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Homemade Scanning Laser Color Projector/TV

 
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sltvm2007
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Joined: 27 Apr 2009
Posts: 5

PostPosted: Mon Apr 27, 2009 7:34 am    Post subject: Homemade Scanning Laser Color Projector/TV Reply with quote

Homemade Scanning Laser Color Projector and TV

In this DIY project, by means of two mirrors (which can be tilted about two perpendicular axis) we deflect the laser beam so as to scan a rectangular screen and modulate the laser source to obtain a colored image on the screen. We donít make use of sophisticated devices such as MEMS micromirror and acousto-optical-modulators.


Max. speed attained by the fast axis mirror is 25 KHz. That corresponds to 50000 back and fro lines per second.
In order to make use of the conventional video signal, the resonant frequency of the present scanner is tuned to 15625Hz.
Therefore number scanned lines in each frame is 625. Refresh rate is 25 frames (50 fields) per second.

Fast axis is elecromagnetically driven.
Laser modulation is analog.

http://www.youtube.com/watch?v=NTpwygS8baY

http://www.youtube.com/watch?v=DmCzjv7Q20s

http://www.youtube.com/watch?v=HleDvzLk7SI


Last edited by sltvm2007 on Sun Aug 22, 2010 3:01 am; edited 11 times in total
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Alan
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Joined: 29 Jan 2006
Posts: 1399
Location: Winnipeg, MB

PostPosted: Thu Apr 30, 2009 10:44 am    Post subject: Reply with quote

Wow that is a cool project. Do you have any additional pictures and build detail?
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sltvm2007
Semi Newbie


Joined: 27 Apr 2009
Posts: 5

PostPosted: Thu Apr 30, 2009 11:49 am    Post subject: Reply with quote

I cannot upload images to this forum.
You may visit album of "sltvm2007" in the forum Photonlexicon.
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Alan
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Joined: 29 Jan 2006
Posts: 1399
Location: Winnipeg, MB

PostPosted: Thu Apr 30, 2009 11:57 am    Post subject: Reply with quote

I found this
http://www.photonlexicon.com/forums/album.php?albumid=104

Do you have any pictures of the circuit and a description of that?

You can see instructions on the Hacked Gadgets Gallery here.
http://forum.hackedgadgets.com/viewtopic.php?t=134
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sltvm2007
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Joined: 27 Apr 2009
Posts: 5

PostPosted: Mon Dec 20, 2010 10:39 am    Post subject: Re: Homemade Scanning Laser Color Projector/TV Reply with quote

edit: For all details : http://laserpointerforums.com/f47/homemade-scanning-laser-color-projector-tv-32628.html
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