1.Product Descriptions:
| Characteristics: | ZWB3 Ultraviolet Glass | | Type: | Selective Absorption Type Glass | | Center Wavelength(CWL): | 334nm | | Peak Transmittance(%) : | ≥86.0% @334nm | | Shape: | Rectangle* | | Color: | Black | | Surface Quality: | 60/40 scratch-dig | | Dimension(mm): | customized | | Thickness(mm): | 1mm or 2mm or customized** | | Substrate: | Absorptive Color Filter Glass | | Remark： * Option: Rectangle,Square or customized.
** Optional thickness: 0.55/0.7/1/2/3mm |
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2. Spectral measurement – ZWB3 Ultraviolet Glass:
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| Picture 1: ZWB3 UV Filter – 334nm Ultraviolet Glass Spectral measurement |
3.ZWB Ultraviolet Glass Characteristics:
| 1. Basic Characteristics Table |
| Type | Thickness (mm) | Color Coordinates (A/2856K) | Color Coordinates | Chemical Stability | α×10⁻⁷ | ND | Tg (℃) | Ts (℃) | S |
| (D65) |
| | x | y | Y | x | y | Y | Dₐ | Dw |
| ZWB1 | 1 | 0.734 | 0.266 | 0.1 | 0.726 | 0.262 | 0 | 4 | 4 | 94 | 1.557 | 529 | 588 | 2.87 |
| ZWB2 | 1 | 0.532 | 0.171 | 0.9 | 0.231 | 0.032 | 0.4 | 2 | 2 | 97 | 1.52 | 515 | 589 | 2.65 |
| ZWB3 | 2 | 0.711 | 0.256 | 0.3 | 0.538 | 0.176 | 0.1 | 2 | 3 | 85 | 1.526 | 527 | 616 | 2.63 |
| 2. Technical Requirements Table |
| Type | Thickness (mm) | 254 (nm) | 280(nm) | 313(nm) | 334(nm) | Bubble | Stripe | Stress |
| ZWB1 | 1 | | ≥50.0 | ≥81.0 | | C | 4 | 4 |
| ZWB2 | 1 | | | ≥38.0 | | C | 4 | 3 |
| ZWB3 | 2 | ≥50.0 | | | ≥86.0 | C | 4 | 4 |
4. Comparative Type List Color Filter Glass for reference:
| Model | Former USSR | FCHOTT | HOYA |
| ZWB1 | YΦC2 | UG11 | U-340 |
| ZWB2 | YΦC3 | UG1 | U-360 |
| ZWB3 | YΦC1 | UG5 | U-330 |
5.What is typical application for ZWB3 Ultraviolet Glass?
| Application Area | Specific Use Cases | Primary Function |
| Ultraviolet (UV) Sensing and Fluorescence Analysis | Fluorescence microscopy, forensic analysis, mineralogy and gemology, UV curing process monitoring | Selectively transmit ultraviolet radiation while strongly absorbing most of the visible light spectrum. |
| Optical Instrumentation and Filtering | spectrophotometer components, medical and scientific sensors, special effects lighting, | Ensure only the desired UV band is transmitted for measurement, stimulation, or effect generation. |
| Industrial Quality Control and Security | Banknote & Document verification, industrial inspection | Enable non-destructive inspection and authentication by creating a controlled UV illumination environment, highlighting features invisible to the naked eye. |
| Stage & Studio Lighting | Stage lighting systems | Creates specific orange/amber lighting atmospheres and visual effects. |
| Industrial & Scientific | Machine vision, industrial automation sensors, security monitoring, laser systems, photoelectric detectors | Suppresses ambient light interference, highlights features, improves detection accuracy and signal-to-noise ratio. |
What is the difference between Color Filter Glass and Interference coated filter glass?
Interference filters offer much sharper cut-offs and higher performance, allowing precise selection of very specific wavelengths.
Colored glass is generally more affordable, but with limit options and broader transmission bands.
In short, interference filters are for high-precision applications, while color filter glass is often used for simpler, cost-effective filtering.
| (1) Colored Glass Filters | (2) Interference Filters |
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| Color Glass Filters work by absorption. Dyes or metal ions inside the glass absorb unwanted light colors, allowing only the desired color light to pass through. They are more simple and only some certain wavelengths. | Interference Filters, or thin-film filters, work by using wave interference. Multiple ultra-thin layers on a substrate are designed to reflect unwanted wavelengths, while constructively let the desire wavelengths to pass through. |
Shenzhen Hengda Liyuan Optoelectronics is focus on optical coating and optical filters solution, can provide but cut-off type glass and selective Absorption type glass.
- Cut-off Type Glass：Ultraviolet Glass, Golden(Yellow) Glass, Red Glass, Infrared Glass
- Selective Absorption Type Glass: Ultraviolet Glass, Violet Glass, Green Glass, Golden(Yellow)Glass, Red Glass, Infrared Glass, Protective Glass and Heat absorbing Glass.
ZWB1 UV Filter, Selective absorption type, 313nm Ultraviolet Glass
ZWB2 UV Filter, Selective absorption type, 365nm Ultraviolet Glass
