Lightgate Proof-of-concept Test

Goals:

• First lamp firing - initial burn-in.
• Verify size of rough iris cutout.
• Crude check of thermal characteristics.

Pictures:

The lightgate.

Ratty cheesecloth suspended appropriate distance from lamp arc with LCD size marked in black.  Test iris consisted of a piece of aluminum foil with a guesstimated cutout.

Some pics of the elegant test setup.

Lamp arc as seen through a welder's helmet.

Conclusions/Notes:

• Initial burn ~2 hours.
• Color change obvious during first few minutes.
• Brightness increase dramatic.
• Put baffles alongside lamp arc to keep sides of lightgate cooler.
• Size permanent lid iris slightly smaller than test cutout.