Can you dim lasers? |
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APW
Young Croc Joined: 13 November 2012 Location: Kent, UK Status: Offline Points: 1173 |
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Posted: 19 May 2020 at 9:46am |
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If a laser does this to a camera what’s it doing to your
eyes?
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monkeypuzzle
Young Croc Joined: 25 January 2005 Status: Offline Points: 923 |
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Dimming of LED lamps including LED lasers is not like traditional dimming. The light source is switched on and of at a very fast rate. The difference between the on and off time gives a perceived change in brightness. So a source of a 500mw will still kick it’s full power but only in very short bursts. If you’re thinking of using a laser of the power your talking please do some research into laser MPE maximum permissible exposure . Even a very brief burst from a laser is enough to do damage so even when they are dimmed they can cause damage. Putting beam divergence lenses can diffuse the beam but you will still need to do the calculations. I’d also look into local authority licensing regarding lasers. I know that ANY crowdscanning no matter how controlled is banned in Manchester.
Edited by monkeypuzzle - 19 May 2020 at 8:29am |
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blah blah blah blah blah......
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woody2
Old Croc Joined: 04 March 2010 Status: Offline Points: 1726 |
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I remember the days when pubs had 20w argon water cooled lasers......
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mk2_ginger_biscuit69
Old Croc Joined: 03 November 2008 Location: Brighton Status: Offline Points: 7801 |
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discotastic! |
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''Remember that the object of a subwoofer is to enhance the output of your main speakers, not overpower it''
''Dubstep - an elongated electronic fart'' |
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Digbethdave
Registered User Joined: 16 November 2018 Status: Offline Points: 406 |
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Couple decent moonflower will do a pub.
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Fred_dibna
Registered User Joined: 24 September 2018 Status: Offline Points: 213 |
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Yeah that's true. :)
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djeddie
Old Croc Joined: 26 April 2004 Location: Bristol Status: Offline Points: 4125 |
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900mW in total, I haven't looked at the specs, but you'll probably find its something like, 500mW red, 100mW green and 300mW blue.
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Chas n Dave : it's like Drum and Bass but with beards. E=mc² ±3dB
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Fred_dibna
Registered User Joined: 24 September 2018 Status: Offline Points: 213 |
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It's more than that it's 900mw not 500mw, i'll be buying the laser regardless because I might be able to use it somewhere else and i'll test it out when I get it but if it is indeed too powerful it won't be used in the pub. Here is the video to show you how powerful it is, and this is in a medium sized warehouse/lighting demo room. |
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Fred_dibna
Registered User Joined: 24 September 2018 Status: Offline Points: 213 |
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What are you about pal? I've not said i'm absolutely going to use it and screw the risks have I? So what gave you the idea that I said that? Read it properly I said I absolutely want the laser I didn't say i'm absolutely using it in the pub. If I didn't care about the risks I wouldn't of asked if it could be dimmed would I.
Edited by Fred_dibna - 17 May 2020 at 6:24pm |
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Andylaser
Registered User Joined: 16 April 2010 Location: Southampton Status: Offline Points: 300 |
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If you think the laser is too powerful for the venue then you absolutely shouldnt be using it there. Part of the "official paperwork" is a risk assessment, which you have admitted to failing already.
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"music so loud, that if we move in next door to you; your lawn will die" - Lemmy
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Andylaser
Registered User Joined: 16 April 2010 Location: Southampton Status: Offline Points: 300 |
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Possibly by turning down the diode drive current, but not guaranteed to work. Depends on the driver circuit.
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"music so loud, that if we move in next door to you; your lawn will die" - Lemmy
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Bams
Young Croc Joined: 08 April 2009 Status: Offline Points: 622 |
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With lasers: in doubt do not use.. a pub will be rather low so you will be beaming into peoples eyes at a short distance. I looked at the movie of the effect and this is a fun machine but with half a watt can be dangerous if used in close proximity.
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