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Proceedings Paper

Optical design, fabrication, and evaluation of optical systems using free-shaped prism
Author(s): H. Ohde; T. Nagata
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Paper Abstract

Free-shaped optical systems can highly correct aberrations by reflecting light at multiple aspherical surfaces inside a prism and can realize more-compact, higher-performance optical systems than is normally achievable. We have exploited these features at Olympus to construct optics for display systems and image-capturing modules in mobile phone cameras. In the course of their development, we improved the accuracy of the finished form of free-shaped prisms by establishing a design methodology for free-shaped optical systems and developing high-precision fabrication and measurement techniques. In this paper, we describe the structure and characteristics of an optical system for an image-capturing module, as well as evaluation results of a prototype that we fabricated.

Paper Details

Date Published: 28 November 2007
PDF: 11 pages
Proc. SPIE 6834, Optical Design and Testing III, 68340K (28 November 2007); doi: 10.1117/12.757395
Show Author Affiliations
H. Ohde, Olympus Corp. (Japan)
T. Nagata, Olympus Corp. (Japan)


Published in SPIE Proceedings Vol. 6834:
Optical Design and Testing III
Yongtian Wang; Theo T. Tschudi; Jannick P. Rolland; Kimio Tatsuno, Editor(s)

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