High Precision MgF2 Optical Dome Magnesium Fluoride Ball Dome for IR Imaging Systems

Name: High Precision MgF2 Optical Dome Magnesium Fluoride Ball Dome for IR Imaging Systems
Brand: Henan UM Optics Ltd
Availability: InStock

Description

MgF₂ optical dome is a high-performance infrared optical component manufactured from thermal‑pressed polycrystalline MgF₂, designed for mid-wave infrared (MWIR) imaging, aerospace, infrared seekers, and high‑temperature detection systems. It features exceptional broadband transmission from deep ultraviolet to mid‑infrared (120 nm – 7 μm), with transmittance above 90% in the critical 3–6.5 μm MWIR band. This dome delivers outstanding mechanical strength, high hardness, excellent thermal stability, and resistance to thermal shock, making it ideal for harsh environments such as high‑speed aerospace and industrial monitoring. It also offers good chemical stability, waterproofing, and corrosion resistance for long‑term reliable use.

Specifications

Material:	MgF2
Diameter:	150 mm
Edge Thickness, Te:	4 mm
Lens Type:	Plano-Convex
Diameter Tolerance:	+0/-0.1mm
Thickness Tolerance:	±0.1mm
Surface Quality:	60-40, 40-20, or better
Surface Accuracy:	1/4 λ

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Features

Broadband Infrared Transparency: Uncoated MgF₂ domes offer high transmittance from 0.12 μm to 7.5 μm, with >90% transmission in the critical 3–6.5 μm mid-wave infrared (MWIR) band, ideal for infrared imaging and guidance systems
Extreme Thermal Stability: With a melting point of ~1263°C and low thermal expansion, MgF₂ domes maintain optical integrity under rapid temperature changes and high-heat conditions, such as high-speed aerospace flight
Superior Mechanical Durability: Featuring a Knoop hardness of ~1350 kg/mm² and high impact resistance, these domes withstand harsh environments, including sand erosion, vibration, and mechanical stress, ensuring long-term reliability
Precision Manufacturing: Produced via vacuum thermal pressing and precision polishing, MgF₂ domes deliver tight dimensional tolerances, smooth surface finishes, and minimal beam distortion for high-performance optical systems

Applications

Aerospace & Defense: Used as infrared seeker domes in missile guidance systems, protecting sensitive detectors while enabling clear MWIR transmission under extreme aerodynamic and thermal conditions
Thermal Imaging & Surveillance: Serves as protective windows for MWIR thermal cameras, night-vision devices, and border security systems, providing clear, undistorted infrared imaging in diverse environments
Industrial & Scientific Research: Applied in high-temperature infrared spectroscopy, thermal monitoring equipment, and laser systems, where broadband transmission and chemical stability are critical for accurate measurements
Marine & Harsh Environment Sensors: Deployed in marine infrared detection and offshore monitoring systems, leveraging MgF₂'s resistance to water, corrosion, and salt spray for reliable performance
Astronomy & Space Exploration: Used in space-based infrared telescopes and satellite sensors, where low weight, high thermal stability, and broadband transparency are essential for deep-space observations