Brown Laser?

I dont think brown is feasible at all. Something will only look brown in contrast with something brighter. You can project RGB video onto a screen using lasers and have brown elements in the projection. But when you take out everything else, that brown will look like a (relatively dim) orange.

A very similar concept would be attempting to create grey light by dimming a white LED. If you have a brighter led beside it illuminating the same white surface, the dimmer projection would appear grey. But turn off the brighter led, and the dimmer one will appear white, just less bright.

Gold and silver have another problem: As far as color is concerned, they are yellow and white, but only combined with reflection it makes an object appear gold or silver.

I know nothing about dye lasers, would it be possable to make a brown dye laser ?

sooooo... any one think to make a white laser.. then put brown celofane in front??

just a thought

The basic error (sorry, but is an error), is that, speaking about creating colors with light beams, you can only use the additive system, where instead, brown is one of the colors made with subtractive system (ok, ok, technically is not completely true, cause you can also create brown with additive system, but only adding also black, and, as you know, add black is like subtract luminosity ).

I mean, is easy to create brown on a paper foil, cause the mix of colors works in subtractive way (imagine transparent layers of the different colors, where the first one subtract some light from the second one, and so on, just for have a more clear idea about subtractive system)

With laser beams, instead, you are adding one light to another, not subtracting it, so, is much more easy to create the colors of the additive system (cyan, from blue and green, magenta, from blue and red, and yellow, from red and green), than the colors of the subtractive system (after all, we still don't have a laser that can subtract green from red, nor the black beam that can add black to the other beams, right ? )

bobhaha said:

sooooo... any one think to make a white laser.. then put brown celofane in front??

just a thought

Click to expand...

It's a funny inside joke among lighting technicians, that when an artist is disliked, they say "put a brown filter on his follow-up spot" LOL :crackup:

Robert

It's not possible to make a brown laser.

On a LCD screen, brown is created by red/green pixels and the blue turns black I believe.

It's sort of tricks our eyes.