A telecentric lens provides constant magnification over the entire depth of field, which eliminates perspective error and parallax. This is critical for accurate 3D profiling and [url=http://ttps%253A%252f%25Evolv.e.l.U.Pc@Haedongacademy.org/phpinfo.php?a[]=%3Ca%20href=http://mtthub.org/groups/the-role-of-enclosures-in-protecting-machine-vision-components/%3Ehttp://mtthub.org/groups/the-role-of-enclosures-in-protecting-machine-vision-components/%3C/a%3E%3Cmeta%20http-equiv=refresh%20content=0;url=http://mtthub.org/groups/the-role-of-enclosures-in-protecting-machine-vision-components/%20/%3E]vision system components[/url] when measuring dimensions precisely.