OSRAM SICCATHERM and THERATHERM infrared lamps emit most of their radiation in the short-wave, infrared range. The lamps with the ruby red bulb crown effectively reduce the visible light. In conjunction with a special internal parabolic reflector which bundles the infrared energy into a high-intensity beam, these heat lamps produce a strong deep-acting effect in the body. The main benefits of heating with these lamps are their short response time, precise controllability and high efficiency.