| 摘要 |
The invention relates to a device for generating radiation, which device comprises an electrically operated radiation source (1), a cap-like reflector means (9), which reflector means (9) is positioned round the radiation source (1). The reflector means (9) comprises an opening (13) for directing radiation out of the reflector means (9) towards a collecting optics (12) positioned in the vicinity of the opening (13). The device comprises a rotatable modulator means (15) including interrupting means (16 and 17) for modulating the radiation coming from the radiation source (1). The modulator means (15) is cup-like, comprising a bottom portion (18a), at which the modulator means (15) can be rotated, and a substantially circular wall portion (18b), which wall portion (18b) comprises the interrupting means (16 and 17). The modulator means (15) is positioned round the cap-like reflector means (9) in such a way that, when rotating the modulator means (15), the wall portion (18b) with its interrupting means (16 and 17) is arranged to rotate round the cap-like reflector means (9) in front of the opening (13). |
