Device for the intensity modulating a light beam, a production method for these, a method for the intensity modulating a light beam and the use of the device

摘要

The invention relates to a device (14) for modulating the intensity of a light bundle (12) which is incident in the entrance of a modulator (50). Said modulator can be regulated between two states by means of a control signal (54). In the first state, a minimum proportion of the light bundle (12) leaves an exit of the modulator and in the second state a maximum proportion of the light bundle leaves said modulator. According to the invention, the device (14) has two or more modulators (50, 50', 50'') arranged in a series, so that each light bundle leaving one of the modulators (50, 50') is guided into the entrance of one of the next modulators arranged in the direction of light propagation. After the intensity of the light bundle (16) has been modulated by the device, said light bundle can be removed from the last of the series of modulators (50) arranged in this way in such a manner that the extinction of the device (14) in relation to each of the individual modulators (50) is improved.