Product Introduction

C-lens is a cylindrical rod micro spherical lens widely used for fiber collimation and optical coupling in optical communication systems. One end is a precision spherical surface for beam focusing, while the other end is processed with an angled facet, typically 8°, to suppress back reflection. It converts divergent light emitted from single-mode fiber into collimated parallel beams for passive optical assemblies.

Features

• Precision spherical surface and angled end facet

• Low insertion loss and stable beam collimating performance

• Available AR coatings for 1310 nm and 1550 nm telecom bands

• Customizable diameter, rod length and facet angle

• Consistent dimensional accuracy for mass assembly

Application

Commonly integrated into fiber collimators, optical isolators, optical circulators, fiber switches and other passive optical components in fiber communication.

Specifications

• Component Shape: Cylindrical rod lens (C-lens)

• Substrate: N-SF11 / Fused Silica

• Wavelength Range: 1260 nm – 1650 nm

• Surface Quality: 40-20 Scratch-Dig

• Typical Wedge Angle: 8° (0° optional)

• Diameter Tolerance: +0.005 / -0.01 mm

• Clear Aperture: >95% of surface

• Coating Options: AR coating for 1310 nm / 1550 nm

• Size Range: Dia.1.0 mm ~ Dia.3.0 mm

Note: All specifications listed are typical values. Custom specifications are available upon request.