Germanium Crescent Lens
Germanium Crescent Lens
Germanium Crescent Lens
Germanium Crescent Lens

Germanium Crescent Lens

  • element:Germanium (Ge)
  • purity:High Purity
  • shape:Crescent Shape (Convex and Concave Surfaces)
  • specification:Customizable based on requirements, offering various sizes and thicknesses
  • packaging:Shock-resistant packaging to ensure integrity during transportation

Germanium crescent lens is a precision optical component designed for specialized light refraction, beam manipulation, and enhanced image correction. Manufactured from high-purity germanium, it offers exceptional optical clarity, minimal distortion, and excellent transmission across infrared wavelengths. This uniquely shaped lens is widely used in imaging systems, laser optics, industrial applications, and scientific research, ensuring superior optical performance for advanced optical configurations.

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Product Overview
The Germanium Crescent Lens is a specialized optical element made from high-purity germanium material, featuring a crescent-shaped structure with a convex exterior and concave interior. This design allows the lens to effectively alter the direction and focus of light beams. With outstanding optical performance, particularly in the infrared spectral range, it is widely used in many high-precision optical systems.

Key Features

  • High Transparency and Low Reflectivity: Excellent optical transmission in both visible and infrared ranges, minimizing light loss.
  • High Thermal Stability: Germanium has exceptional thermal stability, making it suitable for use in optical systems operating in high-temperature environments.
  • Environmental Resistance: Germanium offers good inertness to air, water, acids, and alkalis, ensuring stable performance in harsh environmental conditions.
  • High Refractive Index: With a high refractive index, it effectively enhances the numerical aperture (NA) of the system and improves optical performance.
  • Precision Manufacturing: Utilizes precise manufacturing and polishing processes to ensure surface quality and dimensional accuracy.

Applications

  • LiDAR Systems: Used in LiDAR systems as a beam modulation, collimating, or focusing element.
  • Optical Sensors: Widely used in high-precision optical sensors, providing excellent transmission performance.
  • Spectrometers: In infrared spectrometers, it is used for beam focusing and collimation.
  • Infrared Imaging: Due to its excellent transparency and high thermal stability, it is frequently used in thermal imaging systems, especially in demanding environments.
  • Infrared Optical Systems: As a key component in infrared optical systems, it improves imaging quality and system stability.
  • Harsh Environment Applications: The Germanium Crescent Lens is ideal for optical systems used in high-temperature, high-pressure, or other extreme environments.
Optical PropertyValue
Transmission Range2-15 μm
Reflection Loss4.0028 @ 10.6 μm
Absorption Coefficient1.3 × 10⁻³ @ 3.8 μm
3 × 10⁻² @ 10.6 μm
StructureCubic Crystal System
Cleavage Planes<111
Physical PropertyValue
Density5.33 g/cm³
Melting Point936 ℃
Thermal Conductivity58.61 W/(m·K) @ 293K
Thermal Expansion6.1 × 10⁻⁶/K @ 298K
Knoop Hardness780 kg/mm²
Specific Heat Capacity310 J/(kg·K)
Dielectric Constant16.6 @ 9.37 GHz
Young's Modulus102.7 GPa
Shear Modulus67 GPa
Bulk Modulus77.2 GPa
Poisson's Coefficient0.28
Chemical PropertyValue
SolubilityInsoluble
Molecular Weight72.61 g/mol
PropertyValue
Diameter Range2-300mm
Focal Length15-5000mm
Thickness0.12-60mm
Surface Quality80-50, 60-40, 40-20, 20-10, 10-5
Surface Flatnessλ/2, λ/4, λ/8, λ/10
Clear Aperture>90%
CoatingCustomizable
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