| US 7,566,141 B2 | ||
| Cassegrain optical configuration to expand high intensity LED flashlight to larger diameter lower intensity beam | ||
| Carl L. C. Kah, Jr., North Palm Beach, Fla. (US) | ||
| Assigned to K-Rain Manufacturing Corporation, Riviera Beach, Fla. (US) | ||
| Filed on May 22, 2006, as Appl. No. 11/438,618. | ||
| Claims priority of provisional application 60/683043, filed on May 20, 2005. | ||
| Prior Publication US 2006/0262524 A1, Nov. 23, 2006 | ||
| Int. Cl. F21L 4/00 (2006.01) | ||
| U.S. Cl. 362—201 [362/191] | 14 Claims |
| 1. A flashlight comprising:
an LED light source;
a lens positioned opposite the LED light source;
a convex mirror positioned substantially in a center of the inner surface of the lens, wherein light from the LED light source
is reflected off the convex mirror back toward the LED light source; and
a concave mirror positioned opposite the convex mirror to reflect the light from the convex mirror as a wide diameter beam
of light out of the flashlight through the lens.
|