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Need a suggestions to generate multiple lines for laser pointer

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nim4eng

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I need to know ,is there any uniform laser line modules which they have multiple lines.i need a laser that should have generated more than one line.about 25 lines(all are vertical and parallel) is very good.are there anyone who can tell me how to build that meets above requirement.please can you tell me..
Thank you.
 





A fan grating placed after a line generator. What is the application?
 
i need this kind of laser for my 3d face recognition system.this laser is pointed front of the face with multiple laser lines.these laser lines are horizontal and parallel.so i need to generate multiple lines in one laser.
can you tell me how to generate multiple lines using a one laser??
 
thank you for giving me a suggetion,, and are there any ideas without using diffraction grating??
 
You could use scanner .. ie. motorized mirrors. But that would be more expensive and more complicated.
 
i am going to use a NIR laser , so can that laser also generate the multiple lines using diffraction grating??
 
^Yes. Standard gratings/line generators will work with any laser between 360nm and 1500nm and possibly outside that. Pick a grating with a lower line-count (lines/mm) to get more lines to project. Did that make sense? :undecided:
 
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