Background suppression can be used to verify the presence of a part that is directly ahead or on top of another reflective surface. The sensor is very sensitive at this point and much less sensitive before and beyond this focal point. Detection of objects at a fixed distance. A fixed focus sensor can be used in some applications to detect an object at the focal point and ignore it when it is in front of or behind the focal point. In some applications, it is important to detect the presence of a printing mark on a continuous web of wrapping material.
Visual spot makes it easier to focus exactly.
Wide Angle Diffuse Wide angle diffuse sensors project the light source and detection area of the receiver over a wide area. A wide angle diffuse sensor can detect the presence of extremely thin strands of thread or other material positioned close to the sensor. Ignoring holes or imperfections in targets. Because wide angle diffuse sensors can sense over a broad area, they can ignore small holes or imperfections in diffuse objects, detecting products not accurately positioned. Reliable sensing of shiny radius objects, such as cans, and tolerance of shiny surfaces that vibrate, such as metal foil webs, because wide angle diffuse sensors are not sensitive to the angle of view to a highly reflective surface.