Example embodiments described herein involve a system for testing a light-emitting module. The light-emitting module may include a mounting platform configured to hold a light-emitting module for a camera. The mounting platform may also be configured to rotate. The system may further include a housing holding a plurality of photodiodes arranged in an array over at least a 90 degree arc of a hemisphere. The system may also include a controller configured to control the photodiodes and the rotation of the mounting platform.

There is provided a microprocessor-controlled rover having light and positioning sensing capabilities for the semiautonomous taking of light level readings in a more accurate manner. In embodiments, the rover comprises a cosine and V lambda corrected light sensor. The system may comprise a control computer which generates a waypoint file comprising a plurality of investigative waypoints within investigative area boundary coordinates, including that which may be configured using an on¬screen GIS database interface. The investigative waypoints may be configured appropriately by the control computer, including in accordance with the relevant light audit settings. The waypoint file may be transmitted wirelessly to the rover. As such, the rover moves to each investigative waypoint according to the position sensed by the position sensor and the location specified by each investigative waypoint. At each investigative waypoint, the rover takes light level readings including in manners for enhancing the accuracy thereof.

The invention provides a UV light monitoring system that is capable of estimating the UV irradiance on a target surface oriented at an arbitrary angle relative to a UV emitter that emits UV light. The UV light monitoring system can be used in a system or process for disinfecting a space, where the UV light monitoring system may enable a dose of UV light experienced by a surface in the space to be accurately estimated. The invention can alternatively or additionally provide a mechanism for determining the orientation of a UV light monitor to assist with the optimal placement of the UV light monitor within a space. The orientation is determined based on a comparison between signals received from first and second solar cells that are located on different faces of the UV light monitor.

A method and apparatus for an adaptable vehicle light fixture is provided to activate directional illumination aspects of the light fixture based upon sensed characteristics of the vehicle. The vehicle may automatically sense its position, speed, acceleration, heading and angular velocity and may command the light fixture to emit symmetric and/or asymmetric beam patterns based upon the sensed vehicle characteristics. Directional light incident upon the light fixture may also be detected to allow intensity control thereby reducing glare to oncoming traffic. A vehicle light fixture may be pre-configured with lenses and wirelessly programmed for manual and/or automatic operation that is responsive to the pre-configuration. A plurality of vehicles with light fixtures mounted thereon comprise a network of light fixtures that are manually or adaptively controlled as a group.

The present disclosure relates to a method for photometrical charting of a light source (Q, 3) clamped within a positioning device (1) and stationary relative to an object coordinate system (T) by means of a luminance density measurement camera (4) arranged stationary relative to a world coordinate system (W), wherein the light source (Q, 3) is moved between a first actual measurement position (P1′) and at least one further actual measurement position (P2′ to P5′) along a kinematic chain of the positioning device (1) within the world coordinate system (W), wherein a luminance density measurement image (81 to 85) describing the spatial distribution of a photometric characteristic within a measurement surface is recorded by means of the luminance density measurement camera (4) in each actual measurement position (P1′ to P5′) with the light source (Q, 3) turned on, and wherein the position and/or orientation of the object coordinate system (T) relative to the world coordinate system (W) is recorded in each actual measurement position (P1′ to P5′) in direct reference to the world coordinate system (W) without reference to the kinematic chain of the positioning device (1). Moreover, the present disclosure relates to the use of such a method for photometric charting of a headlight (3).

A measurement apparatus includes a light source that emits light, a spectroscopic element that is configured to transmit light of a predetermined wavelength out of the light emitted from the light source portion, and capable of changing the predetermined wavelength of the light to be transmitted within a predetermined wavelength range, an interference optical system which separates light emitted from the spectroscopic element into measurement light irradiated on a measurement target and reference light reflected by a reference body, and generates interference light obtained by combining the measurement light reflected by the measurement target and the reference light reflected by the reference body, an image sensor that receives the interference light, and one or more processors configured to calculate a position of the measurement target based on spectrum information indicating a change in a received light quantity at the light receiving portion when the predetermined wavelength of the light transmitted through the spectroscopic element is changed.

In one respect, disclosed is a device or system for solar irradiance measurement comprising at least two irradiance sensors deployed outdoors at substantially different angles, such that, by analysis of readings from said irradiance sensors, a direct irradiance, a diffuse irradiance, a global irradiance, and/or a ground-reflected irradiance are determined. In some embodiments the disclosed device or system is stationary and has no moving parts.

A sensor module includes: a sensor carrier for accommodating a sensor; and a housing having two coaxial cylindrical holders in which cylindrical ends of the sensor carrier are mounted to rotate around an axis. The sensor module fixes the sensor carrier in an adjustable angular position relative to the housing by producing a force-fitting or form-fitting connection between the housing and an outer surface region of the sensor carrier.

The present disclosure relates to a light exposure monitoring system that includes a central control server; a plurality of indoor light exposure zones and a positioning system configured to communicate with the central control server to determine: a position (P) of an individual within the plurality of indoor light exposure zones, and a distance between a head of the individual and a floor within the plurality of indoor light exposure zones

A method and apparatus for an adaptable vehicle light fixture is provided to activate directional illumination aspects of the light fixture based upon sensed characteristics of the vehicle. The vehicle may automatically sense its position, speed, acceleration, heading and angular velocity and may command the light fixture to emit symmetric and/or asymmetric beam patterns based upon the sensed vehicle characteristics. Directional light incident upon the light fixture may also be detected to allow intensity control thereby reducing glare to oncoming traffic. A vehicle light fixture may be pre-configured with lenses and wirelessly programmed for manual and/or automatic operation that is responsive to the pre-configuration. A plurality of vehicles with light fixtures mounted thereon comprise a network of light fixtures that are manually or adaptively controlled as a group.