| 摘要 |
The invention relates to a device for alignment of a first component (1) and a second component (2) in a predetermined relation to each other, comprising a transmitter unit (7) arranged for mounting on said first component (1) and comprising a light source (9) for the generation of light radiation (10) with a predetermined pattern in the direction towards a receiver unit (11; 11', 22, 27; 27') arranged for mounting on said second component (2), where the receiver unit (11; 11') comprises a detection device (18a, 18b; 18a', 18b' 23a, 23b; 28a, 28b; 28'a, 28'b) for said light radiation (10). The invention is characterised in that said detector device (18a, 18b; 18a', 18b', 23a, 23b; 28a, 28b, 28'a, 28'b) comprises a first detector (18a, 18a' 23a; 28a; 28a') and a second detector (18b; 18b' 23b; 28b; 28'b), respectively, which are separated depthwise in relation to said transmitter unit (7). The invention also relates to a receiver unit (11; 11'; 22, 27, 27') for the above-mentioned type of alignment, and also a method for such alignment. By means of the invention, an improved alignment of for example belt discs is provided.
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