Patent ID: 6353576
Filing Date: 2002-03-05
Classification: G03H,Y10S

Abstract:
An ultrasonic hologram detector apparatus comprising:(a) a rigid housing component describing a cavity defined by a floor component composed of rigid polymeric material having an upper surface forming a first plane and lower surface forming a parallel second plane, and rigid side elements attached to the base, wherein the, cavity defines an enclosed space of a dimension of the upper surface of the floor component and the rigid side elements of from about 1 cm to about 5 cm in height, wherein the distance between the upper surface and the lower surface of the floor component is from about 5 mm to about 7.5 mm; (b) a layer of detection fluid contained with the cavity, wherein the detection fluid has a thickness from about 0.2 mm to about 0.5 mm; wherein the detection fluid has a surface tension of from about 12 dynes/cm to about 19 dynes/cm, wherein the detection fluid has a Kinematic viscosity of from about 1 cs to about 20 cs; and (c) an inert gas filling a space in the cavity above the detection fluid.