Laser light beam homogenizer and imaging lidar system incorporat

Details Laser light beam homogenizer and imaging lidar system incorporat Laser light beam homogenizer and imaging lidar system incorporat

1991-08-27

1994-04-12

Henry, Jon W.

Optical: systems and elements

Extended spacing structure for optical elements

359730, 359861, 359862, 359599, 385133, G02B 502, G02B 600, G02B 1700

Patent

active

053030842

ABSTRACT:
A new and improved laser light beam homogenizer for transforming a laser beam with spatially inhomogeneous intensity into a beam with a more nearly spatially uniform intensity pattern is presented. The light beam is diverged by a lens and presented to an integrator. The integrator transforms the beam into a beam with a more uniform illumination. The uniform illumination beam is then impinged on control optics to limit the divergence of the uniform beam and control higher order distortion in the system. This beam may then be illuminated at a predetermined distance by a projecting optic lens. The laser light beam homogenizer of this invention is particularly well suited for use in an imaging lidar system.

REFERENCES:
patent: 3170980 (1965-02-01), Pritchard
patent: 4862257 (1988-07-01), Ulich
patent: 5054869 (1991-10-01), Doyle
patent: 5109465 (1992-04-01), Klopotek
European Search Report P-DSF-206/OEB.

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