206 results about "Visible spectral range" patented technology

A corrosion and ultra violet-resistant silver mirror for use in solar reflectors; the silver layer having a film-forming protective polymer bonded thereto, and a protective shield overlay comprising a transparent multipolymer film that incorporates a UV absorber. The corrosion and ultraviolet resistant silver mirror retains spectral hemispherical reflectance and high optical clarity throughout the UV and visible spectrum when used in solar reflectors.

The presence detector has a passive infrared sensor for detecting the presence of persons in a room, an image sensor operating in the visible spectral range and an electronic evaluator for the evaluation of signals from these sensors. The signal from the passive infrared sensor is used to actuate the image sensor and, if necessary, to switch on the room lighting. Once activated, the image sensor is used to detect both movement and occupancy of a space being monitored. Application of the presence detector for the "on-demand" activation and / or control of conditioning facilities of a room, wherein the signals of both sensors are used for the control of the conditioning facility.

A broadly tunable single-mode infrared laser source based on semiconductor lasers. The laser source has two parts: an array of closely-spaced DFB QCLs (or other semiconductor lasers) and a controller that can switch each of the individual lasers in the array on and off, set current for each of the lasers and, and control the temperature of the lasers in the array. The device can be used in portable broadband sensors to simultaneously detect a large number of compounds including chemical and biological agents. A microelectronic controller is combined with an array of individually-addressed DFB QCLs with slightly different DFB grating periods fabricated on the same broadband (or multiple wavelengths) QCL material. This allows building a compact source providing narrow-line broadly-tunable coherent radiation in the Infrared or Terahertz spectral range (as well as in the Ultraviolet and Visible spectral ranges, using semiconductor lasers with different active region design). The performance (tuning range, line width, power level) is comparable to that of external grating tunable semiconductor lasers, but the proposed design is much smaller and much easier to manufacture.

This invention enables the full-body (throughout the entire thickness) scribing of a plate made of fragile material such as glass by irradiating the work with the laser beam for heating with or without cooling and thereby generating the tensile thermal stress in the work which exceeds the cleavage toughness of the material, dispensing with the mechanical breaking. In this invention, the absorption of the beam in the work is so controlled that the beam, while being absorbed in it, is either transmitted through it or reaches the adequate thickness of the work and the entire thickness scribing is realized. This absorption control is done by selecting the laser beam wavelength so as to achieve the proper absorption in the absorption spectra of the material either due to the electronic transition or the lattice vibration. The doping of the material, in which the commercially available high power laser beam can be absorbed properly and either of the absorption or emission in the visible light spectral range does not exist, can also be utilized for this absorption control. In this case, the quenching of the fluorescence which may arise after the beam absorption is useful. This invention enables the profile scribing of work or the selective scribing of piled work consisting of plural number of plates.

Disclosed is a sensor array (3, 28) with a number of sensors (17, 18, 19, 20) arranged in periodic groups (21, 29, 30) for detection of electro-magnetic radiation, including sensors (17) of a first type for detection of radiation in an infrared spectral range and sensors (18, 19, 20) of at least a second type for detection of light in a visible spectral range. In each group (21, 29, 30) the number of sensors (17) of the first type exceeds the number of sensors (18, 19, 20) of the second type. Also disclosed is a camera (2) with such a sensor array (3, 28) as well as an image reproduction system (1) with such a camera (2) and a vehicle with such an image reproduction system (1).

The present invention relates to an optical lens having a lens element produced of plastic, more particularly of plastic which is transparent in a visible spectral range, and having a coating comprising a plurality of layers, the plurality of layers comprising at least one high-refractive-index layer. Furthermore, a hardcoat layer is formed adjacent to the lens element, and a superhydrophobic layer concludes the coating in opposition to the lens element. The at least one high-refractive-index layer has a thickness of less than 40 nm, and the coating overall has a thickness of more than about 380 nm.

The invention relates to a light-emitting component, in particular organic light-emitting diode, having an electrode and a counterelectrode and an organic region—arranged between the electrode and the counterelectrode—with a light-emitting organic region, which comprises an emission layer and a further emission layer and which, upon application of an electrical voltage to the electrode and the counterelectrode, is formed in a manner emitting light in a plurality of colour ranges in the visible spectral range, optionally through to white light, in which case the emission layer comprises a fluorescent emitter which emits light predominantly in the blue or in the blue-green spectral range; the further emission layer comprises one or a plurality of phosphorescent emitters emitting light predominantly in the non-blue spectral range; a triplet energy for an energy level of a triplet state of the fluorescent emitter in the emission layer is greater than a triplet energy for an energy level of a triplet state of the phosphorescent emitter in the further emission layer; and an at least 5% proportion of the light generated in the light-emitting organic region is formed in the visible spectral range as fluorescent light from singlet states of the fluorescent emitter in the emission layer.

A solid state light emitting device comprises one or more active layers comprising semiconductor nano-particles in a host matrix, e.g. silicon nano-particles in silicon dioxide or silicon nitride. The incorporation of carbon in the active layers provides a great improvement in performance through shortened decay time and enhance emission spectra, as well as reliability and lifetime. The emission wavelengths from the nano-particles can be made to correspond to the quantization energy of the semiconductor nano-particles, which allows the entire visible range of the spectrum be covered. Ideally an engineered structure of alternating active and buffer material layers are disposed between AC or DC electrodes, which generate an electric field. The buffer layers are comprised of a wide bandgap semiconductor or dielectric material, and are designed with a thickness, in the direction of an applied electric field, that ensures that electrons passing therethrough picks up enough energy to excite the nano-particles in the adjacent active layer at a sufficient excitation energy to emit light efficiently at a desired wavelength.

The invention relates to a nanostructured product with a structurally coloured surface. The structurally coloured surface is obtained by providing a nanostructured surface on a substrate which may be a plastic material, and by providing a covering metal layer on the nanostructured surface. The metal layer generates broad band absorbance of light in a visible spectral range so that the structurally coloured surface appears dark, e.g. appears to have a grey or black colour.

The invention relates to a light-emitting component, in particular organic light-emitting diode, having an electrode and a counterelectrode and an organic region—arranged between the electrode and the counterelectrode—with a light-emitting organic region, which comprises an emission layer and a further emission layer and which, upon application of an electrical voltage to the electrode and the counterelectrode, is formed in a manner emitting light in a plurality of colour ranges in the visible spectral range, optionally through to white light, in which case the emission layer comprises a fluorescent emitter which emits light predominantly in the blue or in the blue-green spectral range; the further emission layer comprises one or a plurality of phosphorescent emitters emitting light predominantly in the non-blue spectral range; a triplet energy for an energy level of a triplet state of the fluorescent emitter in the emission layer is greater than a triplet energy for an energy level of a triplet state of the phosphorescent emitter in the further emission layer; and an at least 5% proportion of the light generated in the light-emitting organic region is formed in the visible spectral range as fluorescent light from singlet states of the fluorescent emitter in the emission layer.