The History of OSA
Profile in Optics: Leonard Thompson Troland
Leonard Troland was a polymath in vision and colorimetry whose life was tragically cut short.
Leonard Thompson Troland
Leonard Thompson Troland was not one of the 30 charter members who had founded the Optical Society in New York in late 1916. But his name is listed as member number 31 in the first OSA directory, which was printed in 1917. By late 1917, he was already on the OSA Council and was chairman of the first colorimetry committee. From 1922 to 1923, he was president of the Society. He even has a unit of measurement named for him in visual science—the Troland (Td). It is a gauge of the intensity of light falling on a square millimeter of the retina.
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