Abstract: The present invention relates to a method for synchronizing the optical units of a photoelectric barrier and to such a photoelectric barrier. The synchronization method comprises the steps of transmitting radiation forming a synchronization signal from a first optical sender of the first optical unit; controlling a plurality of the optical receivers of the at least one second optical unit to monitor whether the synchronization signal has been received and performing a synchronization step if the synchronization signal has been received. The method further performs the step of defining at least one of said plurality of optoelectronic components to be used for the synchronization step.

Abstract: A field effect transistor photodetector that can operate in room temperature includes a source electrode, a drain electrode, a channel to allow an electric current to flow between the drain and source electrodes, and a gate electrode to receive a bias voltage for controlling the current in the channel. The photodetector includes a light-absorbing material that absorbs light and traps electric charges. The light-absorbing material is configured to generate one or more charges upon absorbing light having a wavelength within a specified range and to hold the one or more charges. The one or more charges held in the light-absorbing material reduces the current flowing through the channel.

Abstract: An image sensing apparatus sensing a user input and an operating method of the image sensing apparatus are disclosed, in which the image sensing apparatus may include an optical source operating based on a burst mode including a turn-on cycle and a turn-off cycle, and an image sensor configured to receive a reflected light using a pixel array and output sensing data of a position of an object in a target area in the reflected light.

Abstract: A scale (20) has a plurality of patterns so as to spatially modulate an energy distribution, and the scale includes a first pattern having a first modulation period in a moving direction, and a second pattern having a second modulation period different from the first modulation period in the moving direction, a relative phase between the first pattern and the second pattern changes in accordance with a direction perpendicular to the moving direction, each of the first pattern and the second pattern is configured by including a reflective portion (26) that reflects light and a non-reflective portion (25) that does not reflect the light, and a width of the reflective portion (26) in the moving direction at a first position is different from the width at a second position different from the first position along the direction perpendicular to the moving direction.

Abstract: The subject matter disclosed herein describes an optical sensor used in a safety system. The sensor includes two pixel matrices on a single substrate. Each of the pixel matrices are arranged in a row and column format, and pixels from one matrix are interspersed with pixels from the other matrix such that alternating pixels in each row and column belong to separate matrices. Two sets of selection logic allow each matrix to be enabled separately. Additional monitoring logic is included to detect shorted pixels and/or shorted selection lines. In addition, the frames generated by each pixel array may be compared to detect variation in performance between arrays.

Abstract: An apparatus for controlling a pixel output level includes a column signal line connected to an output node of at least one pixel sensor. The apparatus includes a load circuit is connected between the column signal line and a ground terminal. The apparatus also includes a level adjusting circuit configured to adjust a voltage level of a pixel signal output from the at least one pixel sensor to the column signal line based on a correction target value.

Abstract: A sensor assembly, a method, and a measuring system for capturing the distribution of at least one variable of an object are disclosed. The sensor assembly has at least one sensor element comprising at least one first sensor sub-element and at least one second sensor sub-element. The at least one first sensor sub-element is transparent for at least one wavelength region of light, the at least one second sensor sub-element is sensitive to at least one variable. Furthermore a method and measuring system and an illumination system for illuminating the sensor assembly and the object is provided.

Abstract: A method for finding a reference correction value of an angular encoder index mark is given. The angular encoder has a first read head, a second read head, and a patterned element that includes incremental marks and an index mark. In a first instance, the first read head detects the presence of the index mark and, in response, the second read head generates a first analog signal. In a second instance, the first read head detects the presence of the index mark and, in response, the second read head generates a second analog signal. A processor determines the reference correction value based at least in part on the first analog signal and the second analog signal.

Abstract: A method and associated apparatus are disclosed for measuring illumination characteristics of a luminaire having unknown characteristics. The method includes steps of providing an array of calibrated photodetectors in known locations in proximity to a mounting location, and then illuminating the array with a luminaire having unknown illumination properties. The resulting data is used to calculate the luminous intensity vs. angle from the luminaire and the luminous flux of the luminaire. Methods of calibrating the measurement with a known luminaire are presented along with methods of determining the angular position of the detectors in the array. Color-sensitive detectors can be used to determine the angular distribution and average value of the luminaire's correlated color temperature.

Abstract: An exemplary laser instrumentation bracket includes a support structure providing a recess configured to receive a collar of a laser housing. The laser housing has a main body extending axially through an aperture of the support structure when the recess receives the collar.

