| 摘要 |
<p>The present invention refers to a lens system with at least one lens Lj arranged on an optical axis A and having a focal length fj corresponding to an optical power pj=1/fj refracts light from an object having an object size 0, with the object being positioned at o relative to its principal plane H of the lens Lj, to provide an image having an image size /, with the image being positioned at i relative to its principle plane H', and being defined by the crossing point of 2 refracted light rays, with 1≤ j ≤n and j, n ∈ N, and in case n > 1, p1...n being the optical power of the lens system, wherein the image size / and the image position i are determined by 2 random light rays in form of either 2 first light rays (4) running from the left to the right relative to the optical axis A in case the object is positioned on the left side of the lens system or 2 second light rays running from the right to the left relative to the optical axis A in case the object is positioned on the right side of the lens system, each of said first or second light rays (4) impinging on the lens system with an angle α 1 with respect to the optical axis A and being refracted by said lens system such that, after having passed the lens system, it crosses the optical axis with an angle β η being determined by tan β η = tan α 1 [1+< LR > p 1...n 0] - < LR > p 1...n 0 where < LR > =+1 for the first light ray (4) and < LR > = -1 for the second light ray, 0° < α 1 < 90° and p 1...n = p n...1. It also refers to a method for constructing such a lens system and an optical device with such a lens system.</p> |
