Beveling Wheel, Method for Forming a Beveled Lens for Use with Eyeglasses and a Beveled Lens
First Claim
1. A prescription plastic lens for use in an eyeglass frame having a receiving channel, the receiving channel defined by opposed interior wall surfaces having a first angle therebetween, the receiving channel having a channel bottom at one end and a channel opening at the other end, the plastic lens comprising:
- a prescription lens body generally defined by a peripheral edge, the peripheral edge having a bevel extending away from the peripheral edge to a vertex, the bevel having a distal portion having a second angle, the bevel being receivable within the receiving channel, at least a portion of the vertex of the bevel having an interference fit with the receiving channel bottom when held within the eyeglass frame, the first angle being greater than the second angle.
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Accused Products
Abstract
The present invention relates to a beveling wheel and method for forming a beveled lens with the beveling wheel for use with eyeglasses. One embodiment includes a prescription lens for use on an eyeglass frame having a receiving channel. The receiving channel includes a channel bottom and opposed interior wall surfaces having a first angle therebetween. The prescription plastic lens includes a prescription lens body generally defined by a peripheral edge having a bevel extending away from the edge to a vertex. The bevel has a distal portion with a second angle. The bevel is receivable within the receiving channel. At least a portion of the vertex of the bevel has an interference fit with the receiving channel bottom when held within the eyeglass frame. The first angle is greater than the second angle.
28 Citations
25 Claims
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1. A prescription plastic lens for use in an eyeglass frame having a receiving channel, the receiving channel defined by opposed interior wall surfaces having a first angle therebetween, the receiving channel having a channel bottom at one end and a channel opening at the other end, the plastic lens comprising:
a prescription lens body generally defined by a peripheral edge, the peripheral edge having a bevel extending away from the peripheral edge to a vertex, the bevel having a distal portion having a second angle, the bevel being receivable within the receiving channel, at least a portion of the vertex of the bevel having an interference fit with the receiving channel bottom when held within the eyeglass frame, the first angle being greater than the second angle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A beveling wheel for use in forming a bevel on a plastic lens for an eyeglass frame having a receiving channel, the bevel having a vertex, the receiving channel being defined by opposed interior wall surfaces having a first angle therebetween at a channel bottom disposed at one end, the beveling wheel comprising:
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an annular disk having a periphery and a central axis; and a bevel groove for use in forming the bevel, the bevel groove disposed on the periphery of the annular disk, the bevel groove having a distal end disposed between the periphery and the central axis, the distal end comprising a second angle less than the first angle such that the vertex contacts the channel bottom. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. The method for forming a beveled lens for use with eyeglasses having a lens retention structure including a bottom capable of cracking a glass lens in contact with the bottom, the method comprising:
shaping a plastic lens blank generally defined by a first peripheral edge, to form a bevel protruding away from a second peripheral edge including a securing structure capable of being in contact with the bottom of the lens retention structure when supported within the lens retention structure. - View Dependent Claims (19, 20, 21, 22)
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23. A beveling wheel for use in forming a bevel on a plastic lens, the beveling wheel comprising:
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an annular disk having a periphery and a central axis; and a bevel groove disposed on the periphery of the annular disk, the bevel groove having a distal end disposed between the periphery and the central axis, the distal end comprising an angle ranging from 108 degrees to 118 degrees. - View Dependent Claims (24)
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25. A prescription plastic lens comprising:
a prescription plastic lens body generally defined by a peripheral edge having a bevel extending away from the peripheral edge to a vertex, the vertex including two sides defining an angle, the angle ranging from 105 degrees to 120 degrees, the bevel has a height between the peripheral edge and where the two sides intersect ranging from 0.28 mm to 1 mm.
Specification