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Automated spectroradiometer applying computer analysis of spectral data.

T Seim, S Prydz

|February 2, 2010

Summary

This summary is machine-generated.

An automated spectroradiometer measures color-vision stimuli and luminescence using a monochromator and computer analysis. This system corrects for stray light and provides precise colorimetric data, enhancing spectral measurements.

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Area of Science:

Optical Physics
Instrumentation Science

Background:

Accurate measurement of light stimuli is crucial for color vision research.
Existing methods for spectral analysis can be limited by noise and instrumental artifacts.

Purpose of the Study:

To develop an automated scanning spectroradiometer for precise measurement of color-vision stimuli and luminescence.
To implement computer-based corrections for instrumental errors and perform colorimetric analyses.

Main Methods:

Construction of an automated scanning spectroradiometer utilizing a Jarrell-Ash Ebert monochromator and photoelectric detection.
Integration of a CDC 3300 computer for data processing, spectral sweep control, and noise reduction.
Development of a novel computer-aided correction method for stray light and grating ghosts.

Main Results:

The spectroradiometer covers a spectral range of 250 nm to 800 nm with a resolution limited by 5-nm integration blocks.
Computer processing allows for signal averaging, smoothing, and correction of spectral data.
The system successfully performs colorimetric analyses, computing dominant wavelength and excitation purity in CIE chromaticity coordinates.

Conclusions:

The developed automated spectroradiometer offers a robust platform for accurate spectral measurements of various light sources and materials.
Computer-based data processing and correction significantly improve the reliability and precision of luminescence and colorimetric measurements.
This instrument facilitates advanced research in color vision and optical material characterization.