Patent ID: 8570837

Claim:
A backing absorber for use with an ultrasonic transducer, comprising: a first elemental multilayer having at least one homogeneous metal layer and at least one adhesive layer; and a second elemental multilayer having at least one homogeneous metal layer and at least one adhesive layer, wherein one of said at least one homogeneous metal layer and said at least one adhesive layer of said second multilayer is bonded to the other of said at least one homogeneous metal layer and said at least one adhesive layer of said first multilayer, wherein a planar surface of said backing absorber is adapted to be coupled to a corresponding planar surface of a vibrating layer of said ultrasonic transducer, wherein said plurality of elemental multilayers are effective to dampen ultrasonic signals emitted by said vibrating layer when said backing absorber is coupled to said vibrating layer, and wherein each elemental multilayer further includes a polymer layer.