Broadband Fiber Collimator Using a 90° off-axis parabolic mirror, the focal length of this mirror remains constant over a wide wavelength range. Therefore, it is the ideal choice for collimating wide spectral wavelength light when precise focal adjustment is required, serving as a collimated multi-color light source or coupling device. A silver coating is applied to the lens surface to enhance the output efficiency within the wavelength range of 450 nm to 20 um. This collimator can be equipped with FC/PC, FC/APC, or Sma905 connectors.