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Old 06-10-2010, 05:25 PM #209
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Default Re: 445nm Casio Laser Diode Compilation Thread

Off topic but not thread-worthy question:

How does the Casio A130 Projector create a full spectrum projection with 445nm lasers? Why would they use both lasers and LEDs? You'd think that they'd have green lasers and red lasers in them too.

-Tony


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Old 06-10-2010, 05:29 PM #210
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Default Re: 445nm Casio Laser Diode Compilation Thread

This projector uses 445nm laser for blue, red LED for red and phosphoric wheel that gives green light when illuminated with blue laser.
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Old 06-10-2010, 05:44 PM #211
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Default Re: 445nm Casio Laser Diode Compilation Thread

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Originally Posted by Xplorer877 View Post
Off topic but not thread-worthy question:

How does the Casio A130 Projector create a full spectrum projection with 445nm lasers? Why would they use both lasers and LEDs? You'd think that they'd have green lasers and red lasers in them too.

-Tony
Cause green and red lasers of the same power required for match the blue one, can be insanely high-cost .....



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Old 06-10-2010, 05:51 PM #212
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Default Re: 445nm Casio Laser Diode Compilation Thread

Well so were 445nm diodes until there was a reason for them to be mass produced. Hmm, pretty odd way of making a projector. I might have to check it out. I hate the POS projector I have right now.

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Old 06-11-2010, 01:15 AM #213
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Default Re: 445nm Casio Laser Diode Compilation Thread

I'm still patiently waiting for the 635 diode to make it into a projector. Mitubishi and other companies have 635nm diodes and others close to that wavelength on their websites and they are listed as for projector or something similar IIRC.

Then we need green, yellow, and orange diodes and we'll have a box of crayons
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Old 06-11-2010, 02:05 AM #214
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Default Re: 445nm Casio Laser Diode Compilation Thread

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Originally Posted by GooeyGus View Post
Man....

Right when I try to stop spending so much cash on lasers, these things come out!!!

As cheap as I thought they were, they're draining my wallet faster than I'd like!

BTW, epic quote from you:
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Originally Posted by GooeyGus View Post
Am I the only one that thinks $2500 isn't that ridiculous for a 500mW 445nm diode? Think of how much you would pay for a 500mW 473nm DPSS blue. A lot more than that... I think $2500 might get you 100mW of 473nm in a high quality lab module... if that. Now, realize that this can be put in a hand-held because of it's relative simplicity (as long as it's a standard 5.6mm or 9mm diode). How much is a 30mW 473nm RPL? Like $1200 bucks? So for just a hair over twice that you get over 10 times the power. Sounds good to me
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Old 06-11-2010, 03:20 AM #215
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Default Re: 445nm Casio Laser Diode Compilation Thread

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Originally Posted by Xplorer877 View Post
Well so were 445nm diodes until there was a reason for them to be mass produced. Hmm, pretty odd way of making a projector. I might have to check it out. I hate the POS projector I have right now.
High powered blue LEDs are how those "white" LEDs shine white. The blue hits a phosphorescent coating that creates the remaining colors. The red LED may even be used just to correct for what the other colors of the wheel produce for a fuller spectrum. These blue lasers may actually end up being the driver behind very high intensity white lighting at low powers.
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Old 06-11-2010, 05:10 AM #216
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Default Re: 445nm Casio Laser Diode Compilation Thread

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Originally Posted by Pontiacg5 View Post
Then we need green, yellow, and orange diodes and we'll have a box of crayons
I truly cannot wait until this day arrives!!!!

But affordable crayons...which is the hard part for a broke college student like me...
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Old 06-11-2010, 05:16 AM #217
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Default Re: 445nm Casio Laser Diode Compilation Thread

I'm more than halfway there now, I have a yellow, a blue, a purple, a green, and a red. Now I just need an orange!
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Old 06-11-2010, 06:17 AM #218
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Default Re: 445nm Casio Laser Diode Compilation Thread

Keep it up Pontiacg5!!!

But from how I understand it, orange wavelengths are still really expensive and hard to find (also usually low mW's).

But I know you will complete your collection soon enough...
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Old 06-11-2010, 06:29 AM #219
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Default Re: 445nm Casio Laser Diode Compilation Thread

lol@the tags. I definitely have to sell some stuff.... has anyone tried to push these things above 1.5watts in a silver TEC host or something? I want to see the absolute maximum these things will run at, before they just melt.
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Old 06-11-2010, 07:27 AM #220
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Default Re: 445nm Casio Laser Diode Compilation Thread

Just think, we'll never have to deal with fricken DPSS again!

(*single tear falls down cheek)

-Tony
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Old 06-11-2010, 10:05 AM #221
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Default Re: 445nm Casio Laser Diode Compilation Thread

Some data from one of the 445's...
FV ----- ma
3.82 -- 260
3.93 -- 300
4.01 -- 340
4.09 -- 380
4.15 -- 420
4.19 -- 460
4.24 -- 500
4.26 -- 540
4.30 -- 580
4.30 -- 620

This is only a guide, every diode will be a little bit different.
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Old 06-11-2010, 10:19 AM #222
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Default Re: 445nm Casio Laser Diode Compilation Thread

Quote:
Originally Posted by Flaminpyro View Post
Some data from one of the 445's...
FV ----- ma
3.82 -- 260
3.93 -- 300
4.01 -- 340
4.09 -- 380
4.15 -- 420
4.19 -- 460
4.24 -- 500
4.26 -- 540
4.30 -- 580
4.30 -- 620

This is only a guide, every diode will be a little bit different.
Pretty varying results from what I've seen. Such as Jayrob's being 4.03v @ 640ma. Then spyderfire is getting 4.32v @ 1.4A
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Old 06-11-2010, 10:27 AM #223
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Default Re: 445nm Casio Laser Diode Compilation Thread

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Originally Posted by HumanSymphony View Post
Pretty varying results from what I've seen. Such as Jayrob's being 4.03v @ 640ma. Then spyderfire is getting 4.32v @ 1.4A
There is a possibility of , how Dave and Hmike said it, multiple batches from different sources, which can have different qualities and capabilities.

We do need to keep an eye out for that, indeed.
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Old 06-11-2010, 11:47 AM #224
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Default Re: 445nm Casio Laser Diode Compilation Thread

Maybe it depends from driver to driver.
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