Reflecting apparatus including enhanced aluminum optical coatings

1. A reflector lighting apparatus, comprising:

an LED array light source;

a reflector having a aluminum reflecting layer deposited on a base layer; and

a thin-film layered stack positioned directly adjacent the aluminum reflecting layer, wherein the thin-film layered stack includes an even number of layers of 26 or more layers;

the thin-film layered stack comprising:

a first oxide layer deposited on the aluminum reflecting layer;

a second oxide layer deposited on the first oxide layer; and

an alternating plurality of a relatively low refractive index oxide layer material and a relatively high refractive index oxide layer material deposited on the second oxide layer;

wherein the first oxide layer comprises a relatively high refractive index oxide material, and wherein a final layer of the thin-film layered stack comprises a relatively low refractive index oxide material.

2. The apparatus of claim 1 , wherein the relatively high refractive index oxide layer material has a thickness of about 30 nm to about 200 nm, and the relatively low refractive index oxide layer material has a thickness of from 50 nm to 300 nm.