ZWB1/ZWB2/ZWB3 UV Transmitting Glass | ZWB Filter Manufacturer – YOUJIA OPTICAL

150*50mm ZWB1/ZWB2/ZWB3 UV filter High transmittance and scratch resistance Photoelectric / Scientific research / Photography

 

Professional Grade ZWB Ultraviolet Transmitting Glass (ZWB1, ZWB2, ZWB3)

YOUJIA OPTICAL specializes in high-quality ZWB filters, a specialized black-colored optical glass designed to efficiently transmit ultraviolet radiation while effectively absorbing visible light. Whether you are developing biomedical analytical instruments, UV curing systems, or delivery drone sensors, our ZWB series provides the precision cut-off and high transmission your project demands.

Key Features & Capabilities:

• High UV Transmittance: Peak transmission reaching over 85% at specific UV wavelengths (254nm, 312nm, 365nm).

• Excellent Visible Light Blocking: Deep blocking OD (Optical Density) for superior signal-to-noise ratio in optical sensors.

• Custom Fabrication: Available in customized thicknesses (0.5mm to 10mm) and shapes (round, square, or step-drilled).

• Durability: High resistance to solarization and thermal shock.

Technical Comparison & Selection:

• ZWB1 (UG11 equivalent): Best for deep UV applications (narrow band).

• ZWB2 (UG1 equivalent): The most common choice for 365nm UV torches and fluorescence analysis.

• ZWB3 (UG5 equivalent): Offers a wider transmission band into the near-infrared.

 

Application areas:

Optoelectronic communication: In some ultraviolet communication systems, it is used to filter out ultraviolet rays of a specific wavelength to ensure the accurate transmission of communication signals.

Ultraviolet light source equipment: Such as ultraviolet lamps, ultraviolet disinfection equipment, etc., can filter out unnecessary wavelength components, make the output ultraviolet rays purer, and improve the monochromaticity and application effect of ultraviolet light sources.

Ultraviolet photography: Help photographers filter out visible light when shooting, and only let ultraviolet rays pass through, so as to obtain special ultraviolet photography effects, which are used in scientific research, criminal investigation and other fields.

Fluorescence analysis: In experiments such as mineral fluorescence analysis, it is used in conjunction with a fluorescent excitation light source to only allow ultraviolet rays of a specific wavelength to excite the sample to produce fluorescence, while blocking other interfering light, thereby improving the sensitivity and accuracy of fluorescence detection.

• Fluorescence Inspection: For NDT (Non-Destructive Testing) and forensic analysis.

• Medical Diagnostics: Biochemical analysis and skin treatment devices.

• Drone & Aerospace: UV sensors for environmental monitoring and obstacle avoidance.

• UV Sterilization: Monitoring UVC intensity in water and air purification systems.

ZWB Filter (ZWB1/ZWB2/ZWB3) | Precision UV Bandpass Glass

YOUJIA OPTICAL manufactures high-performance ZWB filters (including ZWB1, ZWB2, and ZWB3), which are specialized ultraviolet black glass filters designed for optimal UV transmittance and visible light absorption. Whether you require standard dimensions or custom optical specifications, our direct-factory capabilities ensure flexible lead times and reliable quality.

International Standards Cross-Reference Table

To help optical engineers easily replace international brands, our ZWB series correlates with Schott and Hoya standards as follows:

YOUJIA OPTICAL Grade	Peak Wavelength	Schott Equivalent	Hoya Equivalent	Primary Applications
ZWB1	254 nm (UVC)	UG5	U-330	Sterilization, Mineralogy, Deep UV Sensors
ZWB2	365 nm (UVA)	UG1	U-340	NDT Inspection, Forensics, Pure 365nm UV Flashlights
ZWB3	313 nm (UVB)	UG11	U-320	Medical Phototherapy, Biotechnological Analysis

Key Capabilities & Specifications

• Available Shapes: Round discs, square plates, custom-shaped windows, and stepped steps.
• Thickness Range: 1.0mm, 1.5mm, 2.0mm, 3.0mm, or customized based on your optical path design.
• Surface Quality: 60/40, 40/20 scratch-dig for precision scientific research.
• Dimensional Tolerance: Up to +/-0.05mm.

Frequently Asked Questions for Optical Engineers (FAQ)

Q1: Why is a ZWB2 filter essential for pure 365nm UV applications?

A1: Standard UV LEDs or light sources inherently emit a portion of visible glare (purple or white light) that can easily drown out weak fluorescent signals. A ZWB2 filter serves to absorb this unwanted visible noise completely, ensuring that only high-purity 365nm ultraviolet wavelength reaches the target, maximizing fluorescence contrast.

Q2: Can YOUJIA OPTICAL customize ZWB filters for specific industrial laser or sensor systems?

A2: Yes. As a direct manufacturer, we offer comprehensive customization services including custom coating, tight dimensional tolerances, and bespoke geometrical shapes to seamlessly fit your sensor housings, machine vision cameras, or handheld NDT devices.

Need a Custom Size or Transmission Curve?

Our optical engineers usually respond within 12 hours with a full technical proposal.

 

For detailed material comparisons and international equivalents, visit our

Optical Material Selection Guide
.