Al-Ni-Cr alloy ingots contains 0.25, 0.5, 0.99, 1.98 at.% of Ni-Cr were prepared by melting together of high purity wire aluminium , powder of nickel and very small pieces of chromium in an electric furnace at 800 oC under a pure argon atmosphere. Specimens Al and Al-Ni-Cr alloys were annealed at 560 oC for 1300 hr, and rapid quenched in water. Nanofilms prepared with thicknesses 8, 15, 25 nm of Al and Al-Ni-Cr alloys were deposited by thermal evaporation technique under vacuum of 10-5 mbar onto glass substrate temperature 298 K and rate of deposition 0.2 nm/sec. The crystallite size of such nanofilms were measured using AFM images and found to be ranged of 4.754 -10.204 nm and roughness ranged of 0.538-2.65nm. The measured transmittance values increases with decreasing thickness with the range of 90-94% at 8 nm. The optical band gaps calculated decreases with increasing concentration of Ni-Cr .