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28 November 2007 Optical design, fabrication and evaluation of optical systems using free-shaped prism
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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.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
H. Ohde and T. Nagata "Optical design, fabrication and evaluation of optical systems using free-shaped prism", Proc. SPIE 6834, Optical Design and Testing III, 68340K (28 November 2007);


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