Physical
Optics Corporation (POC) developed a new technology for manufacturing
passive optical components that can perform spectral and angular
redistribution of energy carried by wavefronts of coherent and partially
coherent radiation. These components are fabricated using holographic
techniques involving laser recording of submicron diffraction and
interference patterns in photosensitive materials. Their design
includes features based on statistical properties of radiation.
In particular, this technology provided a foundation for a family
of Passive Light-Shaping Elements (PLSE) which can be mass-replicated
at low cost. These components have been a gateway for POC's entry
into the lighting and nondestructive evaluation (NDE) markets. They
have also found important applications in high power laser optics,
countermeasures, and optical sensing. PLSEs allow to achieve energy
efficient, angularly limited, fully homogenous outputs from nonuniform
distributed light sources. They have been found critical for aircraft
inspection lighting. This is because currently 80% of all aircraft
are inspected visually with special handheld flashlights, which
produce irregular illumination, with multiple dark/ bright spots.
This leads to frequent inspection errors because the user has to
repeatedly scan the beam to make out details. POC's PLSE dramatically
improves output beam quality, eliminating glare and hot spots entirely.
These advantages of PLSE products were confirmed by an extensive
field study performed in collaboration with Ross Aviation, Albuquerque,
NM, and Mesa Airlines, Farmington, NM, with the participation of
inspectors from the American Airlines Maintenance and Engineering
Center in Tulsa, OK, and the Air Transport Association Nondestructive
Testing Forum. These tests demonstrated that these POC products
strongly improve inspection accuracy, which is critical for national
security and transportation safety. This project made an important
contribution to POC development of mass-production capabilities
in holography, and to commercialization of products now in use on
military bases and by many customers around the world.
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