A Portable Spectrophotometer with Automatic Calibration of Wavelength and Spectral Energy
An automatic calibration and portable technology, applied in the field of optical instruments, can solve the problems of low test accuracy, inability to obtain relative spectral power distribution, color coordinate color temperature, color rendering index parameters, troublesome use, etc., to improve wavelength accuracy and reduce loss , the effect of broad market promotion prospects
Inactive Publication Date: 2014-10-08
HANGZHOU CHNSPEC TECH
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Problems solved by technology
The pointer type needs to manually switch the integration time, which is troublesome to use and has low test accuracy
The digital display illuminance meter has high measurement accuracy, but these two illuminance meters can only display the illuminance value of the test target, and cannot obtain the parameters of relative spectral power distribution, color coordinates, color temperature, and color rendering index
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[0044] The present invention will be described in further detail below with reference to the accompanying drawings.
[0045] Such as figure 1 The shown schematic diagram of the optical path structure of the portable spectrocolor illuminance meter with automatic calibration of wavelength and spectral energy, which includes a cosine corrector 1, and a spherical crown type diffuse transmission sheet with a diameter of 8 mm and a thickness of 1 mm molded with polytetrafluoroethylene; The red, green, and white calibration LED 2 is a low-power LED, and its red chip, green chip, and blue LED chip are integrated and packaged on a substrate, and the blue chip is covered with YAG phosphor and red phosphor; the photocell 3 is a silicon photocell S1133-14, whose spectral sensitivity covers the entire visible wavelength range and is matched to The light collector 4 has a diameter of 15mm and a height of 20mm, and its inner surface is coated with a highly reflective metal film; the coupli...
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The invention discloses a portable light splitting color illuminometer capable of automatically calibrating wavelength and spectral energy. The illuminometer comprises a cosine corrector, a calibrating light-emitting diode (LED) integrating red light, green light and white light, a photo battery, a light collector, a coupling lens, an optical fiber, a flat field concave face diffraction grating, a linear array sensor, a signal processor and a liquid crystal display (LCD) display screen. The portable light splitting color illuminometer aims at measuring illumination and spectral power distribution, color coordinate, color temperature and color rendering index of a light source to be measured on the lighted face. A calibration light source is composed of a red light LED, a green light LED and a white light LED and is used for calibrating wavelength and energy that a linear array sensor corresponds to. A tapered light collector improves signal to noise ratio of the instrument. Light power collected by each pixel of the array sensor is obtained by the multiple linear regression mathematic relation. The portable light splitting color illuminometer is wide in measurement range, high in accuracy and capable of being widely applied to lighting engineering. A measurement method of the portable light splitting color illuminometer capable of automatically calibrating wavelength is further disclosed.
Description
technical field [0001] The invention relates to the technical field of optical instruments, in particular to a portable spectrocolor illuminance meter with automatic calibration of wavelength and spectral energy. Background technique [0002] At present, there are mainly two types of illuminance meters on the market: pointer type and digital display type. The pointer type needs to manually switch the integration time, which is troublesome to use and has low test accuracy. The digital display illuminance meter has high measurement accuracy, but these two illuminance meters can only display the illuminance value of the test target, and cannot obtain the relative spectral power distribution, color coordinates, color temperature, and color rendering index parameters. Contents of the invention [0003] Based on the shortcomings of the above-mentioned prior art, the object of the present invention is to provide a portable spectrocolor illuminance meter with automatic calibratio...
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IPC IPC(8): G01J3/28G01J3/50
Inventor 金尚忠王聪袁琨
Owner HANGZHOU CHNSPEC TECH