QBH collimators are available in a range of focal lengths from F30 to F200, with popular specifications including F40, F50, F60, F75, F85, F90, F100, F115, F125, F135, F150, and F200. Designed with adjustable divergence angles, these collimators are crafted from imported quartz material and feature high-damage-threshold coatings. With an overall transmittance exceeding 99.5%, they ensure exceptional stability and durability, making them a reliable choice for diverse industrial applications.