Abstract: Aspects of the subject technology relate to control circuitry for light-emitting diodes (LEDs). The control circuitry may include an LED timing controller integrated circuit configured to receive data from host circuitry for an electronic device, an LED row driver integrated circuit, the LED row driver integrated circuit configured to connect a high voltage power rail to the light-emitting diodes via plurality of switches, and LED column driver integrated circuits each configured to adjust a current through at least one of the light-emitting diodes.

Abstract: A printing apparatus of this invention scans with a tester a testing chart printed by a printing controller to acquire testing image data. A total amount of displacement calculator calculates an amount of displacement of a recording position including a direction of misregister as a total amount of displacement, based on a large amount of displacement determined by a large amount of displacement determiner, a direction of displacement detected by a direction of displacement detector, a shift amount corresponding to an amount of displacement detecting chart determined by an amount of displacement detecting chart determiner, and a peak position of the amount of displacement detecting chart determined by the amount of displacement detecting chart determining unit. Thus, since a total amount of displacement of the misregister can be calculated only by printing the testing chart on web paper WP, an amount of displacement of the misregister in the transport direction can be obtained easily in a short time.

Abstract: A high-voltage device has an inner conductor and an insulating member that surrounds the inner conductor along the longitudinal direction thereof. In order to increase the reliability of the high-voltage device, at least one optical waveguide rests against the inner conductor in at least some sections, extends out of the insulating member and can be connected to an evaluation unit for recording measured temperature values. Furthermore a method measures a temperature of the inner conductor of the high-voltage device.

Abstract: System, including methods and apparatus, for optical detection. The system may comprise a light source to generate a beam of light, an optical element including a light guide and an exit window, and at least one detector.

Abstract: A light-emitting apparatus according to the present invention, includes: a light source board on which a first light source group including a plurality of light sources and a sensor that detects light or temperature are disposed; and a reflection sheet that is disposed on a side of the light source board where the first light source group and the sensor are disposed, and includes an opening from which the first light source group is exposed, wherein the sensor is surrounded by the plurality of light sources.

Abstract: A display module and a method for monitoring backlight brightness are provided in the present disclosure. The display module includes a display region including an opening region and a non-opening region. The display module includes a backlight module and an array substrate. The array substrate is at a light-exiting side of the backlight module. The array substrate includes a plurality of gate lines which extends along a first direction and is arranged along a second direction, and further includes a plurality of data signal lines which is arranged along the first direction and extends along the second direction. The array substrate further includes a first substrate and at least one photosensitive unit, where the photosensitive unit is at a side of the first substrate away from the backlight module; and the photosensitive unit is disposed at the non-opening region for sensing a luminous brightness of the backlight module.

Abstract: Power consumption needed to illuminate a subject is reduced and the subject is continuously monitored. Each of a plurality of light sources emits light to the subject. An imaging circuitry obtains a captured image by imaging the subject. A controller performs light emission control to change a light source that emits light from among the plurality of light sources and causes the imaging circuitry to image the subject. A determiner determines whether a detection target that is pre-determined exists in an image area that is a part of the captured image obtained by the imaging circuitry and corresponds to the light source that emits light during imaging for obtaining the captured image.

Abstract: An ambient light color sensor adapted to determine color of ambient light and method for calibrating thereof. The ambient light color sensor comprises a sensor body having at least one diffuser and a light color sensing module disposed below the at least one diffuser. The light color sensing module comprises a plurality of channels adapted to detect light collected by the at least one diffuser at different wavelengths to produce sensor readings.

Abstract: An optical element includes a Fresnel surface including valleys between Fresnel segments. Compensation trenches disposed in the valleys are configured to accept excess of an optical layer received in the valleys during a deposition of the optical layer. The compensation trenches are filled with the optical layer.

Abstract: A system and method for analyzing a surface of an object is provided. The system includes a 3D measurement device operable to acquire a plurality of points on the surface of the object and determine 3D coordinates for each of the points. The system further includes processors operably coupled to the 3D measurement device. The processors are responsive to computer instructions when executed on the processors for performing a method comprising: generating a point cloud from the 3D coordinates of the plurality of points; extracting a first set of points from the plurality of points; defining a first reference geometry through the first set of points; measuring at least one first metric from each of the points in the first set of points to the first reference geometry; and identifying a nonconforming feature based at least in part on the at least one first metric.

