Abstract: A photonic structure includes a guiding region, a sensing region, and logic region. The guiding region has a first side and a second side opposite to the first side. The sensing region is disposed on the second side of the guiding region. The logic region is disposed on a side of the sensing region opposite to the guiding region. The guiding region, the sensing region, and the logic region are stacked along a vertical direction. A method for manufacturing the photonic structure is also provided.

Abstract: A photonic integrated circuit (PIC) device has photonic devices arranged in an array with respect to control and common conductors. Each of the photonic devices has a photonic component (e.g., photodiode, thermo-optic phase shifter, etc.) and a switching diode connected in series with one another between a control connection and a common connection. The photonic component has at least one optical port, which can be coupled to a waveguide in the PIC device. The switching diode is configured to switch between reverse and forward bias in response to the electrical signals. In this way, control circuitry for providing control and monitoring signals to the conductors can be greatly simplified, and the PIC device can be more compact.

Abstract: An object of the present invention is to ensure low crosstalk for all multi-core optical fibers in an optical fiber cable having a plurality of identical multi-core optical fibers of non-coupling type in different spiral shapes. An optical fiber cable according to the present disclosure is an optical fiber cable formed by twisting a plurality of units each of which is formed by bundling a plurality of identical multi-core optical fibers of non-coupling type, which includes: that all the units have the same diameter; that the units are arranged in a plurality of layers from a center in a cross section; that the units are arranged in a spiral shape for each of the layers in a longitudinal direction; that all the units included in one of the layers have the same twist pitch of the spiral shape; and that the twist pitch is different for each layer, and is set based on a curvature Rpk of the multi-core optical fiber where crosstalk is the largest.

Abstract: The present disclosure relates to a telecommunications distribution hub having a cabinet that defines a primary compartment. The cabinet also includes one or more main doors for accessing the primary compartment. Telecommunications equipment is mounted within the primary compartment. The distribution hub further includes a secondary compartment that can be accessed from an exterior of the cabinet without accessing the primary compartment. A grounding interface is accessible from within the secondary compartment.

Abstract: A data communication apparatus includes a chassis. The chassis includes a front access side, a rear side, a rear wall disposed at the rear side, and a shelf extending at the rear side away from the front access side. A breakout module has a front end opposite a back end and is removeably disposable at least partially in the chassis. The breakout module includes a first adaptor disposed at the front end and a second adapter disposed in the back end. A cable module is removeably disposable on the surface of the shelf such that the cable module is not disposed in the chassis, the cable module including a spool configured to hold a fiber optic cable.

Abstract: A fiber optic cassette may include a cable portion including an arrangement of optical fibers and a substrate portion configured to support the arrangement of optical fibers, and a body portion configured to receive the cable portion. The optical fibers may each include a first fiber end portion that is configured to stand free of the substrate and a second fiber end portion that is configured to stand free of a second end of the substrate opposite the first substrate end. The first fiber end portion may be configured to be at least partially covered by a protective portion and the second fiber end portion may be configured to be at least partially covered by a cover portion.

Abstract: A chassis defines one or more chambers within the interior. Each chamber includes guides along which one or more cassettes can be mounted. Some chambers are configured to receive cassettes in a row. Other chambers are configured to receive cassettes in a column. The cassettes slide along and latch to the guides. The cassettes carry forward port members configured to receive one or more plug connectors, such as SN plugs, duplex LC plugs, MPO plugs, at mounting positions forward of the main bodies of the cassettes.

Abstract: An optical assembly may include an optical element comprising a first surface. An optical assembly may include a mount comprising a first surface. An optical assembly may include a first transmissive layer. An optical assembly may include a first adhesive layer disposed between a first surface of the first transmissive layer and the first surface of the optical element. An optical assembly may include a second adhesive layer disposed between a second surface of the first transmissive layer and the first surface of the mount, wherein the first transmissive layer is configured to transmit illumination to the first adhesive layer and the second adhesive layer to cure the first adhesive layer and the second adhesive layer.

