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Pocket Single Image Laser Projector

Project a single image at long distance !

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In a nutshell, this is a handheld laser projector. The laser bounces off a few mirrors before passing through film of the message to be projected by a lens. Both can be repositioned to tweak size and focus.

I'm working on :

multi-colors capabilities. 

CNC milled case in aluminium.

Rechargeable lipo battery.

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TheThirdMan wrote 11/20/2018 at 13:28 point

Hi,

Thank you all for your interest in this project and your great ideas.

I'm working a lot on this project and I'd like to focus on the most important features as possible.

If you have 55sec to fill this form it would be great :

https://pocket-laser-projector.typeform.com/to/BQ4rXn

Thanks a lot

TheThirdMan

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AlexC wrote 09/10/2018 at 14:51 point

Would an LCD with the backing removed work well in place of the static slide?

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AlexC wrote 09/10/2018 at 14:48 point

Regular 2nd surface mirrors can be modified into first surface mirrors by dissolving the opaque backing paint with paint thinners. The back side would then become the front surface. Here's an example of a diy that shows you how to do that: https://www.youtube.com/watch?v=IaEaaeajCSI

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D Kearns wrote 09/07/2018 at 18:52 point

Another source for small first surface mirrors would be the platters from a laptop hard drive.  They are not true optical quality but I've used them to bounce a beam around with little diffraction.  They are not metal but some glasslike substance.  Very hard to "cut" but controlled breaks can give nice sized pieces.

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Wrrr wrote 09/07/2018 at 06:56 point

Hya. You could repurpose the mirrors used in any flatbed scanner. These are 'direct' mirrors, i.e. the reflecting side is on top, not behind glass. There mostly 2 long strips of these in each scanner. Score and snap...

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Shih Wei Chieh wrote 09/07/2018 at 05:56 point

what is the reason to extend the laser path longer? thanks.

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DL101 wrote 09/06/2018 at 20:57 point

Are those mirrors regular bits of mirrors or have you sourced them from somewhere specific?

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Xasin wrote 09/06/2018 at 17:14 point

Ah, now this is a cool idea! I wonder what adjustments would need to be made for different colors of laser.

Speaking of which, you should look at a dichroic crystal to combine different colors of laser, shone through different images (same image, representing a different color channel) for a full color projector.

Also, may I inquire where you got your lenses from? They look like the perfect size to be added to my lasertag project, I just haven't been able to find a good vendor yet.

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Artem Kashkanov wrote 07/20/2018 at 19:11 point

Wow! I like this one:)  

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