🌌 Infrared (IR) Lenses for Precision Sensing & Imaging

High-Performance IR Lens Solutions – From Custom Design to Volume Manufacturing

🔍 What Are IR Lenses?

Infrared (IR) lenses are specially engineered optical components designed to operate in the infrared spectrum—typically from 0.75 µm to 14 µm, including NIR, SWIR, MWIR, and LWIR bands. These lenses are essential in applications such as:

• 🔬 Thermal imaging & night vision

• 🧫 Medical diagnostics & life sciences

• 🚗 Driver assistance & autonomous vehicles

• 🔧 Industrial inspection & predictive maintenance

• 🌐 Security surveillance & perimeter monitoring

Yighen offers a full spectrum of custom and standard IR lens assemblies, optimized for image quality, thermal stability, and wavelength-specific transmission.

🛠️ Yighen’s Unique Advantage:

Unlike most suppliers, Yighen combines deep optical design expertise with in-house ultra-precision infrared lens fabrication, ensuring:

• ✔️ Complete control from optical concept to component delivery

• ✔️ Shorter lead times and higher system integration success

• ✔️ Tailored performance for each sensor and application scenario

🔬 Our team includes PhDs from NTU Singapore, Strasbourg University, and Zhejiang University, with experience in freeform optics, microstructure design, and IR material modeling. We bridge simulation, tolerance analysis, and diamond-turning into one closed-loop process.

⚙️ Optical & Mechanical Capabilities

All IR lenses undergo MTF analysis, centering verification, and environmental stress testing.

🧪 Precision IR Lens Fabrication @ Yighen

Yighen’s Dongguan factory integrates diamond turning machines, ultra-precision grinding, and optical metrology dedicated to IR optics:

• Toshiba ULC-100F(S)

  • Pv: 0.010 μm / Ra: 0.001 μm

  • Ideal for Germanium & chalcogenide lenses

• NanoTech 250 & NanoForm 200

  • P-V ≤0.1 μm / Ra ≤2 nm

  • Achieves sub-micron tolerance across complex IR lens profiles

• Toshiba ULG Series

  • Grinding for ZnSe, ZnS & silicon blanks with P-V 0.03μm

• Cleanroom assembly + interferometric testing available

📦 Standard & Custom IR Lenses

🔹 Standard Products

Available in C-mount, M42, and custom flange types for integration with:

• Thermal imagers

• Multi-spectral cameras

• SWIR line-scan and area-scan detectors

🔸 Custom Design Services

Need long-wave IR zoom? Athermalized MWIR optics? IR beam expanders?
Yighen can co-engineer a solution with you, including:

• Athermalized compound lenses for temperature stability

• Low-F/# optics for high sensitivity systems

• Custom coatings for spectral shaping or laser rejection

• Hybrid optical paths (VIS+IR / SWIR+MWIR fusion)

🌍 Industries & Applications

📈 Case Study: MWIR Lens for Semiconductor Thermal Mapping

Client: Asia-based chip fab equipment OEM
Challenge: Precise 3–5 μm imaging at 45°C with low lens drift
Solution: Yighen 25 mm MWIR lens with chalcogenide + Ge + athermal design
Outcome: 0.95 MTF @ spatial freq of 60 lp/mm – 20% better than off-the-shelf solution

🧾 Certifications & Services

• ✅ ISO 9001 & ISO 13485 Certified

• 🔬 Optical assembly, lens bonding, and metrology in-house

• 📄 Full lens drawings, 3D STEP files, MTF reports available

• 🔄 Reverse engineering support for legacy IR lenses

🌐 Build Your IR Optical System with Yighen

From thermal imaging and gas detection to autonomous navigation and scientific instrumentation, Yighen provides precision-engineered infrared lenses covering the MWIR, LWIR, and broadband ranges.

📩 Request a Custom IR Lens
Our team can design IR lenses based on your sensor specs, FOV requirements, and operating wavelength (2–14μm), with optimized coatings and materials like Ge, ZnSe, and chalcogenide glass.

📘 Download Drawings & Coating Curves
Head to the Downloads page for IR-specific files, including emissivity specs, MTF charts, and compatibility with uncooled and cooled sensors.

🏢 Learn About Yighen
Explore our expertise in IR lens design, diamond turning, and precision metrology at About Us.

🔗 Related Content

• 🌒 SWIR Imaging Lenses
  Short-wave IR lenses for night vision and surveillance applications.

• 🔍 Optical Coating Services
  Anti-reflection and high-durability coatings for IR windows and lenses.

• 🧪 Optical Metrology & Testing
  Measurement services for IR wavefront, transmission, and alignment accuracy.

• 🧩 Opto-Mechanical Modules
  Complete lens assemblies including barrels and thermal compensators.

• 🔬 Optical Engineering Services
  We co-design systems to match IR focal planes and rugged environmental specs.