Photos of the Day: Small Holographic Projection System
Zoom functions magnify an image to fit on an arbitrarily sized screen, but they typically require complicated lenses and mechanical components. “A zoom lens in general projectors occupies a large area in the systems,” said Tomoyoshi Shimobaba, a professor in the graduate school of engineering at Chiba University in Japan. “If I remove the zoom lens, the system will be small and cost-saving.”
Though the new holographic lensless zoom is not the first lensless zoom system to be developed, Shimobaba notes that other systems require extra components. His team’s system requires only a laser and an LCD panel.
These two still photos show the same holographic image. In the second photo the image has been magnified by the lensless projector. Credit: Tomoyoshi Shimobaba, Chiba University and Michal Makowski, Warsaw University of Technology