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My first laser build, OSRAM PLTB450B in a 14500 Flashlight Host

Laserin

New member
Joined
Jun 16, 2021
Messages
14
Points
3
My name is Ikhwan, I am from Indonesia, I have joined LPF since a year ago, and I was inspired by Styropyro laser to make a laser pointer in the host 14500 flashlight. I made a laser pointer using Osram PLTB450B, 17mm boost driver, G7 lens, battery 14500, and a host flashlight which costs less than half a dollar because I bought it at a domestic online store (it costs Rp. 6,500.00 = $0.44, exchange rate of 1 dollar to Rp. 14,886.00)
Tak berjudul54_20220630132252.png
First I press the laser diode into the module 20220615_145511.jpg
Then I put it in a copper heatsink measuring 17.8mm×20mm with a hole with a diameter of 11mm according to the size of the flashlight hole (I turn manually, not CNC, so the results are a bit messy) because the hole is 11mm, I have to turn it a little so that it fits into the heatsink (I turn it first before I attach the laser to the module),after that I soldered the cable of laser module and soldered the cable from the driver direction.
Actually this driver has a potentiometer and is claimed to be able to reach 1.8Amperes, but my multimeter can only read currents up to 250mA and there is no resistor at home 😑Tak berjudul54_20220630132320.png
because the host flashlight is small, about 19mm×95mm, so there is no pill driver, instead there is a spring and black bulkhead as space for cables which I then cut in half to fit the heatsink.
After that I cut the cable a little and then I connected the cable from the laser and driver, then I closed it with a heat shrinking tube.
Tak berjudul54_20220630134802.png
Then I put everything in the host flashlight then give glue a little so that it sticks strong and become a burning laser pointer.

Tak berjudul54_20220630135335.png
because of my limited funds, I ended up using a cheap 14500 battery, the important thing is that it can light up
Tak berjudul54_20220630135519.png
After testing, this laser is very powerful, it can burn wood from 15 feet away and can light a match from the wrong way
Tak berjudul54_20220630140357.png
Screenshot_20220630-142901_Video Player.jpg
 
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Laserin

New member
Joined
Jun 16, 2021
Messages
14
Points
3
I want to ask, can lasers with opposite colors (Red with Cyan, Green with Magenta, and Blue with Yellow) produce a white laser?
I saw a video from youtube about a 505nm 150mW and 660nm 300mW laser whose light is combined with an almost white color, what happens if a red laser (638 or 660) beam is combined with a color of 490nm and above(Cyan)?
 

Laserin

New member
Joined
Jun 16, 2021
Messages
14
Points
3
and this is a photo from my laserTak berjudul54_20220701224619.pngTak berjudul54_20220630143002.pngTak berjudul54_20220630140958.pngTak berjudul54_20220701224724.png For those who ask why the 445/450nm laser looks purple when photographed, it's because the camera can't capture images with accurate colors, I took laser photos with my smartphone and the colors are accurate,I also compared the main camera mode with the ultrawide camera and the results are different (my ultrawide camera is much worse quality than the main camera)
Tak berjudul54_20220630140224.png
and this is the laser beam if you don't have a lens attached
Tak berjudul54_20220701225647.png
 

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Sowee7

Active member
Joined
Feb 1, 2021
Messages
415
Points
43
I want to ask, can lasers with opposite colors (Red with Cyan, Green with Magenta, and Blue with Yellow) produce a white laser?
I saw a video from youtube about a 505nm 150mW and 660nm 300mW laser whose light is combined with an almost white color, what happens if a red laser (638 or 660) beam is combined with a color of 490nm and above(Cyan)?
if you have a 589nm laser (yellow-amber) and combine it with a 488nm laser (light-cyan) you will get a spot that appears white
 

Laserin

New member
Joined
Jun 16, 2021
Messages
14
Points
3
jika Anda memiliki laser 589nm (kuning-kuning) dan menggabungkannya dengan laser 488nm (cahaya-sian) Anda akan mendapatkan tempat yang tampak putih
Thank you for the information
 
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Laserin

New member
Joined
Jun 16, 2021
Messages
14
Points
3
if you have a 589nm laser (yellow-amber) and combine it with a 488nm laser (light-cyan) you will get a spot that appears white
it is an expensive solution, and the diameter of the yellow DPSS laser beam with different Cyan Diodes makes the beam not blend perfectly, there may be a Cyan Laser whose wavelength reaches 495nm
 




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