Optical: systems and elements – Holographic system or element – For synthetically generating a hologram
Patent
1996-12-20
1998-12-15
Spyrou, Cassandra C.
Optical: systems and elements
Holographic system or element
For synthetically generating a hologram
359 15, 359558, G03H 100
Patent
active
058503005
ABSTRACT:
A beam homogenizer that minimizes undesired intensity variations at the output plane caused by sharp breaks between facets in previous embodiments. The homogenizer includes a hologram made up of irregularly patterned diffractive fringes. An input beam illuminates at least part of the hologram. The hologram transmits a portion of the input beam onto an output plane. In doing so, the energy of the input beam is spatially redistributed at the output plane into a homogenized output beam having a preselected spatial energy distribution at the output plane. Thus, the illuminated portion of the output plane has a shape predetermined by the designer of the homogenizer.
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Feldman Michael R.
Kathman Alan D.
Digital Optics Corporation
Jr. John Juba
Spyrou Cassandra C.
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