Resolve Optics Ltd. has introduced a 15-mm-focal-length lens, expanding its line of fixed-focus radiation-tolerant lenses. Designed for the cameras and sensors used in environments subject to radiation, the f/2 lens delivers high image resolution and minimal geometric distortion from 400 to 750 nm. Manufactured from cerium-doped glass or synthetic silica, the nonbrowning lens can withstand radiation exposure of up to 53 million rads and temperatures up to 55 °C without discoloration. Available in 6-, 9-, 15- and 25-mm fixed-focus formats, it is designed for use with 1/2-, 2/3- and 1-in. CCTV cameras, and with Newvicon and Chalnicon tubes.