DLPA078B February 2017 – September 2021 DLP160AP , DLP160CP , DLP2000 , DLP2010 , DLP230GP , DLP230KP , DLP230NP , DLP3010 , DLP3310 , DLP4710 , DLP471TP , DLPC3420 , DLPC3421
The distance at which a projection lens is focused is referred to as the “plane of focus.” While the focus is best at the plane of focus, the focus is often acceptable for some distance in front of and behind the plane of focus. This distance range over which the focus is acceptable is referred to as the “focus depth”.
A long depth of focus is generally desirable, especially for portable applications such as pico projections built in to smartphones or tablets. The longer the depth of focus, the more the product can be moved relative to the surface and still be considered in focus.