Abstract
Although the use of prisms is often avoided because of their aberrations, they are suitable for image-tilt correction. In contradiction to current recommendations, zero astigmatism together with zero coma cannot be achieved at minimum deviation. This paper describes two configurations that meet these conditions. A correction of earlier published third-order formulas is presented and compared to ray-tracing results. The results of the third-order theory are used to develop a model for image-tilt correction, while introducing minimal coma and maintaining a flat image field.
© 1988 Optical Society of America
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