Abstract: The disclosure discloses a stylus and a human-machine interactive apparatus. The stylus includes: a body, including a refill, a housing and a clamping piece; wherein the refill can perform a lever deflection motion by taking the clamping piece as a pivot when it is under a pressure; a light emitter, fixed at an end portion of the refill and has a light emitting surface facing away from the refill; a light signal sensing element on a side of the end portion of the refill and configured to sense a light beam emitted by the light emitter and to output coordinate information of a position irradiated by the light beam; and a micro control unit configured to generate a corresponding drive signal according to the coordinate information output by the light signal sensing element and to send the drive signal to a touch screen via the refill.

Abstract: An apparatus comprises a photodetector (PD) that irradiates a disk with laser light and outputs a signal based on a reflected light from the disk, a front monitor that outputs a reference signal based on an emitted light of a laser diode, and a data detection processing unit to which an output signal of the PD is input to generate a reproduction signal. The data detection processing unit includes a reproduction signal adaptive equalizer that outputs an equalization signal by adaptive equalization processing based on the PD output signal, and a laser noise adaptive equalizer that outputs the equalization signal by the adaptive equalization processing based on a laser noise signal, and generates the reproduction signal in which the laser noise is reduced on the basis of an arithmetic operation result of the output of the reproduction signal adaptive equalizer and the output of the laser noise adaptive equalizer.

Abstract: A multi-channel light detection and ranging system includes a plurality of active channels, each comprising a photosensitive element arranged to be exposed to light and an analog front end circuit arranged for receiving a signal from the photosensitive element. A compensation channel comprises a compensation element and an analog front end circuit arranged for receiving signals from the compensation capacitor. A processing unit arranged for receiving signals from the active channels and the compensation channel, deriving at a compensation signal from the signal received from the compensation channel, and compensating for the crosstalk interference and/or the interference common to the analog front end circuits of the active channels, using the compensation signal.

Abstract: A lighting fixture includes a light source that emits an illumination light and a receiver configured to receive a lighting control message from a photo sensor device. The lighting fixture further includes a lighting controller configured to adjust the illumination light based on the lighting control message. Adjusting the illumination light by the lighting controller includes changing a Correlated Color Temperature (CCT) of the illumination light.

Abstract: A laser apparatus may include a spectrum controller and a spectrum modulator. The spectrum controller may control a center wavelength and/or a bandwidth of a spectrum of a laser beam. The spectrum modulator may modulate the spectrum of the laser beam having the center wavelength and/or the bandwidth controlled by the spectrum controller. Thus, the laser beam may have the spectrum optimal for a semiconductor fabrication process. Particularly, the substrate may be accurately diced using the laser beam having the optimal spectrum.

Abstract: A photodiode current comparison circuit has a first current source coupled to a circuit node configurable to operate in a first mode, a second current source coupled to the circuit node configurable to operate in a second mode opposite the first mode, and a third current source switchable to route a current to the circuit node in response to a data signal using a transistor coupled between the circuit node and the third current source. A photodiode is coupled to the circuit node. In a first configuration, an anode of the photodiode is coupled to the circuit node and a cathode of the photodiode is coupled to a power supply terminal. In a second configuration, a cathode of the photodiode is coupled to the circuit node and an anode of the photodiode is coupled to a power supply terminal. An amplifier provides an error signal of the photodiode.

Abstract: A vehicle-assistance system for classifying objects in a vehicle's surroundings is provided. The system may include at least one memory configured to store classification information for classifying a plurality of objects and at least one processor configured to receive, on a pixel-by-pixel basis, a plurality of measurements associated with LIDAR detection results. The measurements may include at least one of: a presence indication, a surface angle, object surface physical composition, and a reflectivity level. The at least one processor may also be configured to receive, on the pixel-by-pixel basis, at least one confidence level associated with each received measurement, and access the classification information. The at least one processor may further be configured to, based on the classification information and the received measurements with the at least one associated confidence level plurality, identify a of pixels as being associated with a particular object.

Abstract: Provided is a radiation monitor, including: a radiation detection unit which includes a radiation detection element, the radiation detection element emitting light of a predetermined light emission wavelength; a light emission unit which emits light of a wavelength different from the light emission wavelength; a wavelength selection unit which passes the light of the light emission wavelength, and is set to a first mode to block the light from the light emission unit; an optical transmission line which transmits the light; a light detection unit which converts the light passing through the wavelength selection unit into an electric pulse; and a control unit which measures a count rate of the electric pulse, and determines whether at least the light emission unit is degraded on the basis of the count rate and a light intensity of the light emission unit.

