Optical: systems and elements – Compound lens system – Telescope
Reexamination Certificate
2011-04-26
2011-04-26
Consilvio, Mark (Department: 2872)
Optical: systems and elements
Compound lens system
Telescope
C359S364000
Reexamination Certificate
active
07933067
ABSTRACT:
Various embodiments provide a flat field Schmidt-type telescope including a spherical primary mirror, an aspheric correcting plate spaced apart from the primary mirror, a detector disposed between the primary mirror and the corrector plate, and a field lens disposed between the primary mirror and the detector. The field lens is configured to reshape a curved field plane formed by the primary mirror into a flat field plane. A material of the field lens is selected to transmit in the infrared wavelength range (e.g., SWIR and/or MWIR) and is selected to have a desired refractive index so as to achieve a field of view (FOV) of the telescope greater than approximately 10 degrees.
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Consilvio Mark
Pillsbury Winthrop Shaw & Pittman LLP
Raytheon Company
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