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A photon sieve is a device for focusing light using diffraction and interference. It consists of a flat sheet of material full of pinholes that are arranged in a pattern which is similar to the rings in a Fresnel zone plate, but a sieve brings light to much sharper focus than a zone plate. The sieve concept, first developed in 2001,〔(Sharper images by focusing soft X-rays with photon sieves ), L. Kipp, M. Skibowski, R. L. Johnson, R. Berndt, R. Adelung, S. Harm, and R. Seemann, Nature 414, 184 (2001).〕 is versatile because the characteristics of the focusing behaviour can be altered to suit the application by manufacturing a sieve containing holes of several different sizes and different arrangement of the pattern of holes. Photon sieves have applications to Photolithography.〔(Photon-sieve lithography ), Rajesh Menon and Dario Gil, J. Opt. Soc. Am. A/Vol. 22, No. 2/February 2005〕 and are an alternative to lenses or mirrors in telescopes.〔(Photon sieve telescope: imaging with 10 million pinholes ), Geoff Andersen, 4 September 2006, SPIE Newsroom. DOI: 10.1117/2.1200608.0358〕 ==References== 〔 *(Large optical photon sieve ), Geoff Andersen, OPTICS LETTERS / Vol. 30, No. 22 / November 15, 2005 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Photon sieve」の詳細全文を読む スポンサード リンク
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