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 Title: |
US4867550:
Toroidal lens for sunglasses
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Jannard, James H.; Laguna Niguel, CA
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| Assignee: |
Oakley, Inc., Irvine, CA
other patents from OAKLEY, INC. (413110) (approx. 160)
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| Published / Filed: |
1989-09-19
/ 1988-02-01
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| Application Number: |
US1988000151173
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| IPC Code: |
Advanced:
A61F 9/02;
G02C 7/02;
G02C 7/10;
G02C 11/08;
IPC-7:
G02C 9/00;
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| ECLA Code: |
G02C11/08; A61F9/02G; G02C7/02; G02C7/10;
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| U.S. Class: |
Current:
351/047;
351/044;
Original:
351/047;
351/044;
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| Field of Search: |
351/044,47,62,103,109,158,159
002/426,429
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| Priority Number: |
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| 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 R1. A cross-section taken along a vertical axis reveals an arcuate configuration through the lens having a radius designated R2. Optimally, R2>/=1.10 R1, 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.
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| Attorney, Agent or Firm: |
Knobbe, Marten, Olson & Bear ;
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| Primary / Asst. Examiners: |
Bovernick, Rodney B.; Dzierzynski, R. M.
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Parent Case: |
BACKGROUND OF THE INVENTION
This application is a continuation-in-part of Ser. No. 893,091, now abandoned filed Aug. 4, 1986, which is a continuation-in-part of Ser. No. 787,242, filed Oct. 15,1985 now U.S. Pat. No. 4,730,915, which is a continuation-in-part of Ser. No. 690,642, filed Jan. 11, 1985, issued June 23, 1987, as U.S. Pat. No. 4,674,851.
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| Family: |
Show 31 known family members
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First Claim:
Show all 13 claims |
What is claimed is:
1. A lens for eyeglasses, said lens adapted for mounting on a wearer by means of an eyeglass frame having a lens receiving portion and a pair of ear stems, said lens being suitable for participation in active sports, such as biking, skiing and the like, said lens comprising:
- a unitary pane having an upper edge and a lower edge, said lower edge having a nose piece opening formed therein for mounting said lens on the nose of the wearer, thereby mounting said lens in cooperation with the eyeglass frame on the head on the wearer, said upper edge of said lens having a generally upwardly arcuate configuration to maximize the surface area of said lens above the eye level of said wearer in order to intercept light rays incident from above,
- said nose piece opening having an upper extremity, the distance separating the upper extremity of the nose piece and the upper edge of the pane being defined as d1, and the distance separating the upper edge of the pane and the lower edge of the pane being defined as d2, wherein d1 is in the range between about 3/4-inch and 11/2 inches, and d2 is in the range from about 13/4 inches to 23/4 inches, said dimensions providing optimum interception of light rays while allowing sufficient ventilation around the face of the wearer while participating in active sports,
- said lens having a first arcuate cross-sectional configuration in a horizontal direction from a first ear stem to a second ear stem, having a radius designated R1, wherein the arc length (L) of said lens is in the range of about 51/2 inches to about 7 inches,
- said lens having a second arcuate cross-sectional configuration in a vertical direction, having a radius designated R2 ; and
- means for mounting said lens on said lens-receiving portion of said frame, wherein R1 2, and R1 is in the range of about 2 inches to about 4 inches.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
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