Abstract: Disclosed are a temperature control method of an optical modulator and an apparatus therefore. The temperature control apparatus of an optical modulator according to an exemplary embodiment of the present disclosure is to provide a temperature control method of an optical modulator which performs a calibration mode to select a heater control voltage with a maximum optical modulation amplitude (OMA) while adjusting a heater control voltage which drives a heater of the optical modulator, stores a reference temperature measurement code based on a measured temperature value of the optical modulator while driving the heater at a selected heater control voltage, and performs a lock mode which controls a temperature of the optical modulator by changing the heater control voltage using the reference temperature measurement code after stopping the optical modulation amplitude detecting operation and an apparatus therefor.

Abstract: Multiple collimated laser beams can be arranged in a tightly packed non-overlapping array the goes through a telescope system to reduce the size of the beams and also the separation between the beam centers. The beams in the resulting smaller array then diverge until they reach a nonlinear lens, which collimates each of the beams individually so that all of the beams are collimated, pointing in the same direction and overlapping. The pulses in the beams are temporally separated from each other such that the nonlinear lens acts as a different lens for each of the beams. Such an arrangement facilitates scaling the far field average intensity by combining multiple temporally interleaved pulsed laser beams, allowing diverging pulsed laser beams to be collimated individually by utilizing the large nonlinear refractive index of certain materials.

Abstract: The present invention belongs to the field of electronic display technology, and relates to a display plasma module with a patterned structure, including a pixel electrode and a transparent electrode located above the pixel electrode, characterized in that a display plasma is provided between the pixel electrode and the transparent electrode. A spacer frame is located around the display plasma. A plasma barrier array for uniformly dispersing and stabilizing the display plasma is provided on the pixel electrode and/or the transparent electrode. The plasma barrier array includes a plurality of plasma barrier frames distributed in an array. The display plasma module of the present invention replaces the existing micro-cup structure or microcapsule with the display plasma, and the plasma barrier array for uniformly dispersing and stabilizing the display plasma is provided in the display plasma.

Abstract: A freeform surface off-axial three-mirror imaging system is provided. The freeform surface off-axial three-mirror imaging system comprises a primary mirror, a secondary mirror, and a compensating mirror. The primary mirror, the secondary mirror, and the compensating mirror are located adjacent and spaced away from each other. A surface shape of each of the primary mirror and the secondary mirror is a quadric surface. The primary mirror is used as an aperture stop. A surface shape of the compensating mirror is a freeform surface. A light emitted from a light source is reflected by the primary mirror, the secondary mirror, and the compensating mirror to form an image on an image plane.

Abstract: A method is provided for operating one or more one solid-state electro-optic device to provide an electrically switching shutter. The method includes forming an alternating stack of first semiconductor layers having a first dopant and second semiconductor layers having a second dopant to form at least one superlattice semiconductor device. The method further includes applying to the at least one superlattice semiconductor device a first voltage to induce a transparent state of the alternating stack such that light is transmitted through the alternating stack, and applying to the at least one superlattice semiconductor device a second voltage different from the first voltage to induce an opaque state of the alternating stack such that light is inhibited from passing through the alternating stack.

Abstract: An optical apparatus includes a pair of first driving force generators that generates a driving force to the movable member in a first direction orthogonal to optical axes of a pair of objective optical systems, and a second driving force generator that generates a driving force to the movable member in a second direction orthogonal to the optical axes of the pair of objective optical systems and the first direction. The pair of first driving force generators are provided between a first line segment passing through the optical axes of the pair of objective optical systems and a second line segment passing through the optical axes of the pair of eyepiece optical systems or on at least one line segment of the first line segment and the second line segment. The second driving force generator is provided between the pair of image stabilization optical systems.

