UV Bandpass – 200nm to 400nm

Optical Filter Shop’s ultraviolet (UV) bandpass filters transmit visible spectral bands while masking outside signals at lower and higher wavelengths. Our bandpass filters have multiple edges to transmit wavelengths defined by a full-width half-max (FWHM) bandwidth and a nominal center wavelength (CWL) while also reflecting shorter and longer wavelengths. Also known as interference or thin-film filters, our bandpass filters utilize multi-layer hard coatings that provide durable performance without aging or fading in high output luminaires.

Several industrial applications our UV bandpass filters can evaluate include:

• Machine vision.
• Forensics and authentication.
• OEM sensing and imaging.
• Biomedical fluorescence.
• LED trim filters.
• Scientific instrumentation.
• Multispectral imagers and photo bodies.

UV Bandpass Optical Filter Options

Unlike absorbent polymer or colored-glass gels, our UV bandpass filters consist of thin films and are virtually absorption-free, providing high-contrast spectral bands, outstanding transmission and lifetime performance. We design our filters for either narrow or wide bandwidths. They also have sharp-edge differentials between the wavelength reflection bands and high transmission bandpasses steeper than polymer or colored-glass gels.

Our UV bandpass optical filters’ 200-400nm range is below human vision and within the responsitivity of UV-optimized silicon detectors. They provide a wide array of advantages in both the scientific and industrial sectors. Several examples are:

• Lifetime performance with no aging or fading.
• High transmission and low absorption.
• Spectral stability for indoor and outdoor use.
• The availability of standard and custom colors.
• Durable support for high-output lamps, lasers and LEDs.
• OEM customization.

Bandpass filters are commonly matched or combined with other filters to optimize performance in your specific application. Our enhanced OEM designs combine multiple coatings onto the same optic to improve the device’s size, weight and performance. Some of these complementary filter types include:

• Excitation filters: Provide broadband illumination for selective narrowband excitation channels.
• Emission filters: Improve contrast and signal-to-noise ratio.
• Dichroic beamsplitters: Separate fluorescence wavelengths from emission wavelengths.
• Anti-reflective coatings: Optimize transmission by limiting reflections due to the indexing of refraction deltas.
• Patterned Bandpass Filters: Our patterned interference filter coatings modify photodiodes, phototransistors or CMOS sensors.

Purchasing Custom UV Bandpass Filters

Optical Filter Shop supplies custom OEM filters to match the specific angle and wavelength requirements engineered to your exact specifications. In addition to customized filter coatings, we deliver optics to fit your application in specific shapes, sizes and substrates.

In many cases, an optimal OEM design integrates multiple coatings onto the same optic to improve the device’s performance, size and weight. The customization process can be as simple as choosing the type of filter you need, the shape and the required dimensions.

Contact Optical Filter Shop Today for UV Bandpass Filters

Optical Filter Shop’s UV bandpass filters can be shipped in as little as one day if they’re in stock. Our inventory is also perfect for quick prototyping, and the OEM prices are competitive for volume production. If you need to try a specific type of filter for experimentation, we have a standard range of filter samples ready to ship.

Contact us today to learn more about volume discounts, our customization process or the many other services we provide.