Abstract: VHOEs with expanded acceptance angle ranges are described as well as various systems and methods for fabricating VHOEs with expanded acceptance angle ranges. The VHOE with expanded acceptance angle range may include two or more individual Bragg gratings. The two or more individual Bragg gratings have the same diffraction geometry but with shifted Bragg conditions. Having the same diffraction geometry means when light is incident on the VHOE including two or more individual Bragg gratings, the diffracted light from each of the Bragg gratings is co-linear or overlapping with the diffracted light from the other Bragg gratings. The Bragg condition for each of the Bragg gratings are shifted with respect to each neighboring Bragg grating by an amount up to the acceptance angle range of each individual Bragg grating.

Abstract: Disclosed are optical interrogation apparatus that can produce lens-free images using an optoelectronic sensor array to generate a holographic image of sample objects, such as microorganisms in a sample. Also disclosed are methods of detecting and/or identifying microorganisms in a biological sample, such as microorganisms present in low levels. Also disclosed are methods of using systems to detect microorganisms in a biological sample, such as microorganisms present in low levels. In addition or as an alternative, the methods of using systems may identify microorganisms present in a sample and/or determine antimicrobial susceptibility of such microorganisms.

Abstract: A projector arranged to project an image within a display area on a display plane. The image comprises a light feature. A light sensor is spatially separated from the display plane. In an aligned state, light forming the light feature of the image on the display plane is at least partially disposed around the light sensor. In the aligned state, substantially no light forming the light feature impinges on the light sensor. The aligned state defines a selected alignment between the display area and the display plane (i.e. a selected position of the display area on the display plane).

Abstract: Provided is a polarizing sheet that can precisely impart a desired curved shape without causing whitening when bending is carried out. A polarizing sheet of an embodiment of the present invention having a structure in which a polyamide resin film (1), a polarizing film, and a polyamide resin film (2) are laminated in this order, wherein a retardation value of the polyamide resin film (1) is from 10 to 3000 nm, and the retardation value of the polyamide resin film (1) and a retardation value of the polyamide resin film (2) satisfy Formula (r): [Retardation Value of Polyamide Resin Film (1)]?[Retardation Value of Polyamide Resin Film (2)]?10 nm ??(r).

Abstract: A holographic energy system is operable to generate an output wavefront according to a complex amplitude function. The holographic energy system includes a continuous three-dimensional energy medium, an array of energy devices configured to output energy to interact with the continuous three-dimensional energy medium to define a hologram therein, and an electromagnetic (EM) energy source positioned to output coherent EM energy that is incident on the hologram in the continuous three-dimensional energy medium to generate an output wavefront.

Abstract: The disclosure relates to a viewing optic. In one embodiment, the disclosure relates to a viewing optic having an integrated display system. In one embodiment, the disclosure relates to a viewing optic having an integrated display system for generating images that are projected into the first focal plane of an optical system.

Abstract: A tunable filter includes: an optical input/output unit; a first mirror having a first reflective surface disposed to reflect input light from the optical input/output unit; a transmissive diffraction grating disposed on a propagation path of the input light reflected by the first mirror; and a second mirror having a second reflective surface disposed to reflect transmitted diffracted light from the transmissive diffraction grating corresponding to the input light. The first reflective surface is a variable-angle reflective surface. The second reflective surface has a fixed orientation relative to the transmissive diffraction grating.

Abstract: Optical films, such as reflective polarizer films, and optical systems including the optical films are described. An optical system includes one or more optical lenses having at least one curved major surface, a partial reflector, and a reflective polarizer. For a substantially normally incident light in a predetermined wavelength range extending at least from about 450 nm to about 600 nm: the partial reflector has an average optical reflectance of at least 30%, and the reflective polarizer has an average optical reflectance Rs for a first polarization state, an average optical transmittance Tp for an orthogonal second polarization state, and an average optical reflectance Rp for the second polarization state, where Tp?80%, Rp?1%, and 50%?Rs?95%.

Abstract: This optical filter 10 has an L* of at least 20 as measured by the SCE method, wherein the linear transmittance is at least 60% with respect to light the wavelength of which falls at least partially within the wavelength range of 760 nm-2,000 nm, and the temperature, at which the optical filter contracts by being heated, is at least 85° C.

Abstract: This disclosure discloses a radiative cooling optical filter, comprising a substrate. One side of the substrate is polished, and the rough side of the substrate is provided with a metal reflective layer. The polished side of the substrate is subsequently provided with the intermediate layers and a top layer. The intermediate layer comprises alternatingly arranged layers A and layers B. The thickness of each layer A and layer B is 50-400 nm. The material of the layer A is silicon dioxide or aluminum oxide, and the material of the layer B is titanium dioxide, silicon nitride or silicon carbide. The material of the top layer is ytterbium fluoride, yttrium fluoride or zinc sulfide. The intermediate layer and the top layer jointly constitute a multi-resonant absorption enhancer in the atmospheric transparent window.

Abstract: Disclosed is an optical filter with L* measured by the SCE method being 20 or greater, wherein: the linear transmittance with respect to light with wavelengths being at least a portion of a wavelength range from 760 nm to 2000 nm is 60% or greater; and, before and after a light resistance test wherein light of a xenon arc lamp (average integrated illuminance of light with wavelengths from 300 nm to 400 nm:120 W/m2) is shone for 300 hours, the absolute value of a change in C* measured by the SCE method using a spectroscopic colorimeter is 6 or less.

