Core Features & Shielding Mechanism
Lead glass delivers superior radiation shielding via a high lead oxide content (20%–70%), with a density ranging from 4.8 to 6.2 g/cm³ — roughly double that of standard glass. It blocks radiation mainly through the photoelectric effect and Compton scattering generated by lead atoms; a 5 mm thick sheet can block over 90% of low‑energy X‑rays and gamma rays (≤100 kV). Additionally, it boasts outstanding optical performance: visible light transmittance exceeds 85% with a distortion rate below 5%. An anti‑reflective coating can be applied to reduce glare, enabling clear, undistorted real‑time viewing in radiation‑exposed areas.
Typical Applications & Technical Solutions
Observation windows for interventional operating rooms: 15–20 mm thick embedded lead glass walls, achieving ≥99% shielding efficiency against 120 kV scattered radiation.
CT/MRI control rooms: Curved lead glass windows (0.5–1.0 mmPb lead equivalent), compliant with the national standard GBZ 130-2020 for radiology control room shielding.
Nuclear medicine dispensing workstations: Custom lead glass shielding enclosures with reserved manipulator openings, limiting the surface dose rate to less than 2 μSv/h and providing effective β and γ radiation isolation.
Mobile DR radiation shielding: Height-adjustable lead glass screens (standard size 60×120 cm), cutting operator radiation exposure by 90%.
Animal PET radiotherapy rooms: Laminated explosion-proof lead glass cabin doors, allowing continuous animal observation while delivering reliable radiation protection.
Sophisticated Manufacturing Techniques
Vacuum Melting & Forming: Lead oxide and silicate raw materials are fused at 1200°C in a vacuum environment to remove air bubbles and achieve a homogeneous material composition.
Surface Reinforcement: Tempering treatment raises the hardness to Mohs 4.5, and an extra polyurethane coating is applied to boost scratch resistance.
Composite Construction：
Sandwich Structure: A layered design combining lead glass and polyethylene anti-shatter layers, delivering impact resistance exceeding 50 J.
Curved Hot Bending: Thermal forming creates curved shapes up to 150°, ideal for curved viewing windows in DSA operating rooms and similar settings.
Advantages compared to traditional protective materials
Visibility breakthrough: Solve the pain point of concrete/lead plate completely blocking the field of vision and realize direct monitoring of the operation area.
Space efficiency: The thickness is 60% less than that of concrete wall under the same protection, saving medical space.
Flexible installation: Supports multiple installation methods such as embedded, mobile, and hanging, and the convenience of transformation is far better than fixed lead plate.
Long-term economic efficiency: Lifespan> 20 years and maintenance-free, while lead plate needs regular anti-oxidation treatment.
Cleaning guidelines: Hydrofluoric acid and strong alkaline cleaning agents are forbidden for use, as they may erode the internal structural layer of the glass. Neutral cleaning solutions are highly recommended for daily wiping and surface maintenance.
Anti-collision protection measures: During transportation and on-site installation, corner protection with wooden frames is mandatory. This effective measure avoids tiny cracks and structural damage caused by external impact and collision.
Regular performance inspection: The radiation shielding attenuation rate and visible light transmittance should be inspected every two years. Replacement is required once the light transmittance decreases by more than 10%.
Product Overview: Lead glass features core advantages of transparent radiation protection, perfectly integrating efficient radiation shielding and clear real-time visual observation. With customizable parameters including thickness, radian and composite structure, paired with stable physical properties and long service life, it serves as an indispensable protective component for high-risk environments. Widely applied in modern radiological diagnosis, treatment and nuclear industry scenarios, it greatly enhances on-site operational safety and overall working efficiency.
