Silicon lenses are widely used in infrared applications, requiring optical elements with high thermal conductivity and low weight. Silicon plano-convex lenses are ideal for optical systems that collect, focus, or collimate light in near-infrared, short-wave infrared (SWIR), medium-wave infrared (MWIR), or long-wave infrared (LWIR) spectra.
Excellent Light Transmission:
Silicon lenses have high transmittance in the visible and near-infrared spectral ranges.
High Refractive Index:
Compared to other materials, silicon lenses have a higher refractive index, which can effectively reduce the thickness of the lens.
Low Dispersion:
Silicon lenses exhibit minimal dispersion effects, reducing light scattering and improving image quality.
Good Aberration Correction:
They can effectively eliminate aberrations, enhancing image clarity.
Superior Machinability:
Silicon lenses are easy to process, and the processed surfaces have high quality, with minimal risk of fogging.
| Silicon Lenses | COMMERCIAL GRADE | PRECISION GRADE |
| Diameter Tolerance(mm) | 0/-0.1 | 0 |
| Center Thickness(mm) | ±0.20 | ±0.10 |
| Radius (%) | ±2% | ±1% |
| Focal Length Tolerance (%) | <2% | <0.5% |
| Cosmetic(MIL-C-13830A) | 80-50 / 60-40 | 40-20 |
| Figure Tolerance in λ(Pow/irreg) | 5(2) | 3(0.5) |
| Centration (Arc min) | 5' | 1' |
| Coating (R% avg) | <1.5%@3-5um or upon customized request | |
Infrared Imaging and Surveillance Systems:
Silicon lenses perform exceptionally well in infrared imaging and surveillance systems, providing high-definition infrared images.
Optical Instruments:
In optical instruments such as telescopes and microscopes, silicon lenses offer high-quality optical performance.
Missile Optical Systems:
In the development of infrared air-to-air missiles, silicon lenses are an important optical material due to their excellent transmittance and stability.
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