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Proceedings Paper

Over-designed and under-performing: design and analysis of a freeform prism via careful use of orthogonal surface descriptions
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Paper Abstract

In this paper, two freeform prism combiner designs with different geometries were studied. The first design, whose geometry is driven by the need for total-internal-refraction, achieves optical performance suitable for use in AR/VR applications, but involves highly complex surfaces and highly non-uniform performance. The second design, which removes the total-internal-refraction requirement, adopts a modified geometry which enables significantly improved aberration correction potential. The nodal-aberration-theory based design process is shown for both prism designs, and the optical performance of each design was analyzed. Performance exceeds 10% MTF at 50lp/mm over centered and decentered 3mm effective subpupils, evaluated at nine different positions within an 8mm diameter eyebox.

Paper Details

Date Published: 21 May 2018
PDF: 11 pages
Proc. SPIE 10676, Digital Optics for Immersive Displays, 1067616 (21 May 2018); doi: 10.1117/12.2315641
Show Author Affiliations
Nicholas Takaki, The Institute of Optics, Univ. of Rochester (United States)
Wanyue Song, The Institute of Optics, Univ. of Rochester (United States)
Anthony J. Yee, The Institute of Optics, Univ. of Rochester (United States)
Julie Bentley, The Institute of Optics, Univ. of Rochester (United States)
Duncan Moore, The Institute of Optics, Univ. of Rochester (United States)
Jannick P. Rolland, The Institute of Optics, Univ. of Rochester (United States)


Published in SPIE Proceedings Vol. 10676:
Digital Optics for Immersive Displays
Bernard C. Kress; Wolfgang Osten; Hagen Stolle, Editor(s)

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