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    Compact, unit magnification, reflective imaging relay using freeform surfaces

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    Author
    Sasian, Jose
    Gao, Weichuan
    Affiliation
    Univ Arizona, Wyant Coll Opt Sci
    Issue Date
    2020-09-07
    Keywords
    reflective optics
    freeform surfaces
    plane symmetry
    unit magnification
    imaging relay
    
    Metadata
    Show full item record
    Publisher
    SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
    Citation
    Sasián, J. M., & Gao, W. (2020). Compact, unit magnification, reflective imaging relay using freeform surfaces. Optical Engineering, 59(9), 095103.
    Journal
    OPTICAL ENGINEERING
    Rights
    © 2020 SPIE.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    We present a design for a unit magnification imaging relay that is compact. The design uses two mirrors, and one is used by light twice for a three-reflection system. The mirrors are specified with freeform surfaces. There are several tradeoffs of performance depending on field of view, F/#, and wavelength range. One example provides a 30-mm circular field of view at F/2.8, and another example provides a circular field of view of 40 mm in diameter at F/4 for a length of similar to 400 mm. Adding a third nearly flat mirror allows a system to provide a 50-mm field of view at F/4 for a length of 420 mm. A last example includes a beam splitter cube to allow accessing the full field of view. These systems are diffraction limited at 550 nm.
    ISSN
    0091-3286
    DOI
    10.1117/1.oe.59.9.095103
    Version
    Final published version
    ae974a485f413a2113503eed53cd6c53
    10.1117/1.oe.59.9.095103
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