An optical device may include an optical element disposed in an optical path. The optical device may include a mount to dispose the optical element in the optical path. The optical device may includea plurality of spring clamps to attach the optical element to the mount. The spring clamp, of the plurality of spring clamps, may include a body, a spring, and a screw. The screw may be to attach to the mount and to compress the spring. The spring may be to dispose a leading edge of the body against the optical element. The spring clamp may be to maintain the optical element in the optical path for a thermal cycle of at least between approximatel -50 degrees centigrade and approximately 130 degrees centigrade.