A light intensity detection method includes: determining whether light intensity detection needs to be performed; detecting whether there is a finger touch in an optical detection region of an optical fingerprint sensor if light intensity detection needs to be performed, wherein the optical detection region is located in at least one part of a display region of a display; enabling a light intensity detection function if no finger touch is detected, and collecting light intensity data by using the optical fingerprint sensor; and processing the collected light intensity data, and calculating a value of current ambient light intensity according to the light intensity data.

A monitoring device 100 for agricultural use comprising a housing 12 adapted to accommodate at least a solar radiation sensor positioned in the top portion of the housing 12, the housing 12 comprising an aperture at the top end 18 adapted to allow the solar radiation sensor to be exposed through the aperture. The housing is attached to a hanger 22 located at the same level or below the top end 18 of the housing 12 and adapted to hang the housing 12 on a hanging element such as a cable. The housing 12 may further comprises a leveling component 34 for leveling the solar radiation sensor or the entire monitoring device 100. The monitoring device 100 optionally comprises a shading sleeve 48 compatible with passing the hanging element through the monitoring device 100.

The present invention achieves a multiple-optical-axis photoelectric sensor which can be assembled with reduced effort. A multiple-optical-axis photoelectric sensor (100) includes a light projector (110) and a light receiver (120) each having an outer shape defined by a housing (1) including: an outer case (10); a light-transmitting plate (15); and a pressing member (20). Supporting parts (11b) are provided at respective inner surfaces of side plates of the outer case. Extending parts (11c) are provided at end parts of the corresponding side plates. The pressing member is configured to press the light-transmitting plate against the supporting parts by being attached to the respective extending parts.

An optocoupler is provided and which includes a side-emitting electromagnetic radiation source configured to emit electromagnetic radiation at a side wall, and an electromagnetic radiation detector configured to detect at least part of the emitted electromagnetic radiation.

A device for detecting light intensity, a display screen and a mobile terminal are provided. The device for detecting light intensity includes a controller, and a first photosensitive sensor and a second photosensitive sensor which are electrically coupled to the controller, the first photosensitive sensor and the second photosensitive sensor being spaced apart and located in a same illumination environment, and the controller is configured to, when an external beam illuminates the first photosensitive sensor, perform calculation based on a difference value between illumination parameters of the first photosensitive sensor and the second photosensitive sensor to obtain a light intensity of the external beam.

An optical sensor assembly is provided. The optical sensor assembly includes a circuit board, an optical sensor positioned on the circuit board, and a front cover attached to the circuit board and covering the optical sensor. The front cover includes an optical element configured to guide or condense an incident light of a predetermined wavelength onto the optical sensor. The front cover is made of polypropylene or polyethylene. The predetermined wavelength is in a range from 8 micrometers to 12 micrometers.

Aspects and examples described herein provide a lightweight radiation shielding structure for infrared cameras. In one example, a top radiation shielding element and a bottom radiation shielding element are placed as close as possible to an infrared detector to minimize excess weight added to the infrared camera while providing optimal radiation shielding. Such aspects and examples provide important functionality for numerous weight-sensitive applications in high-radiation environments.

This disclosure is directed to devices, systems, and methods for skin damage protection and detection, including providing images and recommendations and images to users to assist them with proper application of an applied-to-skin sunscreen. Disclosed devices include personal user devices that are operable to emit ultraviolet light and to measure the degree of ultraviolet light reflected from skin, upon which images can be presented on a device screen to give visual indications of sunscreen coverage and/or skin aging. Measured ultraviolet images and visible light images can further be presented to device users in an overlay, side-by-side, or other fashion, to further assist in detection of sunscreen coverage and/or degrees of skin damage. Further, the user of the device may be able to view real-time video in the same ultraviolet/visible light overlay fashion, and assess the state of photo-protective effects of an applied-to-skin sunscreen.

A lens module includes a base and a filter. The base includes a through hole and a first thread. The through hole is surrounded by an inner surface of the base. The first thread is formed on the inner surface. The filter includes a sidewall and a second thread forming on the sidewall. The filter is received in the through hole, the second thread is engaged with the first thread. The disclosure also provides an electronic device having the lens module.

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.