Abstract: Systems for directing a pulsed beam of charged particles include an ion source configured to produce a pulsed ion beam that includes at least one ion bunch. Such systems include an electromagnet for producing an electromagnetic field through which the pulsed ion beam travels, and an automated switch that selectively activates the electromagnet. A source of radiation triggers the automated switch, and at least one processor is configured to activate the electromagnet as the ion bunch traverses the electromagnetic field. Such systems may be useful, for example, for filtering a pulsed ion beam to select ions falling within a desired energy range and/or for providing pulsed ion radiation at desired times.

Abstract: Optical apparatus includes a diffractive optical element (DOE), which includes multiple optical surfaces, including at least an entrance surface and an exit surface, and a side surface, which is not parallel to the optical surfaces of the DOE. A grating is formed on at least one of the optical surfaces so as to receive radiation entering the DOE via the entrance surface and to diffract the radiation into a predefined pattern comprising multiple diffraction orders that exit the DOE via the exit surface. An optical detector is positioned in proximity to the side surface so as to receive and sense an intensity of a high order of the radiation diffracted from the grating that passes through the side surface of the DOE.

Abstract: A processing device as a personal digital assistant includes a display unit configured to display an image, a connection detector configured to detect that an external display device has been connected, an image output unit configured to output an image displayed on the display unit to the display device in response to the connection of the display device, and a user interface output unit configured to switch an image displayed on the display unit to display of a user interface for instructing execution of processing related to the image output to the display device at a predetermined brightness value in response to the connection of the display device.

Abstract: Techniques to compensate non-radiation hardened components for changes or degradation in performance that result from exposure to radiation. During testing and modeling phase, a component's performance may be characterized as a result of the exposure to radiation. In some examples, some performance characteristics, such as voltage response, frequency response, gain, leakage or other characteristics, may change as the component's exposure to an amount of radiation increases. During normal operation, a system may include one or more devices that measure the amount of radiation to which the system may be subjected, such as a radiation dosimeter. The system may compensate the non-radiation hardened component based on the amount of radiation received the known component performance change caused by radiation as determined during the modeling phase.

Abstract: A split type downlight apparatus includes a lamp cap, a driving component, a light body assembly, a spring and an electrical connector. The light body assembly includes a light shell and a light assembly fixed in the light shell. One end of the electrical connector electrically connects to the driving component. The other end of the electrical connector electrically connects to the light assembly. Two ends of the spring are hooked in the bottom of the driving housing and the top of the light shell respectively. The driving housing connects to the light shell through the spring. The driving board and the light assembly are separated.

Abstract: A luminous device for a motor vehicle, said device including a pixelized light source and an optical system that is arranged to project a pixelized light beam emitted by the pixelized light source, the optical system comprising a first mirror arranged to collect and reflect rays of the pixelized light beam emitted by the pixelized light source, a second mirror arranged to reflect the rays reflected by the first mirror, and a third mirror arranged to receive the rays reflected by the second mirror and to reflect these received rays so as to correct field aberrations. The invention enables improved projection of a pixelized light beam by a luminous motor-vehicle device.

Abstract: An imaging system for a vehicle may include a first image capture device having a first field of view and configured to acquire a first image relative to a scene associated with the vehicle, the first image being acquired as a first series of image scan lines captured using a rolling shutter. The imaging system may also include a second image capture device having a second field of view different from the first field of view and that at least partially overlaps the first field of view, the second image capture device being configured to acquire a second image relative to the scene associated with the vehicle, the second image being acquired as a second series of image scan lines captured using a rolling shutter. As a result of overlap between the first field of view and the second field of view, a first overlap portion of the first image corresponds with a second overlap portion of the second image.

Abstract: A printing apparatus is provided. The apparatus comprises a light-emitting element, a light-receiving element including a first terminal and a second terminal, a reference current generator supplying a reference current, a comparator comparing a monitor current with the reference current, the light-receiving element supplying the monitor current to the second terminal in accordance with a light emission amount, a driver driving the light-emitting element based on an output of the comparator, and a reference voltage controller. The comparator includes a first input terminal connected to the second terminal and a second input terminal. The reference voltage controller supplies a reference voltage selected from at least two voltage values to the second input terminal, and to control the voltage of the second terminal to be a voltage according to the reference voltage.