Abstract: A spacer is provided. The spacer includes an opening through which light passes and an internal surface that forms the opening, wherein the internal surface includes a first internal surface having a first curvature portion having a first predetermined curvature and a second internal surface disposed to face the first internal surface in a first direction, perpendicular to an optical axis direction, and having a second curvature portion having a second predetermined curvature, a distance between the first internal surface and the second internal surface is less than a distance between surfaces facing each other in the second direction, intersecting the first direction, and the first curvature portion and the second curvature portion are provided as a pair, corresponding to each other, to form an arc of a circle inscribed on the first internal surface and the second internal surface.

Abstract: An imaging lens system includes a plastic lens element. The plastic lens element includes an optical effective portion and an outer ring portion. The optical axis passes through the optical effective portion. The outer ring portion surrounds the optical effective portion and includes an annular groove structure, a conical surface, a flat abutting portion and a full-circle connecting portion. The annular groove structure is tapered off. Each of the conical surface and the flat abutting portion is located closer to the optical effective portion than the annular groove structure. The flat abutting portion is in physical contact with an optical element. The full-circle connecting portion is connected to the annular groove structure and located farther away from the optical effective portion than the annular groove structure. The annular groove structure has an annular bottom end surface extending in a direction substantially perpendicular to the optical axis.

Abstract: A lens driving apparatus is provided. The lens driving apparatus includes a first frame which accommodates a lens; a driver, connected to the first frame, and configured to generate a driving force to move the first frame in a first direction; and a group of rolling members that include at least one multi-layered rolling member including two or more different materials, wherein the group of rolling members at least partially contacts the first frame.

Abstract: An aperture unit having an optical axis is provided, which includes a fixed portion having a first surface and including a protrusion formed on the first surface, a guiding element movably connected to the fixed portion and including a through hole, a first blade movably connected to the guiding element and the fixed portion, and a driving assembly use for driving the guiding element to move for moving the first blade. The optical axis passes through the through hole. The first surface has a first accommodating space having a recessed structure to accommodate the guiding element, and the protrusion extends toward the first blade.

Abstract: An optical system is provided, which includes a holder used for connecting an aperture unit, a bottom, a second driving assembly used for driving the holder to move, an upper spring disposed on the holder, and an aperture unit disposed on the holder and comprising a third driving assembly used for controlling a size of an aperture opening. The holder is movable relative to the bottom. The third driving assembly is electrically connected to the upper spring.

Abstract: An aperture unit having an optical axis is provided, which includes a fixed portion comprising a sidewall, a guiding element movably connected to the fixed portion, a first blade movably connected to the guiding element and the fixed portion, and a sliding element. The sidewall has a recessed portion having a recessed structure. The sliding element is at least partially accommodated in the recessed portion, and the guiding element is movable relative to the fixed portion through the sliding element.

Abstract: An aperture unit having an optical axis is provided, which includes a fixed portion having a first surface and an opening, a guiding element movably connected to the fixed portion and accommodated in the first accommodating space, a first blade movably connected to the guiding element and the fixed portion, and a driving assembly used for driving the guiding element to move for moving the first blade. A first accommodating space having a recessed structure is formed on the first surface. The opening is formed in the first accommodating space and has a recessed structure. The driving assembly is at least partially disposed in the opening.

Abstract: An aperture unit having an optical axis is provided, which includes a fixed portion having a positioning recess, a guiding element movably connected to the fixed portion and accommodated in the first accommodating space, a first blade movably connected to the guiding element and the fixed portion, and a driving assembly used for driving the guiding element to move for moving the first blade. The positioning recess corresponds to the guiding element and is used for limiting a movable range of the guiding element.

Abstract: An aperture unit having an optical axis is provided, which includes a fixed portion, a guiding element movably connected to the fixed portion, a first blade movably connected to the guiding element and the fixed portion, a driving assembly used for driving the guiding element to move for moving the first blade, a circuit assembly electrically connected to the driving assembly, and a bottom plate disposed on the circuit assembly and including metal.

