23 August 1996 Wide-field aspheric optics for visual applications
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Aspheric surfaces provide a very necessary increase in the number of degrees of freedom needed to design wide-field eyepieces with large eye relief distance to focal length ratios. New economical diamond-turning lathes such as the Optoform 50 give a new flexibility to prototype manufacture with plastic materials which extends into medium-sized production quantities. This paper will explore the free use of aspherical surfaces in wide-field visual systems. The aspheric is now the general case and not a small modification of a spherical surface. The computing procedures used must provide the best balance between freedom and restraint.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael H. Freeman, Michael H. Freeman, } "Wide-field aspheric optics for visual applications", Proc. SPIE 2774, Design and Engineering of Optical Systems, (23 August 1996); doi: 10.1117/12.246693; https://doi.org/10.1117/12.246693


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