Abstract: There is provided an optical encoder including a photodiode array and a code disk opposite to each other. The photodiode array includes at least three sets of position photodiodes and two index photodiodes arranged transversally. The two index photodiodes are adjacently arranged at the same side of the at least three sets of position photodiodes. A first set of position photodiodes and a last set of position photodiodes of the at least three sets of position photodiodes are partially covered to alleviate the total harmonic distortion. The rest position photodiodes of the at least three sets of position photodiodes other than the first and last sets of position photodiodes are not covered.

Abstract: A LIDAR (1) includes at least one light emitting output (11) and at least one light receiving input (12), at least one light source (2) adapted to emit pulsed laser radiation and at least one light detector (3) adapted to receive reflected laser radiation. The light source (2) is coupled to a first port (411) of a duplexer (4), a fourth port (421) of the duplexer (4) is coupled to the light emitting output (11), and a third port (412) of the duplexer (4) is coupled to the light receiving input (12). A second port (422) of the duplexer (4) is coupled to the light detector (3). The LIDAR may be provided to a car or a robot, which employs the device and its method of operation, for optical remote sensing of a target (85).

Abstract: An optical sensor includes a light emitter to emit light, a light receiver to receive the light emitted from the light emitter, a first resin body that covers the light emitter and the light receiver to transmit the light emitted from the light emitter to emit the light outside, and a second resin body that seals the light emitter and the light receiver, in which the second resin body is included inside the first resin body, and the second resin body is harder than the first resin body.

Abstract: A method of determining perturbation of a grating formed in an optical fiber, comprises: modulating and transmitting a light beam through the optical fiber, measuring at least one phase shift in a modulation of light reflected off the grating, and determining the perturbation of the grating based on the phase shift(s).

Abstract: The present disclosure relates to a method and device for detecting ambient light, an electronic device and a storage medium. The electronic device includes: a first screen, the first screen being a foldable flexible screen; multiple light sensors, orientations of light sensing surfaces of the multiple light sensors being different; and at least one processor electronically connected with the first screen and the light sensors respectively and configured to select a target light sensor from the multiple light sensors according to a present state of the first screen and obtain target detection data representing present ambient brightness according to detection data of the target light sensor.

Abstract: An automatic darkening filter with adaptive parameter adjustment includes: a welding arc intensity detection unit configured to provide a first signal for determining the welding arc intensity; a solar power supply module configured to provide electric energy for the welding arc intensity detection unit and provide a second signal for determining the ambient light intensity; and a CPU and a light valve, the CPU being configured to calculate a difference between the welding arc intensity and the ambient light intensity based on the first and second signals, and control the scale number of the light valve based on the difference. The automatic darkening filter can realize the automatic adjustment of the scale number, and in the adjustment process, the welding arc intensity signal can be revised based on the ambient light intensity, which can effectively ensure the accuracy of the final determination of the scale number.

Abstract: A laser radar for a work vehicle includes a light emitter, a light receiver, and a light attenuation layer. The light emitter is configured to emit a laser light. At least part of the laser light is reflected as a reflected light. The light receiver is configured to receive the reflected light. The light attenuation layer is provided to weaken the reflected light such that the light receiver is configured to receive the reflected light which has been weakened via the light attenuation layer.

Abstract: In various embodiments, the present disclosure provides devices and systems for detecting the blood pressure of a user. In one embodiment, an optoelectronic device includes an array of avalanche photodiodes operating in Geiger mode. A tunable optical filter is optically coupled to the array and receives a light beam reflected from a vascularized tissue of the user, in response to the vascularized tissue being illuminated by an optical source.

Abstract: A semiconductor body includes a driver for driving a light source, at least two detectors each including an avalanche diode, a time-to-digital converter arrangement coupled to outputs of the at least two detectors, a memory that is coupled to the time-to-digital converter arrangement and is configured to store at least one histogram, and an evaluation unit coupled to the driver and to the memory.

Abstract: A fingerprint recognition package may include a circuit board; an image sensor die attached and electrically connected to the circuit board; a light-shielding member applied to the circuit board; and an adhesive member attached to one side of the light-shielding member. The light-shielding member can be cured by being irradiated with ultraviolet rays, and can be thermoset by being irradiated with heat.

Abstract: A sealed linear encoder apparatus provides a measure of relative displacement of two relatively movable members. The sealed linear encoder apparatus includes at least one elongate sealing lip wherein at least a sealing portion of the elongate sealing lip is held in tension along its length.

