Four-layer antireflection coating for deposition in in-like DC s

Details Four-layer antireflection coating for deposition in in-like DC s Four-layer antireflection coating for deposition in in-like DC s

1993-12-10

1995-09-12

Lerner, Martin

Optical: systems and elements

Light interference

Produced by coating or lamina

359586, 359588, G02B 528

Patent

active

054502381

ABSTRACT:
An antireflection coating for a substrate including four layers and having optimized photopic reflectance and optimized for deposition by sputtering. The first layer (the layer farthest from the substrate) has a refractive index less than the refractive index of the substrate and a thickness of about one-quarter wavelength. The second layer (the layer adjacent the first layer) has an refractive index greater than about 2.2 and a thickness of about a half wavelength. The third layer has refractive index less than that of the second layer. The fourth layer (the layer adjacent the substrate) has a refractive index less than about 2.0 and greater than that of the third layer. The combined thickness of the third and fourth layers is less than about a quarter wavelength. The first and third layers may include silicon dioxide. The second layer may include titanium dioxide or niobium oxide. The fourth layer may include indium oxide, tin oxide, indium tin oxide, or zinc oxide.

REFERENCES:
patent: 2478385 (1949-08-01), Gaiser
patent: 3185020 (1965-05-01), Thelen
patent: 3432225 (1969-05-01), Rock
patent: 3565509 (1971-02-01), Sulzbach
patent: 3781090 (1973-12-01), Sumita
patent: 3804491 (1974-04-01), Morokuma et al.
patent: 3829197 (1974-08-01), Thelen
patent: 3858965 (1975-01-01), Sumita
patent: 4264133 (1981-04-01), Sakurai
patent: 4387960 (1983-06-01), Tani
patent: 5105310 (1992-04-01), Dickey
patent: 5170291 (1992-12-01), Szczyrbowski et al.
patent: 5270858 (1993-12-01), Dickey
Lockhart et al., "Three Layered Reflection Reducing Coatings," J. Opt. Soc. Am., 37, 9, pp. 689-694, (1947).
L. I. Epstein, "The Design of Optical Fibers," J. Opto. Soc. Am., 42, pp. 806-810, (1952).

Affiliated with

Also associated with

Rating

Four-layer antireflection coating for deposition in in-like DC s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Four-layer antireflection coating for deposition in in-like DC s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Four-layer antireflection coating for deposition in in-like DC s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-409683