ZWB2 (UG1 Equivalent) 365nm UV Pass Filter Glass for High-Intensity UV Lamps

The ZWB2 (UG1) is a premium Ultraviolet Transmission Filter engineered for high-performance UVA applications. As a specialized Narrowband UV Pass Filter, it is optimized for a peak transmission at 365nm, while providing exceptional blocking of visible light. This makes it the industry standard for UV Curing, Fluorescence Analysis, and Non-Destructive Testing (NDT).

Key Technical Specifications

Parameter	Technical Data
Material Type	ZWB2 (Color Filter Glass)
Equivalent Grades	Schott UG1, Hoya U-360, Kopp 9863
Peak Wavelength	365nm
Transmission Range	310nm – 390nm (UVA)
Visible Light Blocking	400nm – 750nm (T < 0.1%)
Available Thickness	1.0mm – 5.0mm (Customizable)
Thermal Stability	High resistance to UV lamp heat

Why Choose ZWB2/UG1 for Your UV System?

1. Precision 365nm Performance

ZWB2 is specifically designed to maximize the output of 365nm UV LEDs and mercury lamps. Unlike the broader ZWB3, ZWB2 provides a sharper cut-off, ensuring that only the desired UVA wavelengths reach your target.

2. Professional Schott & Hoya Replacement

Fully compatible with Schott UG1 and Hoya U-360 standards. It offers identical optical performance for B2B industrial applications, including UV flashlights and laboratory inspection equipment.

3. Superior Heat Resistance

Designed to withstand the thermal stress of high-power UV Lamps. Its robust ionic coloring ensures that the spectral properties remain stable even after prolonged exposure to intense UV radiation.

Core Applications

• Industrial UV Curing: Filtering visible light from high-power curing lamps to improve resin polymerization.

• NDT (Non-Destructive Testing): Enhancing contrast in fluorescent penetrant inspection (FPI).

• Counterfeit Detection: High-contrast verification of banknotes, passports, and security documents.

• Mineralogy & Art Analysis: Identifying fluorescent minerals and verifying historical artifacts.

Frequently Asked Questions (FAQ)

Q: How does ZWB2 (UG1) differ from ZWB1 (UG11) and ZWB3 (UG5)?

A: ZWB2 (UG1) is optimized for 365nm with a narrower passband than ZWB3. While ZWB1 (UG11) is the best choice for deep 254nm UVC, and ZWB3 (UG5) is better for broad-spectrum UV photography, ZWB2 is the “gold standard” for 365nm UVA applications.

Q: Can ZWB2 handle the heat of a 100W UV lamp?

A: Yes, ZWB2 is frequently used in high-power UV systems. We recommend a thickness of 2.0mm or 3.0mm for better thermal durability in industrial lamp setups.

Q: Do you provide custom CNC cutting and polishing?

A: Absolutely. YOUJIA OPTICAL provides custom dimensions, including round discs for UV flashlights and large square plates for industrial conveyors.