ULTRASONIC THIN FILM TAGS

摘要

Ultrasound thin film tags are disclosed. The tags include a pattern of regions, wherein the pattern is configured to create thin film interference when scanned with ultrasound energy. The tags can be placed in various locations within the article including interior surfaces and they can be used to encode a variety of information about the article. Devices and methods for scanning and decoding the tags are also disclosed.

主权项

1. An article comprising:
an exterior surface; an interior surface spaced from the exterior surface; and a tag including a pattern of regions formed on the interior surface, the pattern of regions including:
at least one raised region extending from the interior surface and away from the exterior surface; andat least one lowered region extending from the interior surface towards the exterior surface;wherein the pattern of regions is configured to create thin film interference when scanned with ultrasound energy.