Abstract:
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%.
Abstract:
A system and method are disclosed for detecting open flames in an outdoor environment. Structurally, the outdoor flame detector includes both an ultra-violet (UV) detector and a Radio Frequency (RF) detector. While operating within predetermined parameters, these detectors respectively create an event signal(s) and a cancel signal(s). In detail, the UV detector will output an event signal whenever UV radiation with a fluence above a predetermined value is incident on the UV detector. On the other hand, the RF detector will output a cancel signal whenever it receives an RF component transmitted in an electrical arc discharge having an intensity above a predetermined threshold. The event signal and the cancel signal are then individually and collectively evaluated by a computer to distinguish between an actual open flame and a non-flame event, such as an electric arc discharge (e.g. lightening, electric motors and arc welding).
Abstract:
A welding accessory and a system for detecting thermal and/or UV radiation exposure during welding operations are disclosed. The welding accessory may have a surface exposed to thermal and/or UV radiation generated by electric arc welding, a first image visible without exposure to the thermal and/or UV radiation, and a second image formed from either a UV activated dye that is visible only after exposure to UV radiation generated by the electric welding arc or a thermochromic dye that is visible only after exposure to a predetermined level of thermal radiation generated by the welding arc. A system may include either a thermal or UV exposure indicator with a first state and at least a second state, and include either a thermochromic or UV activated dye adapted to provide a reversible or persistent visual indication upon exposure to radiation. The visual indication may include any combination of symbols, logos, images, text, or other decorative or informational designs as desired.
Abstract:
In embodiments, a control system for a UV air treatment system, especially one used for cleaning a fume stream such as in a kitchen exhaust system, detects a need for cleaning maintenance on the UV light source based on changes in light intensity. The system further detects the light intensity each time the UV light source is cleaned to determine if the drop in intensity after cleaning indicates that the UV light source should be replaced. The cleaning and replacement requirements are indicated automatically by a user interface.
Abstract:
According to the exposure amount evaluation method of the embodiment, a photomask including a long-wavelength light reflective film and a mask pattern is set in an EUV exposure apparatus. The long-wavelength light reflective film reflects long-wavelength light having a wavelength longer than that of EUV light and absorbs the EUV light. The mask pattern is formed by an absorption film which is arranged on the upper side of the long-wavelength light reflective film and absorbs the EUV light and the long-wavelength light. A substrate on which resist is coated are set in the EUV exposure apparatus. Exposure light reflected by the photomask is irradiated to the substrate, and a light amount distribution of the long-wavelength light irradiated to the substrate is measured on the basis of an exposure amount of the exposure light irradiated to the substrate.
Abstract:
Disclosed are methods and apparatus for reflecting, towards a sensor, extreme ultra-violet (EUV) light that is reflected from a target substrate. The system includes a first mirror arranged to receive and reflect the EUV light that is reflected from the target substrate, a second mirror arranged to receive and reflect the EUV light that is reflected by the first mirror, a third mirror arranged to receive and reflect the EUV light that is reflected by the second mirror, and a fourth mirror arranged to receive and reflect the EUV light that is reflected by the third mirror. The first mirror has an aspherical surface. The second, third, and fourth mirrors each have a spherical surface.
Abstract:
A UV exposure dosimetry system includes at least one UV sensor that accurately measures the UV irradiance intensity. The UV dosimetry system integrates the measured UV irradiance intensity over time to calculate the real-time UV dosage and the vitamin D production by taking into account factors comprising 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 also calculates the UV index in real-time, and can crowd source the measured data in a network. The UV dosimetry system supports multi-user control through an advanced and user friendly input and output interface.
Abstract:
A sterilization system consisting of a mobile emitter, a sensing subsystem and a data logging subsystem is described. The emitter has one or more UV emitting lamps or devices. The sensing system comprises at least one remote UV sensor and at least one door sensor. The door sensor comprises a safety shut off door detector and may contain an emergency stop detector and arming detector to protect people from being exposed to UV energy. The system has a remote control for starting, stopping and setting system parameters which include but are not limited to: treatment time, dosage, room size, room number, unit number, floor, facility name, operator name, operator identification number, password, default dosage values, dosage, and patient identification number. The number of treatments per unit of time can be maximized because of the use of incident light measurement.
Abstract:
The invention relates to a container for sunscreen agent in which the sunscreen agent has a specific predetermined sun-protection factor, comprising a sealing device (2) by which the container (1) can be closed to make its opening (8) completely sealed, the container (1) being provided with at least one sun sensor (3) arranged to indicate the current UV intensity by changing its hue depending on the UV intensity of the radiation striking the sensor (3), said container further comprising a colour-reference range (4) for comparative reading of the hue of the sensor to enable the determination of UV intensity, and time indicator (50) for determining the period of time during which a person of a specific skin type can expose his or her skin to solar radiation at said determined UV intensity without sunburn arising, provided said person has applied the sunscreen agent from the container to the skin, said sun sensor (3) being arranged as an integral part of the container (1) and being positioned such that it is completely covered by the sealing device (2) when the sealing device (2) is sealed.
Abstract:
Some embodiments of the present disclosure related to a method to form and operate the reflective surface to compensate for aberration effects on pattern uniformity. In some embodiments, the reflective surface comprises a mirror of within reduction optics of an EUV illumination tool. In some embodiments, the reflective surface comprises a reflective reticle. An EUV reflective surface topography comprising a reflective surface is disposed on a surface of a substrate, and is manipulated by mechanical force or thermal deformation. The substrate includes a plurality of cavities, where each cavity is coupled to a deformation element configured to expand a volume of the cavity and consequently deform a portion of the reflective surface above each cavity, for local control of the reflective surface through thermal deformation of a resistive material subject to an electric current, or mechanical deformation due to pressurized gas within the cavity or a piezoelectric effect.