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Light baffle attenuation measurements in the visible.

R P Heinisch, C L Jolliffe

|January 30, 2010

Summary

Black paint coatings enhance baffle performance in reducing light scatter, especially at wide viewing angles. Sensor placement within the baffle aperture also impacts light attenuation capabilities.

Area of Science:

Optical engineering
Materials science

Background:

Baffles are crucial optical components for controlling stray light.
Optimizing baffle design is essential for improving image quality in optical systems.

Purpose of the Study:

To evaluate the light-attenuating capabilities of three distinct baffle geometries.
To investigate the influence of sensor location and surface coatings on baffle performance.

Main Methods:

Photometric measurements were employed to quantify light attenuation.
Experiments systematically varied baffle geometry, sensor position, and surface coatings.

Main Results:

Baffle geometry significantly affects light attenuation.
Black paint coatings demonstrated superior performance in reducing light scatter.

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Optimal attenuation was observed at larger viewing angles.

Conclusions:

Surface coatings, particularly black paint, are critical for maximizing baffle light attenuation.
Baffle design and surface treatment are key factors in stray light management for optical systems.