Coated monocrystalline silicon lenses for optical imaging Custom
silicon components for optical lenses
A coated silicon lens is an optical element that is coated with a
special film on the surface of a silicon lens to improve its
optical performance. Silicon material has excellent light
transmission in infrared band, but the surface reflectivity is
high, through coating can effectively reduce the reflection loss,
enhance the light transmittance, and improve the anti-reflection,
anti-wear and other properties. Coated silicon lens is widely used
in infrared optical system, laser technology, thermal imaging and
other fields.
Silicon lenses Features
* Silicon material has excellent transmittance in the infrared band
of 1.2-7μm, but the surface reflectivity is high (about 30%). By plating
anti-reflection film (such as MgF₂, SiO₂, etc.), the reflectivity can be reduced to less than 1%, significantly improving the transmittance.
* Coated silicon lenses perform well in near-infrared (NIR), mid-infrared (MIR) and far-infrared (FIR) bands, suitable for multi-band optical systems.
* The coating design can be optimized for specific wavelengths or bands to reduce stray
light interference and improve imaging quality.
* The silicon material itself has high hardness, and the coating further enhances the surface wear resistance and prolongs the service life.
* The thermal expansion coefficient of silicon is low, and the
coating can still maintain stable performance in high temperature environment, suitable for high temperature application scenarios.
* Coating can improve the moisture resistance and corrosion resistance of silicon lens, adapt to harsh environment.
Silicon lenses data
| |
Material | |
Size | | |
Size Tolerance | | |
Clear Aperture | | |
Surface Quality | | |
Centration | | |
Focal Length Tolerance | | |
Coating | Uncoated, AR, BBAR, Reflective |
Silicon lenses application
1. Coated silicon lenses are used in thermal imaging cameras to focus infrared radiation and generate clear thermal images,
which are widely used in security monitoring, industrial testing and medical diagnosis.
2. In laser processing, communications and medical equipment,
coated silicon lenses are used to focus and collimate laser beams, and coating can reduce energy loss and improve system efficiency.
3. In infrared spectroscopy and Fourier transform infrared spectroscopy (FTIR), coated silicon lenses are used to transmit and focus infrared
light, ensuring high-precision spectral analysis.
4. In infrared detection systems for satellites, missiles and aircraft, coated silicon lenses are used for target detection and tracking, and their high light transmittance and thermal stability are key
advantages.
5. In industrial infrared sensors and inspection equipment, coated silicon lenses are used for non-contact temperature
measurement, gas analysis and material inspection.
6. In infrared optical experiments and research, coated silicon lenses are used to build optical systems to
support high-precision experimental requirements.
Silicon lenses display
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