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26 April 2012 Explication of diffraction lights on an optical imaging system from a Fraunhofer diffraction perspective
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Low-height camera modules are demanded for such applications as cellular phones and vehicles. For designing optical lens, it has widely been recognized that a trade-off exists between reducing the number of lenses and camera resolution. The optical performance of imaging lenses has been improved by diffraction gratings, which have a peculiar inverse dispersion in the wavelength and exhibit the efficacy of correction for chromatic aberration. We can simultaneously reduce the number of lenses and maintain optical resolution using diffraction gratings. However, we have found a generation of striped flare lights under intense light sources that differ from unnecessary order diffraction lights. In this paper, we reveal the generation mechanism of these new striped diffraction lights and suggest a novel structure of diffraction gratings that can decrease them.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Takamasa Ando, Tsuguhiro Korenaga, and Masa-aki Suzuki "Explication of diffraction lights on an optical imaging system from a Fraunhofer diffraction perspective", Proc. SPIE 8429, Optical Modelling and Design II, 842916 (26 April 2012);


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