Patent ID: 8328367
Filing Date: 2012-12-11
Classification: G03B

Abstract:
1. A projection system for projecting upon an upper surface of liquid, comprising: an agitation assembly selectively operable to agitate a portion of the upper surface of liquid to form a projection screen; and a projector assembly projecting light onto the projection screen on the upper surface of the liquid, wherein the liquid is at least translucent to light and wherein the projection screen on the upper surface reflects a portion of the projected light, wherein the agitation assembly comprises an aeration system including a manifold with outlets discharging gas into the liquid, wherein the manifold is positioned a depth below the upper surface of the liquid, wherein liquid is contained in an open container that includes a first sidewall and a second sidewall, and wherein the distribution manifold includes a first header with gas outlets mounted on the first sidewall and a second header with gas outlets mounted on the second sidewall, whereby a projection screen with one or two spaced apart surfaces is formed in an upper surface of the volume of the liquid received in the open container via rising gas bubbles.