Germanium Lenses

• Company: Shanghai Optics Inc.
• Type: Lenses
• Diameter / Dimension: 2mm - 100mm
• Applications: Astronomy, Biomedical/Medical, Communications, Industrial, Military, Scientific Research, Other
• Thickness: +0.01/-0.03 mm
• Flatness: 1/2 Lambda
• Parallelism: < 3 arc min
• Polished surface: 20-10
• Bevel: protective bevel
• Transmission rate: >47.5%@3.7-4.8um

Germanium lenses are most commonly used in mid-wave infrared (MWIR) and long-wave infrared (LWIR) devices or systems for many applications including thermal imaging, IR spectroscopy, IR laser collimation, etc. We offer high quality Ge optical components with custom coatings including Ge Lenses, Ge Aspherical Lenses, Ge Windows, and Ge Filters.

Applications:
IR Laser Systems
Long Pass Filters
Rugged Environments

Shanghai Optics offers customizable germanium windows in sizes from 2 to 100 mm, with coatings of 2-14 µm or 8-12 µm (BBAR or DLC/BBAR) available on request. Standard flatness is ½ lambda, ensuring minimal deviation from an ideal surface, with a parallelism deviation of less than 3 arc minutes for reduced image distortion. Surface finish is rated at 20-10 with no digs, and the transmission rate is over 47.5% at 3.7-4.8 µm. Custom specifications can be accommodated to meet specific application needs.