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ArcticMyst Security by Avery

PHR-803t IR and Red laser

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Sep 26, 2008
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I'm fairly new to this community, I am working on a project that will hopefully result in my third laser. My first two include a "violet" phr803t in a DX flashlight with a rkcstr 48ma driver. The other is a single red phr-803t in a smaller DX flashlight with the same 48ma rkcstr driver.

I want to use the red and IR laser to make a laser that will run the red and IR at the same time. I have two of the PHR-803t sleds so I have 2 "violet" and two red/ir. If one goes up in smoke I have another, plus they are not too expensive. I have just read the Magenta laser post about the Sony violet/red, and thats the same direction I am heading with this.

I would love any feedback that anyone can give. I look forward to this.
 





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Why do you want to run red and IR at the same time? :-/ And the violet phr-803t diode could take more than 48mA.
 
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I know the Violet can take more than 48ma but I was trying to be safe with it.  The violets application is for on my teams airsoft rifles as a targeting laser and I would rather not hurt the other players, not to mention it was my first laser.

As for the red/IR I would like to be able to know where the IR is pointing without having to use night vision or other IR sensitive optics.  It's more for fun than anything else.
 

treb76

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You'd prolly be better off using the red for targeting as it has better divergence specs- meaning that the dot will be smaller at longer distances.

Also, why run the IR if you're not going to be using night vision.. just use the red and reduce strain on the diode. usually they can take a max of like 50mA. I don't have any mW [power] readings for them.
 
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I understand the dynamics of the red over the violet. It's just airsoft, its for fun, not to mention a bb doesn't travel in a straight line anyways. The violet is for fun and cool factor.
 

treb76

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As far as making magenta, it'd be pretty tough without a PS3 diode since you can't align the two beams without some kind of optics. Also, the red and violet have different focal lengths so it'd still be difficult to focus, if not impossible, both colors at the same time to the same distance.

I also noticed last night, the red dots are a lot easier to see in wooded enviornments-- if that's where airsoft is still played these days.
IMO, just make an impressive violet pointer w/ like 80-100mW and then just have the red for targetting.

As for running both red and IR at the same time: If I remember, you're supposed to use a separate driver for each color. Same with the ps3 diode if you go with that.
 

Ace82

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You can't collimate the beams from the ps3's red & blu-ray simultaneously because their focuses are way different. If you had them both on at the same time, you could only focus one at a time with a single lens. Best to use two separate diodes.

And you probably don't want blu-ray as a gun site because you can't see the dot AT ALL in the daylight, and it's really hard to see the dot at a small distance unless you boost up the power (~100mA) and risk shining it in someone's eye. 405nm is at the end of our visible spectrum, and because of the low wavelength it makes for a much more dangerous laser even at lower power. You wouldn’t want to use a black light as a lamp in your room if you where actually trying to see would you? I like to use this analogy for comparing the 405nm wavelength to 650nm burning, or danger risks:

The longer the wavelength, the duller the blade. So to cut, you need more force/time.
The shorter the wavelength, the sharper the blade. So cutting is easier/faster.

I would say to use a 5mW green, or 10mw red, although the green will give away your location allot easier since it is our peak color sensitivity.
 
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Ace, thanks for your input. I just want to point out this thread where it seems that he used the Blu-ray/red diode from a ps3 and used one rkcstr driver and collimate the beams and came out with a magenta beam.
"LPF"/forums/YaBB.pl?num=1226827066

The point of this thread was to see if I can run the RED and IR from a phr803t simultaneously. Not the blu and red I was just using the Magenta as a reference. I am looking for some figures and theories and thoughts as to if the RED and IR can be run at the same time. How effectively, what voltages, what mA, and on one driver?
 
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First off you will wanna know what the voltage and current ratings are for both diodes.

http://www.laserpointerforums.com/forums/YaBB.pl?num=1213642887

Since the voltages are about the same you should be able to use one driver without a resistor. I recommend the Rkcstr low range adjustable. Hook up both + to the LD on the driver and ground the diode and driver. Turn the pot all the way counter clock wise then apply power and slowly increase it. As to how far you can push it I don't know. It will be hard because you wont be able to see the IR light. Do at your own risk.
Good Luck

-Rob
 
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Xplorer877 said:
First off you will wanna know what the voltage and current ratings are for both diodes.

http://www.laserpointerforums.com/forums/YaBB.pl?num=1213642887

Since the voltages are about the same you should be able to use one driver without a resistor. I recommend the Rkcstr low range adjustable. Hook up both + to the LD on the driver and ground the diode and driver. Turn the pot all the way counter clock wise then apply power and slowly increase it. As to how far you can push it I don't know. It will be hard because you wont be able to see the IR light. Do at your own risk.
Good Luck

-Rob
The IR LD has a slightly lower voltage drop and thus will suck up all the current from the red LD if it's without a resistor or driver.
 




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