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Fabrication and Testing of Photonic Thermometers

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Precision color temperature estimation through photonics-enhanced spectroscopic device control.

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Summary

This summary is machine-generated.

The AS7341 sensor accurately estimated correlated color temperature (CCT) in displays. This cost-effective, portable spectrometer is ideal for digital display analysis.

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Area of Science:

Optoelectronics
Spectroscopy
Display Technology

Background:

Accurate color temperature measurement is crucial for display calibration.
Existing spectrometers can be expensive and bulky.
The AS7341 offers a compact, multi-spectral sensing solution.

Purpose of the Study:

To evaluate the AS7341 sensor's efficacy in estimating correlated color temperature (CCT) of digital displays.
To assess the sensor's accuracy and cost-effectiveness compared to industry standards.

Main Methods:

The AS7341 sensor, integrated with an open-source microcontroller, measured spectral response across eight visible channels and NIR.
Calibration was performed using an X-Rite Color Checker chart to capture chromaticity coordinates.
Five different display monitors were evaluated under consistent settings post-calibration.

Main Results:

The MacBook Air M2 (2022) exhibited CCT values closest to predicted standards.
All evaluated devices displayed CCT values within their expected manufacturer ranges.
The AS7341 demonstrated high accuracy in CCT estimation.

Conclusions:

The AS7341 is a highly accurate and cost-effective tool for estimating CCT in digital displays.
Its compact size and portability make it practical for low-cost spectrometer applications.
The sensor provides reliable data for digital display analysis.