Michael Luther Oldham
Engineers at Hancock Dr, Boulder, CO
License number
Colorado 20048
Issued Date
Nov 22, 1982
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
4730 Hancock Dr, Boulder, CO 80303
Professional information
Circuit Pack With Light Pipes
US Patent:
5481440, Jan 2, 1996
Filed:
Dec 27, 1993
Appl. No.:
8/173594
Inventors:
Michael L. Oldham - Boulder CO
Gerald L. Buxton - Thornton CO
Gerald L. Buxton - Thornton CO
Assignee:
AT&T Corp. - Murray Hill NJ
International Classification:
F21V 800
US Classification:
362 32
Abstract:
A circuit pack has a flat circuit board and a flat apertured face plate mounted at substantially right angles to the board. A plurality of light emitting diodes are surface mounted on the board and emit light at an angle to the axis of the apertures in the face plate. Mounted in each of the apertures is a light guiding member, one end of which overlies the corresponding diode and has a reflecting surface positioned in the path of light emitted from the diode to redirect the light through the aperture. Crush ribs on the surface of the light guiding member to aid in affixing it in the aperture.