Implementation and Use of a Computational Ray-Tracing Program for the Design and Analysis of Complex Optical Systems.

摘要

A new ray-tracing computer program is presented as an analysis and design toll for the development of complex optical systems. The algorithms for the ray-tracing are presented for a wide variety of optical systems surface types. Unique methods for the prediction of two-beam interference patterns are implemented so that amplitude-splitting interferometers can be modeled. Modules for line shape analysis and data storage are also described. This program (DART) is validated using the previously established characteristics of the Middle Ultraviolet Spectral Analysis of Nitrogen Gasses (MUSTANG) instrument, which has a resolution of 10A, an X-axis field-of-view of 1.2 milliradians, a Y-axis field-of-view of 37 milliradians, and 1600 A bandpass. Dart is used to predict the optical characteristics of a new instrument, ISAAC, that is planned for satellite deployment in 1995. The full wavelength range of ISSAC is 1250 A, and the instantaneous band-pass is approximately 250 A. The full wavelength coverage is obtained by rotating a reflection grating in five discreet steps. based on the DART calculations, the resolution of the ISSAC instrument will exceed 1.30 A for all bands, with resolutions as low as 1.06 A at the longer wavelengths. The predicted X-axis field-of-view is 0.5 milliradians and the Y-axis field -of-view is 36 milliradians.