Dual Camera Triangulation

Another variation is the use of binocular triangulation. An issue with triangulation sensors (both single point and laser line) has been dropouts in data near steps on the surface, where the laser line is shadowed by the step and can not be seen by a single camera sensor.

To resolve this issue, binocular laser line sensors have two cameras, one on each side of the laser line. Even at steps in the surface, one of the cameras will "see" the laser line, eliminating data dropouts.