Lensless zoom hologram system paves the way for small, low-cost portable projectors
KurzweilAI: "A small holographic projection system with a lensless zoom function has been created by researchers from Japan and Poland.
Imagine giving an important presentation when suddenly the projector fails. You whip out your smartphone, beam your PowerPoint presentation onto the conference-room screen, and are back in business within seconds.
When fully developed, the system should be cheaper and smaller than other projection systems, which typically require expensive, complicated lenses and mechanical components, the researchers report in a paper just published in the Optical Society’s (OSA) journal Optics Express (open access).
The new holographic lensless zoom is not the first lensless zoom system to be developed, but Tomoyoshi Shimobaba, a professor in the graduate school of engineering at Chiba University in Japan, notes that his team’s system requires only a laser and an LCD panel."
