- Joined
- May 20, 2013
- Messages
- 358
- Points
- 28
Hello! :yh:
Today I finished my 450nm laser! The decision of make a DIY laser was done here and the full project was developed here
I got all the most important parts from China, with Aliexpress. All the parts took about 3 months to arrive!
The LD is a PLTB450 of 1,4W, driven at 1,2A by a LM338.
The module is a 33x33x50mm heatsink with three element glass lens.
Firstly it was intended to be assembled into a wood board, with all the components mounted on it, but since I killed my first LD, was a Nichia NDB7412T of 1W driven at 1A by a LM317.
Original project:
This bad thing freaked me, I was too nervous that I preferred start a new project from scratch. I already received the module at this moment, this helped me design all precisely.
Here the new design:
I got all the parts needed for the driver and assembled a MDF box, the heatsink will be bellow the box:
The LM338 is press-glued into the heatsink, this driver have a current selection switch, that can be 1,2A or 200mA, at 200mA the output is very weak, and safer, can't burn anything when focused, at 1,2A the output is insanely bright, burn anything, and the beam is clearly visible, and beautiful. :beer:
-------------------------
Let's start!
-------------------------
Here the LD:
Instalation:
First run, at 200mA, is a very thin bean, characteristic of PLTB450:
Focused dot, low power:
High power:
I didn't care about divergence, those shots above are at 8~12m.
Here the whole laser assembled:
And here, a beam shot, since my home is under construction, there's a lot of dust in the air:
That's all shots I have, I hope you liked it, that's my first blue laser build.
When night comes, I'll take more beam shots.
:thanks: :beer:
Today I finished my 450nm laser! The decision of make a DIY laser was done here and the full project was developed here
I got all the most important parts from China, with Aliexpress. All the parts took about 3 months to arrive!
The LD is a PLTB450 of 1,4W, driven at 1,2A by a LM338.
The module is a 33x33x50mm heatsink with three element glass lens.
Firstly it was intended to be assembled into a wood board, with all the components mounted on it, but since I killed my first LD, was a Nichia NDB7412T of 1W driven at 1A by a LM317.
Original project:
This bad thing freaked me, I was too nervous that I preferred start a new project from scratch. I already received the module at this moment, this helped me design all precisely.
Here the new design:
I got all the parts needed for the driver and assembled a MDF box, the heatsink will be bellow the box:
The LM338 is press-glued into the heatsink, this driver have a current selection switch, that can be 1,2A or 200mA, at 200mA the output is very weak, and safer, can't burn anything when focused, at 1,2A the output is insanely bright, burn anything, and the beam is clearly visible, and beautiful. :beer:
-------------------------
Let's start!
-------------------------
Here the LD:
Instalation:
First run, at 200mA, is a very thin bean, characteristic of PLTB450:
Focused dot, low power:
High power:
I didn't care about divergence, those shots above are at 8~12m.
Here the whole laser assembled:
And here, a beam shot, since my home is under construction, there's a lot of dust in the air:
That's all shots I have, I hope you liked it, that's my first blue laser build.
When night comes, I'll take more beam shots.
:thanks: :beer:
Last edited:
