Optics: measuring and testing – Photometers – Photoelectric
Patent
1992-05-21
1994-07-12
Warden, Robert J.
Optics: measuring and testing
Photometers
Photoelectric
356222, 356225, 356234, 359856, 359857, G01J 142
Patent
active
053293509
ABSTRACT:
An optical system for the attenuation of laser light for measurement purposes which includes four logical subassemblies including a first attenuator subassembly for the attenuation of high power laser light, a second attenuator subassembly for lower power attenuation of the laser light, a third lens subassembly for collecting beam size data simultaneously at multiple locations in space, and a fourth logical subassembly including a beam measuring assembly for recording the beam size data received from the lens subassembly for analysis of the beam characteristics. The first attenuator subassembly is provided with a pair of reflecting, opposed facing, fixed wedges. The reflecting wedges are selectively tilted to eliminate interference effects between their inward facing reflecting surfaces. The second attenuator subassembly further includes a pair of opposed facing and movable wedges arranged in series with a fixed filter. The lens subassembly includes a positive optical lens for focusing the beam into a series of beam splitters which redirect the beam data for simultaneous collection on a beam measuring assembly. The beam measuring assembly preferably also includes a fixed filter disposed in front of the light collection surface.
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Fleischer John M.
Wright David L.
Feix Thomas Carl
Photon, Inc.
Thornton Krisanne M.
Warden Robert J.
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