Abstract: A microscope apparatus includes: a light source configured to irradiate a specimen with illumination light; a revolver configured to hold plural objective lenses and arranges the plural objective lenses switchably onto an optical path; a sensor configured to detect an objective lens arranged on the optical path; a first illumination light quantity table configured to store therein a first illumination light quantity set for each of the plural objective lenses; a second illumination light quantity table configured to store therein a second illumination light quantity specified by an observer; an illumination light quantity setting unit configured to set validity/invalidity of the first illumination light quantity and second illumination light quantity; and an illumination controller configured to control light quantity of the light source to the first illumination light quantity or second illumination light quantity validated by the illumination light quantity setting unit.

Abstract: A system for determining the surface topology and associated color of at least a portion of a three-dimensional structure includes a hand-held device. A scanning system may be configured to provide depth data of the portion. An imaging system may be configured to provide two-dimensional color image data of the portion associated with the plurality of data points. A processor may be operably coupled to the hand-held device and configured to associate the depth data with the color image data.

Abstract: An asymmetrically shaped chip-scale packaging (CSP) light-emitting device (LED) includes an LED chip, a photoluminescent structure (or a light-transmitting structure), and a reflective structure. The photoluminescent structure covers the upper surface and/or the edge surface of the LED chip; and the reflective structure at least partially covers the edge surface of the photoluminescent structure. The reflective structure partially reflects the primary light emitted from the edge surface of the LED chip or the converted secondary light radiated from the edge surface of the photoluminescent structure, therefore shaping the radiation pattern asymmetrically.

Abstract: A virtual or augmented reality display system that controls power inputs to the display system as a function of image data. Image data itself is made of a plurality of image data frames, each with constituent color components of, and depth planes for displaying on, rendered content. Light sources or spatial light modulators to relay illumination from the light sources may receive signals from a display controlled to adjust a power setting to the light source or spatial light modulator based on control information embedded in an image data frame.

Abstract: An LED switch device and a matrix thereof are disclosed. There is an electroluminescent semiconductor element with a first polarity contact and a second polarity contact. There is also a first polarity LED lead frame, to which the electroluminescent semiconductor element is mounted. The first polarity contact of the electroluminescent semiconductor element is electrically connected to the first polarity LED lead frame. The LED switch device has a second polarity LED lead frame electrically connected to the second polarity contact of the electroluminescent semiconductor element. The LED switch device also has a touch sensor lead frame that is electrically connected to a touch sensor lead.

Abstract: The color generated by two differently-colored LEDs is maintained over time and different temperatures by sensing their combined output color using two phototransistors having different spectral sensitivities the output voltages of which are correlated to a desired output color. As the combined output color changes, the phototransistors' output voltages will change. The currents provided to the LEDs can thereafter be adjusted to maintain the output voltages and thus maintain the combined output color.

Abstract: A luminescence shock avoidance algorithm selectively limits the brightness level of a display device when the display device is activated in a dark environment to prevent the temporary vision impairment that can occur when a display device is activated in a dark environment. The algorithm receives the state of the display (e.g. on or in standby mode), and can optionally receive an ambient lighting value from an ambient light sensor and a user-selectable manual brightness adjustment setting to determine whether luminescence shock avoidance should even be triggered, and if it is triggered, how much should the brightness level of the display be limited.

Abstract: A jet engine includes an external cowling, a member such as an oil reservoir, and a monitoring system for the member that is able to determine information relating to the member. The external cowling includes a visualization screen that is able to communicate with the monitoring system or directly with the member, so as to display the information specific to the member. When installed in the nacelle of the jet engine, this cowling becomes a smart cowling. The system also includes a method for inspecting a member of an aircraft jet engine and a corresponding computer program.

Abstract: A method and an apparatus for optical measurement of a liquid sample placed in a sample well where the sample in the sample well is exposed to excitation light at first wavelength from an excitation light source, which excitation light generates a collection of singlet state oxygen molecules from donor molecules in the liquid sample, said singlet state oxygen molecules reacting with acceptor molecules in the liquid sample causing said acceptor molecules to emit chemiluminescence emission light at second wavelength, which second wavelength is shorter than said first wavelength, and where the emission light produced by the excitation light is measured with a detector, characterized in that the excitation light source is a LED.

