Devices and methods for detecting a disinfecting state are described. An example of a sensor device is disclosed to include: a housing; a radiation sensitive material disposed on one or more portions of an external surface of the housing; a sensor configured to measure intensity information associated with ultraviolet (UV) radiation of a first frequency band; a controller configured to record the intensity information, temporal information associated with measuring the intensity information, or both; and a transceiver device configured to transmit and receive radio frequency (RF) signals.

A system (5) for quantifying a colour change in a colorimetric indicator (15), the system (5) comprises an image capture device (22) configured to acquire an image of an object (10) comprising the colorimetric indicator (15); and a processing device (20) configured to compare the acquired image to reference data (30) associated with the colourimetric indicator (15), and generate a quantitative output (28) associated with the acquired image.

An optical detector module can be used to implement proximity sensing function by detecting ambient light outside of the optical detector module in accordance with a first detection threshold. An optical detector module can be further used to implement other active functions such as material detection (e.g., skin) or depth-sensing by emitting one or more optical signals (e.g., light pulses at a specific wavelength) and detecting the reflected optical signals relative to a second and/or third detection threshold. The disclosure provides technical solutions for actively monitoring detection threshold(s) of an optical detector module to achieve better power management. In some embodiments, such solutions are useful for photodetectors having a wide sensing bandwidth, such as a photodetector formed in germanium or a photodetector comprising an absorption region comprising germanium.

An object is a sunlight information provision system that allows a user to easily obtain more detailed sunlight information. A storage unit that stores date-and-time information, location information, and sunlight intensity information that is information regarding sunlight intensity at date and time indicated by the date-and-time information and location indicated by the location information in association with each other; a date-and-time information acquisition unit that acquires the date-and-time information; a location information acquisition unit that acquires the location information; a direction information acquisition unit that acquires the direction information; a first calculation unit that calculates the sunlight intensity information associated with sunlight inquiry information including the date-and-time information acquired by the date-and-time information acquisition unit, the location information acquired by the location information acquisition unit, and the direction information acquired by the direction information acquisition unit; a second calculation unit that calculates direction-specific sunlight intensity information by using a result of calculation of the first calculation unit; and a presentation unit that presents the direction-specific sunlight intensity information calculated by the second calculation unit to a user.

A method includes sensing data indicative of a plurality of wavelengths of light utilizing one or more sensors forming a part of a sensor ring, storing the data on a memory device forming a part of the sensor ring, transmitting the data to a computing device external to the ring and receiving a photic environmental model from the computing device the photic environmental model based, at least in part, on the data.

An optoelectronic sensing device may include an optoelectronic detection device configured to detect light and provide an electrical signal as a function of detected light. The device may further include a signal detection device configured to store at least one signal value of the electrical signal in a memory during a time interval of repeating time intervals and to output an indication signal after the time interval has elapsed.

Disclosed herein are systems, apparatuses, methods, and non-transitory computer readable media related to controlling tint of tintable window(s) that include various predictive modules, and quality assurance related modules.

Methods and systems for controlling tintable windows based on cloud detection.

Method, product and blocking element of short wavelengths in LED-type light sources consisting of a substrate with a pigment distributed on its surface and, in that said pigment has an optical density such that it allows the selective absorption of short wavelengths between 380 nm and 500 nm in a range between 1 and 99%.

The present invention relates to alternative equipment for solar energy prospecting with a focus on low cost, low complexity in installation, operation and maintenance, and high reliability. A low-cost solarimetric station consists of compact equipment capable of providing global irradiance measurements and estimates for direct and diffuse components, as well as hemispheric photographs, with acceptable levels of uncertainty. The pyranometer periodically provides global irradiance information to the system, and the camera records photos of the sky. Using machine learning algorithms, and based on that information, the equipment provides estimates for direct and diffuse irradiance components. The equipment has other meteorological sensors, GPS, and wireless communication facilities. The equipment has an energy supply and management system consisting of a photovoltaic module, charge controller, and battery, which provide the energy necessary for the station to operate.