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Violet lasers from DX

X-laser

X-laser

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Hey people! I'd like you to review the 405 nm BluRay Violet lasers from DealExtreme, because I dont know which one should I buy,

To my opinion 100 mw will be a good variant also If i can pot mod it further...

So i need violet laser as bright as 200 mw red and 50 mw green.

Thank you!
 
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roddenberry

roddenberry

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The DX blueray lasers are nice and inexpensive, but i'd rather build one myself, which would be even less expensive.

I wouldn't recommend pot-modding any prebuilt blueray lasers, the blueray diodes are much more sensitive to overloading and unlike the IR and red diodes, die rather quickly when driven above specs.

A blueray laser would have to be around 200 mW to match the brighness of a red 200 mW laser.

Red, green and blue? Are you trying to build a RGB laser by any chance? :D In that case, i'd recommend the lasers you stated above, along with TWO blueray lasers built around PHR diodes... These can be bought for $10 and less, so for about $50/60, you could buy two drivers, two aixiz modules and two PHR's and with the little mirrors and lenses that come in the PHR sleds, you'd have plenty of blueray glory for your project! :D

Robert
 
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Elgranto7

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why did you put this in the review section?
>.>

anyway.. 100mW of violet won't be as visible as 50mW of green.

othcs.gif
 
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ProjMan

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You'll need about 69 WATTS of 405nm to match the brightness of 50mw 532nm green.

Matching 200mw of 660nm red will take 19 watts.
 
RA_pierce

RA_pierce

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ProjMan said:
You'll need about 69 WATTS of 405nm to match the brightness of 50mw 532nm green.

Matching 200mw of 660nm red will take 19 watts.
Click to expand...


More like 150-200mW of 405 to match 50mW of green.
405 and 650/660 are similar in brightness mW for mW.
 
Crazy Jay

Crazy Jay

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RA_pierce said:
More like 150-200mW of 405 to match 50mW of green.
405 and 650/660 are similar in brightness mW for mW.
Click to expand...

You know upon looking at that visible light chart it makes me wonder what kinds of colors we are missing out on. I wonder what infrared looks like ... and UV. It might be a color all on its own ... then again it might not appear as a color which could be why we can't see it. Ah forgive me... I'm half asleep right now.
 
davidgdg

davidgdg

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ProjMan said:
According to which luminosity function?

I get 69W using CIE 1924 and 8.7W using Sharpe et el.
Click to expand...

I get the same figure with CIE (http://www.cie.co.at/publ/abst/datatables15_2004/y2.txt) but intuitively the ratio seems too high.

It would be interesting to do our own experiments using the main wavelengths and some variable driven units .I guess the problem would be getting a sufficiently accurately measured green as a standard. It would need to be a low powered unit in the region of 1mw but at those power levels, accurate power output measurements are difficult.
 
partylighter

partylighter

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The image of @Elgranto7 slightly improved with some common laser wavelength in it.

BTW, my red 200nm is considerably fainter than my 50mW greenie. So I think a 100mW violet is still way dimmer than the 200mW reddie.
 

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