635nm FC/APC Fixed Fiber Collimator with NA 0.37 and Focal Length of 10.1mm.

Idealphotonics' fiber collimators are pre-aligned and designed to collimate light emerging from FC/APC connector fibers, with the added feature of minimizing diffraction. These fiber collimators have no moving parts, making them compact and easy to integrate into existing setups. Due to the chromatic aberration caused by the aspherical lens, the effective focal length (EFL) is wavelength-dependent. The design wavelength corresponds to the wavelength that aligns with the ideal divergence angle of the beam. Collimators at certain design wavelengths may have different collimated beam diameters. When connected to specific single-mode fiber jumpers, they can collimate light at the design wavelength. Additionally, the aspherical lenses are coated with anti-reflection coatings on both sides to minimize surface reflection (please refer to the anti-reflection coating curve label). For certain applications, these collimators can also be used at other wavelengths within the anti-reflection coating's wavelength range. Please refer to the theoretical divergence angle curves for each collimator to determine if it suits your application. These collimators are stable within a temperature range from -40°C to 93°C. Please note that these collimators are not suitable for use in a vacuum. For custom alignment wavelengths, operating temperatures, or vacuum compatibility, please contact us for customizatio