Optical: systems and elements – Lens – Afocal
Reexamination Certificate
2006-07-04
2006-07-04
Nguyen, Thong Q (Department: 2872)
Optical: systems and elements
Lens
Afocal
C359S362000, C359S642000, C351S158000
Reexamination Certificate
active
07072124
ABSTRACT:
A magnification loupe carried by spectacles has a Galilean lens system comprising a single-element eyepiece lens and a two-element objective lens. The loupes may be mounted to eyeglass frames by a flip-up mounting member, or they may be mounted through the eyeglass lenses of the spectacles. The loupes provide high magnification while minimizing weight to thereby reduce strain and discomfort to users. In an exemplary embodiment, the objective lens has a non-circular shape that provides a wide field of view while further minimizing the weight of the loupe. A correction lens may be interchangeably coupled to the loupe housing to permit selective replacement with another correction lens to vary the working distance of the loupe.
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Côté Jasmin
Hoffman Jeffrey M.
Shipley Patrick J.
Wilt Brian L.
Kerr Corporation
Nguyen Thong Q
Wood Herron & Evans LLP
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