Optimized for use with LEDs, hard coated TECHSPEC® Imaging Filters pass or block UV, visible, or IR wavelengths. Transmission profiles lend to even illumination, and optical density is >3.0. RoHS-compliant products, which may also be used to improve image contrast and isolate spectral regions and colors, are available with center wavelengths of 470, 524, 548, 634, 660, and 880 nm with transmissions up to 97% in light red, dark red, green, blue, UV/VIS Cut-Off, and UV/IR Cut-Off models.