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Proceedings Paper • Open Access • new

A new method to decide the practical feature of Fresnel lens from the result of ultra-high refractive index method (Conference Presentation)
Author(s): Masato Shibuya; Takashi Hiramatsu; Keisuke Araki; Suezou Nakadate; Junki Fujii

Paper Abstract

We propose a new method to decide the brazed feature of Fresnel lens from the result of high refractive index method. Traditionally the feature has been designed to satisfy the phase-difference function for a point object by having brazed surface relieves only on one side of the lens. Therefore the exit ray of the practical feature is different from that of high-index method even for this point object. Thus the aberration is changed. To solve this problem, we propose Fresnel lens having brazed feature on both sides. Studying the spherical Fresnel lens which collects sun light, we theoretically show how to decide the shape. Also by practical lens designing, we demonstrate the validity of our theory. The proposed method is useful to decide the brazed feature of Fresnel lens from the result of high refractive index method, especially for small view angle lenses.

Paper Details

Date Published: 13 December 2016
PDF: 1 pages
Proc. SPIE 9947, Current Developments in Lens Design and Optical Engineering XVII, 994705 (13 December 2016); doi: 10.1117/12.2237246
Show Author Affiliations
Masato Shibuya, Tokyo Polytechnic Univ. (Japan)
Takashi Hiramatsu, Tokyo Polytechnic Univ. (Japan)
Fuji Xerox Co., Ltd. (Japan)
Keisuke Araki, Utsunomiya Univ. (Japan)
Canon Inc. (Japan)
Suezou Nakadate, Tokyo Polytechnic Univ. (Japan)
Junki Fujii, Tokyo Polytechnic Univ (Japan)


Published in SPIE Proceedings Vol. 9947:
Current Developments in Lens Design and Optical Engineering XVII
R. Barry Johnson; Virendra N. Mahajan; Simon Thibault, Editor(s)

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A new method to decide the practical feature of Fresnel lens from the result of ultra-high refractive index method (Conference Presentation)



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