Recent content by laserdan

I'm sure that a certain laser manufacturer advertising "The Worlds Most Powerful Laser" as being capable of setting fire to things, burning flesh instantly, and targeting satellites in orbit doesn't help with this public perception in a positive way, either.... I, also, am afraid to shine my...

This is not even about a GREEN laser ... it belongs in the 455nm & other blue lasers forum :gj:

If you have room for driver electronics, you can always use a driver that can be modulated using PWM (pulse width modulation), and use 10% or 2% duty cycle waveform to drive a 1mW or 5mW laser to reduce the *apparent* brightness to 100uW. I emphasize *apparent* because the instantaneous...

In my opinion, the biggest danger of 405nm lasers is that they are WAY brighter than they appear to be, thus luring you into a false sense of safety or into complacency. This is because your eyes aren't very sensitive to 405nm. I realized this when I took a video of some cats with my phone...

As a member who rarely posts and READS 99.9% of the time on this forum, I would like to point out that viewing all the negative responses and flames is more annoying and a bigger waste of time than the original offending post. Whats worse? One dumb question, or a dozen flaming responses? One...

You make a very valid point, Benm. Perhaps I should have stated it differently, in that I avoid bringing up lasers with my ophthalmologist to avoid being scolded or lectured by him on matters that I ought to know better about... Not that I wish to leave him guessing about anything, but rather...

When you get to a certain age, whether you wear glasses or not, it is probably a good idea to see an ophthalmologist yearly anyway, as certain diseases like type 2 diabetes and various vascular diseases can show up in your eyes before you have any other symptoms. Changes in your retina can be...

Sorry about your loss, blord. It is out of fear for this very kind of event that I tend to order two identical diodes at at the same time.. The leads can only take so much flexing and they will break. Avoid bending them at all costs! If you must bend them, bend them only once to their final...

If you just want to swap the 635nm diode in an existing red laser pointer, the safest way would be to do that with a <5mW red laser pointer, as the driver will most likely be putting out about the correct amount of current. IF you put this diode into a higher powered red pointer than 5mW, you...

20mA? The lasing threshold for this diode is 30mA... Typical operating current is 45mA. MAX operating current is 60mA If Blord only runs his SLD63518262 diode at 20mA, all he will have is a red LED. Using two AA or two AAA cells as the power source, a 25 ohm resistor is all that is required...

Hi Jay, Not long ago I ordered your Pocket Mini kit with the copper upgrade. I built it with a Dr. Lava microboost set to 1050mA. I am using the UltraFire 16430 880mAh protected cell. My laser pulses after a few minutes of run time. Do you think this is because the driver is getting too hot...

Hi Jay, Will you please quote me on a polished SS 18650 kit with copper upgrade, Knurled EZFocus adapter, AixiZ module, AixiZ 445 lens? * SS 18650 basic kit - $55 (host/heatsink/drill the pill) * Copper heatsink upgrade - $12 * Knurled EzFocus adapter (if desired) - $24 * AixiZ module - $5 *...

My G1 came with excellent focus, however the beam exits the aperture off axis. I wasn't sure if it would have been the lens off axis, or the diode pressed in the module off axis, so I have left it alone. Its a minor annoyance, but it is a shameful indication as to the shoddy assembly of this...

Ah!, Thanks! This is the kind of info I was looking for. A google search for any technical information on this scanner was fruitless. I have already tried powering up the He-Ne with 12V on red and black and tried both the yellow.white and white/black wires to both + and -, with no results...

I have in my posession two Symbols Technologies model LS-6500 bar code scanners. There are some nice FS mirrors and a galvometer for scanning. Since I have two, I may remove the galvo's from the he-ne tube to use in building a spirograph or x-y scanner from them some day. But in the mean time...