Device for generating radiation

Claim 1

A device for generating radiation, which device comprises an electrically operated radiation source (1) to be connected to a power source (U, I), a means (2) for regulating a current of the radiation source (1) and an at least partly curvilinearly symmetric cap-like reflector means (9), which reflector means (9) is positioned round the radiation source (1) in such a way that the radiation source (1) is situated mainly in a centre of curvature (10) of the reflector means (9) or in the vicinity thereof and the cap-like reflector means surrounds the radiation source along a wide sector, the cap-like reflector means (9) comprising 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) and the size of the opening (13) being arranged to limit the outcoming radiation mainly only to the collecting optics (12), which device additionally comprises a modulator means (15) rotatable about a rotating axis thereof and including interrupting means (16 and 17) for modulating the radiation coming from the radiation source (1) outside the reflector means (9) by interrupting the propagation of the radiation, characterized in that the modulator means (15) is cup-like and comprises 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 interrupting means (16 and 17) and that the cup-like 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) together with its interrupting means (16 and 17) are arranged to rotate along a substantially circular periphery (19) round the cap-like reflector means (9).

Claim 2

A device for generating radiation, which device comprises an electrically operated radiation source (1) to be connected to a power source (U, I), a means (2) for regulating a current of the radiation source (1) and an at least partly curvilinearly symmetric cap-like reflector means (9), which reflector means (9) is positioned round the radiation source (1) in such a way that the radiation source (1) is situated mainly in a centre of curvature (10) of the reflector means (9) or in the vicinity thereof and the cap-like reflector means surrounds the radiation source along a wide sector, the cap-like reflector means (9) comprising 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) and the size of the opening (13) being arranged to limit the outcoming radiation mainly only to the collecting optics (12), which device additionally comprises a modulator means (15) rotatable about a rotating axis thereof and including interrupting means (16 and 17) for modulating the radiation coming from the radiation source (1) outside the reflector means (9) by interrupting the propagation of the radiation, characterized in that the modulator means (15) is cup-like and comprises 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 interrupting means (16 and 17) and that the cup-like 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) together with its interrupting means (16 and 17) are arranged to rotate along a substantially circular periphery (19) round the cap-like reflector means (9).