Abstract: An optical system includes an incident part, a first reflective surface, a second reflective surface, a third reflective surface, and an exit part. The incident part is rotationally symmetric around a central axis. Incident light from the incident part intersects the central axis and enters the first reflective surface. Reflected light from the first reflective surface intersects the central axis and enters the second reflective surface. Reflected light from the second reflective surface enters the third reflective surface.

Abstract: Provided is a disassembly and assembly structure of a glasses side cover, including a pair of glasses and at least one side cover. The glasses have a frame and two temples. At least one temple is provided with a chute with an opening adjacent to the pivot portion. The chute forms a first end and a second end along the length direction, and an end of the opening adjacent to the first end is provided with a resisting portion. The at least one side cover has a guide seat and a first plate arranged below the guide seat. The guide seat detachably straddles an outer edge of the opening, and is provided with an operating member received in the chute. The front end of the operating member is provided with a positioning block. When the operating member slides to the first end, the positioning block is embedded between the first end and the resisting portion to be fixed according to the elasticity of the material.

Abstract: Magnetic Bluetooth eyeglasses are revealed. A Bluetooth circuit module is mounted in a mounting space of a temple and provided with a built-in Bluetooth unit connected to mobile devices. The Bluetooth circuit module further includes a microphone, a speaker, a touch switch, and a power connection base. The temple is connected to a power supply device by magnetic attraction between first and second magnetic members while the power supply device is in contact with the power connection base of the Bluetooth circuit module. Thereby users are not bothered by wires while in use and the eyeglasses are more convenient to use. Moreover, the eyeglasses can still be used during charging process. Users only need to replace the power supply device with a new one already charged instead of taking off the whole eyeglasses. The eyeglasses which prevent moisture infiltration provide longer service life.

Abstract: A lens unit is provided, including a casing, a carrier, an optical lens, a first driving assembly, and a second driving assembly. The carrier is movably disposed in the casing, and the optical lens is disposed on the carrier. The first and second driving assemblies are provided to drive the carrier and the optical lens respectively to move along a first axis and a second axis relative to the casing. Specifically, when viewed along a direction perpendicular to an optical axis of the lens unit, the first and second driving assemblies do not overlap.

Abstract: In some arrangements, product packaging is digitally watermarked over most of its extent to facilitate high-throughput item identification at retail checkouts. Imagery captured by conventional or plenoptic cameras can be processed (e.g., by GPUs) to derive several different perspective-transformed views—further minimizing the need to manually reposition items for identification. Crinkles and other deformations in product packaging can be optically sensed, allowing such surfaces to be virtually flattened to aid identification. Piles of items can be 3D-modelled and virtually segmented into geometric primitives to aid identification, and to discover locations of obscured items. Other data (e.g., including data from sensors in aisles, shelves and carts, and gaze tracking for clues about visual saliency) can be used in assessing identification hypotheses about an item. Logos may be identified and used—or ignored—in product identification. A great variety of other features and arrangements are also detailed.

Abstract: An adapter optical system, which is an optical system configured to guide reflection light reflected by an object and passing through an imaging lens to a liquid resonant lens, includes: a first lens unit removably disposed at a position where the reflection light passing through the imaging lens enters and constituting an image-side telecentric optical system; and a second lens unit disposed at a position where the reflection light passing through the first lens unit enters and constituting a finite correction optical system in combination with the liquid resonant lens.

Abstract: A modular binocular night vision device permits vision during low-light conditions by converting incoming near-infrared and visible light from a viewed scene to an intensified visible light image. The modular binocular night vision device comprises a pair of monocular housings, connected to one another by way of a bridge, that are arranged for respectively covering the right and left eye of an observer. Each monocular housing contains an identical optical system. An example modular binocular night vision device comprises the bridge and a mount module used to attach the modular binocular night vision device to a helmet. The bridge includes a mechanical connection port on a top side thereof. The mount module includes a base and an onboard power source. The base is removeably attachable to the mechanical connection port on the bridge and the onboard power source is adapted to provide power to the binocular night vision device.

