UV Transmission Filters

In the evolving landscape of optical technology, KUPO Optics' UV Transmission Filters stand at the forefront, offering unparalleled precision and efficiency in manipulating ultraviolet light. These advanced filters are expertly crafted to transmit a specific range of UV wavelengths, meticulously filtering out unwanted spectral regions, thus tailoring the UV light to the exact needs of various applications. With their high UV transmission rates, these filters are not just components; they are precise tools that unlock the full potential of UV light across a spectrum of professional and industrial uses.

KUPO's commitment to quality is evident in every aspect of these filters, from their consistent performance across batches to their exceptional optical properties. They uniquely combine high UV transmission with the ability to reflect visible light, a feature that elevates their utility in innovative applications such as coaxial light sources and stage lighting, where the specific manipulation of UV light is essential. These filters are indispensable in medical diagnostics and therapies, where precise UV wavelengths are crucial, and in tanning beds, balancing efficacy with safety.
The UV Transmission Filters by KUPO Optics are a testament to the company's mastery in wavelength control. They are not merely filters; they are the embodiment of cutting-edge optical technology, tailored to meet the demanding standards of professionals who seek reliability, precision, and versatility. Whether it’s for creating stunning visual effects in stage lighting, advancing medical treatments, or ensuring the safety and effectiveness of tanning beds, KUPO's UV Transmission Filters are the definitive choice for harnessing the power of ultraviolet light.

The Applications of UV Transmission Filters

UV transmission filters are expertly engineered optical components that play an essential role in applications requiring the precise management of ultraviolet light. Unlike filters that block UV light, these specialized filters are designed to allow UV light to pass through while blocking other parts of the light spectrum, like visible light. This unique characteristic is critical for applications that utilize UV light for analysis, processing, or creating visual effects. Their use is widespread, reaching into industries such as forensic analysis, art restoration, semiconductor manufacturing, and more, proving their importance in enhancing functionality and enabling innovation in UV-related applications.
Forensic and Scientific Analysis
UV transmission filters are vital in forensic science for evidence gathering and analysis. They are used with UV light sources to illuminate biological materials such as blood, bodily fluids, and fingerprints that are invisible to the naked eye. In scientific research, these filters are used in conjunction with UV microscopes for the analysis of DNA, proteins, and other biological specimens. By isolating the UV spectrum, researchers can observe fluorescence emitted by certain compounds, enabling them to identify and quantify various substances.
Machine Vision
In machine vision applications, UV transmission filters are used together with UV lighting to extract specific features of an object that are undetectable in normal lighting conditions. They are often used for quality control purposes, such as inspecting the surface coatings on products or detecting microcracks or other defects in materials that fluoresce under UV light. The high contrast images obtained with UV filters help automate defect detection, greatly improving process efficiency and reliability.
Stage Lighting
UV transmission filters are an exciting addition to stage lighting, commonly known for creating "black light" effects that make white and fluorescent colors vividly stand out against a darkened backdrop. They are a favorite in theatrical productions, concerts, and themed attractions where special effects are used to enhance the visual experience for the audience.
Art Restoration and Examination
Art restoration experts use UV transmission filters to inspect paintings and other artwork for repairs, restorations, and authenticity. When artwork is exposed to UV light, varnishes, and certain pigments fluoresce distinctively, revealing overpainting, touch-ups, and other modifications that are invisible under standard lighting conditions. This technique allows restorers to accurately assess the artwork's condition and authenticity without damaging the pieces.
Semiconductor Manufacturing
In semiconductor manufacturing, UV transmission filters are used in photolithography processes where UV light is crucial for etching microcircuit patterns onto wafers. The filters ensure that only the desired UV wavelengths required for the photoreactive process are employed, significantly reducing the risk of unwanted exposure and ensuring the precision of semiconductor devices.
Medical Therapy
In medical therapy, particularly phototherapy, UV transmission filters are employed to treat skin conditions such as psoriasis, vitiligo, and eczema. The filters allow for the controlled use of UVA or UVB wavelengths to treat affected skin areas while minimizing exposure to other, potentially harmful wavelengths of light.
Astronomy and Astrophotography
Astronomers and astrophotographers use UV transmission filters to study and capture images of the sun and other celestial bodies. These filters allow the observation and imaging of UV emissions and phenomena that cannot be seen with filters that allow visible light, providing insights into solar activity and the composition of stars and other astronomical objects.
Water and Air Purification
In water and air purification systems, UV transmission filters are used to protect UV lamps from dirt and debris. The filters ensure that maximum UV light reaches the contaminants, effectively sterilizing drinking water, aquariums, and air to remove bacteria, viruses, and other pathogens.
UV transmission filters facilitate a multitude of processes where the unique properties of UV light are exploited to enhance visual experiences, improve product quality, further scientific knowledge, and protect health. As technology evolves and the demand for precision and efficiency increases, the applications for UV transmission filters are set to expand, strengthening their position as a vital tool in contemporary industry practices.
KUPO Dichroic/ UV Transmission Filters


● Perfect piece-to-piece, batch-to-batch consistency
● High UV transmission
● Visible light reflection

Examples of Applications

● Fluorescent Effect (Stage Lighting)
● Medical
● Tanning Bed

General Specification

● Available Substrate: See Glass Substrates under Products Page
● Humidity, Adhesion, and Abrasion: MIL-M-13508C

UV Transmission Filter (Type 4)

KUPO Dichroic/ UV Transmission Filter

UV Transmission Filter (Type 4)

315 - 390nm Tavg>80%
T50% at 400+/-5nm
410 - 700nm Tavg<0.5%

UV Transmission Filter (Type 5)

KUPO Dichroic/ UV Transmission Filter

UV Transmission Filter (Type 5)

355 - 440nm Tavg>90%
T50% at 460+/-10nm
500 - 700nm Tavg<1.0%

UV Transmission Filter (330/380)

KUPO Dichroic/ UV Transmission Filter

UV Transmission Filter (330/380)

300 - 320nm Tavg<1.0%
340 - 370nm Tavg>80%
400 - 700nm Tavg<1.0%
T50% at 330/380 +/-10nm

UV Transmission Filter (330/490)

KUPO Dichroic/ UV Transmission Filter

UV Transmission Filter (330/490)

300 - 320nm Tavg<1.0%
340 - 480nm Tavg>80%
520 - 700nm Tavg<1.0%
T50% at 330/490 +/-10nm