External Coaxial Illumination

Image: External Coaxial Illumination

The goal with coaxial illumination is to get the reflected rays back into the lens system. When using the last lens as a condenser, the downward ray is limited by the diameter of the lens.

If a much larger field coverage is required, some applications utilize an "under the lens" coaxial system, as pictured above. The obvious drawback to this type of system is that, to get a much larger downward ray, the illuminator optics also become large and this reduces the available clearance under the lens.

The Uni-Lite Illuminators below, reduce clearances by 88.9mm (3.5 inches) and 50.8mm (2 inches) respectively, and are used only with the Zoom 6000, 12X, and Precise Eye.

Image: External Coaxial Illumination