Pman
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I finished this build and Lazerman121 really wanted me to post it so here it is. This is a multimode 50mW max rated somewhere between 440-455nm and you would not guess that it is not a single mode. He has been selling them for awhile but they never seemed to get much attention and that's a shame. I do plan on building another one at a much lower output as the wavelength shifts a lot and I want to see the difference between it and a 450nm a bit better. My pics cant pick it up because I really need a filter to stop the bloom on the dot but the dot is sharp and round.
3.8mm diode pressed, soldered with an x-boost with some Arctic Alumina stabilizing everything and a small heat-sink on the driver that isn't needed but I'm in the habit of doing it anyways:
Leadlight/laser66 board with button and an LED glued onto it:
Soldered negative wire onto the board:
A different negative wire soldered to the LED and a positive wire soldered between the LED and switched side of the switch:
Other side of the original negative wire soldered to a piece of flexible copper to pick up the negative from the battery off the host wall:
Negative and positive wires from the driver soldered to the appropriate board points:
A word about my setting. I did not do a thorough plotting points on a graph type of diode check to see where the curve was or anything but I noticed that it will put out quite a lot more and maybe up to 300mW but you would really be shifting the wavelength high. AS far as I know no-one has even built theirs to hit 3 digits. I deliberately set mine to hit just over 200mW and I have't noticed any issue. That is 4 times the rated max output of these! I am NOT suggesting anyone else do this although Alien will likely try lol
(just teasing my friend).
Output with an acrylic lens:
Output with a G:
Finished laser with a black end cap, button and focus knob:
Indicator light:
Labels added:
The LED is really bright on this one:
There's no fog necessary for beam shots because of the power density. Also, all the pics were taken with an acrylic lens and not a G:
Trying to show the small dot off a Matt black background but it's very bright. About 20 feet away:
The problem with pushing it so hard is not being able to get a good sense in the difference in how it compares to a 450nm single mode. I used a PLP450 at 380mW to try and compare as that diode was being pushed hard too but my camera doesn't pick up the difference well compared to what I see plus the PLP has almost twice the output. The NDB has a WAY nicer dot. What I see is the NDB7242E has a definite violet hue in comparison that I can't show you well but here's the pics. NDB on the right. This is the reflections off of a black surface:
NDB is on the left obviously unfocused against a flat white background. See how the center is white and then blue. Look at the outside edge though where it looks violet and compare that to the lighter violet of the one on the right and you should notice the difference:
Against a flat black background with NDB on the left. Same thing here with the outer violet part for comparison:
If you saw these yourself you would immediately see the difference.
IF you don't have one in your collection I would HIGHLY recommend it although Lazerman is currently out of stock but thinks he will be able to get more and he would like to know how many others may be interested here:
http://laserpointerforums.com/f39/ndb7242e-445nm-diodes-91339-3.html#post1407561
Thanks for looking and it was a pleasure to serve and inform:beer: (I don't drink but you get the point)
3.8mm diode pressed, soldered with an x-boost with some Arctic Alumina stabilizing everything and a small heat-sink on the driver that isn't needed but I'm in the habit of doing it anyways:
Leadlight/laser66 board with button and an LED glued onto it:
Soldered negative wire onto the board:
A different negative wire soldered to the LED and a positive wire soldered between the LED and switched side of the switch:
Other side of the original negative wire soldered to a piece of flexible copper to pick up the negative from the battery off the host wall:
Negative and positive wires from the driver soldered to the appropriate board points:
A word about my setting. I did not do a thorough plotting points on a graph type of diode check to see where the curve was or anything but I noticed that it will put out quite a lot more and maybe up to 300mW but you would really be shifting the wavelength high. AS far as I know no-one has even built theirs to hit 3 digits. I deliberately set mine to hit just over 200mW and I have't noticed any issue. That is 4 times the rated max output of these! I am NOT suggesting anyone else do this although Alien will likely try lol
(just teasing my friend).Output with an acrylic lens:
Output with a G:
Finished laser with a black end cap, button and focus knob:
Indicator light:
Labels added:
The LED is really bright on this one:
There's no fog necessary for beam shots because of the power density. Also, all the pics were taken with an acrylic lens and not a G:
Trying to show the small dot off a Matt black background but it's very bright. About 20 feet away:
The problem with pushing it so hard is not being able to get a good sense in the difference in how it compares to a 450nm single mode. I used a PLP450 at 380mW to try and compare as that diode was being pushed hard too but my camera doesn't pick up the difference well compared to what I see plus the PLP has almost twice the output. The NDB has a WAY nicer dot. What I see is the NDB7242E has a definite violet hue in comparison that I can't show you well but here's the pics. NDB on the right. This is the reflections off of a black surface:
NDB is on the left obviously unfocused against a flat white background. See how the center is white and then blue. Look at the outside edge though where it looks violet and compare that to the lighter violet of the one on the right and you should notice the difference:
Against a flat black background with NDB on the left. Same thing here with the outer violet part for comparison:
If you saw these yourself you would immediately see the difference.
IF you don't have one in your collection I would HIGHLY recommend it although Lazerman is currently out of stock but thinks he will be able to get more and he would like to know how many others may be interested here:
http://laserpointerforums.com/f39/ndb7242e-445nm-diodes-91339-3.html#post1407561
Thanks for looking and it was a pleasure to serve and inform:beer: (I don't drink but you get the point)
Last edited:
