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All, for an optical assembly I need to solder a quick testing setup. What's the typical current for a 5mW red diode.? Is it 20mA or 200mA??? Lost it somewhere... Thanks!!!

added some new findings

What Hi-Tech outdoorsman wouldn't want to have the Coleman camp laser on hand to point out stars Like it! Can you actually see the beam with the naked eye?

The different color is just a neat thing, I don't care about that. But I do feel kinda annoyed by the fact that it drains the batteries when left in the yellow or green position. I bought these for permanent mount on my astronomy gear, to replace the 532nm pointers. I think I will try to open...

This may not qualify as a review, as it is not my intention to write an in-depth review about this laser. Many things have already been discussed by The_LED_Museum. Please see this as a complement. This is only an expression of my personal experiences with this laser. On january 5th, 2014 I...

I finally received the second laser today. I will post a review in a new thread.

It is my experience that a 1 - 5 mW green does nog affect night visioen while stargazing. The beam of such lowpower green is perceived as dim grey. For an equally visible red, I needed at least 300mW of 650, or 150 - 200 mW of 635 because of the poor reaction of the human eye tot red light in...

what is this? Kintergarten?

>>I ALSO suggest those wanting to discuss the failed delivery to another thread-as that has very little to do with this review<< I can not agree. Delivery of the goods is thé most important part of the deal, and should be part of a fair review. Where is the value in knowing that a particular...

the problem is they made a mistake. I payed for 2 lasers and they sent only 1. My account says it is shipped and delivered, but that counts for only 1 laser. They also admit that they sent only 1. My problem is just that I'm not getting the 2nd, which I payed for. Send PM if you want to see...

No, no tracking on the 2nd...

I ordered and payed for 2 of these at Laserbtb in december 2013. Received one (1!!!) in mid january. Today is february, 20th and still haven't received my 2nd laser (which I payed for!) Have been e-mailing with Laserbtb over and over to no avail yet. The one I did receive has a short circuit in...

Poor me, then...

OK, back to topic. 635 or 650 makes a big difference in beam visibility. At 650nm, you better look for a laser 300 -500 mW to equal a 5 mW green. At 635, 120 - 150mW should do.

1. Standard Li-ion 3.3V, 2 of them indeed. 2. Wriststrap connected to ground, water tap. Don't know if this is important as it worked for months. 3. No. 4. Room temp.

Ok, so I got this PL450Bdiode from DTR. Copper module and a 100mA linear Moh's driver. Assembled al the stuff in a 501B Host with appropriate heatsink. The laser worked fine for several months. Then, a couple of weeks ago, it just faded out over a couple of seconds. It never has been on for more...

I can not find a translation for this word. Do you mean collimated? col·li·mate tr.v. col·li·mat·ed, col·li·mat·ing, col·li·mates 1. To make parallel; line up. 2. To adjust the line of sight of (an optical device).

They come in 30mW and 50mW and prices are dropping : HL 520nm diode 30mW 50mW

I cannot agree with recommendations for lasers 50 to 100mW. For astronomy, any green over 5mW is way to bright. You will destroy your night vision with a green laser at 10mW. The laserbtb 5 mW 515nm direct diode is the perfect laser for astronomy. I prefer it over the cheaper 532nm DPSS lasers...

Nice, Jurgen! Would be fun if you could post shots of your other lasers too.