Abstract: An adjustment image of a projected image is captured by a disparity image sensor. A first defocus factor in generated response to comparing the adjustment image with a reference image driven onto a display projector assembly the generated the projected image. A second defocus factor is generated in response to an alignment of a first intensity profile of the adjustment image and a second intensity profile of the adjustment image. A focusing lens of the display projector assembly is adjusted in response to at least one of the first defocus factor and the second defocus factor.

Abstract: An optical element drive mechanism is provided. The optical element drive mechanism includes an immovable part, a movable part, and a drive assembly. The movable part is connected to an optical element that includes an optical axis. The movable part is movable relative to the immovable part. The drive assembly drives the movable part to move relative to the immovable part.

Abstract: A lens moving apparatus can include a cover member including first and second side plates, a bobbin disposed in the cover, a driving magnet including a first magnet disposed between the first side plate and the first side portion of the bobbin and a second magnet disposed between the second side plate and the second side portion of the bobbin, a driving coil disposed on the bobbin and including a first coil disposed on the first side portion of the bobbin and a second coil disposed on the second side portion of the bobbin, a lower elastic member coupled to a lower portion of the bobbin, and a circuit board. Additionally, the first coil can be electrically connected to the first elastic unit and the second coil is electrically connected to the second elastic unit.

Abstract: A lens apparatus includes an optical system including an optical member configured to widen or narrow an in-focus range by moving the optical member, and a processor configured to determine a relationship between a moving direction of the optical member and widening or narrowing of the in-focus range, and to set information regarding a movement of the optical member using a determination result.

Abstract: The head-mounted display device includes an IPD adjustment mechanism and two optical display modules, and the IPD adjustment mechanism is configured to drive the two optical display modules to move. The inter pupillary distance adjustment method includes: after a user wears the head-mounted display device, controlling the IPD adjustment mechanism to move by a first distance in a first direction, where the first distance is used to eliminate a backlash error of the IPD adjustment mechanism; and controlling the IPD adjustment mechanism to operate and move by a second distance in a second direction, where the IPD adjustment mechanism drives the two optical display modules to move, and a distance between the two optical display modules after the movement matches an inter pupillary distance of the user.

Abstract: An optical imaging system includes a first lens group, a reflective member, and a second lens group sequentially arranged along an optical axis. Each of the first lens group and the second lens group includes a plurality of lenses. The first lens group has positive refractive power. An effective diameter of a first lens, among the plurality of lenses in the first lens group, is largest among the plurality of lenses in the first and second lens groups, and 0<DL1P/TTL<0.25 is satisfied, where DL1P is a distance, on the optical axis, from an object-side surface of the first lens in the first lens group to a first surface of the reflective member, and TTL is a distance, on the optical axis, from the object-side surface of the first lens in the first lens group to an imaging surface.

Abstract: An optical system and a head mounted display are disclosed. The optical system comprises: a third lens, a second lens and a first lens arranged successively along a propagation direction of incident light. The effective focal length f1 of the first lens and the effective focal length f2 of the second lens are both greater than the effective focal length f of the optical system. The present disclosure provides a solution of a direct transmission optical structure, with short-focus, high light efficiency and high-resolution which has a good imaging quality.

Abstract: An imaging lens system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens disposed in order from an object side, and a stop disposed on an image side of one of the first to sixth lenses, and one or more of the second to seventh lenses, disposed on an image side of the stop, each has a positive refractive power and a negative refractive index temperature coefficient.

Abstract: A low thermal-drift optical lens includes a first lens group, a second lens group and an aperture stop. The first lens group includes a first lens and a second lens, and the second lens group includes a third lens and a cemented lens. The aperture stop is disposed between the second lens and the cemented lens, and a lens with a refractive power of the low thermal-drift optical lens closest to the minified side has at least one inflection point. In an operating temperature range of ?40° C. to 80° C., a thermal drift of the low thermal-drift optical lens relative to a focal plane at 25° C. is less than or equal to 10 um.

