Acta Optica Sinica, Volume. 31, Issue 10, 1022002(2011)
Relay Lens Design for an LCTF Multi-Spectral Imager
Liquid crystal tunable filter (LCTF) is a powerful dispersive element in multi-spectral imaging. Its physical size, however, exceeds the flange focal distance of general commercial off-the-shelf photographic lenses, which makes it difficult to combine with commercial lenses and cameras directly for multi-spectral imaging applications. A relay lens design working at unit magnification is proposed to accommodate the interface. The spectral range is from 400 nm to 720 nm, and the working F number is 4.5. With the symmetrical design strategy, coma, distortion and lateral color are canceled out automatically. The result satisfies the requirements of multi-spectral imaging. This system is compact and low-cost. It is applicable to the design of a portable multi-spectral imager based on the liquid crystal tunable filter.
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Fu Qiang, Huang Min, Jing Juanjuan, Xiangli Bin. Relay Lens Design for an LCTF Multi-Spectral Imager[J]. Acta Optica Sinica, 2011, 31(10): 1022002
Category: Optical Design and Fabrication
Received: Mar. 10, 2011
Accepted: --
Published Online: Sep. 29, 2011
The Author Email: Qiang Fu (vorQ.Fu@hotmail.com)