effective voltage experienced in regions between the bus bars and regions proximate the bus bars. Regions near the bus bars experience the highest effective voltage. In some cases, feedback may be used to monitor an optical transition. In these or other cases, a group of optically switchable devices may transition together over a particular duration to achieve approximately uniform tint states over time during the transition.



FABRICATION OF LOW DEFECTIVITY ELECTROCHROMIC DEVICES

Thu, 06 Apr 2017 08:00:00 EDT

Prior electrochromic devices frequently suffer from high levels of defectivity. The defects may be manifest as pin holes or spots where the electrochromic transition is impaired. This is unacceptable for many applications such as electrochromic architectural glass. Improved electrochromic devices with low defectivity can be fabricated by depositing certain layered components of the electrochromic device in a single integrated deposition system. While these layers are being deposited and/or treated on a substrate, for example a glass window, the substrate never leaves a controlled ambient environment, for example a low pressure controlled atmosphere having very low levels of particles. These layers may be deposited using physical vapor deposition. In certain embodiments, the device includes a counter electrode having an anodically coloring electrochromic material in combination with an additive.



ELECTROCHROMIC DEVICE CONTAINING DISTRIBUTED BRAGG REFLECTOR CONFIGURED TO SELECTIVELY REFLECT UV RADIATION

Thu, 06 Apr 2017 08:00:00 EDT

An electrochromic device and method, the device including a light transmissive first substrate, a working electrode disposed on the first substrate, a counter electrode, a solid state electrolyte layer disposed between the counter electrode and the working electrode, a light transmissive second substrate disposed on the counter electrode, and a Bragg reflector configured to selectively reflect UV radiation away from the working electrode.



Color Changing Materials Arranged in Slow Particle Coloration Materials

Thu, 06 Apr 2017 08:00:00 EDT

Articles comprises iron oxide colloidal nanocrystals arranged within chains, wherein the chains of nanocrystals are embedded within a material used to form the article or a transfer medium used to transfer a color to the article are described. The material or transfer medium includes elastic properties that allow the nanocrystals to display a temporary color determined by the strength of an external force applied to the article, and the material or transfer medium includes memory properties that cause the displayed temporary color to dissipate when the external force is removed, wherein the dissipation of the displayed temporary color is sufficiently slow as to be visually observable by an average observer's unaided eye.



ELECTRO-OPTIC DISPLAY WITH EDGE SEAL

Thu, 06 Apr 2017 08:00:00 EDT

Various types of edge seals for protecting electro-optic displays against environmental contaminants are described. In one type of seal, the electro-optic layer is sandwiched between a backplane and a protective sheet and a sealing material extends between the backplane and the protective sheet. In other seals, the protective sheet is secured to the backplane or to a second protective sheet adjacent the backplane. The electro-optic layer can also be sealed between two layers of adhesive or between one layer of adhesive and the backplane. Other seals make use of flexible tapes extending around the periphery of the display.



ELECTROMAGNETIC DRIVING MODULE AND LENS DRIVING DEVICE USING THE SAME

Thu, 06 Apr 2017 08:00:00 EDT

An electromagnetic driving module is provided which includes a frame, a magnetic element, a base, and an OIS driving coil. The frame surrounds a main axis. The magnetic element is disposed on the frame and has an engaging surface in contact with the frame. The base is arranged to be adjacent to the frame. The OIS driving coil for driving the movement of the frame in a direction that is perpendicular to the main axis is disposed on the base and arranged to correspond to the magnetic element.



LENS BARREL CAPABLE OF ACCURATELY POSITIONING AND FIXING MAGNETIC SENSOR, IMAGE PICKUP APPARATUS, AND IMAGE BLUR CORRECTION DEVICE

Thu, 06 Apr 2017 08:00:00 EDT

A technique enabling accurate positioning of a flexible printed circuit board and a magnetic sensor to an image blur correction device. A lens holding section holds a correction lens in a manner movable in a first direction and a second direction orthogonal to the first direction. A Hall element is mounted on the flexible printed circuit board to detect change in magnetic field of a magnet provided in the lens holding section. A Hall element-holding section holds the Hall element. An area of the flexible printed circuit board where the Hall element is mounted is locked to the Hall element-holding section in a manner movable in the first direction in a state restricted in movement in the second direction. The Hall element is movable relative to the Hall element-holding section in the second direction, in a state restricted in movement in the first direction.



