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ArcticMyst Security by Avery

500mw 445nm True Blue Diode $470 =)

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well about the tv issue. i personally believe laser tvs will be mass produced befoe OLED's. OLED's have a short life. of typically 5 years. Laser tv's will last thousands of hours longer. like LCD's.

michael
 





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Yes, these are from prototype devices used for a laser TV Laser TV — Laser TV News, Reviews, Release Dates, Previews, Guides & Media Apperently they had problems with the blue laser diode's lifetime due to packaging issues. I think the issue has been fixed by putting the blue diodes on C- mount FC packages.

Why is it that the blue gun is always the hardest to keep alive, wither laser, bulb, lcd projection tab, or crt?
 
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Mar 8, 2008
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The tread title is 500mW, but the diode in question is 50mW, correct?
 
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That's not even warm to the touch. That's only a few degrees above ambient :(
 

LSRFAQ

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Why is it that the blue gun is always the hardest to keep alive, wither laser, bulb, lcd projection tab, or crt?[/QUOTE]

Because blue photons correspond to highly energetic electrons, and energetic electrons correspond to damage, be it gas, liquid or solid state mediums.

You think blue emitters die, wait to till you try 265 nm or shorter UV. I speak from experience. Everything dies, including the mirrors, lenses, and windows at those wavelengths.


Steve
 
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That pdf is homemade by somebody, I wouldn't take it as gospel by any stretch of the imagination.
 
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That's not even warm to the touch. That's only a few degrees above ambient :(

Yep. While most of us use laser diodes regularly with good results, most of us do not use them properly in terms of temperature regulation. Generally speaking (but not without exception) laser diodes should be kept at or below 25C, and a TEC is always required for true longevity and stability. Many diodes intended for media burning applications are capable of running reliably at much higher temperatures (up to 60C) BUT they are not wavelength stable unless the temperature is carefully controlled.
 

drlava

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I have a few extras of these still in the original packing with the original sellers data sheet with the curve for the individual diode available if anyone is interested. Less than the ebay cost.
 




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