A unique mirror surface profile has been developed to produce annular, radial, or circular images of uniform intensity from incident radiation of non-uniform illumination. The design principles are ideally suited for industrial high power laser applications as well as for concentrator/integrator mirrors in the Abbe type condenser systems. The reflective surface is a series of segmented conical flats tangent to a discontinuous base aspheric. Each conical segment of specified width redirects the input light to a common image. The net contribution from all of the segments is a highly uniform intensity integrated image. The design procedure is represented in three stages, (1) optimizing the curvature and aspheric coefficients of the base curve; (2) calculating the point of tangency and width of each conical segment; (3) shifting the coordinate system to obtain the required annular or radial image dimensions. To facilitate the design, a semi-automatic computer program was written since commercially available optical design software does not handle discontinuous surfaces. Three examples of mirror designs will be presented.

Date Published: 26 October 1983
PDF: 9 pages
Proc. SPIE 0399, Optical System Design, Analysis, and Production, (26 October 1983); doi: 10.1117/12.935440

Published in SPIE Proceedings Vol. 0399:
Optical System Design, Analysis, and Production
Robert E. Fischer; Philip J. Rogers, Editor(s)