Abstract: An optical system and a head mounted display are disclosed. The optical system comprises: a lens group comprising a third lens, a second lens and a first lens arranged successively along a propagation direction of incident light. In the lens group, there are two Fresnel surfaces arranged adjacent to each other. The optical system has an imaging spot size less than 50 ?m. The present disclosure provides a solution of short-focus, high-resolution, direct transmission optical structure, which can be applied to the head mounted display and has a good imaging effect.

Abstract: The imaging lens includes, successively in order from a position closest to an object side to an image side: a first lens group; and a second lens group that has a positive refractive power. During focusing, only the second lens group moves. A lens closest to the image side in the second lens group is a negative meniscus lens having a surface convex toward the object side. Assuming that a paraxial radius of curvature of an object side surface of the negative meniscus lens closest to the image side in the second lens group is rF, and a maximum image height is Y, the imaging lens satisfies Conditional Expression (1), which is represented by 0.5<rF/Y<3 (1).

Abstract: A optical module according to an embodiment includes a sensor and an optical system including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged sequentially along the optical axis in the direction from the object side to the sensor side, at least one of the object side surface or the sensor side surface of the fourth lens includes a freeform surface.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens having negative refractive power, a fourth lens, a fifth lens, and a sixth lens, disposed in order from an object side. The optical imaging system has a field of view of 120 degrees or greater, and a distortion aberration at a highest height of an imaging plane is +30% or greater or ?30% or lower.

Abstract: An imaging lens system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed from an object side. The system satisfies TTL/f<1.0 and D23/D34<1.2, where TTL is a distance from an object-side surface of the first lens to an imaging plane, f is a focal length of the imaging lens system, D23 is a distance from an image-side surface of the second lens to an object-side surface of the third lens, and D34 is a distance from an image-side surface of the third lens to an object-side surface of the fourth lens.

Abstract: An optical system and a head mounted display are disclosed. The optical system comprises: a third lens, a second lens and a first lens glued successively along a propagation direction of incident light. Two glued surfaces of the first lens and the second lens are both Fresnel surfaces. The present disclosure provides a solution of short-focus, high light efficiency, high-resolution, direct transmission optical structure, in which the design of gluing three optical lenses also facilitates reducing stray light.

Abstract: An optical system includes, in order from an object side to an image side, a front group, an aperture stop, and a rear group, wherein the front group includes a first lens, a second lens, and a third lens disposed in order from the object side to the image side, wherein an object side surface of the second lens is an aspheric surface having an inflection point in a cross section including an optical axis, wherein an image side surface of the second lens is a concave surface, wherein a first antireflection film is disposed on at least one of the image side surface of the second lens and an object side surface of the third lens, and wherein the predetermined inequality is satisfied.

Abstract: A zoom optical system comprises, in order from an object: a front lens group (GFS) having a positive refractive power; an M1 lens group (GM1) having a negative refractive power; an M2 lens group (GM2) having a positive refractive power; and an RN lens group (GRN) having a negative refractive power, wherein upon zooming, distances between the front lens group and the M1 lens group, between the M1 lens group and the M2 lens group, and between the M2 lens group and the RN lens group change, upon focusing from an infinite distant object to a short distant object, the RN lens group moves, and the M2 lens group comprises an A lens group that satisfies a following conditional expression, 1.10<fvr/fTM2<2.00, where, fvr: a focal length of the A lens group, and fTM2: a focal length of the M2 lens group in a telephoto end state.

Abstract: A light-emitting device including: a light-emitting element; and a lens joined to the light-emitting element, wherein the light-emitting element has a rectangular light emission surface facing the lens, wherein the lens includes: an opposing surface facing the light-emitting element; and a convex surface oriented in an opposite direction to the opposing surface, and wherein as seen in a direction perpendicular to the light emission surface, a circumferential edge of the convex surface is circular, and, when a distance between a center of the convex surface and a center of the light emission surface is denoted by ? (unit: ?m); a length of a shortest edge of the light emission surface is denoted by L (unit: mm); a diameter of the circumferential edge of the convex surface is denoted by R (unit: mm); and R/L is denoted as r; formula (1): 0 < ? ? 450 / r ( 1 ) is satisfied.