Abstract: A mirror driving mechanism includes a plate-shaped base portion, a mirror that is installed at the base portion, and a temperature detecting section that is installed at the base portion and that detects a temperature of the base portion. The base portion includes a thin portion that is disposed away from an outer edge of the base portion and that has a through hole extending through the base portion in a plate-thickness direction of the base portion, a thick portion that is connected to the thin portion, that is thicker than the thin portion in the plate-thickness direction of the base portion, and that extends along the outer edge so as to surround the thin portion, and a first shaft portion extends into the through hole from an outer periphery of the through hole.

Abstract: Beamformers are formed (e.g., carved) from a stack of transparent sheets. A rear face of each sheet has a reflective coating. The reflectivities of the coatings vary monotonically with sheet position within the stack. The sheets are tilted relative to the intended direction of an input beam and then bonded to form the stack. The carving can include dicing the stack to yield stacklets, and polishing the stacklets to form beamformers. Each beamformer is thus a stack of beamsplitters, including a front beamsplitter in the form of a triangular or trapezoidal prism, and one or more beamsplitters in the form of rhomboid prisms. In use, a beamformer forms an output beam from an input beam. More specifically, the beamformer splits an input beam into plural output beam components that collectively constitute an output beam that differs in cross section from the input beam.

Abstract: An apparatus including an optical resonator, and a method of using same. The optical limiter includes an optically absorbent material. The optical resonator supports a plurality of resonant transmission peaks at resonant frequencies defined by the cavity length. The optically absorbent material exhibits a saturable absorption response at a fundamental absorption peak located spectrally at a fundamental absorption peak frequency of the plurality of resonant transmission peaks. The optically absorbent material includes an absorptivity sufficient for strong cavity coupling, such that the fundamental absorption peak splits into a first upper vibration polariton transmission peak and a second lower polariton transmission peak separated by a Rabi splitting. The Rabi splitting is proportional to a square root of the absorptivity. The absorptivity varies with optical excitation of the optically absorbent material.

Abstract: A system and method of providing a deformed FAC Lens to a multi-emitter diode bar laser system comprised of a lens holder and FAC lens wherein the FAC Lens is deformed so as to offset or compensate for the inherent smile properties present in a multi-emitter diode bar.

Abstract: An optical assembly includes at least one substrate that provides a first curved surface and a second surface. The optical assembly also includes a beam splitter on the first curved surface, a reflector on the second surface, and an optical retarder disposed between the beam splitter and the reflector. The optical assembly is configured to receive first light at the first curved surface and reflect the first light at the reflector and subsequently, at the beam splitter before outputting the first light from the reflector. The first light is transmitted through the optical assembly at a first optical power. The optical assembly is also configured to transmit second light at a second optical power that is less than the first optical power. The second light is transmitted through peripheral portions of the beam splitter and reflector without reflection at the reflector.

Abstract: An optical imaging lens includes a first, a second, a third, a fourth, a fifth, and a sixth lens elements from an object side to an image side arranged in order along an optical axis. The six lens elements are the only lens elements having refracting power in the optical imaging lens. An optical axis region of an object-side surface of the third lens element is concave. A periphery region of an image-side surface of the fourth lens element is concave. An optical axis region of an image-side surface of the sixth lens element is concave.

Abstract: An optical assembly includes at least one substrate that provides a first curved surface and a second surface. The optical assembly also includes a beam splitter on the first curved surface, a reflector on the second surface, and an optical retarder disposed between the beam splitter and the reflector. The optical assembly is configured to transmit the first light through the optical assembly at a first optical power. The optical assembly is also configured to transmit second light through peripheral portions of the optical assembly at a second optical power that is less than the first optical power. The first light includes light having a first polarization and wavelengths within a predetermined wavelength range. The second light includes light having wavelengths within the predetermined wavelength range and a second polarization orthogonal to the first polarization, as well as light having wavelengths outside the predetermined wavelength range.