Yasuhisa TAMAGAWA

Information Technology R & D Center, Mitsubishi Electric Corporation, 5-1-1, Ofuna, Kamakura, Kanagawa, 247 Japan

(Received September 9, 1996; Accepted January 10, 1997)

With recent advances in technology, diffractive lenses can be used for a variety of applications. In this paper, the diffractive lenses are treated on an athermal chart which is developed for refractive lenses. An athermalized hybrid single lens designed with the chart, operating in the 3-5 μm wavelength band is presented.

Key words : athermalization, athermal chart, diffractive optical elements