UV IR Broadband Coated Endoscope Lens Spectral Medical Imaging Fused Silica

This UV IR broadband coated endoscope lens is purpose-built for spectral medical imaging applications such as fluorescence guided surgery, where the optical train must transmit excitation light and emission signal across widely separated wavelength bands. The rod lens is fabricated from UV fused silica, a substrate with exceptional transmission from 250nm to 2000nm, and coated with a broadband multi-layer stack that maintains high transmission at both the excitation and emission wavelengths. This spectral endoscope lens eliminates the contrast loss that occurs when standard visible-only optics attenuate fluorescence signals.

Fluorescence imaging systems depend on precise spectral management, and this UV IR coated endoscope lens is designed to preserve the integrity of both channels. The coating design is optimized for common fluorophore pairs such as ICG at 800nm and blue-green dyes in the 450-550nm range, with transmission above 95 percent at the design wavelengths. Each broadband spectral optics rod is polished to a 40-20 scratch-dig surface quality and supplied with a measured spectral transmission curve. Custom band combinations, rod diameters from 1mm to 10mm, and multi-element assemblies are available for OEM fluorescence imaging platforms.