Infrared Silicon Lens
Infrared Silicon Lenses are precision optical components designed for MWIR and LWIR infrared focusing, imaging and beam control applications in thermal imaging systems, infrared cameras and optical sensing equipment. Manufactured from high-purity silicon (Si) substrates with excellent infrared transmission, high refractive index and stable thermal performance, these lenses provide efficient infrared focusing and reliable imaging performance. Chenyu Optics manufactures infrared silicon lenses uncoated or with IR AR, MWIR AR, LWIR AR and DLC coatings.
Infrared Silicon Lens Overview
Infrared Silicon Lenses are precision optical components designed for MWIR and LWIR infrared focusing, imaging and beam control applications in thermal imaging systems, infrared cameras and optical sensing equipment.
By using high-purity silicon substrates with excellent infrared transmission, high refractive index and stable thermal performance, infrared silicon lenses provide efficient infrared focusing, low optical loss and reliable imaging performance. They are widely used in thermal imaging systems, infrared cameras, night vision equipment, infrared sensors and scientific optical instruments where high-performance infrared transmission and optical precision are required.
Chenyu Optics supports custom infrared silicon lens manufacturing according to customer drawings, including custom focal length, diameter and coating design for prototype and repeat production.
Key Advantages of Infrared Silicon Lens
Thermal Imaging & Infrared Camera Systems
Infrared silicon lenses are widely used for efficient MWIR and LWIR focusing in thermal imaging systems, infrared cameras and optical sensing equipment.
Typical Specifications of Infrared Silicon Lens
| Material | Silicon (Si) / Custom Infrared Optical Substrate Available |
|---|---|
| Optical Function | Focusing, imaging and controlling infrared wavelengths |
| Coating Options | Uncoated / IR AR Coating / Broadband IR AR Coating / MWIR AR Coating / LWIR AR Coating / DLC Coating / Custom Optical Coating |
| Optical Characteristics | High infrared transmission, high refractive index, low dispersion, excellent thermal stability, stable infrared optical performance |
| Transmission Range | Approx. 1.2 μm – 15 μm |
| Refractive Index | Approx. 3.42 @ 4 μm |
| Focal Length | Custom |
| Diameter | Custom |
| Thickness | Custom |
| Surface Quality | 60-40 to 10-5, depending on requirement |
| Flatness | λ/4 to λ/10, depending on requirement |
| Clear Aperture | Available |
| Angle of Incidence (AOI) | Custom |
Lens Geometry & Optical Principle
Why Choose Chenyu Optics for Infrared Silicon Lens
Chenyu Optics focuses on drawing-based precision infrared lens manufacturing for thermal imaging, infrared camera and optical sensing systems. We support prototype verification, small-batch production and repeat manufacturing for non-standard infrared silicon lenses.
Manufacturing Capability for Infrared Silicon Lens
Precision Polishing
Precise optical processing and surface polishing to achieve accurate focal performance and stability in silicon substrates.
Infrared Coating
IR AR, MWIR AR, LWIR AR and DLC coating options for thermal imaging and infrared sensing applications.
Inspection & Packaging
Dimensional inspection, surface review, infrared optical testing and protective packaging before shipment.
Custom Manufacturing Options for Infrared Silicon Lens
Dimensions & Focal Length
Custom focal length and diameter can be manufactured according to customer drawings and infrared optical design requirements.
Surface & Optical Quality
Surface accuracy and surface quality can be selected according to imaging performance requirements, supported by silicon's high refractive index and thermal stability.
Coating & Wavelength Design
Uncoated, IR AR, MWIR AR, LWIR AR, DLC and custom optical coatings can be specified for thermal imaging, sensing or camera applications.
Silicon Lens Material Comparison
| Silicon (Si) | Germanium (Ge) | Zinc Selenide (ZnSe) | Chalcogenide Glass | |
|---|---|---|---|---|
| Transmission | MWIR to LWIR, approx. 1.2 – 15 μm | MWIR to LWIR, approx. 2 – 14 μm | Visible to LWIR, approx. 0.6 – 16 μm | MWIR to LWIR, approx. 1 – 12 μm (composition dependent) |
| Refractive Index | Approx. 3.42 @ 4 μm | Approx. 4.0 @ 10 μm | Approx. 2.4 @ 10 μm | Approx. 2.5 – 2.8, composition dependent |
| Mechanical Notes | Lightweight, cost-effective, good thermal stability | Denser and heavier, higher cost, sensitive to temperature drift | Good mechanical strength, widely used in CO2 laser optics | Suited to precision molded lenses, lower hardness |
| Typical Use | Thermal imaging, LWIR cameras, cost-sensitive IR systems | High-performance thermal imaging and MWIR/LWIR optics | CO2 laser optics, MWIR/LWIR imaging | Compact molded IR lenses for consumer thermal devices |
Applications of Infrared Silicon Lens
Thermal Imaging Systems
Efficient focusing for thermal imaging applications.
Infrared Cameras
Precision imaging optics for infrared camera systems.
MWIR & LWIR Optical Systems
Stable mid- and long-wave infrared optical performance.
Night Vision Systems
Reliable infrared focusing for night vision equipment.
Infrared Sensors
Precision optics for infrared sensor assemblies.
Thermal Inspection Systems
Stable infrared imaging for thermal inspection equipment.
Infrared Silicon Lens FAQ
What is the function of an infrared silicon lens?
An infrared silicon lens is used to focus, image and transmit infrared wavelengths in thermal imaging, infrared cameras and optical sensing systems.
Why is silicon used for infrared lenses?
Silicon provides excellent MWIR and LWIR transmission, high refractive index, low dispersion, high thermal stability and reliable optical performance for infrared applications.
What coating options are available for infrared silicon lenses?
Infrared silicon lenses can be manufactured with IR AR coatings, MWIR AR coatings, LWIR AR coatings, DLC coatings and custom optical coatings for different wavelength requirements.
Can custom infrared silicon lenses be manufactured?
Yes. Chenyu Optics provides customized silicon lenses with different focal lengths, diameters, thicknesses, surface quality, coatings and optical specifications according to system requirements.
What information should I provide for a quotation?
Please provide focal length, diameter, thickness, surface quality, coating requirement, quantity and drawing if available.
Where can I learn more about infrared lens design?
Additional information on infrared lens design can be found from Edmund Optics.
Related Products for Infrared Silicon Lens
Need Custom Infrared Silicon Lenses?
Send us your drawing, focal length, diameter and coating requirements. Chenyu Optics will review the optical and mechanical specifications and provide a suitable infrared silicon lens manufacturing suggestion.