A sun exposure sensor for disposable or single use including a substrate having an upper surface and a lower surface; a sun exposure sensing portion disposed on the upper surface of the substrate, the sun exposure sensing portion comprising a fluorescent toner image, wherein the fluorescent toner image increasingly fades upon exposure to sunlight; a sun exposure scale disposed on the upper surface of the substrate, the sun exposure scale comprising an evaluation image for evaluating an amount of fading of the fluorescent toner image; an optional coating layer disposed over all or a portion of the upper surface of the substrate; an optional backing layer disposed over all or a portion of the lower surface of the substrate. A process for preparing the sensor using xerographic toner printing.

A wearable UV sensor includes a UV pass filter; a UV phosphor material; and a visible light sensing device, wherein the UV sensor is configured to receive light including visible light and UV light, wherein the UV pass filter directs the UV light to the UV phosphor material and the UV phosphor material fluoresces visible light in proportion to the UV light from the UV pass filter, and the visible light sensing device measures the visible light fluorescing from the UV phosphor material to determine the amount of the UV light entering the sensor, which correlates to the UV exposure of a subject wearing the UV sensor.

Methods of accurately estimating erythemaly-weighted UV exposure, such as the UV Index, and sensors adapted for the same.

Exemplary aspects of the present invention are directed to an imaging sensor system for beams in the 1-200 nm spectral regions. The system may include a downconverter for converting the beam to visible light, optical filter elements, and relay optics for directing the visible light to the imaging detector. The relay optics convey the image and/or optical beam profile intensity to a 2-D imaging array such as CMOS, CCD (or other imaging detector device). The system can be used in a vacuum or in ambient non-vacuum conditions which may include a purged environment.

Exemplary aspects of the present invention are directed to a sensor that uses the spectral sensitivity of detectors, the spectral properties of optical filters, and mathematical addition and or subtraction to isolate the desired spectral band. The sensor includes a downconverter member for converting the high energy beam to easily detectable visible or NIR light, and optical filter elements and relay optics for directing the visible light to the sensing members. The sensing members transmit an electronic signal proportional to the power of the light in the passband to amplifiers wherein multiple sensing members convey optical power of selected wavelength bands through an amplifier to a microprocessor with an algorithm to determine the power in the desired band of interest and then to a displaying member. The system may be used in a vacuum, in ambient non-vacuum conditions or a purged environment. The techniques described herein can be used across the X-ray, UV, visible, near IR, IR and other electromagnetic regions to isolate desired bands.

The sun safety display and dispenser is a rugged outdoor device designed to measure the direct and scattered UV radiation in the atmosphere; to calculate and display a sun safety awareness index warning of the time to skin burn and or potential damage; to provide a personalized sun safety awareness index reading to help the user determine the appropriate SPF sunscreen, manually or automatically; and, to dispense sunscreen generally or by specific SPF as correlated with the user's personalized sun safety awareness index reading.

For calculating an optical sensor's regular-discharge probability, a light detection system includes the optical sensor, an application voltage generating circuit for applying a drive pulse voltage to the optical sensor, a discharge determining portion for detecting the optical sensor's discharge, a first discharge probability calculating portion, a sensitivity parameter storing portion for storing the optical sensor's sensitivity parameters, and a second discharge probability calculating portion for calculating a discharge probability of the optical sensor's regular discharge. The first discharge probability calculating portion calculates a discharge probability in: a first state in which light from an additional light source having a known light quantity is incident on the optical sensor or the additional light source is turned off; and a second state in which the additional light source's turning-on/turning-off status is different from the first state, with the drive pulse voltage's pulse width being the same as the first state.

There is provided a sterilisation monitoring device for a molecular diagnostics analyser. The device comprises a sensor arranged in use to detect radiation; and an analysis unit connected to the sensor. The analysis unit is arranged in use to issue a signal when the radiation level incident on the sensor is lower than a threshold level.

An excimer bulb assembly including an excimer bulb and a pass filter such that the excimer bulb assembly does not emit substantial UV radiation in wavelengths longer than 231 nm, 232 nm, 233 nm, 234 nm or 235 nm. The wavelengths are measured at an incident angle of zero (0) degrees to the filter plane. The pass filter is preferably constructed of a plurality of layers of hafnium oxide, and most preferably constructed of less than seventy five (75) layers of hafnium oxide. The excimer bulb, pass filter, and two electrical connectors may be adapted to form a cartridge which may be adapted to swivel along its main axis. The cartridge may further include a smart chip. The smart chip may retain and store information regarding the assembly and preferably retains hours of use of the excimer bulb.

An ultraviolet detection material includes a composite oxide including aluminum, strontium, cerium, lanthanum and manganese, and a glass having a softening point of 900° C. or lower. The ultraviolet detection material is not excited by an electromagnetic wave having a wavelength longer than 310 nm and is excited by an electromagnetic wave having a wavelength equal to or shorter than 310 nm, thereby emitting light having a peak of an emission wavelength in 480 nm or longer and 700 nm or shorter.