| 摘要 |
The invention relates to a multiple reflection optical system comprising a light beam input (E) and output (S) means, a first mirror (M 1 ) having a curvature radius (R 1 ) and arranged at a distance (d 2 ) in front of a second mirror (M 2 ) having a second curvature radius (R 2 ) and arranged at a distance (d 3 ) in front of a third mirror (M 3 ) having a third curvature radius (R 3 ), wherein the and second (M 2 ) mirrors are arranged in such a way that formula (I) is satisfied and the first (M 1 ) and third (M 3 ) mirrors are arranged in such way that formula (II) is satisfied, the first (M 1 ) second (M 2 ) mirrors form a first optical cell having a first optical axis, the first (M 1 ) and third (M 3 ) mirrors form a second optical cell having a second optical axis, said first and second optical axes are different, the curvature radii (R 1 , R 2 , R 3 ) and distances (d 2 , d 3 ) are not simultaneously equal, said first and second optical cells are placed in such a way that the light beams are contained in the optical system between the input and output means.
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