OPTICAL LOW-PASS FILTER AND IMAGING DEVICE PROVIDED WITH OPTICAL LOW-PASS FILTER

Thu, 06 Apr 2017 08:00:00 EDT

An optical low-pass filter (30) includes a vertically splitting birefringent plate (31), a 45° splitting birefringent plate (32), and a 135° splitting birefringent plate (33). The 45° splitting birefringent plate (32) and the 135° splitting birefringent plate (33) are adjacent to each other. The thickness of the 45° splitting birefringent plate (32) is approximately equal to the thickness of the 135° splitting birefringent plate (33). The thicknesses of the 45° splitting birefringent plate (32) and the 135° splitting birefringent plate (33) are each less than the thickness of the vertically splitting birefringent plate (31). The position (point Pal) of incidence of an incident beam (L) on the vertically splitting birefringent plate (31) overlaps with the approximate center of a square split pattern (points P11, P12, P13, and P14) when viewed from the incident beam side.



Ocular Frame for Stereoscopic Image Viewer

Thu, 06 Apr 2017 08:00:00 EDT

A stereoscopic image viewer comprises a frame to be physically coupled to a handheld electronic device. The frame comprises a face plate having a pair of lens sockets with a pair of lenses, and a pair of side arms with a pair of slots to receive the handheld electronic device. The lenses can be coupled in the sockets by twist-to-lock couplings. A forehead pad comprising a squat dome is disposed on the face plate.



OPTICAL STACK AND OPTICAL SYSTEM

Thu, 06 Apr 2017 08:00:00 EDT

Integral optical stacks and optical systems including an image surface, a stop surface and an integral optical stack disposed between the image surface and the stop surface are described. The integral optical stack includes an optical lens, a partial reflector, a multilayer reflective polarizer and a quarter wave retarder. At least one chief light ray transmitted through the stop surface and the image surface passes through the stop surface at an incident angle of at least 40 degrees.



DISPLAY DEVICE

Thu, 06 Apr 2017 08:00:00 EDT

An HUD unit is equipped with a first display and a second display. The light irradiating directions of the first display and the second display are adjusted so that the first image irradiated from the first display, reflected by the front window of a vehicle and visually recognized by the driver of the vehicle and the second image irradiated from the second display to the eye point of the driver and visually recognized by the driver are visually recognized in a state of being arranged side by side.



MULTI-BEAM SCANNER AND CONFOCAL OPTICAL SYSTEM INCLUDING THE SAME

Thu, 06 Apr 2017 08:00:00 EDT

A multi-beam scanner may include a scan lens and a reflecting mirror. The scan lens may have eccentric incidence points offset from a center point of the scan lens to which at least two light beams may be irradiated. The scan lens may be configured to concentrate the light beams. The concentrated light beams may be incidence to the reflecting mirror. Thus, an object may be scanned by the light beams using only one scan lens so that the multi-beam scanner may have a less complex structure.



ELECTROWETTING DEVICE WITH MULTI LAYER SUPPORT PLATE

Thu, 06 Apr 2017 08:00:00 EDT

An electrowetting element comprising a first fluid and a second fluid immiscible with the first fluid. A support plate includes an electrode and, located between the electrode and the first fluid, a first layer and a second layer. The first layer comprises an inorganic material and the second layer comprises an organic material. The first layer is in contact with the second layer and between the second layer and the first fluid.



Domestic Heliostat and Methods of Making Same

Thu, 06 Apr 2017 08:00:00 EDT

A heliostat contained within a mechanical enclosure is described that optimizes the heliostat for domestic applications by emphasizing features of durability, protection from outside weather, low cost of manufacture, self-powering, light-weight, and aesthetics.



Near-Infrared Hybrid Lens Systems With Wide Field Of View

Thu, 06 Apr 2017 08:00:00 EDT

A near-infrared hybrid lens system for imaging a wide field-of-view scene onto an image plane includes (a) a first cast lens positioned closest to the scene and at least partly transmissive to near-infrared light, (b) a second cast lens positioned closest to the image plane and at least partly transmissive to near-infrared light, and (c) a wafer-level lens at least partly transmissive to near-infrared light and disposed between the first cast lens and the second cast lens, wherein the wafer-level lens has (i) a planar substrate with a first surface facing away from the image plane and a second surface facing the image plane, (ii) a first lens element disposed on the first surface, and (iii) a second lens element disposed on the second surface.



WIDE-ANGLE OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS USING THE SAME

Thu, 06 Apr 2017 08:00:00 EDT

A wide-angle optical system includes in order from an object side to an image side, a first lens having a negative refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, an aperture stop, a fourth lens having a positive refractive power, and a fifth lens. An object-side surface of the first lens is convex toward the object side, and the following conditional expression (1) is satisfied. 1.0



Three-Surface Wide Field-Of-View Lens System

Thu, 06 Apr 2017 08:00:00 EDT

A three-surface wafer-level lens system for imaging a wide field-of-view scene onto an image plane includes (a) a first wafer-level lens with (i) a first substrate having a first planar surface facing the image plane, and (ii) a first lens element bonded to the first planar surface and having a first lens surface facing the image plane, and (b) a second wafer-level lens with (i) a second substrate having a second planar surface facing away from the image plane, (ii) a third substrate bonded to the second substrate and having a third planar surface facing the image plane, (iii) a second lens element bonded to the second planar surface and having a second lens surface facing away from the image plane, and (iv) a third lens element bonded to the third planar surface and having a third lens surface facing the image plane.



