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DAVID-Laserscanner Forum • View topic - Laser background info
Dear DAVID Community,

In 2016, DAVID and this forum have been integrated into HP Inc.
This forum has been read-only since then, and will be switched off by then end of 2019.

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Laser background info

Which camera works? Where can you buy an adequate laser? And more...

Laser background info

Postby Bertho » Sun Sep 21, 2008 1:35 am

I have been doing some reading on laser line generators and here is some background info that I dug up.
Patents:
4,826,299 Powell: Main patent for generating a line of uniform intensity for the length of the line (not the width!)
6,688,758 Thibault: Using multiple optics to combine pieces to make a longer line (complex).
7,167,322 Chern: A combination of Powell’s design with an extra focusing lens.

If you do not already know it here is how to get full free USA patent listings and PDF printouts:


Extremely expensive stuff can be found at Edmund Optics website.
Warning for sticker shock! It is a good starting reference to see what is available.


For example the Powell line generating lens:

or search for N46-630

High performance laser that with optional line generator head. Claims a line width of 25 microns (1/1000 of an inch):

or search for N54-180

The line generator lens for the above laser:

or search for N54-184

I have not found out how they can make the line so narrow and I do not know the detailed measurement conditions. If anyone has the info I like to know.
Bertho
Bertho
 
Posts: 24
Joined: Fri Sep 05, 2008 1:38 am
Location: Florida, USA

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