Antireflection structure

Details Antireflection structure Antireflection structure

2007-11-20

2007-11-20

Watkins, III, William P. (Department: 1772)

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

C428S156000, C428S212000, C428S220000, C428S913000, C313S461000, C313S478000, C313S479000, C359S601000, C359S613000, C359S614000, C359S609000, C359S566000, C359S569000, C359S570000, C359S574000, C359S580000, C359S582000, C359S577000

Reexamination Certificate

active

10368494

ABSTRACT:
An antireflection structure (10) comprises a base (1), and a finely roughened antireflection part (2) formed in a surface of the base (1). The finely roughened antireflection part (2) includes a plurality of projections and depressions defined by the projections. The projections are distributed such that PMAX≦λMIN, where PMAXis the biggest one of distances between tips (2t) of the adjacent projections and λMINis the shortest one of wavelengths of visible light rays in a vacuum. The sectional area of each projection in a plane parallel to the surface of the base (1) increases continuously from the tip (2t) toward the bottom (2b) of the depression adjacent to the projection. The shape (2Mt) of a tip part (Mt) of each projection in a plane perpendicular to the surface of the base (1) is sharper than the shape (2Mb) of a bottom part (Mb) of each depression in the same plane vertical to the surface of the base (1).

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