The ZnS, BaF₂, Ge and Silicon Aspherical Lenses are core infrared optical elements that address the limitations of traditional spherical lenses in infrared systems. By incorporating precision aspherical surfaces, these lenses effectively reduce optical aberration, improve light transmission efficiency and simplify optical system design-making them ideal for thermal cameras, infrared search-and-track systems, laser rangefinders and aerospace remote sensing equipment.
Manufactured via ultra-precision grinding, polishing and diamond turning technologies, each lens undergoes rigorous surface accuracy and coating quality inspection to ensure consistent performance. Material selection is optimized for target spectral bands:
- ZnS/BaF₂: Ideal for MWIR (3μm–5μm) and LWIR (8μm–14μm) applications with high transmittance.
- Germanium (Ge): High refractive index for compact LWIR system design.
- Silicon: Excellent thermal conductivity and mechanical strength for high-power laser and SWIR applications.
Technical Specification
Part of the parameters is provided for reference only. For further information and full specifications, please consult our sales representatives.
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1. Visible Light Aspheric Lens |
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Technical Index |
Specific Specifications |
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Processing Material |
Microcrystal, Quartz, ULE, SC and various visible light optical materials |
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Covered Aperture |
Within Φ600mm |
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Surface Accuracy |
RMS better than 100 (wave number); Typical measured value: PV≤0.122wave, RMS≤0.009wave |
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Curved Surface Type |
Various quadric aspheric surfaces, high-order aspheric surfaces and free-form surfaces such as hyperboloid and paraboloid |
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Application Waveband |
Visible light band (0.38~0.9μm) |
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Processing Capability |
Full-process numerical control processing for visible light and common aperture; capable of developing coaxial/Off-axis aspheric devices |
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2. Infrared Aspheric Lens |
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Technical Index |
Specific Specifications |
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Processing Material |
Infrared special materials such as Monocrystalline Silicon, Germanium, Zinc Selenide (ZnS), Calcium Fluoride (CaF₂) series glass |
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Covered Aperture |
Within Φ400mm |
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Surface Accuracy |
Rt0.2μm; Typical measured value: PV99%/PV99≤0.038/0.018wvs |
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Curved Surface Type |
Various quadric aspheric surfaces, high-order aspheric surfaces, aspheric surfaces and free-form surfaces such as hyperboloid and paraboloid |
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Application Waveband |
Full infrared band (0.9~12μm, including SWIR/MWIR/LWIR) |
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Processing Equipment |
Equipped with ultra-precision single-point diamond lathe, suitable for processing infrared hard and brittle materials |
Application Scenarios
- Defense & Security: Thermal imaging cameras, infrared search-and-track systems, laser rangefinders.
- Aerospace: Satellite remote sensing, airborne surveillance, missile guidance optics.
- Industrial Inspection: Infrared non-destructive testing, thermal monitoring, gas detection systems.
- Scientific Research: Infrared spectrometers, astronomical imaging, laser physics experiments.
- Medical Devices: Infrared diagnostic imaging, thermal therapy equipment.
Key Functions & Advantages
- Aspherical Aberration Correction: Eliminates spherical aberration for sharper, higher-resolution infrared imaging.
- Infrared Material Optimization: Tailored material selection for maximum transmittance across target spectral bands.
- High Environmental Stability: Resists extreme temperatures, vibration and chemical exposure for reliable field performance.
- System Miniaturization: Aspherical design reduces component count and system size, enabling compact infrared systems.
- Customization Flexibility: Bespoke dimensions, focal lengths and coatings to meet specific application requirements.
Product Series & Availability
● Precision Machining Capability
Capable of machining shaft parts, rotary table parts and complex structural parts. Complete and reliable process assurance measures, as well as sophisticated processing and inspection methods are available for precision mechanical manufacturing.
● Precision Optical Manufacturing Capability
Capable of manufacturing high-precision lenses for visible light and infrared applications, high-precision prisms and high-precision aspherical components. The company can mass-produce various high-precision optical components including spherical, planar, prismatic, cylindrical and aspherical elements covering the visible to infrared wavebands.
● Precision Opto-Mechanical Assembly Capability
Capable of high-precision shafting assembly and precision optical lens system assembly for visible light and infrared applications. Possesses capabilities in system development, optical testing and integrated alignment.
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