| 摘要 |
<p>The arrangement has a lens arranged at a path, where the lens has a set of surfaces. A radiation source (20) i.e. laser diode, emits laser radiation that penetrates a surface e.g. wall surface, where a parabolic and/or elliptical shaped curve of the surfaces comprises different radii from curved sections in a sectional manner. The curve is extended symmetric to a symmetry plane of the lens, where the radiation runs parallel along the lens and another lens. Another surface is turned towards the radiation, where the latter surface consists of different radii from the sections. An independent claim is also included for a cross line laser measuring instrument comprising a housing.</p> |
