Coherent has introduced the StingRay range of diode-laser based line generators, which deliver enhanced flexibility, output optimisation capabilities, and extended lifetimes. The products will enable the construction of faster and more accurate machine vision systems that utilise 3D triangulation. The StingRay series mates a diode laser with high performance electronics and precision, refractive optics for collimation and line generation covering the widest available range of fan angles. They also incorporate optional diffractive elements for creating complex output patterns. Stingray models are available with output powers as high as 200mW and at key wavelengths throughout the 450nm to 1550nm spectral range, including the popular 450nm, 520nm, 635nm, and 660nm lines.
StingRay lasers are the first to feature a line intensity non-uniformity down to ±5 per cent in a standard product. This high uniformity reduces the need for image post-processing, and translates directly into increased measurement speed and dimensional accuracy. StingRay lasers are also unique in offering external user focusable optics, which allow the laser line to be precisely optimised for the exact distance over which it is projected.
Additionally, the StingRay’s optomechanical design permits 'dynamic line balancing', enabling simple correction of any intensity bias in configurations where the laser must be used at off axis illumination angles. To further enhance usability, Stingray lasers also include an internal 'health monitor' that indicates when a diode is approaching end of life, thus allowing for planned replacement, and avoiding production downtime due to an unexpected failure.