US Patent:
20110173822, Jul 21, 2011
Inventors:
Brian W. Cranton - Sanbornton NH, US
Steven E. Morin - Nottingham NH, US
Steven E. Dolbec - Nashua NH, US
Matthew Tapley - Manchester NH, US
International Classification:
G01M 11/04
G01B 11/26
F41G 1/00
Abstract:
An optical bench configured to hold two or more sources of collimated light utilizes prisms that when rotated generate rings of possible angular directions of light that overlap at one or more locations at which the two or more beams are coaligned.