Wide-aperture infrared lenses with hyper-hemispherical fields of

Details Wide-aperture infrared lenses with hyper-hemispherical fields of Wide-aperture infrared lenses with hyper-hemispherical fields of

1993-11-22

1996-03-26

Lerner, Martin

Optical: systems and elements

Having significant infrared or ultraviolet property

Lens, lens system or component

359356, 359762, 359725, G02B 1314, G02B 1306, G02B 962

Patent

active

055025927

ABSTRACT:
Design forms are disclosed for infrared imaging systems that can operate at hyper-hemispherical fields of view (e.g., up to 270.degree.) and at wide relative apertures (e.g., up to f/0.7) to produce images having low distortion--typically no more than 20% greater than the distortion resulting when the image size is proportional to the field angle.

REFERENCES:
patent: 3700312 (1972-10-01), Bertele
patent: 3741630 (1973-01-01), Nakagawa

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