Plano-Convex Lens, Si, AR Coating T10: 2000-5000 nm OLC241366-T10M
This JCOPTIX plano-convex lens is made from single-crystal silicon (Si), a common core substrate for mid- and long-wave infrared systems. It supports highly transmitting infrared imaging and laser delivery, with excellent heat conduction to suppress irradiation-induced thermal distortion and thermal lensing during prolonged, stable high-power continuous mid-infrared operation. Its moderate infrared refractive index provides stable, uniform optical performance across the core 2.0-5.0 μm range. Excellent mechanical strength and deformation resistance, lower density than conventional infrared materials, and strong thermal stability support lightweight designs and demanding infrared paths under temperature changes. JCOPTIX offers diameters of 12.7-25.4 mm with antireflection coatings for 2000-5000 nm. Average reflection below 1.25% per surface improves transmission. Contact technical support for other custom requirements.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Optical element material | Silicon (Si) |
| Diameter | 25.4 mm |
| Clear Aperture Dimension [of Diameter] | > 90% of Diameter |
| Operating Wavelength | 2000-5000 nm |
| Focal Length | 200.0 mm |
| Back focal length | 198.8 mm |
| Optical power | 5 |
| Design Wavelength | 4000 nm |
| Refractive Index | 3.43 |
| Radius | 485.1 mm |
| Center Thickness | 4.0 mm |
| Edge Thickness | 3.83 mm |
| Coating | Antireflection coating (both surfaces) |
| Antireflection Coating R_avg / R_abs [@ 2000-5000 nm；0° AOI] | R_avg < 1.25%, R_abs < 2.5% @ 2000-5000 nm (0° AOI) |
| Diameter Tolerance | +0.0/-0.1 mm |
| Thickness Tolerance | ±0.1 mm |
| Focal Length Tolerance | ±1% |
| Decentration | < 3 arcmin |
| Surface figure PV value | λ/2 |
| Spherical surface fringe count | 2 |
| Surface quality (scratch/dig) | 40/20 |
| Mechanical housing | Standard lens tube SM1L6-A |
| Surface Flatness [@633 nm] | λ/2 |
Key Features
Datasheet
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