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Proceedings Paper

Lens Design Program
Author(s): Ian Powell
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Paper Abstract

An optical design and analysis program structured for operation on a mini-computer has been developed at NRC (National Research Council of Canada). It has been designed to be used interactively giving the user both flexibility and ease of operation. The computer on which it runs at present is a Digital PDP11 with a memory of around 28K, and this represents a great saving in computer costs when compared to those of a large computer upon which most lens design work is carried out. This program has capabilities for optimizing a lens system, for pupil exploration, for fitting the computed wavefront aberration to a polynomial and for evaluating the diffraction optical transfer function. Although only 10 finite rays are traced in the optimization routine, the aberrations computed, together with the Seidel aberrations obtained from the paraxial ray trace, provide the user with adequate control of the aberrations over both aperture and field. A Double Gauss and a Maksutov-Cassegrain system are used as practical examples to illustrate this.

Paper Details

Date Published: 1 December 1978
PDF: 8 pages
Proc. SPIE 0147, Computer-Aided Optical Design, (1 December 1978); doi: 10.1117/12.956620
Show Author Affiliations
Ian Powell, National Research Council (Canada)


Published in SPIE Proceedings Vol. 0147:
Computer-Aided Optical Design
Robert E. Fischer, Editor(s)

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