C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
88/0.21, 204/22.
C25D 11/18 (2006.01) B65D 81/34 (2006.01) C25D 11/12 (2006.01) G01K 11/00 (2006.01) G02B 5/28 (2006.01) H05B 6/64 (2006.01)
Patent
CA 1334055
Optical interference structures incorporating porous films are disclosed. These structures are capable of exhibiting a colour by interference effects caused by the interference of light reflected from various layers within the structure. Basically, the structures comprise a reflective substrate, a porous transparent dielectric film on the substrate and at least one semi-transparent layer supported by the porous dielectric film. The structure is such that there are at least two reflective surfaces separated by an optically thin porous layer of the dielectric film. These structures can be formed by several methods, but the most convenient involves the porous anodization of a substrate metal (e.g. aluminum) to form the dielectric film and the deposition of a semi-transparent metal layer within the pores or on the film surface. The structures can be made inexpensively and are capable of generating strong and, if desired, dichroic colours. The porous nature of the film can also be exploited to create colour shifts. The structures can be used for decorative purposes or to create a wide range of indicators, sensors, security devices and the like.
615000
Jozefowicz Mark Adrian
Rosenfeld Aron Marcus
Jozefowicz Mark Adrian
Kirby Eades Gale Baker
Novelis Inc.
Rosenfeld Aron Marcus
LandOfFree
Optical interference structures incorporating porous films does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical interference structures incorporating porous films, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical interference structures incorporating porous films will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1202105