Customized CaF2 ZnSe Crystal Glass Optical Window  for Infrared Application

1. Material Composition

• Calcium Fluoride (CaF2) Crystal Glass: A natural or synthetically grown material known for its broad spectral transmission, especially in the ultraviolet (UV) to infrared (IR) range.

• Zinc Selenide (ZnSe) Crystal Glass: A chemically vapor-deposited (CVD) polycrystalline material prized for its exceptional performance in mid- to long-wave infrared (MWIR to LWIR) applications.

• Customized Fabrication: Windows can be tailored in dimensions, thickness, and edge profiles (e.g., round, rectangular, with mounting features) to fit specific system designs.

2. Key Optical & Physical Properties

• Broad Infrared Transmission:

  • CaF2: High transmission from ~0.15 µm (UV) to ~9 µm (IR).

  • ZnSe: Excellent transmission from ~0.6 µm (visible) to ~18 µm (far-IR), with peak performance in the 8–12 µm atmospheric window.

• Low Absorption & Scatter: Minimal signal loss for high-precision IR imaging and sensing.

• Thermal & Mechanical Stability: Suitable for varying operational temperatures and moderate environmental stress.

• Custom Coatings Available: Anti-reflection (AR) coatings can be applied to specific IR bands to maximize transmission and reduce Fresnel reflection.

3. Core Functions

• Infrared Transmission Window: Allows IR radiation to pass through while protecting sensitive internal components (e.g., detectors, sensors, lasers).

• Environmental Barrier: Seals optical systems from dust, moisture, and corrosive gases.

• Thermal Management: Maintains optical performance under thermal cycling in IR systems.

• System Integration: Custom shapes and sizes ensure direct compatibility with existing IR device layouts.

4. Primary Applications

• Thermal Imaging Systems: For military, security, and industrial monitoring cameras.

• Infrared Spectroscopy: In laboratory analyzers, gas detection, and environmental monitoring equipment.

• Laser Systems: As output windows for CO₂ lasers (10.6 µm) and other IR lasers.

• Aerospace & Defense: In missile guidance systems, IR search-and-track (IRST) systems, and satellite sensors.

• Medical & Scientific Instruments: In diagnostic imaging and research setups utilizing IR light.