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You can buy good red diodes for cheap, plus they will be brand new and you can power them with a pair of AA batteries in series, the internal resistance of the laser diode will usually allow you to get away with it but it could shorten it's lifespan, or just buy a cheap driver.
Just remember safety 1st, any laser over 5mw can damage our eyes.
Now a 639nm will be much more visible than a 650nm and you can also get more out of it with a glass lens rather than an acrylic.
Just remember safety 1st, any laser over 5mw can damage our eyes.
5pcs LPC836 650nm 350mW-500mW-550mW Red 5.6mm Laser Diode Original Mitsubishi | eBay
5pcs Original Mitsubishi LPC836 650nm Red 5.6mm Laser Diode. 5x LPC836 5.6mm Laser Diode. warranty: no warranty because laser diode is consuming material.
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8pcs 532nm 650nm 780nm 808nm 980nm Red IR Laser Diode Power Circuit Driver Board | eBay
This is a power driver Circuit Board commonly used for 532nm 650nm 780nm 808nm 980nmnm Blue Green Red IR Laser Diode! 8x Laser Diode Module Driver Board.
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10pcs 12x30mm 5.6mm TO-18 Case Laser Diode Housing w/ 200-1100nm Focusable Lens | eBay
10pcs 12x30mm Laser Housing w/ 200nm-1100nm Lens For 5.6mm TO-18 Diode. For 5.6mm TO-18 laser diode. With 200-1100nm Focus Collimating Lens!
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Now a 639nm will be much more visible than a 650nm and you can also get more out of it with a glass lens rather than an acrylic.
1pcs Ushio 639nm 200mW AlGaInP Laser Diode Red HL63022DG | eBay
Find many great new & used options and get the best deals for 1pcs Ushio 639nm 200mW AlGaInP Laser Diode Red HL63022DG at the best online prices at eBay! Free shipping for many products!
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