SUBMINIATURE OPTICAL SYSTEM AND PORTABLE DEVICE INCLUDING THE SAME

Thu, 06 Apr 2017 08:00:00 EDT

There are provided a subminiature optical system having a miniature size and capable of obtaining a narrow view angle using only five sheets of lenses, and a portable device having the same. The subminiature optical system includes a first lens convex toward the object side and having positive refractive power, a second lens concave toward an image side and having negative refractive power, a third lens convex toward the object side and having positive refractive power, a fourth lens concave toward the image plane and having negative refractive power, and a fifth lens convex toward the image plane and having negative or positive refractive power, sequentially from an object side.



SUBMINIATURE OPTICAL SYSTEM AND PORTABLE DEVICE INCLUDING THE SAME

Thu, 06 Apr 2017 08:00:00 EDT

There are provided a subminiature optical system having a miniature size and capable of obtaining a narrow view angle using only five sheets of lenses, and a portable device having the same. The subminiature optical system includes a first lens convex toward the object side and having positive refractive power a second lens concave toward an image side and having negative refractive power, a third lens convex toward the object side and having positive refractive power, a fourth lens concave toward the image plane and having negative refractive power, and a fifth lens convex toward the image plane and having negative or positive refractive power, sequentially from an object side.



PHOTOGRAPHING OPTICAL LENS ASSEMBLY

Thu, 06 Apr 2017 08:00:00 EDT

A photographing optical lens assembly includes five lens elements with refractive power, in order from an object side to an image side. The first lens element with refractive power has a convex object-side surface. The second lens element with positive refractive power has an object-side surface and an image-side surface both being aspheric. The third lens element has positive refractive power. The fourth lens element with refractive power has a concave object-side surface. The fifth lens element with refractive power has an object-side surface and a concave image-side surface with at least one inflection point, both the object-side surface and the image-side surface being aspheric.



Image Pick-Up Lens System and Module and Terminal Therefor

Thu, 06 Apr 2017 08:00:00 EDT

The present invention provides an image pick-up lens system, an imaging module having the image pick-up lens system, and a terminal having the imaging module. The image pick-up lens system comprises the following lenses arranged sequentially from an object side to an image side: a first lens with positive focal power; a second lens with negative focal power, having a convex object-side surface; a third lens with negative focal power; a fourth lens with focal power; a fifth lens with positive focal power, having a convex image-side surface; and a sixth lens with focal power, having a concave image-side surface near an optical axis, wherein, the lenses meet the following relational expression: 5.5



ZOOM LENS

Thu, 06 Apr 2017 08:00:00 EDT

A zoom lens comprises a focus driving mechanism and a zoom driving mechanism and corresponding lens groups. The zoom driving mechanism is sleeved outside the focus driving mechanism. The focus driving mechanism is a voice coil motor and comprises a focus stator assembly (7a1) and a focus rotor assembly (7a2) that are connected by means of an elastic connection member (7a3). One of a focus stator sleeve (7a11) in the focus stator assembly and a focus rotor sleeve (7a21) in the focus rotor assembly is a permanent magnet sleeve, and the other of the focus stator sleeve (7a11) and the focus rotor sleeve (7a21) is a non-magnet sleeve, and the assembly to which the non-magnet sleeve belongs further comprises a preliminary magnetic member (7a22) and a driving coil (7a23). Due to the magnetic force pre-existing between the preliminary magnetic member and the permanent magnet sleeve, the elastic connection member is in a force balanced state without electrification, so that a smaller electromagnetic force is required for driving the elastic connection member, and accordingly the driving current and power consumption are reduced. Moreover, because the zoom driving mechanism is sleeved outside the focus driving mechanism, a large aperture can be easily realized, and installation and implementation are easier.



Two-Surface Narrow Field-Of-View Compounds Lens

Thu, 06 Apr 2017 08:00:00 EDT

A two-surface narrow field-of-view (FOV) compound lens for producing an image of an object at an image plane of an imaging system includes a biplanar substrate between a plano-convex lens and a plano-concave lens having a common optical axis. The plano-convex lens has a first planar surface on a first side of the biplanar substrate and is formed of a material having a first Abbe number. The plano-concave lens has a second planar surface on a second side of the biplanar substrate opposite the first side, and is formed of a material having a second Abbe number less than the first Abbe number. The first and second lens have respective focal lengths F1 and F2 that may satisfy −1.4



MOBILE DEVICE AND OPTICAL IMAGING LENS THEREOF

Thu, 06 Apr 2017 08:00:00 EDT

An optical imaging lens includes four lens elements positioned in order from the object side to the image side of the optical imaging lens. Through controlling the convex or concave shape of the surfaces of lens elements, the refracting power of lens elements, the thickness of the at least one lens element, one or more air gaps between lens elements along the optical axis, and a half field of view HFOV of the optical imaging lens, an embodiment satisfies the relation: 4.21≦T3/(G12×tan(HFOV))≦7.55, for which T3 is the thickness of the third lens element and G12 is the air gap between the first lens element and the second lens element. The optical imaging lens provided by embodiments of the present invention has better optical characteristics and a reduced total length in comparison to conventional lenses.



