FOCUSING LENS SYSTEM
First Claim
Patent Images
1. A lens system, comprising:
- a housing including a first portion and a second portion, wherein the first portion is configured to move relative to the second portion;
a lens coupled to the second portion, wherein the lens includes an annular surface and a void sidewall that define, in cross-section, concave curves; and
a light source coupled to the first portion, wherein the light source is configured to interact with the lens to provide a light beam.
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Accused Products
Abstract
A lens for a flashlight or other lighting unit provides for focusing light from a source, such as an LED, to provide a light beam adjustable between a spot beam and a wide beam. The lens includes a lens body with a front face, a rear LED-receiving well, and a side surface extending between the front face and the rear well. The front face includes a central surface surrounded by an annular concave surface. The rear well includes a space for the LED to be adjusted in position. The rear well space is defined by a concavely-curved sidewall and a concavely-curved base. The concave curvature of the sidewall and base may be Bezier curves.
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Citations
20 Claims
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1. A lens system, comprising:
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a housing including a first portion and a second portion, wherein the first portion is configured to move relative to the second portion; a lens coupled to the second portion, wherein the lens includes an annular surface and a void sidewall that define, in cross-section, concave curves; and a light source coupled to the first portion, wherein the light source is configured to interact with the lens to provide a light beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A lens, comprising:
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a front face having a convex central surface disposed coaxially with an annular surface, wherein the annular surface defines, in cross-section, a concave curve; and a rear face having a light emitting diode (LED) receiving well, wherein the LED receiving well is defined by a well base and a well sidewall, and wherein the well sidewall defines, in cross-section, a concave curve. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification