8 results about "Light characteristic" patented technology

The invention relates to a lighting device (1) for emitting light in a predetermined direction of emission, comprising several light sources (2) which have different emission characteristics in the predetermined emission direction, a rangefinder (3) designed to detect the distance between the lighting device (1) and an object (4) located in the predetermined direction of emission, and A control unit (5) is configured to automatically activate a light source (2) or a combination of light sources (2) based on the detected distance. In this way, a lighting device (1) is provided that enables a demand-based and user-independent selection of suitable light characteristics, thereby ensuring improved visibility, increased ease of use, and more efficient energy consumption.

The utility model discloses a device for time-sharing direct detection of transmission light characteristics of a plurality of liquid samples, which comprises a light source, a photoelectric detector, a converter light guide device, a sample light guide device, a sample station, a sample upper platform and a sample lower platform, and the sample light guide device is arranged on the upper side and the lower side of the sample upper platform and the sample lower platform. The sample station is installed between the sample upper platform and the sample lower platform, the converter light guide device is installed on the outer side of the sample light guide device, and the photoelectric detector and the light source are arranged on the outer side of the converter light guide device. And meanwhile, the problem of inconsistent measurement conditions caused by changing the bending degree of the optical fiber is avoided, so that efficient, stable and accurate time-sharing detection of multiple samples is realized, the application range of multi-sample transmission characteristic measurement is greatly widened, and the measurement efficiency and stability are improved.

A system and method for obtaining light distribution information for a physical space, the system may include a camera for capturing a video feed of a physical space. The system may include a 3D model of the physical space and a Bidirectional Reflectance Distribution Function (BRDF) look-up table. The system may include an electronic processor configured to: map the video feed to the 3D model to form a real-time 3D model of the physical space, extract light properties associated with materials, apertures, and emissive light sources in the physical space from the real-time 3D model using the BRDF look-up table. The system may include a ray tracing algorithm for identifying a location of a light source, determining an angle of reflection from the light source on a surface within the physical space, determining a viewer position within the physical space, and determining a light characteristic at the viewer position from the light source.

The application discloses a kind of magnetic material defect detection systems based on image recognition, using first acquisition module, first determination module, second determination module, second acquisition module and third acquisition module, first acquisition module is used to adopt polarized light imaging device to carry out multi-angle light illumination control to the surface of magnetic material, by adjusting polaroid angle and light source incidence angle, specular reflection generated by suppressing strong light characteristic, obtain the original image data with uniform illumination distribution, if it is detected that there is overexposure area in image, then automatically adjust exposure parameter and polarization angle, obtain the high-quality image suitable for subsequent processing;First determination module is used to carry out multi-scale wavelet transform decomposition according to the high-quality image obtained, identify surface defect area by analyzing the texture features and edge information in different frequency components, if wavelet coefficient exceeds preset threshold in high-frequency component, then it is judged as potential defect area.The detection performance of the application is significantly improved.

The method of measuring a light characteristic of a display device includes: measuring the light characteristic of a measurement target area of the display device using a measurement device having a higher resolution than a resolution of the display device; determining an appropriate window for the target area; repeatedly changing a position of the appropriate window within the target area; calculating, for each position of the appropriate window, an average value of light characteristics within the appropriate window; and averaging the plurality of average values of the light characteristics within the appropriate window, and determining an average light characteristic value of the measurement target region.

A light characteristic of one or more luminaires can be controlled by periodically obtaining a target correlated color temperature (CCT) for a given time of day at the luminaires' location and obtaining a type identifier for each luminaire. The identifier can include information such as model number, serial number, manufacturer, digital-communication data, RFID tag data, QR-code data or user input. A profile for each luminaire is selected from multiple stored profiles based on its type identifier and power-supply settings generated for the DC power supplies powering each luminaire's light emitters using the target CCT and corresponding profile information. The generated power-supply settings are then sent to the respective DC power supplies.

The application discloses an unmanned ship dynamic light correction method and system based on a residual diffusion model, which comprises the following steps: first, an unmanned ship dynamic light correction method based on a residual diffusion model is provided, which comprises the following steps: S1, acquiring unmanned ship navigation images and light condition data thereof; S2, extracting light characteristics by using a light perception module; S3, performing light correction based on a residual diffusion model, specifically comprising the following two processing steps: a forward diffusion process: simulating dynamic distribution of light interference; a reverse diffusion process: gradually removing light interference to generate a corrected image; and S4, outputting the corrected image for target identification and path planning of the unmanned ship; second, an unmanned ship dynamic light correction system based on a residual diffusion model is provided, which comprises the following modules: a data acquisition module, a light perception module, a residual diffusion light correction module and an output and application module; and the application has the advantages that the light perception module and the residual diffusion correction model are introduced, and the definition and detail visibility are improved.

The invention provides an illumination system based on human factor illumination and a method thereof. The system comprises a lighting device and a first light sensor. The first light sensor receives a preset human factor illumination curve. The preset human factor illumination curve records the target light characteristics of the light at each time point. The first light sensor detects the light characteristic of the indoor environment light at the current time point, and compares the light characteristic of the indoor environment light with the target light characteristic of the corresponding time point of the preset human factor illumination curve to obtain a first difference value. The first light sensor transmits a dimming signal to the lighting device according to the first difference value so as to adjust the light of the lighting device until the first light sensor judges that the light characteristic of the indoor environment light is substantially equal to the target light characteristic of the corresponding time point of the preset human factor lighting curve.