Optical: systems and elements – Lens – With graded refractive index
Patent
1998-07-20
1999-09-14
Epps, Georgia
Optical: systems and elements
Lens
With graded refractive index
359652, 359654, 359668, 359669, 61 37, 61 38, 61 39, 61 41, G20B 300
Patent
active
059531622
ABSTRACT:
A segmented GRIN anamorphic lens and a lens array using such lenses are provided. The lens has an optical axis and is composed of a plurality of segments. The interfaces between the segments are planes or wedges inclined at an angle to the optical axis. At least one segment has a predetermined axial index of refraction profile while the other segment may have either a predetermined homogeneous index of refraction or a predetermined radial index of refraction profile. The planar interface geometry and the index of refraction profiles are chosen to provide lenses with desirable optical properties. Spherical and cylindrical aberrations can be reduced or eliminated by appropriate choice of the index of refraction profile. The front and rear surfaces of the lens assembly can also be ground and polished into spherical shapes which act with the axial gradient interface to yield an anamorphic lens functionality.
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Epps Georgia
Mitchell Steven
Spector David N.
LandOfFree
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