Abstract: An embodiment of a system for providing illumination for an endoscope device includes a light source comprising laser bundles each having laser light emitters, an electromagnetic sensor embedded within the light source to sense electromagnetic energy emitted from at least one laser light emitter within each of the laser bundles, and a control circuit in electronic communication with the electromagnetic sensor and at least one laser light emitter. The light source sequentially pulses electromagnetic energy in a plurality of individual electromagnetic partitions. The electromagnetic sensor receives electromagnetic energy from at least one laser light emitter and measures an amount of electromagnetic energy generated by at least one laser light emitter.

Abstract: A first embodiment of the disclosure provides a system for detection of intrusion into a working space of a material testing device wherein visual user detection system uses digital image processing and filtering in order to identify user entry into the specimen test space. The visual user detection system has built-in redundancy for safety compliance and further can be used for data entry with respect to test data setup and configuration. A second embodiment of the disclosure uses a digital camera mounted on the frame of the material testing device, oriented toward a striped pattern on the top of the front base cover. The striped pattern is recognized by a vision algorithm which creates virtual boundary lines within the pattern. A detected intrusion, such as by a user body part, will be detected and the material testing machine put into a safe state.

Abstract: A sampling gate comprising a first frequency input coupled to a first frequency path from a broadband photodiode. The sampling gate also includes a positive bias input coupled to a positive offset portion of a second frequency path from the broadband photodiode. The sampling gate also includes a negative bias input coupled to a negative offset portion of the second frequency path from the broadband photodiode. The sampling gate combines a first frequency signal from the first frequency path and a second frequency signal from the second frequency path to create a combined broadband frequency signal from the broadband photodiode.

Abstract: Advanced driver assistance systems can be designed to recognize and to classify traffic signs under real time constraints, and under a wide variety of visual conditions. This disclosure provides techniques that employ binary masks extracted by color space segmentation, with a different binary mask generated for each sign shape. Temporal tracking is employed to add robustness to the detection system. The system is generic, and is trainable to the traffic signs used in various countries.

Abstract: A visible light sensor may be configured to sense environmental characteristics of a space using an image of the space. The visible light sensor may be controlled in one or more modes, including a daylight glare sensor mode, a daylighting sensor mode, a color sensor mode, and/or an occupancy/vacancy sensor mode. In the daylight glare sensor mode, the visible light sensor may be configured to decrease or eliminate glare within a space. In the daylighting sensor mode and the color sensor mode, the visible light sensor may be configured to provide a preferred amount of light and color temperature, respectively, within the space. In the occupancy/vacancy sensor mode, the visible light sensor may be configured to detect an occupancy/vacancy condition within the space and adjust one or more control devices according to the occupation or vacancy of the space. The visible light sensor may be configured to protect the privacy of users within the space via software, a removable module, and/or a special sensor.

Abstract: A lamp system, and a method of operating the lamp system, are provided. The lamp system includes a gas discharge lamp, an electronic ballast and a control unit. A performance influencing control variable of the lamp system is used. The method allows operation with a high emission performance independent of the design thereof and of any potential changes caused by lamp aging and without any knowledge of the optimal operating temperature. According to the invention a light intensity control is provided, in which an actual value of a light intensity emitted by the gas discharge lamp is measured using a light sensor and the emitted light intensity is used as an actuating variable.

Abstract: One example includes a bias-based Mach-Zehnder modulation (MZM) system. The system includes a Mach-Zehnder modulator to receive and split an optical input signal and to provide an intensity-modulated optical output signal based on a high-frequency data signal to modulate a relative phase of the split optical input signal to transmit data and based on a bias voltage to modulate the relative phase of the split optical input signal to tune the Mach-Zehnder modulator. The system also includes a bias feedback controller to compare a detection voltage associated with the intensity-modulated output signal with a reference voltage to measure an extinction ratio associated with an optical power of the intensity-modulated optical output signal and to adjust the bias voltage based on the comparison to substantially maximize the extinction ratio.

Abstract: Embodiments of the present disclosure provides a light sensor, including: a first thin film transistor, having a first terminal connected to a first node, a second terminal receiving a first level signal, and a control terminal receiving a first control signal; a second thin film transistor, having a first terminal connected to the first node, a second terminal receiving a second level signal, and a control terminal receiving a second control signal; a voltage follower, having an input terminal connected to the first node, and an output terminal; the third thin film transistor, having a first terminal connected to the output terminal of the voltage follower, a second terminal connected to an input terminal of an output unit, and a control terminal receiving a third control signal; and the output unit, having an input terminal connected to the second terminal of the third thin film transistor, and an output terminal connected to an output terminal of the light sensor.

