Device and method for irradiation

1. A device for irradiation of small particles for analysis of the quality of the particles, which comprises

a sample-feeding carrier, which has sample holders and is adapted to take up particle samples, which each comprise at least one particle, in the sample holders and transport the particle samples to a place for irradiation,

a radiating device emitting electromagnetic radiation for irradiation of the particle samples, and

radiation guides, which are attached on the sample-feeding carrier for guiding the radiation emitted by the radiating device to a particle sample in a sample holder, when the particle sample has been fed to the place for irradiation wherein at least one radiation guide comprises a first and a second outlet for directing the radiation out of the radiation guide, said first outlet being arranged at a first sample holder and said second outlet being arranged at a second sample holder adjacent to the first sample holder.

2. The device according to claim 1 , wherein each sample holder has a shape corresponding to that of a particle for controlling the orientation of the particle in the sample holder.

3. The device according to claim 2 , wherein each sample holder is elongate and has a short side, and a corresponding radiation guide guides the radiation emitted by the radiating device towards the short side of the sample holder, so that the radiation is incident towards a short side of a particle in the sample holder.

4. The device according to claim 1 , wherein the first and second outlet of the at least one radiation guide are arranged in such relation to the sample holder, respectively, so that radiation emitted from the first and second outlet will irradiate a particle in the first and second sample holder, respectively, with sweeping incidence.

5. The device according to claim 1 , wherein each radiation guide has an inlet, which is adapted to pick up radiation from the radiating device, said inlet extending along a direction of transport of the carrier.

6. The device according to claim 1 , wherein the radiating device comprises two light sources, which are adapted to emit light in different wavelength ranges.

7. The device according to claim 6 , wherein the light sources are adapted to emit red and blue light, respectively.

8. The device according to claim 1 , wherein the radiation guides extend in the same plane as the carrier.

9. A sample-feeding carrier for transporting small particles to a place for analysis of the quality of the particles, which comprises

sample holders, which are adapted to take up particle samples, which each comprise at least one particle, and

radiation guides for guiding electromagnetic radiation to a particle sample in a sample holder, wherein at least one radiation guide comprises a first and second outlet for directing the radiation out of the radiation guide, said first outlet being arranged at a first sample holder, and said second outlet being arranged at a second sample holder adjacent to the first sample holder.

10. A method for irradiation of small particles, for analysis of the quality of the particles, which comprises the steps of:

feeding a particle sample, which comprises at least one particle, to a place for irradiation,

emitting electromagnetic radiation from a radiating device for irradiation of the particle samples,

guiding the radiation in a radiation guide, which follows the feeding of the particle sample, from the radiating device to the particle sample, when the particle sample is in the place for irradiation, and

using the same radiation guide for directing the radiation towards two separate adjacent sample holders by the radiation guide emitting radiation in two different directions.