Abstract: A light detection and ranging (LIDAR) includes: a light-emitting unit, a light receiving unit and a control unit. In the light emitting unit, first light from a first light source, after being reflected by a first surface of a first mirror, reaches the scan unit. In the light emitting unit, second light from a second light source, after being reflected by a second mirror and transmitted through the first mirror via a second surface of the first mirror, reaches the scan unit, using an overlapping path with the first light. Light intensity of the second light transmitted through the first mirror is lower than that of the first light reflected by the first mirror. The control unit enables only the first light source, and in response to determining that measurements from the light receiving unit are saturated, automatically switches off the first light source and enable the second light source.

Abstract: Aspects of the present disclosure describe systems methods and structures for avoiding saturation caused phase jump in systems that extract information from the phase of a complex sequence and exhibit an overflow or “spike” in the output of a high-pass filter. Operationally, during phase unwrapping—when an output signal exceeds a supported range—it is adjusted to be back in range by adding N·2?, to a phase where N is negative or positive integer, depending on the direction to be adjusted.

Abstract: An image sensor includes; a photoelectric conversion element disposed on a substrate, a fence structure disposed on the substrate and including a low refractive index layer stacked on a barrier layer, wherein the barrier layer includes at least one metal, and a color filter disposed inwardly lateral with respect to a sidewall of the fence structure, wherein the barrier layer includes an inward lateral protrusion.

Abstract: An electronic device including an optical component and an enclosure comprising a glass ceramic region is disclosed. The optical properties of the glass ceramic region and the positioning of the glass ceramic region with respect to the optical component can affect the performance of the optical component, the visual appearance of the optical component, or both.

Abstract: An optical distance measurement apparatus that measures a distance using a round-trip time of light to an object includes an irradiator, a plurality of SPADs, a plurality of signal output units, a response number detector, a timing identifier, and a timing corrector. The response number detector detects a response number representing the number of responding one of the SPADs based on a pulse signal. The timing identifier identifies a temporary timing based on a state of variation in the response number along a time series and identifies a detection timing representing a timing when the optical distance measurement apparatus detects light in accordance with the temporary timing. The timing corrector acquires a correction time representing a time difference between the temporary timing and a true timing corresponding to a distance to an object and sets a timing corrected from the temporary timing by the correction time as the detection timing.

Abstract: A slope detection device includes a structure provided with a spherical surface, multiple optical sensors provided on a spherical surface of the structure in a manner that face different directions, the optical sensors measuring a quantity of sunlight, an optical sensor receiving unit receiving output information of each of the optical sensors, a time providing unit providing calendar information on a date and a time when the output information is received, and an operation unit configured to analysis an incidence angle of the sunlight from the collected pieces of the output information, calculate a horizontal coordinate system from the analyzed incidence angle of the sunlight, the calendar information, and a sun path equation, and calculate a three-dimensional slope information for a current location in comparison with the horizontal coordinate system.

Abstract: An image sensor is disclosed. The image sensor includes a pixel region and a shield region. The pixel region includes a first microlens array that includes microlenses arranged in a first direction and a second direction perpendicular to the first direction. The shield region surrounds the pixel region and includes a second microlens array formed in a shape that is obtained when the first microlens array is rotated by a predetermined angle with respect to the first direction.

Abstract: A solid-state image capturing element includes a pair of first floating diffusion layers arranged in a direction perpendicular to a predetermined direction and a pair of second floating diffusion layers arranged in the perpendicular direction and adjacent to the pair of first floating diffusion layers in the predetermined direction. The element includes a first connection circuit configured to select at least one of the pair of first floating diffusion layers and to connect the selected first floating diffusion layer to a predetermined first wire; a second connection circuit configured to select at least one of the pair of second floating diffusion layers and to connect the selected second floating diffusion layer to the first wire; and an output circuit configured to output a signal according to an amount of charge of at least one of the pair of first floating diffusion layers or the pair of second floating diffusion layers.

Abstract: An optical device comprises at least one printed circuit board, the printed circuit board includes an electronic image-capture circuit, a lens holder comprising at least one optical lens, the lens holder comprising a wall forming a cavity extending along the optical axis of the device from its top end to its bottom end, the bottom end being mounted on the rigid printed circuit board so as to align, along the optical axis of the device, the electronic image-capture circuit and the optical lens, a flexible heater band arranged in contact with the wall of the lens holder and around the wall of the lens holder, the heater band comprising an electrical connection interface electrically connected to at least one rigid printed circuit board of the optical device.