How does a laser pointer head make shapes and patterns?

Subject: How does a laser pointer head make shapes and patterns?

Date: Tue Oct 5 16:54:47 2004
Posted by Aaron
Grade level: nonaligned School: No school entered.
City: Philadelphia State/Province: PA Country: USA
Area of science: Engineering
ID: 1097013287.Eg

Message:


The little head that you can screw on your laser point makes interesting 
shapes and even complex patterns.  To make the beam appear as "I Love You!" 
for instance.  

How does this work?  Is there a way for an amateur scientist to create 
makeshift heads like this?

Re: How does a laser pointer head make shapes and patterns?

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