Standard Test Method for Measuring Optical Distortion in Transparent Parts Using Grid Line Slope

Published by	Publication Date	Number of Pages
ASTM	05/01/2022	6

Category: ASTM

Description

ASTM F2156 – Standard Test Method for Measuring Optical Distortion in Transparent Parts Using Grid Line Slope

1.1”When an observer looks through an aerospace transparency, relative optical distortion results, specifically in thick, highly angled, multilayered plastic parts. Distortion occurs in all transparencies but is especially critical to aerospace applications such as combat and commercial aircraft windscreens, canopies, or cabin windows. This is especially true during operations such as takeoff, landing, and aerial refueling. It is critical to be able to quantify optical distortion for procurement activities.