A UV exposure dosimetry system includes at least one UV sensor that measures the UV irradiance intensity. The system can generate extrapolated UV intensity data based on measured UV intensity data to correct unreliable UV measurement due to inconsistent irradiation of UV light. The system integrates the extrapolated UV intensity data over time to calculate real-time UV dosage and vitamin D production by taking into account factors including UV sensor location, body surface area, clothing coverage, and sunscreen usage. Based on the measurement, the system can predict the time remaining to skin burn and the time remaining to reach daily goal of vitamin D production. The system is also adapted to measure sun exposure time based on the corrected UV intensity over a period of time. The UV dosimetry system supports multi-user control through an advanced and user friendly input and output interface.

Various embodiments of the disclosure relate to a device and method of controlling an optical sensor module in an electronic device. The electronic device includes: a housing: a display disposed in an internal space of the housing to be at least partly visible from outside through the housing and including a plurality of signal lines; an optical sensor module disposed in the internal space below the display and overlapping the display, and including a first light emitting element overlapping a first signal line of the display, a second light emitting element overlapping a second signal line different from the first signal line of the display, and a light receiving element configured to collect light from the first light emitting element and/or the second light emitting element that is reflected and received from an external object; and a processor operatively connected to the display and the optical sensor module. The processor is configured to control the first light emitting element based on an off-time point of time of the first signal line corresponding to brightness of the display such that the first light emitting element emits light at a first light-emitting point of time, and to control the second light emitting element based on a time difference between off-time points of time of the first signal line and the second signal line such that the second light emitting element emits light at a second light-emitting point of time different from the first light-emitting point of time.

Manufacturing opto-electronic modules (1) includes providing a substrate wafer (PW) on which detecting members (D) are arranged; providing a spacer wafer (SW); providing an optics wafer (OW), the optics wafer comprising transparent portions (t) transparent for light generally detectable by the detecting members and at least one blocking portion (b) for substantially attenuating or blocking incident light generally detectable by the detecting members; and preparing a wafer stack (2) in which the spacer wafer (SW) is arranged between the substrate wafer (PW) and the optics wafer (OW) such that the detecting members (D) are arranged between the substrate wafer and the optics wafer. Emission members (E) for emitting light generally detectable by the detecting members (D) can be arranged on the substrate wafer (PW). Single modules (1) can be obtained by separating the wafer stack (2) into separate modules.

Various embodiments of a light detection device and a method of using such device are disclosed. In one or more embodiments, the light detection device can include a housing including a top surface and a bottom surface, where the housing extends along a housing axis between the top surface and the bottom surface; and a support member connected to the housing and adapted to be selectively moved from a closed position to an open position. The support member is further adapted to maintain the light detection device in an upright position when the bottom surface and the support member are in contact with a working surface and the support member is in the open position.

Various embodiments of a light detection device and a method of using the device are disclosed. In one or more embodiments, the light detection device can include a housing that extends along a housing axis between top and bottom surfaces. The device can also include a port that is adapted to receive a sample, and a door connected to the housing. The door can include an actuator portion adapted to selectively move the door between a closed position and an open position, and a cover portion connected to the actuator portion and adapted to close the port when the door is in the closed position and open the port when the door is in the open position to allow external access to the port.

A system, apparatus and method of improved measurement of the SPF factor of sunscreen compositions. In one embodiment, a method of measuring the protection of a sunscreen composition includes exposing skin to a known intensity of light, measuring the amount of remitted light from the skin, applying sunscreen to the skin, exposing the skin to which the sunscreen has been applied the known intensity of emitted light of the spectrum of light from which the sunscreen is intended to protect the skin, measuring the amount of light remitted from the skin, and calculating a UltraViolet-A Protection Factor (UVA-PF) of the sunscreen by comparing the amount of light remitted from the skin with the sunscreen to the amount of light remitted from the skin without the sunscreen.

A light sensor includes a light sensing element, a first integrator and a sigma-delta analog-to-digital converter. The light sensing element senses light during a measurement period to generate a first current. The first integrator is coupled to the light sensing element and configured to receive the first current and generates a first integration signal. The sigma-delta analog-to-digital converter is coupled to the first integrator and used to convert the first integration signal to a sensing value.

The present disclosure relates, according to some embodiments, to a wearable UV sensor for detecting a dose of an electromagnetic radiation, the wearable UV sensor comprising: (a) a polymer substrate comprising at least one polymer and at least one UV radiation exposure indicator; and (b) an adhesive, wherein exposure of the wearable UV sensor to the dose of the electromagnetic radiation produces a photochromic change in the polymer substrate. The present disclosure also relates to a method for determining a magnitude of a dose of UV radiation exposure, the method comprising: providing a wearable UV sensor comprising a polymer substrate, a UV radiation exposure indicator, and optionally an adhesive layer; exposing the wearable UV sensor to at least one dose of an electromagnetic radiation to form an irradiated wearable UV sensor, wherein the exposing results in a photochromic change by the wearable UV sensor; and determining the magnitude of the at least one dose of electromagnetic radiation.

According to an embodiment, an electronic device may include: a display, an optical sensor disposed in a rear surface of the display and overlapping the display, the optical sensor including a light emitting unit including light emitting circuitry and a light receiving unit including light receiving circuitry, a processor operatively connected with the display and the optical sensor, and a memory operatively connected with the processor, wherein the memory may store instructions which, when executed, cause the processor to: obtain position information of a first area corresponding to the light emitting unit of the optical sensor in the display, and based on the light emitting unit of the optical sensor radiating light, output a visual object in the first area and/or an area adjacent to the first area on the display.

A proximity sensing device includes: a light source, a sensing unit, a light guide unit, and a window. The light source emits light, which is guided by the light guide unit to the window. The emitted light reflected by an object is received by the same window. The light guide unit includes a partial-transmissive-partial-reflective (PTPR) optical element, whereby the light emitted from the light source is reflected by the PTPR optical element, while the light reflected by the object passes through the PTPR optical element. There is only one window required.