The invention relates to a gonioradiometer for the direction-dependent measurement of at least one lighting or radiometric characteristic variable of an optical radiation source (2), having: an apparatus for moving a radiation source (2) during a measurement operation about a first axis (31) and about a second axis (32) that is perpendicular to the first axis (31); a measuring wall (5) exhibiting homogeneous reflection, on which the light from the radiation source (2) is reflected; and a locationally fixed and immovably arranged camera (7) having an optical unit (8) and a two-dimensional sensor chip (100). The camera (7) is arranged such that it captures light reflected on the measuring wall (5), wherein the reflected light is imaged by the optical unit (8) of the camera (8) onto the sensor chip (100) of the camera (7), and wherein the sensor chip (100) records measurement values as the radiation source (2) is rotated during a measurement operation, which measurement values indicate the lighting or radiometric characteristic variable substantially on a spherical surface about the radiation centroid of the radiation source (2). The invention furthermore relates to a method and a gonioradiometer for the direction-dependent measurement of at least one lighting or radiometric characteristic variable of an optical radiation source (2), in which provision is made for at least two fixedly installed sensors (1, 100) to be used which provide measurement values simultaneously during a measurement.

Systems and methods for calibrating non-spatial measurements of a device under test (DUT) for misalignment between the DUT and a non-spatial measurement device are disclosed herein. A system for generating a misalignment calibration database can include, for example, a non-spatial measurement device and a high-precision translation stage. The system can generate a misalignment calibration database by taking measurements of a DUT at multiple misalignment locations. A system for measuring a DUT can include, for example, a spatial measurement device, a non-spatial measurement device, a translation stage, and/or a carrier tray. The system can capture measurements of the DUT at a first position and calibrate the measurements for misalignment using calibration data corresponding to the first position. For example, the system can retrieve calibration data from a calibration misalignment system that was taken at the same and/or different locations proximate the position of the DUT.

An optical instrument for determining a wavelength of light generated by a light source. The optical instrument may include a signal generator for generating a driving signal, a tunable optical filter device configured to receive the driving signal, the tunable optical filter device configured to diffract the light generated by the light source based on the driving signal, an optical detector device configured to detect a timing of maximum diffraction of light diffracted by the tunable optical filter device, and an analyzer configured to determine the wavelength of the light based the timing of maximum diffraction.

Given the complexity of architectural spaces and the need to calculate spherical irradiances, it is difficult to determine how much ultraviolet radiation is necessary to adequately kill airborne pathogens. An interior environment with luminaires is modeled. Spherical irradiance meters are positioned in the model and the direct and indirect spherical irradiance is calculated for each sensor. From this, an irradiance field is interpolated for a volume of interest, and using known fluence response values for killing pathogens, a reduction in the pathogens is predicted. Based on the predicted reduction, spaces are built accordingly, and ultraviolet luminaires are installed and controlled.

A UV irradiation apparatus for coating systems that coat rigid or film-like workpieces, in particular furniture parts, having a transport apparatus for transporting workpieces provided with coating material from an inlet to an outlet through the UV irradiation apparatus, a UV light source arranged above the transport apparatus that irradiates the coated workpieces with UV light in an irradiation region between the inlet and the outlet, and a reflector or cover which shields the UV light source upward. A housing covers the irradiation region and the UV light source, which generally extends above the transport apparatus. A sensor of a measuring apparatus for direct or indirect automated measurement of radiant flux of the UV light source is arranged in the housing, and the sensor is in particular fitted fixed or movably on the housing or a holder. A method for quality assurance using this UV irradiation apparatus is also provided.

The present disclosure includes an electronic device and a method thereof. The electronic device includes a display, an ambient light sensor, and at least one processor, operatively connected to the display and the ambient light sensor. The at least one processor is configured to detect, by using the ambient light sensor, ambient light of the electronic device during a first duration in a state in which the display is turned off, identify a setting for being used for the ambient light sensor, based at least in part on a characteristic of the ambient light, detect, by using the ambient light sensor, ambient light of the electronic device during a second duration based at least in part on the identified setting, and control a function of the display, based at least in part on the characteristic of the ambient light detected during the second duration.

An optical measuring device includes: a stimulus value acquirer that receives light from a measurement target and continuously acquires intensity corresponding to a stimulus value at a regular time interval; a response characteristic acquirer that acquires an impulse response characteristic from a storage that stores the impulse response characteristic corresponding to a luminous stimulus response; and a hardware processor that performs digital filter processing on continuous data of stimulus value intensity acquired by the stimulus value acquirer by the impulse response characteristic acquired by the response characteristic acquirer to generate data on which the luminous stimulus response is superimposed.

Embodiments of the present disclosure provides a method for detecting variation value comprising selecting a numerical value in a first time interval as a comparison basis; selecting a numerical value in a second time interval as a inspection interval; statistically identifying the numerical value of the inspection interval and the numerical value of the comparison basis are to detect a variation value.

An inspection method and an inspection platform applicable for inspecting a light source used to expose a substrate. The light source is adapted to form an illuminated area on a surface of the substrate. The inspection method includes the following steps: placing at least one inspection component on the surface of the substrate; causing the at least one inspection component and the illuminated area to have a relative movement and a relative speed in a specific direction so as to make the illuminated area move across the at least one inspection component, wherein in the specific direction, the illuminated area is smaller in size than the at least one inspection component; inspecting photon energy of incident light in the illuminated area by the at least one inspection component during the relative movement; and determining optical values of the light source according to the photon energy and the relative speed.

In one aspect, luminaires are described herein having sensor modules integrated therein. In one aspect, a luminaire described herein comprises a light emitting face including a LED assembly. A sensor module is integrated into the luminaire at a position at least partially overlapping the light emitting face. In another aspect, a luminaire described herein comprises a LED assembly and a driver assembly. A sensor module is integrated into the luminaire along or more convective air current pathways cooling the LED assembly or driver assembly.