Abstract: This invention relates to a device for the protection of eyes, electro-optical sensors and sensitive materials against high energy light beams, in which the incidence of a high energy light beam on the element to be protected is detected by a warning sensor. The warning sensor triggers a light source to provide a light beam which, with minimal delay, causes a diminution in the transmissivity of a protective element interposed in the beam path of the high intensity light beam. Due to the extremely rapid response time of these components, the protective response of the invention adapts almost immediately to changes in the intensity of an incident high energy light beam, thereby providing necessary protection and a prompt return to normal transmissivity upon termination of the potentially damaging radiation.

Abstract: A method and apparatus for steering a moving object is based on an electro-optical sensor unit which selectively detects the UV-radiation generated by a flying body or projectile. The signals resulting therefrom are processed and converted by a computer into steering and control signals for the object to be steered, whereby the locating probability and the interference reliability are improved.

Abstract: A guide beam and tracking system for steering a flying body toward a target n accordance with the beam rider principle, is constructed for use under adverse weather conditions. Even under such adverse weather conditions a highly accurate target acquisition is assured due to the use of optical conversion, and beam expansion in the transmitter path, and heterodyning in the laser receiver. It is thus possible to achieve in addition to the highly accurate target acquisition, an accurate tracking of a flying body moving toward a target, under the control of a guide beam device.