Rod Lens – High-Precision Fiber Coupling & Micro Optical Rod Lenses

⭐ Overview

Rod lenses are miniature cylindrical optical components used to collimate, focus, guide, or shape light in fiber coupling, medical imaging, illumination systems and micro optics.
We manufacture high-precision rod lenses in BK7, fused silica, sapphire, CaF₂, ZnSe and custom materials.

Suitable for UV–VIS–NIR–IR（250nm–5000nm） applications.

⭐ Key Features

High-precision diameter tolerance（±0.005–0.01 mm）
Excellent surface polish（10-5 / 20-10）
Superior transmission and low scattering
Uniform cylindrical geometry
Optional AR coatings for specific wavelengths
Custom micro lens production available

⭐ Available Materials

Material	Features	Application
BK7 / N-BK7	High clarity, stable	General optics
UV Fused Silica	High laser damage threshold	High-power, UV
Sapphire	Extreme hardness, scratch-resistant	Endoscopy
CaF₂ / MgF₂	Low absorption, UV–IR	Imaging & sensing
ZnSe / ZnS	Mid-IR, CO₂ lasers	IR beam shaping
PMMA / Polycarbonate	Lightweight	Consumer devices

⭐ Applications

Fiber Coupling Systems
Laser Collimation & Beam Shaping
Medical Endoscopes（内窥镜成像）
Illumination & LED Light Guides
Micro-Optics Modules
Barcode Scanners & Miniature Imaging
Optical Sensors & Probes

Rod lenses are especially effective for light guiding and beam shaping in a single-axis geometry.

⭐ Customization Options

Diameter: φ0.8 mm – φ20 mm
Length: 2 mm – 200 mm
End Faces: Polished / Ground / Custom angle
Surface Quality: 10-5 / 20-10 / 40-20
Coatings:
- AR 266 / 355 / 532 / 808 / 980 / 1064 / 1310 / 1550 nm
- Broadband AR
- IR coatings for 3–5 μm / 8–12 μm
Material Options: BK7 / FS / Sapphire / CaF₂ / ZnSe
End-shape Options: Flat / Spherical / Custom radius

⭐ Technical Specifications

Parameter	Range
Diameter	0.8–20 mm
Diameter Tolerance	±0.005–0.01 mm
Length	2–200 mm
Surface Quality	10-5 / 20-10
Flatness	λ/4–λ/10
Parallelism	<3 arcmin
Coating	AR/BBAR/IR/DLC