Theodore T Joshua

US Patent:

20020196626, Dec 26, 2002

Filed:

Jun 21, 2001

Appl. No.:

09/681893

Inventors:

Bernard Petrillo - Rye NY, US
Bruno Israel - Kinderhook NY, US
Theodore Joshua - Pemberton NJ, US

International Classification:

F21V001/00

US Classification:

362/286000, 362/386000, 362/276000

Abstract:

An array of photo detectors or a ground glass is employed in concert with a beam-forming reflector to generate a positional error(s) as the light source is displaced from a reference location in the vertical plane. The beam is formed by means of a small hole through the reflector on its optical axis. These error signals are interpreted visually or introduced into electronic servo loops to mechanically drive the lamp assembly to an on-axis reference location. Provision is made to move the reflector along the optical axis to achieve co alignment of the reflected image of the arc source with its direct image.