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Method for calibrating a spectroradiometer

A technology of radiometers and standard spectra, applied in the field of calibration spectroradiometers, can solve the problems of calibration quality maintenance, error transmission, drop, etc., and achieve cost-effective results

Active Publication Date: 2017-09-26
仪器系统有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the downside is that the quality of the calibration maintains or decreases with the calibration of standardized equipment
If the calibration of the standardization device is incorrect, this error is propagated to the entire device
It is particularly disadvantageous that synchronization can only be ensured at one location, namely where the standardized equipment is located

Method used

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  • Method for calibrating a spectroradiometer
  • Method for calibrating a spectroradiometer
  • Method for calibrating a spectroradiometer

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Embodiment Construction

[0029] figure 1 A spectroradiometer 1 is shown schematically, which comprises a spectrometer 2 and a computing unit 3 connected thereto. The spectrometer 2 measures the spectrum of the light source and provides the wavelength-dependent intensity profile in digital form. The measurement data are passed on to the computing unit 3 . The spectrometer 2 comprises, for example, a dispersive element (typically a grid) which spatially separates the spectral components of the measured radiation, and a CCD element with a plurality of light-sensitive pixels, wherein each pixel is assigned, based on the spatial arrangement, a Certain wavelength ranges. The calculation unit 3 evaluates the spectrum in digital form and calculates photometric and / or chromatic parameters, for example color coordinates x, y, z, from this.

[0030] In order to calibrate the spectroradiometer 1 a standard light source 4 is used according to the invention. The standard light source comprises a light-emitting ...

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Abstract

The invention relates to a method for calibrating a spectroradiometer (1), comprising the following method steps: capture of light measurement data by the measurement of the radiation of at least one standard light source (4) using the spectroradiometer (1) that is to be calibrated; derivation of calibrated data from the light measurement data by the comparison of the captured light measurement data with known data of the standard light source (4); and calibration of the spectroradiometer (1) according to the calibration data. The aim of the invention is to provide a reliable and practical method for calibrating the spectroradiometer (1). In particular, the synchronism of spectroradiometers (1) situated in different locations (9, 10, 11) is to be produced simply and reliably. To achieve this aim, the validity, i.e. the usability, of the standard light source for the calibration is checked by a comparison of the light measurement data of the standard light source (4) with light measurement data of one or more additional standard light sources (4) of the same type, the validity of the standard light source (4) being established if the deviations of the light measurement data of the standard light sources (4) from one another lie below predefined limit values, and / or the standard light source (4) is measured using two or more standard spectroradiometers (1') of the same type or of different types, the validity of the standard light source (4) being established if the deviations of the light measurement data from one another, said data being captured using the different standard spectroradiometers (1'), lie below predefined limit values.

Description

technical field [0001] The present invention relates to a method for calibrating a spectroradiometer (Spektralradiometer), the method has the following method steps: [0002] - receiving light measurement data by measuring the radiation of at least one standard light source by means of a spectroradiometer to be calibrated; [0003] - derivation of calibration data from light measurement data by comparing the received light measurement data with known data of a standard light source; [0004] - calibrating the spectroradiometer according to said calibration data. Background technique [0005] A spectroradiometer is a device for measuring the spectrum of a light source, for example in the visible spectral range, wherein colorimetric and photometric variables are derived from the measured spectral intensity distribution. Spectroradiometers are used to characterize and calibrate light sources for the most diverse applications. Typically, spectroradiometers include spectromete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/10G01J3/52G01J3/28
CPCG01J3/10G01J3/2803G01J3/524G01J2003/282G01J3/505G01J2003/2866G01J3/28G01J3/46
Inventor F·弗兰克R·扬J·雷比格R·黑林
Owner 仪器系统有限公司
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