2780 results about "Emission spectrum" patented technology

A light emitting device includes a light emitting component having an active layer of a semiconductor and a phosphor capable of absorbing a part of light emitted from the light emitting component and emitting light of wavelength different from that of the absorbed light, wherein the light emitting component is a LED which has an active layer constituting a gallium nitride based semiconductor containing Indium and is capable of emitting a blue color light with a peak wavelength within the range from 420 to 490 nm. The phosphor is a garnet fluorescent material activated with cerium which is capable of absorbing a part of the blue color light and thereby emitting light having a broad emission spectrum with a peak wavelength existing around the range from 510 to 600 nm and a tail continuing into the region from 700 to 750 nm.

A system and method for detecting an analyte of interest in a sample is provided. The method includes passing a set of ions obtained from the sample through an ion mobility spectrometer to filter out ions that are not ions of interest and to generate an ion mobility spectrum. A mass spectrum of at least some of the ions is generated using a mass spectrometer. The method also includes determining that the analyte of interest is in the sample when peaks of interest are found in one or more of the ion mobility spectrum and the mass spectrum, and the peaks of interest follow a predetermined pattern of peaks associated with the analyte of interest or are confirmed by ion mobility spectrometry.

A color OLED device is described having one or more pixels, at least one pixel comprising: four or more light-emitting elements, each light-emitting element comprising one or more layers of electroluminescent organic material producing a broadband light having a variable frequency-dependent luminous efficacy emission spectrum, and each light-emitting element further comprising a filter for filtering the broadband light and emitting a different color of light; wherein the different colors of light emitted by three of the light-emitting elements specify a first color gamut of the OLED device, and an additional one or more of the light-emitting elements emit at least one additional different color of light and wherein the frequency range of the filter of the additional light emitting element is matched to a portion of the broadband light frequency range having a radiant intensity greater than the radiant intensity of the frequency range of at least one of the filters of the three light-emitting elements specifying the first color gamut of the OLED device, and the additional one or more light emitting elements having luminous efficiency greater than that of at least one of the three light emitting elements specifying the first color gamut.

A lighting apparatus for emitting white light including a semiconductor light source emitting radiation with a peak at from about 250 nm to about 500 nm; a first phosphor having a peak emission between about 450 and 550 nm; and a second phosphor having a peak emission between about 615 and 670 nm; wherein the overall emission spectrum of the lighting apparatus has a depression between about 550 and 615 nm, said depression extending to between about 5% and 25% of the highest intensity of the emission spectrum of the lighting apparatus in the region from 400 to 700 nm. In this apparatus, the red-green color contrast is increased versus the referent illuminant.