Abstract: An apparatus and corresponding method for line-scan imaging includes a 2D array of light-sensitive detector elements divided into a plurality of sub-arrays. An electrical circuit can be configured to determine a correction for parallax based on detector element values from at least two rows of parallax detecting elements to enable images captured by the sub-arrays to be co-aligned with each other. The 2D array and parallax detecting elements can be located on the same substrate chip. Image data from sub-arrays can be co-aligned with each other based on parallax data from the parallax detecting elements and used to produce hyperspectral images corrected for parallax.

Abstract: A communication light detection adapter includes an adapter main body in which a light extraction hole is formed, a sliding lid attached to the adapter main body so as to slide between a closed position to close the light extraction hole and an open position to open the light extraction hole, and an energizing member to apply a pressure to the sliding lid in a direction from the open position toward the closed position.

Abstract: A solid-state imaging device includes: a first lens layer; and a second lens layer, wherein the second lens layer is formed at least at a periphery of each first microlens formed based on the first lens layer, and the second lens layer present at a central portion of each of the first microlenses is thinner than the second lens layer present at the periphery of the first microlens or no second lens layer is present at the central portion of each of the first microlenses.

Abstract: An object of the present invention is to provide a photosensor lens which, in the case of using a plurality of light emitting elements to form a reflective photosensor, can maximize the efficiency of light irradiation of the light emitting elements with a simple structure. Provided is a photosensor lens configured to condense irradiation light from a plurality of light emitting elements 2 housed in a unit case 1 in a detection region 3 outside the unit case 1, and to condense reflected light from the detection region 3 at a light receiving element 4 in the unit case 1. A single convex lens surface 5 is formed on one side of the photosensor lens, and a light-receiving convex lens surface 6 sharing an optical axis with the single convex lens surface 5, and a plurality of light-emitting convex lens surfaces 7 each having an optical axis in parallel with the optical axis of the light-receiving convex lens surface 6 are integrally formed on the opposite side of the photosensor lens.

Abstract: The present publication describes a heat-resistant optical layered structure, a manufacturing method for a layered structure, and the use of a layered structure as a detector, emitter, and reflecting surface. The layered structure comprises a reflecting layer, an optical structure on top of the reflecting layer, and preferably shielding layers for shielding the reflecting layer and the optical structure. According to the invention, the optical structure on top of the reflecting layer comprises at least one partially transparent layer, which is optically fitted at a distance to the reflecting layer.

Abstract: The present invention relates to a solid state switch that may be used as in optically-triggered switch in a variety of applications. In particular, the switch may allow for the reduction of gigawatt systems to approximately shoebox-size dimension. The optically-triggered switches may be included in laser triggered systems or antenna systems.

Abstract: An optical radiation detection system (100) comprising: an optical medium (1) structured to define a region (5) suitable for transmitting an optical radiation and being associated to at least one electric parameter varying as a function of the optical radiation concerning said region; at least one electrode (2, 3) electrically coupled to the optical medium (1), and spaced from said region (5), an electric power generator (4) connected to said at least one electrode (2) and structured to provide an electric signal (Se) to be applied to the optical medium. Further, the system comprises an electric measuring circuit (50) connected to said at least one electrode (2) and structured to provide a measuring electric signal (SM) representing a variation of said at least one electric parameter.

Abstract: A reconfigurable photonic integrated circuit focal plane array (RPIC-FPA) includes detectors and photonic integrated circuit coupled to the detectors that are configured to mix a return signal beam with local oscillator (LO) beams to produce a combined beam and direct the combined beam to the detectors. The LO beams have reconfigurable optical properties enabled by the RTIC-FPA. The LO beams are individually addressed to switch the detectors between a direct detection mode and various coherent detection modes based on adjustments to the optical properties of the LO beams. In the coherent detection mode, the controller is configured to mix the return signal beam with the LO beam having adjusted optical properties to produce the combined beam, and, in the direct detection mode, the controller is configured to disable the LO beams based on adjustments to the optical properties and to direct the return signal beam to the detectors without mixing.

Abstract: An example embodiment includes a playback device comprising a wireless communications interface that includes an RF antenna, a capacitive proximity sensor comprising a grounding plane that is coupled to the RF antenna, one or more processors, and a data storage having stored therein instructions executable by the one or more processors to cause the playback device to perform operations. The operations include detecting that an object is in proximity to the capacitive proximity sensor and responsively preparing the playback device to play back audio.

Abstract: An imaging and pulse detection array includes: a plurality of pixels connected to a controller, the controller being configured to generate an image based on an image signal originating from each pixel in the plurality of pixels and configured to detect a pulse on at least one of the pixels in the plurality of pixels, and each of the pixels in the plurality of pixels including an imaging circuit and a pulse detection circuit, the imaging circuit and the pulse detection circuit including a shared circuit architecture, and wherein the imaging circuit and the pulse detection circuit include a shared portion.