Thorlabs, Inc. Cosine Correctors

At Thorlabs, we constantly reinforce our desire to serve at the pleasure of our customers. From this comes our desire to be connected to our industry in a way that far exceeds what would typically be expected of a vendor. Thorlabs lives this core principle by seeking to enhance, at every turn, the productivity of our customers. We have developed a culture that constantly seeks your input; many of you have experienced this first hand, as a large portion of our product offerings are customer inspired. Others may note that a website feature exists because you let us know that it would make you more productive. A direct outcome of this customer focus is our utmost respect for your time. This drives us to question everything we do. It informs our product design, shapes our approach to manufacturing, and provides clarity for our customer service department. We constantly ask ourselves how we can make the entire process of finding, understanding, purchasing, and using a product more efficient. By saving you time, we enhance your productivity, which allows us all to foster the continued forward movement of photonics. Thorlabs' Cosine Correctors are diffusers designed to couple light into or out of SMA-connectorized fiber optics. The correctors feature a diffuser in a tightly toleranced anodized aluminum housing. The input side of the CCSA2 is equipped with SM05 (0.535"-40) threads, while that of the CCSA1 is smooth. The diffuser in a cosine corrector allows light to be collected from up to a 180° angle with the diffuser surface. This minimizes issues caused by sampling geometry inherent to other devices such as bare fiber optics or collimating lenses. As such, these diffuser packages are ideal for use in spectral measurements or as irradiance probes.