Homemade Laser Module

329,864

1,696

138

About: I love electronics and all about DIY.

Intro: Homemade Laser Module

You all know that when making a laser device, the most difficult part it's focusing without buying a module.
So here it is, a complet guide about how to make a focusable laser module with parts you have lying around.
Everybody havs heared about aixiz module, but they're expensive, at least if you know you can do something similar for free.

This module is not recomended for laser diodes over 300mW, because lens can melt and it's not the best heatsink.

the goals I wanted to achieve are:
-Make it easily focusable.
-Make it with household parts.
-make it nice and durable.

I'm very happy with the final results, the module acts as heatsink and it can focus the laser to a single burning point or a beam.

Step 1: Materials

The parts you will need are:

-A 6v motor case (best from a dead motor).
-The lens from the sled.
-A 5mm (inner diameter) washer.
-Three long bolts for the motor case.
-Three ballpen springs (1cm).
-A laser diode (no more than 300mW).

Step 2: The Lens Mount

First of all, you'll need to open the motor and extract the rotor, the magnet and the bearing.

When you're done, cut three equidistant notches and round them to the bolts' diameter.

Then, pick the lens from the sled, and carefully put it in the washer hole. Glue it carefully to not drip glue onto the lens; any scratch or glue drop will disturb  the beam.

Step 3: Placing the LD

Solder the wires to the diode ans isolate them with some heatshrink tube.

Now yoh have to press the diode into the case. Inprovise a press and force the diode into the hole.
The hole is 5mm wide and the diode 5.65mm, so, maybe you need to enlarge the hole a bit.

If you add a bit of thermal grease, the heat from the diode will be dissipated better.

Finally, i added a golden brass cover that fits in the motor case and has a 4mm hole for the 3.8mm laser diode.

Step 4: The Bolt Focuser

Now the washer with the lens can move freely from top to bottom, so three springs will keep it while it still being adjustable.
The tree-bolt-adjustment can shape the beam or fix any lens deviation making possible to focus the laser in a single dot.

Step 5: Done!

Now you can save your money and recycle unused parts to make your own laser module for your next laser project.
Remember that this module is not recomended for diodes over 300mW because lens can melt and it is not a good heatsink (it's iron)
If you have questions or upgrade ideas, comment so all can learn about them.

If you like my project, please vote me for the I Could Make That and Weekend Projects Contests.

Weekend Projects Contest

Runner Up in the
Weekend Projects Contest

Share

    Recommendations

    • Electronics Tips & Tricks Challenge

      Electronics Tips & Tricks Challenge
    • Optics Contest

      Optics Contest
    • Plastics Contest

      Plastics Contest

    138 Discussions

    0
    None
    Chikoo DBattleBlimps

    Reply 1 year ago

    You could have googled for sled. Anyway, here the sled means the DVD sled in which the laser diode and the lens are housed.

    0
    None
    GuyW12

    1 year ago

    Your instructions show the lens as "from the sled" but I do not see where you tell us what the "sled" is. Can you define where the lens comes from and how we might find a similar item?

    2 replies
    0
    None
    abuhafssGuyW12

    Reply 1 year ago

    You could have googled for sled. Anyway, here the sled means the DVD sled in which the laser diode and the lens are housed.

    laser309.jpg
    0
    None
    ArifK41

    1 year ago

    wow this is realy interesting but i want to know what kind of lens is used in this module, can we get them from optical store?

    1 reply
    0
    None
    abuhafssArifK41

    Reply 1 year ago

    Arif Sb. the lens could be found in DVD drive's sled.

    0
    None
    RobertB497

    1 year ago

    Nice work is it possible to make a laser cutter to cut 3 to 4 mm metal plate as it would make working with hacksaws, hole saws and files to cut a lot quicker and if a miss cut can ruin the job . I know I could make a bad cut with a laser but it be a lot of time saved making a new project

    0
    None
    0zzy

    3 years ago

    Somone commented about anyone getting injured by a burning lazer well i made one last year as part of an experment all went well until somthing in my garage fell over and it just happened to land on top of my burning lazer and pushing the button that switches the lazer on i was not in my garage at the time but the time i got back to my garage the lazer had set my garage on fire no one got injured but i lost half the contence of my garage costing me just under £8000 so yeah burning lazers ARE VERY DANGEROUS

    1 reply
    0
    None
    systemwiz0zzy

    Reply 2 years ago

    they can be, but ignorance is always dangerous

    0
    None
    Ryzler

    2 years ago

    How do you vote? Just hit favorite?

    I like your projects, very resourceful.

    0
    None
    Tom French

    2 years ago

    Where do you get the lens from?

    0
    None

    Excelente !! También lo estoy intentando. Gracias por el aporte.

    0
    None
    u971

    2 years ago

    Now that's some good recycling right there,thanks for the idea.

    0
    None
    Sailormanenzo

    2 years ago

    And where can i find a lm317 source and a limiter circuit set?

    0
    None
    Sailormanenzo

    2 years ago

    Could you please tell me how to make the driver?

    driver?
    And tell me

    0
    None
    Sailormanenzo

    2 years ago

    1.) What do you use to power it?
    2.) What driver are you using, and how to you get or make one. 3.)
    I see that the diode has three metal points coming out of the ends, which one do you connect the positive and the negative to?

    Thanks for the awesome project and I agree you don't need all these warnings.

    1 reply
    0
    None
    pinomeleanSailormanenzo

    Reply 2 years ago

    I use a lm317 current source as supply, a current limitter circuit set for 150mA for a 200mW laser diode.
    When you already have the driver made, connect the negative lead to the case of the diode and try which other pin is the correct one.

    0
    None
    SamN2

    3 years ago

    what kind of driver are you using. would a lm317 driver work ok for most lasers (with a pot of course)

    also is that the motor from the cd drive?