Abstract: A single-particle localization microscope includes a light source configured to generate illumination light for illuminating a sample region, and an optical illumination system configured to shape the illumination light into a localizing light distribution having a substantially zero intensity minimum at a target point within the sample region. The localizing light distribution is adapted to cause a single particle in a fluorescent state located in the sample region outside the intensity minimum to emit fluorescent light. The optical illumination system is further configured to shape the illumination light into an auxiliary light distribution having a non-zero intensity at the target point such that the auxiliary light distribution is defined in a spatial extent and/or in its shape by the localizing light distribution.

Abstract: Aligning apparatuses with a set of guides that form at least one imaging region are provided. The guides contain edges for aligning an object to be imaged, where the object is placed in the imaging region. The aligning apparatuses may comprise multiple imaging regions for imaging multiple objects and may also comprise a guard member and a color check guide member. In some examples, the aligning apparatus may be used with a scanner that captures images of the objects and with a computer program for processing the images.

Abstract: A binocular telescope comprises a main housing, a first lens body and a second lens body which are rotatably mounted in the main housing, and a laser ranging component accommodated in the main housing, the laser ranging component comprising a base mounted in the main housing, a laser transmitting module and a laser receiving module which are mounted in the base, the laser ranging component being provided in front of the first lens body and the second lens body, so that a laser light path for range finding is separated from an observing light path of the first lens body and the second lens body, and the laser light path is independently provided in front of the observing light path.

Abstract: A solid-state photodetector is disclosed, which may comprise an integrated circuit comprising at least one light sensitive photodiode configured to generate output signal indicative of light impinging on the light sensitive photodiode; at least one heating resistor configured to heat the solid-state photodetector when an electric current passes through the at least one heating resistor; and a circuitry for transmitting the electric current of an electric current source to the at least one heating resistor.

Abstract: An optical apparatus includes a mirror configured to irradiate light onto a target and to guide reflected light from the target, a first motor configured to rotate the mirror about a first axis, a second motor configured to rotate the mirror about a second axis, and a processor configured to control the first motor and the second motor. An intersection of the first axis and a reflective surface of the mirror is located at a position different from the second axis. A reflection optical axis surface including a reflection optical axis as an optical axis of the reflected light passing through the intersection of the reflective surface is not parallel to a plane including the second axis.

Abstract: A two-dimensional scanning micromirror device includes a base, a first platform coupled to the base by first support flexures, and a second platform including a reflector and coupled to the first platform by second support flexures. The first platform is oscillatable about a first axis and the second platform is oscillatable about a second axis orthogonal to the first axis. The first platform, the second platform, and the second support flexures together exhibit a first resonance having a first frequency, the first resonance corresponds to oscillatory motion of at least the first platform, the second platform, and the second support flexures about the first axis. The first platform, the second platform, and the second support flexures together exhibit a second resonance having a second frequency, and the second resonance corresponds to oscillatory motion of at least the second platform about the second axis.

Abstract: To provide an optical apparatus and a method of preventing contamination of the optical apparatus that can more effectively prevent contamination. An optical apparatus according to an embodiment includes a light source configured to generate irradiation light including EUV light, an optical system chamber in which a target object to be irradiated with the irradiation light is disposed, a drop-in mirror provided in the optical system chamber in order to guide the irradiation light, an introducing unit configured to introduce argon into the optical system chamber, a power supply configured to apply a negative voltage to the drop-in mirror in the optical system chamber, an ammeter configured to measure an ion current flowing to the drop-in mirror, and a control unit configured to control an introduction amount of the argon according to a measurement result of the ammeter.

Abstract: An imaging unit includes an outermost layer lens, a housing, a vibrator, a piezoelectric element, an inner layer lens, a fixing portion, an imaging element, an imaging control substrate, and a case. The vibrator vibrates the outermost layer lens held by the housing. The piezoelectric element is provided on at least one surface of the vibrator. The case is joined to the housing and houses at least the imaging element and the imaging control substrate. Wiring electrically connected to the piezoelectric element extends from an inside of the housing so as to pass a plane including a mounting surface of the imaging control substrate on which the imaging element is mounted.

Abstract: In example embodiments. a waveguide apparatus is provided that may be used in a display device. The waveguide includes an in-coupler, an out-coupler, and at least a first eye-pupil expander along a first optical path from the in-coupler to the out-coupler. The in-coupler comprises a first diffraction grating and a second diffraction grating overlaying the first diffraction grating. wherein grating lines of the first and second diffraction gratings are parallel to one another. The first eye-pupil expander comprises a third diffraction grating and a fourth diffraction grating overlaying the third diffraction grating. The out-coupler comprises a fifth diffraction grating and a sixth diffraction grating overlaying the fifth diffraction grating.

Abstract: A display device includes a transparent display and having a first display region capable of outputting a video of a first shape, and a variable light transmittance sheet which corresponds to at least the first display region, is disposed on at least a front seat side of the vehicle body, and has a variable light transmittance. When outputting a video including a second display region having a second shape in the first display region, the variable light transmittance sheet is set to include a light-shielding region having a third shape and having a first light transmittance, and a transmission region having a fourth shape other than the light-shielding region and having a second light transmittance larger than the first light transmittance, and at least a part of the light-shielding region is set to overlap with the second display region.

Abstract: A head-up display system for a vehicle is provided. The vehicle has a windshield, a vehicle front and a vehicle rear. The head-up display system includes a first image generation device and an optical element. The first image generation device is configured to provide a first light. The optical element is configured to adjust a transmission direction of the first light. The vehicle front and the vehicle rear are connected along a first direction. Along a second direction perpendicular to the first direction, a first headlight and a second headlight are configured along the second direction and at the vehicle front. A minimum distance between the first headlight and a driver seat is less than a minimum distance between the second headlight and the driver seat. A distance between the first image generation device and the second headlight is different from a distance between the first image generation device and the first headlight.

Abstract: A main controller of an HUD is configured to: acquire road surface information of a front road surface based on a plurality of measurement points on the front road surface, which is detected by a road surface detection sensor mounted on a vehicle with the HUD and is positioned forward of a traveling direction of the vehicle; calculate, by using the road surface information, a virtual image plane position on a virtual image plane where a virtual image of a display object is displayed, which is a display position of the virtual image for displaying the virtual image along the front road surface; and calculate a display position of a display surface within an image display device, which corresponds to the virtual image plane position, so as to output, to the image display device, a control signal for displaying the display object on the display position of the display surface.

Abstract: A head up display for a vehicle includes a holographic projector adapted to project a holographic image, a controller adapted to split a holographic image into a first half image and a second half image and calculate phase holograms for each, a phase light modulator adapted to sequentially and alternately receive and encode the first half image and the second half image, a digital light processor adapted to sequentially and alternately receive the first half image and second half image, sequentially direct the first half image to a first position on a windshield, and direct the second half image to a second position on the windshield, adjacent to the first position.

Abstract: Systems and apparatus for managing stray light in augmented reality, mixed reality, enhanced reality, and similar applications.

Abstract: Methods and apparatuses for applying anti-reflective structures to a waveguide of an augmented reality display device include producing two initial molds: one formed with high precision for diffractive optical structures, and one formed with lower precision for anti-reflective structures. The two initial molds are imprinted into a single resist layer to form an integrated mold, which is then usable to simultaneously form both diffractive optical structures and anti-reflective structures. Accordingly, the cost of producing the anti-reflective structures is minimized while the efficiency of forming the diffractive optical structures and anti-reflective structures is maximized.