Dual aperture multispectral Schmidt objective

Details Dual aperture multispectral Schmidt objective Dual aperture multispectral Schmidt objective

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nasa.reptq....m&link_type=abstract

Patent National Aeronautics and Space Administration. Goddard Space Flight Center, Greenbelt, MD.

Physics

Mapping, Mirrors, Multispectral Band Scanners, Schmidt Telescopes, Spaceborne Telescopes, Beam Splitters, Focal Plane Devices, High Resolution, Optical Properties, Patents, Photometers

Scientific paper

A dual aperture, off-axis catadioptic Schmidt objective is described. It is formed by symmetrically aligning two pairs of Schmidt objectives on opposite sides of a common plane (x,z). Each objective has a spherical primary mirror with a spherical focal plane and center of curvature aligned along an optic axis laterally spaced apart from the common plane. A multiprism beamsplitter with buried dichroic layers and a convex entrance and concave exit surfaces optically concentric to the center of curvature may be positioned at the focal plane. The primary mirrors of each objective may be connected rigidly together and may have equal or unequal focal lengths.

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