Transmission hologram viewed with laser light.

Transmission hologram viewed with laser light. A helium-neon laser beam is spread out with a x40 microscope objective so that it hits a transmission hologram at 30 deg , enabling people to view the holographic virtual image without having to look directly at the laser. (The holograms were made at this 30 deg angle to help protect people's eyes.) Light shields are also arranged about the set-up to prevent people from sticking their heads into the beam. If a 5 mw laser is used, the hologram will have to be viewed in the dark. If a 15 mw laser is used, the hologram can be viewed with the class lights on.
UCB Index: 
E+20+5
PIRA Index: 
6Q10.10
Demo Diagram: 

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