The FC40 is a new addition to the Fiber Collimator family that produces a large 23-mm-diameter beam measured at the 1/e2 points. The body is made of stainless steel with adjustable focus that translates without rotation. Unique optical design generates a diffraction-limited Gaussian beam at any distance. We also have smaller collimators and routinely design custom collimators. Wavelengths covered are from 370 to 2100 nm.