Old 07-16-2013, 03:10 PM #1
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Default Blue laserdiode in old Beamer?

Hello Community,

i need a cheap blue laser diode for my projekt. I have read, that blue laser diodes with 445 nm are used in beamers. is that right? i want to buy this or this here to rip out the diode:
Beamer Hitachi CP-X440 defekt für Bastler | eBay
NEC MultiSync LT140G, Data Projektor (Beamer), Bastlerware/1300967 | eBay

and i dont want buy it, if there is no laserdiode avaible.

thanks so much for your help <3


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Old 07-16-2013, 03:11 PM #2
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Default Re: Blue laserdiode in old Beamer?

Projectors that old will not contain 445nm laser diodes.

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Old 07-16-2013, 03:18 PM #3
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Default Re: Blue laserdiode in old Beamer?

what about the beamers that i linked?
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Old 07-16-2013, 03:19 PM #4
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Default Re: Blue laserdiode in old Beamer?

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Originally Posted by Tim98 View Post
what about the beamers that i linked?
I was referring to those. They do not have 445nm laser diodes in them.

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Old 07-16-2013, 03:23 PM #5
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Default Re: Blue laserdiode in old Beamer?

hmm, how do I know that a beamer has 445nm laserdioes in them?
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Old 07-16-2013, 03:25 PM #6
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Default Re: Blue laserdiode in old Beamer?

If it's...
  1. New enough.
  2. Advertised as containing laser diodes or has appropriate warnings.
  3. Been opened up by a member here and confirmed to contain 445nm laser diodes.

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Old 07-16-2013, 03:30 PM #7
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Default Re: Blue laserdiode in old Beamer?

ah. do you know articles with beamers like that?
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Old 07-16-2013, 04:55 PM #8
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Default Re: Blue laserdiode in old Beamer?

Just buy one from Dtr already in a module. Much less risky.
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Old 07-16-2013, 05:11 PM #9
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Default Re: Blue laserdiode in old Beamer?

One marketing catchphrase I've seen a lot is a Hybrid lightsource or Hybrid something or other.
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Old 07-17-2013, 11:03 AM #10
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Default Re: Blue laserdiode in old Beamer?

ok. i have a "stupid" question but: can i find 445nm diodes in bluray discs? or only 405? :\
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Old 07-17-2013, 11:17 AM #11
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Default Re: Blue laserdiode in old Beamer?

Quote:
Originally Posted by Tim98 View Post
ok. i have a "stupid" question but: can i find 445nm diodes in bluray discs? or only 405? :\
Only 405nm. Blu-ray isn't exactly blue; it should be called vio-ray.
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Old 07-18-2013, 01:30 PM #12
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Default Re: Blue laserdiode in old Beamer?

ah ok
but i can see the beam of 405nm? because im not sure if 405nm already not visible anymore :O

another question (offtopic
i have a broken 50mw green laserdiode. how i know, that the driver isnt broken without another diode?

next time i get a 405nm diode (from an old dvd "vio-ray" burner x3). how i can put it on the driver perfectly?
also how i know where is + and where is -? and where pin is not used? :O

thanks for help
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