Durable CaF2 Baf2 Znse Optical Windows Lens for Long Wave Infrared Camera & Night Vision

Durable CaF2 Baf2 Znse Optical Windows Lens for Long Wave Infrared Camera & Night Vision

1. Core Materials & Infrared Specialty:

• Materials: This product encompasses three key infrared-transmitting materials:

  • Calcium Fluoride (CaF2): For mid to long-wave IR, with excellent laser damage threshold.

  • Barium Fluoride (BaF2): For broad-band IR from mid to far-infrared, resistant to harsh environments.

  • Zinc Selenide (ZnSe): The primary material for Long Wave Infrared (LWIR, 8-14μm), offering exceptional transmission and low absorption loss.

• Form: Fabricated as flat optical windows or simple lenses (planar-concave/convex).

2. Defining Physical & Optical Properties:

• High Infrared Transmission: All three materials offer superior transparency in the critical LWIR atmospheric window, allowing thermal radiation to pass through with minimal loss.

• Durability & Environmental Resistance: Engineered to be chemically resistant and withstand harsh outdoor conditions, including moisture and abrasion. ZnSe often receives a durable diamond-like carbon (DLC) coating for protection.

• Low Dispersion & Aberration: Provide clear, undistorted thermal imaging by minimizing optical errors in the IR spectrum.

• Thermal Stability: Maintain optical performance across a wide operational temperature range.

3. Primary Function in a System:

• Protective Entrance Window: Serves as the first external element, physically sealing and protecting sensitive infrared camera or night vision detector arrays from dust, moisture, and physical damage.

• Critical Spectral Filter: Its material properties inherently act as a bandpass filter, primarily allowing LWIR radiation (body heat, thermal signatures) to enter while blocking unwanted shorter wavelengths.

• Pressure & Environmental Barrier: Maintains the internal vacuum or controlled atmosphere of the detector dewar or housing.

4. Target Applications & Industries:

• Thermal Imaging & LWIR Cameras: For military, industrial, security, and scientific thermal cameras.

• Night Vision Systems: In driver enhancement systems (DEVS), surveillance, and navigation equipment.

• Industrial Process Monitoring: For non-contact temperature measurement, predictive maintenance, and furnace viewing.

• Aerospace & Defense: In missile guidance seekers, forward-looking infrared (FLIR) systems, and surveillance pods.

• Research & Spectroscopy: In FTIR spectrometers and laboratory IR analysis.