Toroidal lens for sunglasses

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With antiglare or shading

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

351 44, G02C 900

Patent

active

048675504

ABSTRACT:
Disclosed is a toroidal lens for use in a pair of sunglasses, comprising a unitary pane of transparent material which is curved about each of two substantially perpendicular axes, each having a substantially constant radius such that the lens defines a portion of the surface of a toroid. A cross-section taken along the horizontal axis of the lens reveals an arcuate configuration which may be characterized as having a rfadius R.sub.1. A cross-section taken along a vertical axis reveals an arcuate configuration through the lens having a radius designated R.sub.2. Optimally, R.sub.2 .gtoreq.1.10 R.sub.1, and the length of the lens along the horizontal arcuate cross-section is in the range of from about 51/2 inches to about 7 inches. The lens may have either a uniform thickness throughout, or may taper from a greater thickness in a region centered about the midpoint, generally above the nose of a wearer, to a lesser thickness near the peripheral ends of the lens.

REFERENCES:
patent: 145288 (1846-07-01), Di Cicco
patent: 163869 (1851-07-01), Hinman
patent: 176316 (1855-12-01), Fleming
patent: 178178 (1856-07-01), Fleming
patent: 187394 (1860-03-01), Moeller
patent: 199150 (1864-09-01), Carmichael
patent: 210048 (1868-01-01), Imperatrice
patent: 268683 (1883-04-01), Tenny
patent: 285020 (1886-09-01), Schmidthaler
patent: 2444498 (1948-07-01), Cochran
patent: 2472731 (1949-06-01), Splaine
patent: 2482664 (1949-09-01), Gagnon
patent: 2582345 (1952-01-01), Moeller
patent: 3133982 (1964-05-01), Janz
patent: 3233249 (1966-02-01), Baratelli et al.
patent: 3233250 (1966-02-01), Jonassen
patent: 3531189 (1970-09-01), Petito
patent: 3689136 (1972-09-01), Atamian
patent: 3708224 (1973-01-01), Linblom
patent: 3756704 (1973-09-01), Marks
patent: 4515448 (1985-05-01), Tackles
patent: 4564272 (1986-01-01), Kan
Picture of Oakley Blades as First Worn 8/27/85.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Toroidal lens for sunglasses does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Toroidal lens for sunglasses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Toroidal lens for sunglasses will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-364859

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.