Abstract: An optical element driving mechanism is provided. The optical element driving mechanism is disposed on an electronic apparatus. The optical element driving mechanism includes a first movable portion, a fixed portion, a first driving assembly, a circuit assembly, and a first position sensing assembly. The first movable portion is used for connecting to a first optical element. The first optical element is used for corresponding to light. The first movable portion is movable relative to the fixed portion. The first driving assembly is used for driving the first movable portion to move relative to the fixed portion. The circuit assembly is used for electrically connected to the electronic apparatus. The first position sensing assembly is used for detecting the movement of the first movable portion relative to the fixed portion.

Abstract: The invention provides a wide-aperture spherical primary mirror off-axis afocal optical system, including a primary mirror, a secondary mirror and an aberration compensation mirror group. The primary mirror is a spherical reflector, the secondary mirror are higher-order aspherical reflectors. The primary mirror and the secondary mirror form an off-axis two-mirror system to compress the beam aperture. The aberration compensation mirror group is a coaxial reflective system that is used off-axis. The aberration compensation mirror group has focal power to produce compensation aberrations. The incident beam passes through and is reflected by the primary mirror and secondary mirror sequentially and enters the aberration compensation mirror group thereafter.

Abstract: A voice coil motor device includes a fixed component and a movable component. The movable component holds a lens. The movable component is accommodated in the fixed component. The fixed component includes a housing and a base. The housing defines a first hole and includes first side walls. The base defines a second hole. Centers of the first hole and the second hole are on an optical axis. The movable component is accommodated in the housing. The first hole receives the lens. One end of the movable component is received in the second hole of the base. The first side walls of the housing define a plurality of positioning holes, and the base includes a plurality of positioning posts. Each of the positioning posts is embedded in a corresponding one of the positioning holes.

Abstract: An optical element driving mechanism is provided and includes a fixed assembly, a first movable assembly and a first driving assembly. The first movable assembly is configured to connect a first optical element, and the first movable assembly is movable relative to the fixed assembly. The first driving assembly is configured to drive the first movable assembly to move relative to the fixed assembly in a first dimension.

Abstract: There is provided a compact imaging lens configured to properly correct aberrations. The imaging lens includes, in order from an object side to an image side, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, a third lens L3 with positive refractive power, a fourth lens L4 with positive refractive power, a fifth lens L5, a sixth lens L6, a seventh lens L7 with positive refractive power, and an eighth lens L8 with negative refractive power. The eighth lens L8 is formed in a shape of a meniscus lens in a paraxial region, and has an aspheric image-side surface having at least one inflection point. In addition, the following conditional expressions are satisfied: ?5.00<f2/f<?2.00 10.00<f4/f<25.00 where f: a focal length of the overall optical system of the imaging lens, f2: a focal length of the second lens, and f4: a focal length of the fourth lens.

Abstract: A holographic image display system comprising a processor receiving image data at an input and producing output hologram data based on the image data. The image data comprises three-dimensional image data that is separable into a plurality of two-dimensional image layers at different image planes. The processor is configured to: a) perform a space-frequency transform on each image layer to provide a transformed image layer, b) apply a focus factor to each transformed image layer, c) apply a pseudo-random phase factor to each transformed image layer, and d) sum the transformed image layers to form a holographic sub-frame, e) repeat steps (c) and (d) for a plurality of iterations, applying a different pseudo-random phase factor to the transformed image layers in each iteration to form a plurality of holographic sub-frames; and f) drive a spatial light modulator with the holographic sub-frames in rapid temporal succession to generate a holographic image.

Abstract: A camera optical lens includes, from an object side to an image side: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens, a fourth lens, a fifth lens having a positive refractive power and a sixth lens having a negative refractive power. The camera optical lens satisfies following conditions: 0.25?d10/TTL?0.50 and 0.55?f1/f?1.00, here f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, d10 denotes an on-axis thickness from an image-side surface of the fifth lens to an object-side surface of the sixth lens, and TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis. The camera optical lens has excellent optical performances such as a large aperture, a wide angle and ultra-thin etc..

Abstract: A camera driving module includes: a base including a central opening; a casing disposed on the base and including an opening hole corresponding to the central opening; a lens unit movably disposed on the casing; and a focus driving part. The focus driving part includes a carrier, an AF coil element, at least two permanent magnets and a Hall element. The carrier is disposed on the lens unit and movable in a direction parallel to an optical axis. The AF coil element is fixed to the base and faces toward the carrier. The permanent magnets are fixed on one side of the carrier facing toward the base and disposed opposite to each other about the optical axis. The Hall element faces toward a corresponding surface of one of the permanent magnets. The AF coil element and the corresponding surfaces are arranged in the direction parallel to the optical axis.

Abstract: The present disclosure provides a camera optical lens including, from an object side to an image side in sequence: eight lenses which are, from an object side to an image side in sequence: a first lens having a positive refractive power, a second having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens having a positive refractive power, a sixth lens having a positive refractive power, a seventh lens having a negative refractive power, and an eighth lens having a positive refractive power; and the camera optical lens satisfies conditions of: 0.95?f/TTL; 2.00?f2/f?5.00; and 2.50?(R15+R16)/(R15?R16)?15.00. The camera optical lens can achieve good optical performance while meeting the design requirements for ultra-thinness and long focal length.