780nm lasers from eBay - are thay useful? 
Posted: 21 June 2009 05:48 PM   [ Ignore ]
Rank
Joined  2009-06-21
Total Posts:  9
New Member

hello,

my first question here, as i want to build my own mt tablesmile
i have chosen to go for with llp technique so i would like to ask if any of these lasers could be good for this and which one?

http://foxyurl.com/6T7
http://foxyurl.com/6T8 (the even sell it in pack of 3 or 6 - http://foxyurl.com/6T9)

thanks for help.

Profile
 
 
Posted: 22 June 2009 03:32 AM   [ Ignore ]   [ # 1 ]
Rank
Joined  2009-03-30
Total Posts:  17
New Member

I think 5mW is too low power! depends how big is your screen!! bye

Profile
 
 
Posted: 22 June 2009 06:06 AM   [ Ignore ]   [ # 2 ]
Avatar
Rank
Joined  2008-09-13
Total Posts:  68
New Member

if you are looking for the big screen size then you should go with the 10mw power

 Signature 

Sudhanshu Gautam,
UG Student,
Electronics & Instrumentation engineering

Our Multitouch Blog
http://www.sparsh-i.com

Profile
 
 
Posted: 22 June 2009 06:06 AM   [ Ignore ]   [ # 3 ]
Rank
Joined  2009-06-21
Total Posts:  9
New Member

i was thinking about 19” to 20”. and what would be enough power for about 40”? thanks

Profile
 
 
Posted: 22 June 2009 06:09 AM   [ Ignore ]   [ # 4 ]
Avatar
Rank
Joined  2008-09-13
Total Posts:  68
New Member

if you are looking for the 19’’to 20’’ then I think 5mw is enough power and even for the 40’’ also you have to use 4 lasers

 Signature 

Sudhanshu Gautam,
UG Student,
Electronics & Instrumentation engineering

Our Multitouch Blog
http://www.sparsh-i.com

Profile
 
 
Posted: 22 June 2009 06:21 AM   [ Ignore ]   [ # 5 ]
Rank
Joined  2009-06-21
Total Posts:  9
New Member

thanks a lot. and yes there gonna be 4 lasers even for that <20” versions

Profile
 
 
   
 
 
‹‹ some questions about leds      LLP questions ››