Factory Custom High Precision Optical H-K9L Plano Concave Lens for Imaging System

Description

K9 Plano Concave Lenses are plano concave lenses made of K9 optical glass as the base material.K9 optical glass is an excellent optical material with wide spectral transmittance. It has high transmittance in the wavelength range of 350nm to 2000nm, high hardness, and can withstand various physical and chemical stimuli. It has a low content of bubbles and impurities, so it is often used as the base material for various optical components. The plano concave lenses can disperse light, with a negative focal length. One side is flat and the other side is concave, and they are commonly used for beam expansion, projection, and extending the focal length of optical systems.

Specifications

Lens Type:	Plano-Concave
Material:	H-K9L
Diameter:	10 mm
Focal Length:	-100 mm
Edge Thickness, Te:	2.5 mm
Dimension Tolerance:	+0/-0.1mm
Surface Quality:	60-40,40-20,or better
Chamfer:	0.2mmX45°

Got questions about specs? Use the inquiry form to ask.

Download Data Sheet

Features

Superior Optical Material: Uses precision-annealed H-K9L (K9) optical glass (equivalent to BK7) with excellent homogeneity, low internal stress and stable performance
Broad Spectral Transmittance: Covers 350nm~2000nm with over 90% transmittance in visible/NIR bands, low impurities and minimal light loss
Stable Physical & Chemical Properties: High hardness, acid-alkali resistance, moderate thermal expansion, and stable work in -20℃~80℃
High Cost-Effectiveness: Lower cost and easier processing than special materials, suitable for mass production and general optical scenarios
Excellent Surface Quality: Polished surface with minimal scratches and defects, ensuring stable light transmission and no additional light scattering
Wide Size Range: Available in various standard sizes, compatible with most common optical mounting accessories for easy installation

Applications

Laser Systems: Used for laser beam expansion, divergence, and aberration compensation in cutting, welding, LiDAR and other laser-related equipment
Imaging & Display: Applied in projectors, microscopes, telescopes and VR/AR systems for focal length adjustment, distortion correction and virtual imaging
Research & Instruments: Used for beam shaping, spectroscopic experiments and fiber coupling in scientific research and optical instruments
Civil & Industrial Use: Suitable for camera lenses, security monitoring, measuring equipment and medical instruments for aberration correction and optical matching