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MB4004
Elite Laser
Joined: 28 Sep 2007
Posts: 163
Picture(s): 1
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 Posted: 2/19/08, 7:46 PM Post subject: How bright |
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| Compared to a 15mW Green 532nm, how visible would a 15mW 405nm laser beam be? Is it like 650nm where you need crazy high power to have a bright beam? |
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leukoplast
Wicked Lasers God
Joined: 05 Dec 2006
Posts: 2272
Picture(s): 12
Location: California
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| Posted: 2/21/08, 1:36 PM Post subject: |
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From what I understand yes, I think a good comparison is using 650nm as a good guide to how bright a violet laser would be at the same mW rating.
But even 10mW isn't too shabby. Check out this video (near the end) it shows him using the laser which is a PS3 diode, and have been known to be about 10mW. It looks alright as brightness is concerned.
http://www.metacafe.com/watch/906366/blu_ray_laser_phaser/
_________________
125mW Fusion - Divergence- 1.0 mRad | TEM00-TEM01* Doughnut mode | 119mW peak, 103 Nominal
55mW CNI - Laserchecked at 65mw peak, 55mw nominal | Divg -2.18 mRad |MIA! Lost!! FOUND!
15mW Evolution - 100mW Peak, 85mW Nominal(Holds +/- 5% over 2min) | Divg 1.0mRad
Has semi-adjustable power setting by tweaking battery cap: <5mW - Peak power.
Chromed P125 Pulsar - 152mW peak, 135mW nominal:
- Divg - Rechecked, and refocused. Now at 0.05mRad...Yes, 0.05!! 5.08mm at 73 feet: 4mm at app
400 Watt Fogger - Great fogger! Pumps out a lot! Fills room easily.
Listen to one of my songs - |Space Continuum.mp3| |Site| |Liquefied Light.mp3|
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leukoplast
Wicked Lasers God
Joined: 05 Dec 2006
Posts: 2272
Picture(s): 12
Location: California
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| Posted: 2/21/08, 1:52 PM Post subject: |
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Here, I found a video of a guy who has a box that can switch between red and violet, they look pretty similar to me in terms of brightness.
http://www.youtube.com/watch?v=e1iIRZRbGiI
_________________
125mW Fusion - Divergence- 1.0 mRad | TEM00-TEM01* Doughnut mode | 119mW peak, 103 Nominal
55mW CNI - Laserchecked at 65mw peak, 55mw nominal | Divg -2.18 mRad |MIA! Lost!! FOUND!
15mW Evolution - 100mW Peak, 85mW Nominal(Holds +/- 5% over 2min) | Divg 1.0mRad
Has semi-adjustable power setting by tweaking battery cap: <5mW - Peak power.
Chromed P125 Pulsar - 152mW peak, 135mW nominal:
- Divg - Rechecked, and refocused. Now at 0.05mRad...Yes, 0.05!! 5.08mm at 73 feet: 4mm at app
400 Watt Fogger - Great fogger! Pumps out a lot! Fills room easily.
Listen to one of my songs - |Space Continuum.mp3| |Site| |Liquefied Light.mp3|
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MB4004
Elite Laser
Joined: 28 Sep 2007
Posts: 163
Picture(s): 1
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| Posted: 2/25/08, 10:11 PM Post subject: |
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| I still think the violet looks brighter in the videos. Is violet just a more intense color to our eyes? |
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leukoplast
Wicked Lasers God
Joined: 05 Dec 2006
Posts: 2272
Picture(s): 12
Location: California
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| Posted: 3/01/08, 9:50 AM Post subject: |
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Well, I now successfully have a 25mW violet laser from eBay. And all I can say is its awesome!
brightness...yes, brightness. Well, when your looking at the pure violet color on a non-fluorescing material, the 25mW violet seems as bright as a 5mW red, maybe a tad brighter. But when it fluoresces on something (for example white paper it turns blue) its much brighter.
Here is an example. As you can see on the wall its a dim violet (non-fluorescing), and the blue on some white T-shirts, its quite bright.
And here is another neat one. Its actually 'charging' the white shirt below it, which lights up the wall.
And Tide vs the violet laser 
Any who, violet is a very unique color, and very fun to play around with. Also due to the lower wavelength and tighter focusable beam, I can actually burn stuff with this thing. Possibly even light matches!
_________________
125mW Fusion - Divergence- 1.0 mRad | TEM00-TEM01* Doughnut mode | 119mW peak, 103 Nominal
55mW CNI - Laserchecked at 65mw peak, 55mw nominal | Divg -2.18 mRad |MIA! Lost!! FOUND!
15mW Evolution - 100mW Peak, 85mW Nominal(Holds +/- 5% over 2min) | Divg 1.0mRad
Has semi-adjustable power setting by tweaking battery cap: <5mW - Peak power.
Chromed P125 Pulsar - 152mW peak, 135mW nominal:
- Divg - Rechecked, and refocused. Now at 0.05mRad...Yes, 0.05!! 5.08mm at 73 feet: 4mm at app
400 Watt Fogger - Great fogger! Pumps out a lot! Fills room easily.
Listen to one of my songs - |Space Continuum.mp3| |Site| |Liquefied Light.mp3|
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Astro
55mW Advanced Wicked Laser
Joined: 12 Feb 2008
Posts: 64
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| Posted: 3/04/08, 4:59 PM Post subject: |
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| i would say that violet is closer to 635nm red than 650nm. so it will have a dim(but still visible) beam at 10mW |
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Athoul
Wicked Lasers God
Joined: 13 Sep 2005
Posts: 7544
Location: Canada
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