Recent content by redberet

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    how bright and long can spotlight beams get in real life?

    That doesn't sound that bad to me. I think with laser it will be around $10,000 per beam then. Any ideas around how much a spot light with a filter will cost?
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    how bright and long can spotlight beams get in real life?

    I guess I need to be more clear myself then. I'm posting this here because I'm not sure if lasers would be a good choice for this or xenons, or something else you can suggest. My reasons boil down to this: While lasers aren't very expensive, if you need wide, fat beams, the laser which is bright...
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    how bright and long can spotlight beams get in real life?

    I didn't ask (state) about lasers, but LEDs.
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    how bright and long can spotlight beams get in real life?

    Yeah, that's what I had in mind. I don't know much about high power LEDs, all I've heard is the size of the emitter and angle of the beam will require a giant focusing lens and the power per cubic cm will still be comparably weak (in other words, a focused beam might be possible, but a very fat...
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    how bright and long can spotlight beams get in real life?

    Thanks. Even if 80% of the light is lost by filtering, it might still work. Depends more on how much the xenon spotlight beams diverge and look after few km, not just few hundred meters. For lasers it depends but will be around 10 or so meters in diameter after few km, which is still kind of...
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    how bright and long can spotlight beams get in real life?

    Thanks, this is really valuable info. If the beam appeared to you to be then same brightness all the way until it disappeared, and you weren't looking straight from the back of the spotlight, than that means it went pretty far before fading. Same thing with lasers. The project is to create a...
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    how bright and long can spotlight beams get in real life?

    Can you link to a thread or photo? I can't find any shots from a distance, just from behind the spotlight. That doesn't give a good idea about the beam throw distance and brightness... same with lasers, video of a guy pointing his 5mW to the sky seems like it goes to infinity, as well as videos...
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    how bright and long can spotlight beams get in real life?

    Never seen a powerful one like some posted here irl. Saw some photos in this forum of 70,000 or so lumen spotlights. The photos are cool, but are there any photos anyone could show me with no long exposure and other camera settings/photoshop which make things brighter? One like this one from a...
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    large prism in front of spotlight = rainbow beam?

    If you put a large prism in front of a spotlight beam, will you get a gradient beam with the colors of the rainbow?
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    colored spotlight beams?

    To recreate the "laser rainbow" with spotlights, I'll just need 7 spotlights with colored glass filters then I guess. The laser rainbow is static, so no need to control the angle of the spotlights either I guess. BTW, they used individual laser sources for each color (well two for the violet...
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    colored spotlight beams?

    Thanks for the info guys. And hi PolarLi. Lasers, at least the modern DPSS and diode based ones I use produce coherent light. Which means all the photons coming out are the same wavelength (say 520, or green), so filters won't work because they block some wavelengths and allow others to pass...
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    colored spotlight beams?

    Hello everyone. Seeing some powerful spotlight photos, especially these from PolarLi, Got me really interested in this subject. This just might be my new wallet murder hobby, but first I thought I'd ask some question to understand what spotlights are and are not and what they can and can't...
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