Home > Issues, observations > But how do we draw “bright idea lightbulbs” over cartoon heads now?

But how do we draw “bright idea lightbulbs” over cartoon heads now?

June 21, 2007

I often change bulbs in LCD projectors.  The high-pressure bulbs run so hot they require elaborate cooling fans, yet still shorten the life of the rest of the projector.  Picture quality degrades as they near end-of-life, and a new bulb (often with less than 1,000 hours on it) costs $350.

Various LED arrays stacked with optical columnators come to mind, but here’s another idea I like a lot: the microwave lightbulb.  Far more efficient (and thus cooler-running) and it wouldn’t die. It would vastly improve the economical practicality of classroom projection systems.  It could even be used in other applications like room lighting. 

(from Pure Pedantry)

Categories: Issues, observations
  1. June 22, 2007 at 08:50 | #1

    I think one reason why LEDs haven’t been used yet in projectors is they have a hard time getting bright enough for that application.

    But the microwave lightbulb may have a shot.  Very interesting idea indeed!

Comments are closed.