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US 5,497,294 AGranted
Conspicuity enhancer
AssigneeMinnesota Mining and Manufacturing Company
InventorJohn F. Dreyer, Jr.
Life of this patent
Estimating the term…
Abstract
A conspicuity enhancer includes a case defining an optical cavity having an output optical window. The conspicuity enhancer also includes first and second linear light sources forming a V. Each linear light source has a light emitting device that inserts light into one end of the light source. The other end of each light source is attached to the case such that each linear light source is in optical communication with the optical cavity.
Claims9
A conspicuity enhancer comprising:
- a case defining an optical cavity having an output optical window;
- and
- first and second linear light sources external to said optical cavity, each capable of emitting light along its length, each of said linear light sources having a first end and a second end, each of said light sources having a partially collimated light emitting means for injecting light into said first end whereby most of said light emitted by said linear light sources is visible only to a viewer looking along said length and each of said linear light sources having said second end attached to said case such that said linear light sources are in optical communication with said optical cavity, said linear light sources being positioned so as to form a V.
Dependencies are inferred from the claim text.