A Photometer for Calibrating the AAF Eastman Night Vision Tester

摘要

a. A simple one-brightness-level photometer has been devised which can be used for calibrating the brightness of the AAF Hight Vision Tester.nb. A sufficient number of these instruments will be made so that they can be shipped to the various Fields where night vision testing is performed with the AAF Hight Vision Testers.