CDRH ? on rear projection
Hello All,
Am not new to the laser hobby...just now starting to explore possibillity of small side-line business.
I have one of the original Gamma-XL projector systems( with blanking ). Up to this point I have only used as in-home unit...NO public displays. Projector is coupled to a 120mw DPSS@ 532.
I have read and re-read the CDRH documment on Laser Display...Wow...
Very detailed !!! But I cannot understand the rulings.
My question is this : If a local retailler wanted to lease my equiptment for use as a rear projector of scrolling text ( Reverse image ) message in his front store glass window...is a variance needed ???? The beam path would be terminated at the glass window pane by a translucent sheet of 1/8 lexan plastic placed INSIDE the window. The unit would only be energized AFTER the store was closed...so NO possibillity of the public comming in contact with the beam/display. The unit would be turned off prior to the store opening up in the morning.
Is this considered "public display" ??? The translucent boundry plane breaks up the beam path.....to a " fuzzy " output on the side opposite
the beam strike area...therefore, no coherent optical output.
Anyone try this B4 ??? The one area of the CDRH document that I surly
understand is the 30K fine for violation !!!!! I know this project is " small potatoes "...but...its a start...and when the Blue DI diode gets to a reasonable $...I'd like to be able to fund a RGB project with profit from previous purchases !!! It would also be a great thing to make a small profit while attempting to satisfy the complusive need for coherent light !!
Thanks in advance !!!
The Quantum well is deep, Photons for All !!!