Low weight, achromatic, athermal, long wave infrared objective l

Details Low weight, achromatic, athermal, long wave infrared objective l Low weight, achromatic, athermal, long wave infrared objective l

1995-03-14

1998-04-07

Henry, Jon W.

Optical: systems and elements

Having significant infrared or ultraviolet property

Lens, lens system or component

359 16, 359 19, 359565, 359566, G02B 532, G02B 518, G02B 1314

Patent

active

057371202

ABSTRACT:
A low weight, achromatic, athermal, long wave infrared objective lens with one element having a positive optical power and the other element having a negative optical power but with a higher thermo-optic coefficient than the thermo-optic coefficient of the first element. A diffractive color correcting optical surface is generated on one surface of one of the elements and aspheric surfaces may be included for further performance gains.

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