K9 Plano-Concave Lens, 25mm Dia, 40mm Focal Length | SWIR AR Coating with Ravg<0.5% @1000~1650nm | for Beam Expansion, Collimation & Imaging Systems

The HENGYANGGUANGXUE K9 Plano-Concave Lens is a key optical component for refining system performance. It acts as a “system optimizer” by providing controlled beam divergence and correcting optical aberrations. Essential for enhancing beam management, it is reliably integrated into devices like laser expanders, fiber collimators, and imaging systems to ensure target performance. Manufactured from premium glass with precision engineering and rigorous inspection, it guarantees consistent optical quality and supports tailored integration solutions.

• Substrate: H-K9L(K9)
• Diavmeter (Ø): 25mm & Effective Focal Length (EFL): -40mm
• Center Thickness: 2.00mm & Edge Thickness: 6.21mm
• Radius of Curvature: -20.65 & Back Focal Length: -40.98
• K9 plano-concave lenses are made from premium optical glass for excellent clarity and stability. They precisely diverge light to correct aberrations and expand beams, featuring a fine finish and optional anti-reflective coatings. These reliable lenses are widely used in laser, projection, and imaging systems.