Non-uniform mask lens

The present invention relates to mask lenses for night vision and optical sighting. More particularly, the present invention relates to a device and method for a non-uniform lens which incorporates geometry for external and internal eye relief compatible with optical sighting and optical correction...

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Main Authors Grove, Corey M, Chase, Stephen E, Hofmann, Jeffrey S
Format Patent
LanguageEnglish
Published 02.07.2002
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Abstract The present invention relates to mask lenses for night vision and optical sighting. More particularly, the present invention relates to a device and method for a non-uniform lens which incorporates geometry for external and internal eye relief compatible with optical sighting and optical correction systems. A device and method for a non-uniform lens which incorporates geometry for external and internal eye relief which meets requirements of optical corrections and optical sighting systems is provided. The geometry of the front and back surfaces of a lens are approximated by curve-fitting polynomials so that the optical correction is included. The non-uniform mask lens can be made of any optical material and can be cast or injection molded.
AbstractList The present invention relates to mask lenses for night vision and optical sighting. More particularly, the present invention relates to a device and method for a non-uniform lens which incorporates geometry for external and internal eye relief compatible with optical sighting and optical correction systems. A device and method for a non-uniform lens which incorporates geometry for external and internal eye relief which meets requirements of optical corrections and optical sighting systems is provided. The geometry of the front and back surfaces of a lens are approximated by curve-fitting polynomials so that the optical correction is included. The non-uniform mask lens can be made of any optical material and can be cast or injection molded.
Author Grove, Corey M
Chase, Stephen E
Hofmann, Jeffrey S
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References Sansalone (5204700) 19930400
Chipman et al. (6000798) 19991200
Jacobs, S.D., et al "MRF: Computer-Controlled Optics Manufacturing", American Ceramic Society Bulletin (Dec. 1999), vol. 78, No. 12.
Grove et al. (6176239) 20010100
Davis et al. (5604547) 19970200
Shillington (5862530) 19990100
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Snippet The present invention relates to mask lenses for night vision and optical sighting. More particularly, the present invention relates to a device and method for...
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Title Non-uniform mask lens
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