[Compensation method of broadband illuminant fluctuation based on spectrum linear fitting]

Area of Science:

• Optical Engineering
• Spectroscopy
• Metrology

Context:

• Broadband illuminants, such as halogen lamps, exhibit fluctuating spectral intensities due to power supply variations.
• Accurate spectral measurements are crucial in various scientific and industrial applications.
• Uncompensated intensity fluctuations can lead to significant errors in spectral analysis.

Purpose:

• To develop and validate a method for compensating spectral intensity fluctuations in broadband illuminants.
• To establish a linear model relating broadband illuminant band intensity to spectral intensity.
• To experimentally verify the effectiveness of the proposed compensation method using a halogen lamp.

Summary:

• A novel method based on spectrum linear fitting is proposed to compensate for fluctuating spectral intensities of broadband illuminants.
• The method leverages the linear relationship between spectral radiant exitance and whole radiant exitance, modeled using a halogen lamp.
• Experimental results demonstrate that the proposed method can compensate spectral intensity fluctuations with high accuracy (within 5% error for 92% of wavelengths).

Impact:

• Enables more reliable and accurate spectral measurements under varying illuminant conditions.
• Provides a practical solution for correcting spectral intensity drift in real-time applications.
• Contributes to advancements in optical sensing, colorimetry, and material analysis.