Abstract

Most optical systems are generally used in normal conditions, that means, in normal temperature and pressure. But some optical systems, for example, those specially used in remote satellite or in aerospace, may be affected by the thermal effects caused by the environmental temperature variation. Some deviations will take place in the refractive indices, curvatures, element thicknesses and airspaces of these systems due to the great variation and difference in temperature, pressure and radiation, and certainly the image quality of the systems will be also not as good as that before. Therefore, when we design these systems, the most important thing is to eliminate the thermal effects caused by the environmental temperature.

© 1998 Optical Society of America