Abstract: The present disclosure provides systems and methods for occupancy detection. In various embodiments, the occupancy detection system includes a server configured to wirelessly communicate with one or more occupancy detectors. Each occupancy detector includes or is associated with an object holder. The object holder can have one of two occupancy states: an occupied state in which an object occupies the object holder or an unoccupied state in which no object occupies the object holder. The occupancy detector includes a sensor and a controller configured to use sensor feedback to determine when the object holder changes occupancy states from the occupied state to the unoccupied state or from the unoccupied state to the occupied state. When the controller determines that the object holder changes occupancy states, the controller generates occupancy data that reflects this changed state and sends it to the server.

Abstract: A method for testing an optical investigation system, with an imaging device, a video camera and a light source for optical investigation of an object including a reference surface with predetermined optical properties being illuminated with illuminating light from a light source. An image of the reference surface is recorded by the imaging device and the video camera. An operating condition of the video camera that prevails during the recording of the image is recorded. The functionality or another property of the investigation system is determined on the basis of the recorded operating condition.

Abstract: A CMOS type semiconductor image sensor module wherein a pixel aperture ratio is improved, chip use efficiency is improved and furthermore, simultaneous shutter operation by all the pixels is made possible, and a method for manufacturing such semiconductor image sensor module are provided. The semiconductor image sensor module is provided by stacking a first semiconductor chip, which has an image sensor wherein a plurality of pixels composed of a photoelectric conversion element and a transistor are arranged, and a second semiconductor chip, which has an A/D converter array. Preferably, the semiconductor image sensor module is provided by stacking a third semiconductor chip having a memory element array. Furthermore, the semiconductor image sensor module is provided by stacking the first semiconductor chip having the image sensor and a fourth semiconductor chip having an analog nonvolatile memory array.

Abstract: The present disclosure discloses a test circuit, an array substrate, and a light-emitting display apparatus. The test circuit is arranged at an output terminal of a scan driving circuit and is configured to test a current output characteristic of a pixel unit when the scan driving circuit does not provide a drive signal for the pixel unit. Test circuit includes an enable signal line, a scanning signal ON line, and a plurality of switch transistors. Each of the switch transistors includes a first terminal, a second terminal, and a third terminal, wherein the first terminal of each of the switch transistors connects the enable signal line, the second terminal connects the scanning signal ON line, and the third terminal connects the pixel unit.

Abstract: A light source section configured to couple a plurality of laser beams having different wavelengths and emit measuring light; an illuminating section configured to illuminate a measurement target at a predetermined angle; a light receiving section configured to receive reflected measuring light from the measurement target; and a controlling section configured to compute a reflectance at each of the wavelengths, based on a light receiving result. The light source section includes: a first and a second light source configured to emit each laser beams having different wavelengths; and a dichroic mirror disposed in optical axes of the laser beams intersected, configured to combine the laser beams. The light receiving section includes: a first, a second and a third light receiving unit configured to receive the reflected measuring light from different distance. The controlling section is configured to select which of results from each light receiving unit to use.

Abstract: A SiPM tile includes SiPM arrays on a detector die, each of the SiPM arrays including a first plurality of microcells and a second plurality of reference microcells dispersed on the die, each reference microcell including an optically-opaque mask, a readout circuit each including a respective charge sensitive amplifier (CSA) connected to one of the reference microcells, each CSA configured to accumulate the dark current of the reference microcell during a selected time window, a hybrid temperature control circuit configured to receive an output signal from each CSA, and to determine the real-time temperature of the die based on the received output signal, to provide the real-time temperature to a temperature compensation and correction control unit that adjusts a cooling/heating system flow provided to the die, the adjustment based on the real-time temperature. A method for compensating the operating temperature variation of the SiPM tile is also disclosed.

Abstract: An exposure apparatus includes a stage on which a substrate is placed, a plurality of light irradiation units configured to emit light independently of each other to different positions in a right and left direction on a surface of the substrate, so as to form a strip-like irradiation area extending from one end of the surface of the substrate to the other end of the substrate, a stage moving mechanism configured to move the stage in a back and forth direction relative to the irradiation area, such that the whole surface of the substrate is exposed, and a light receiving unit configured move in the irradiation area between one end and the other end of the irradiation area in order to detect an illuminance distribution of the irradiation area in a longitudinal direction of the irradiation area.