Gradient-index lens, and method for producing the same

Details Gradient-index lens, and method for producing the same Gradient-index lens, and method for producing the same

2005-06-07

2005-06-07

Epps, Georgia (Department: 2873)

Optical: systems and elements

Lens

With graded refractive index

C359S652000, C359S653000

Reexamination Certificate

active

06903877

ABSTRACT:
A micro prismatic structure is formed inside the light transmission face of a gradient-index lens, in which the projections have a height of at least 0.25 λ and the distance between the neighboring projections is at most λ, based on the applied wavelength λ. Preferably, the micro prismatic structure has conical projection units that are aligned in the light transmission face of the lens in a mode of hexagonal, tetragonal or orthorhombic arrangement. The conical projections may be in any form of circular cones, polygonal cones, flat-headed circular cones (circular cones of which the apex has been cut horizontally) or flat-headed polygonal cones .

REFERENCES:
patent: 4601545 (1986-07-01), Kern
patent: 4810070 (1989-03-01), Suda et al.
patent: 2000-258607 (2000-09-01), None

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