new diffuser tested

Another cloudy night...

I tested the new diffuser for the light box tonight. Success!

The new deck for the light box is a regular sheet of glass. But to the glass, I have applied a sheet of Con-Tact Brand decorative covering or self-adhesive plastic film. Sourced at Canadian Tire, it is the "Frosty" type with a frosted grid pattern (18" x 9' roll). Typically, this is used as a privacy screen on, say, a bathroom window. Actually, I applied two sheets: one to the top side of the glass; and one to the bottom.

It works perfectly!

It diffuses the red light from the LEDs below very effectively. Better than the fluorescent light hard plastic diffuser!

This good bit of news now means I can move the diffused glass closer to the LED array. Happily, to the distance I had hoped for: 2 inches! In turn, this means I can make the final version of the light box quite thin, perhaps less than 3 inches.