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14 May 2010 Applications of the SMS method to the design of compact optics
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New ultra-thin optical designs are presented that comprise discontinuous optical sections (called channels) working in parallel (multichanneling) to provide the desired optical function. Aplanatic (a particular case of SMS-design) multichannel designs are also shown and used to explain more easily the design procedure. Typically, these multichannel devices are at least formed by three optical surfaces: one of them has discontinuities in the shape, a second one may have discontinuities in its derivative while the third one is smooth. The number of discontinuities is the same in the two first surfaces: Each channel is defined by the smooth surfaces in between the discontinuities, so that the surfaces forming each separate channel are all smooth. No diffractive effects are considered.
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Juan C. Miñano, Pablo Benítez, Jiayao Liu, José Infante, Julio Chaves, and Lin Wang "Applications of the SMS method to the design of compact optics", Proc. SPIE 7717, Optical Modelling and Design, 77170I (14 May 2010);

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