Patent ID: 8878145

Claim:
A fluorescence spectral measurement and fluorescence color measurement apparatus comprising: a spectrometer for measuring the fluorescence spectrum of a sample: a dual integrating sphere measurement arrangement that is configured to house a sample, provide ultraviolet radiation on the sample, collect fluorescent light from the sample, and transmit the fluorescent light to the spectrometer; the spectrometer is configured to separate the fluorescent light into a spectrum, convert the spectrum into digital signals, and send the digital signals to a computer; the computer is configured to calculate measurement parameters of the sample, control the spectrometer, calculate the fluorescence spectrum of the sample and calculate the fluorescence color of the sample; said dual integrating sphere measurement arrangement includes: a sample integrating sphere that is configured to provide a diffuse white measuring environment for the sample, which sample integrating sphere has a bottom, an internal area, an ultraviolet emission source, and an open area; a measurement integrating sphere with at least one lens system port, a light port, an internal area, an open area, and a top; a sample platform connecting the measurement integrating sphere to the sample integrating sphere, the sample platform having an upper surface, a bottom surface, and a middle, the sample platform contains a round hole called a measurement aperture; a measurement aperture set on the sample platform, the measurement aperture filter is configured to accommodate the sample; a lens system attached to the measurement integrating sphere and configured to receive fluorescent light from the sample; an ultraviolet emission source that is retained on the top of the sample integrating sphere to provide ultraviolet radiation; said ultraviolet emission source is installed on the top of the sample integrating sphere to provide ultraviolet radiation on the sample; the ultraviolet emission source is selected from at least one of an ultraviolet lamp, an ultraviolet fluorescence lamp, an arc lamp, a filtered arc lamp, an ultraviolet laser, and a light emitting diode (LED); and said ultraviolet emission source is connected to a group of electronic circuits selected from at least one of a current limiting resistor in series, a voltage converter, a voltage regulator, a current regulator, and a voltage divider.