Study on design of controllable particle display using water drops suitable for light environment

Controllable particle display has been proposed, that controls the position and blinking patterns to yield a visual representation and the representation to touch these particles. Additionally, as an example of its implementation, a controllable particle display using water drops as the particles was proposed. In this system, objects are represented by projecting images upward onto falling water drops designed to form a plane surface, depending on the positions of the water drops. However, this method has a problem in terms of the brightness of the object. In this paper, we propose a method by which images are projected onto falling water drops at an angle, and users observe the images from in front of a projector.