LOW INTERFERENCE OPTICAL MOUNT

Thu, 06 Apr 2017 08:00:00 EDT

A low interference optical mount assembly that permits the mounting of one or more optics in a stable clamped configuration while minimizing the amount of surface area of the optic obscured by an optic mount of the assembly. Clamp embodiments for such an assembly may include a resilient leaf spring or a rigid clamp plate. In some cases, the mount assembly may be configured in a wheel arrangement that allows the selection of multiple optics by rotating a support frame that supports a plurality of optic mounts.



SURGICAL MICROSCOPE STAND

Thu, 06 Apr 2017 08:00:00 EDT

The invention relates to a surgical microscope stand (100) encompassing: a first carriage (16) that is arranged on a first carrier arm (14) and is drivable by a first drive unit; and a second carriage (18) that is arranged on a second carrier arm (22) and is drivable by a second drive unit. The surgical microscope stand (100) further encompasses an operating region (34) within which at least one operating unit for manual application of control to the first and second drive units is provided.



OPTICAL FILM AND METHOD OF MANUFACTURING THE SAME AND DISPLAY DEVICE INCLUDING THE SAME

Thu, 06 Apr 2017 08:00:00 EDT

An optical film includes a polarizer and a protection film disposed the polarizer and including a polymer having a glass transition temperature of greater than about 100° C., where the polymer is a terpolymer consisting of: a first structural unit derived from styrene or a styrene derivative; a second structural unit derived from maleimide, maleic anhydride, acrylonitrile, a derivative thereof or a combination thereof; and a third structural unit derived from (meth)acrylate or a derivative thereof.



OPTICAL SYSTEM

Thu, 06 Apr 2017 08:00:00 EDT

Optical systems including first and second optical stacks and adapted to provide an adjustable dioptric correction are described. The first optical stack includes a first optical lens and a partial reflector. The second optical stack is convex along orthogonal first and second axes and includes a second optical lens and a reflective polarizer. The reflective polarizer has at least one first location having a radial distance r1 from an optical axis of the second optical stack and a displacement s1 from a plane perpendicular to the optical axis at an apex of the reflective polarizer, where s1/r1 is at least 0.1. A quarter wave retarder is disposed between the second optical stack and the first optical stack.



OPTICAL FILTER AND ELECTRONIC DEVICE INCLUDING THE SAME

Thu, 06 Apr 2017 08:00:00 EDT

A multi-band pass filter may include a filter layer including a plurality of different epsilon-near-zero (ENZ) material layers that are sequentially arranged; and an aperture-defining layer that is disposed on the filter layer and comprises at least one aperture. The filter layer may be exposed to incident light through the at least one aperture, and may be configured to pass a plurality of wavelength regions of the incident light.



HEAD-MOUNTED DISPLAY

Thu, 06 Apr 2017 08:00:00 EDT

A head-mounted display including a first optical system is provided. The first optical system includes an image surface, a stop surface, a first optical stack disposed between the image surface and the stop surface and a second optical stack disposed between the first optical stack and the stop surface. The first optical stack includes a first optical lens and a partial reflector. The second optical stack includes a second optical lens, a multilayer reflective polarizer and a first quarter wave retarder disposed between the multilayer reflective polarizer and the first optical stack. The multilayer reflective polarizer may be convex toward the image surface along orthogonal first and second axes.



OPTICAL ELEMENT AND OPTICAL APPARATUS

Thu, 06 Apr 2017 08:00:00 EDT

An optical element includes an optical surface having a multilayer film. The multilayer film comprises a stack that includes a first film having a first refractive index for a used wavelength and a second film having a second refractive index for the used wavelength smaller than the first refractive index. Outermost layers of the stack are configured by the first films. A film configuration of the stack has symmetry along with a stack direction. The predetermined conditional expressions are satisfied.



GOBO AND METHOD FOR MANUFACTURING A GOBO

Thu, 06 Apr 2017 08:00:00 EDT

A gobo with a substrate having at least one peripheral edge a body extending from the peripheral edge, the body having two faces and a structural network on at least one of the two faces, the structural network generally extending to the peripheral edge. An optical pattern is disposed on or through the body, with the structural network extending on the body only to an edge of the optical pattern. The structural network is integral with the substrate.