A Simple Setup Provides Backlighting for Tight Spaces
The Backlight fluoreSheet is used to provide affordable, indirect illumination for machine vision applications. Unlike other technologies, it doesn’t require power input. A backlighting effect is created when an orange Backlight fluoreSheet is coupled with a blue LED light and an Orange Bandpass Filter.
The fluoreSheet emits an orange fluorescence when a blue LED shines on it from the front. The Bandpass Filter captures the orange emission and blocks the blue LED excitation, resulting in a bright white diffuse background within a monochrome image. (Figure: Midwest Optical Systems)
The fluoreSheet emits an orange fluorescence when a blue LED shines on it from the front. The Bandpass Filter captures the orange emission and blocks the blue LED excitation, resulting in a bright white diffuse background within a monochrome image. The Backlight fluoreSheet, which is only 0.2mm, is available in three sizes (ranging from 216x280mm to 280x432mm). It can also be cut to fit within small, narrow spaces or attached together to provide a streamlined option for backlighting in more spacious settings. Lightweight and equipped with an adhesive backing, the Backlight fluoreSheet can work in diverse configurations, even if it must be placed on the side or underside of an object or adhered to a rotating part. It is flexible, durable, water-resistant and tear-resistant.
Image: Midwest Optical Systems
The Backlight fluoreSheet is „an interesting, new solution“ to traditional illumination problems within machine vision, Lars Fermum, Chief Instructor of Stemmer Imaging, said. „[In] one quite popular way to inspect, you have to do some measuring,“. For this purpose, backlighting must be diffuse and homogeneous. While LED light plates can meet those requirements, the Backlight fluoreSheet can achieve the same effect, but is far more adaptable and cost effective. It’s peel-and-stick design is also simple and easy to use. The fluoreSheet can be placed on curved surfaces or even spinning turntables, providing an easy-to-use, versatile backlighting solution, Fermum noted. „It saves a lot of space behind the [imaged] object,“ he added. The featherlike weight of the Backlight fluoreSheet makes it an ideal option for machine vision environments that are unable to accommodate the size and scale of many other backlighting technologies.
