Is it possible to intersect the beams of projectors

[ExInferis]

i'd like to set up projectors, so that the projectors beams will intersect and i do not know if this is possible/visibile on the screen.

[Amukidi]

Try it then!

[robotfunk]

Yes this is possible and very cool to do. I saw a great installation where 10 layers of mesh cloth (thule/wedding gown stuff) were projected from 2 sides. You could walk under and around them, both beams blended nicely with each layer having a different mix.

[ExInferis]

...and a quality on the screen is still OK? Maybe i did not explain well, what do i wanna do so....another explanation.
There will be a big projector projected behind a DJ on the wall...and few projectors will be placed on side walls...so the beams will intersect with side placed projectors and withDJ placed projector, cause of hall arhitecture...and i wanna know if the quality is still good?
and i will try it...but i'd like to know...if somebody ever seen something like this or even better if somebody already made installation like this.

[robotfunk]

I dont think the light beams will interact, but have not tried this so not 100% sure. I think any interferance will be so minimal you wont notice it, but the only way to be sure is to try it.

[unjulation]

if all you are woried about is beems crosing over each outher and how that will make each image look on the desagnaited beamer screen which are diferant to each outher then you'll be fine

[fluchtpunkt]

yes it is absolutely 100% possible!
beams of light do NOT interact with each other when crossing paths.
...there sure was some people sleeping through physics class 'round here ;):).

[sleepytom]

if i look at an object on one side of a room and sombody else looks at somthing in front of me do i become unable to see my object???

if the sun shines and a street ligh is left on does it become dark under the street light???

[snapdragon]

becareful, you must be very careful when crossing video projector beams, otherwise you can cause an explosion. :(
However, it is ok to cross the beams of slide projectors, although the 'space' around the point where they cross can become very cold (this is due to the negative light effect).

[pdoom]

Egon: There's something very important I forgot to tell you.

Venkman: What?

Egon: Don't cross the streams.

Venkman: Why?

Egon: It would be bad.

Venkman: I'm fuzzy on the whole good-bad thing. Whattya mean "bad?"

Egon: Try to imagine all life as you know it stopping instantaneously and every molecule in your body exploding at the speed of light.

Ray: Total protonic reversal....

Venkman: Right, that's bad...OK.. important safety tip. Thanks, Egon."

[vjrei]

You can croos projectors! and you do not need to go to school to learn that. ?have you ever seen one flash light bean bouncing because another flashlight bean was around?

Sorry, that only happend in galaxies far far away from here:p

[honeybeevisuals]

the best way to experience the effects of the cross roads of two projections is multiple layers of sheer screening or smoke and/or haze. With ample smoke at the point where the two beams cross you will get a nice floating criss cross of light and image. God i love light.

[bassy]

Again something about the beamers crossing:

If you let two light bundles cross, they won't interence, if you use a beamer are a heavy bundle of light (look to the spots at parties) it is accully almost the same (except for the complexity of the waveform)
If you take two different color spots a red and a green, and the spots are moving (like moving tek are how do the Light Jockeys call them?) pointed to the ground, there sure wille be two crossing two bundles of light somewhere, but there is no influence, between the two, it would be a nice job to be a light Jockey if you want to mix some collors and suddenly there comes a totally different thing due to physics.
(then it would be an interesting world, but now, you can expect everything,... boring world...)

Bassy

[Deaper]

Originally posted by snapdragon
becareful, you must be very careful when crossing video projector beams, otherwise you can cause an explosion. :(
However, it is ok to cross the beams of slide projectors, although the 'space' around the point where they cross can become very cold (this is due to the negative light effect).
WTF? EXPLOSION? NEGATIVE LIGHT EFFECT? I've never heard of either of these things?

[theFATman]

is it a difficult thing to line up two projectors so the same image lays over itself well? never tried it, just curious. (of course i haven't tried much of anything, but when i realized no one at my school uses the projectors much i began to think about having some fun)

Ray, when someone asks if you're a god you say YES!

[murph]

difficult? yes. beneficial? yes. tricky? yes. worth it? depends.

It's called stacking, and many high-end (5000+ lumen barco's) projectors actually are designed for it. I've never worked with one designed for it, but once I replace the bulb in one of my 2600 lumen MT1055's I''ll have to give it a try. I'm told it's pretty tricky to get working, and even trickier if you don't have completely identical projectors. Supposed to give roughly 50% of the second projector's lumen output.