Patent ID: 6816311
Filing Date: 2004-11-09
Classification: G02B

Abstract:
A device for producing at least one line, or a group of lines of electromagnetic radiation of the optical spectral range in a preselectable three-dimensional area, the at least one line, or the group of lines, are used as positioning aids, or geometry detection aids, the device comprising at least one conversion unit which is at least partially transparent to the electromagnetic radiation used and which can convert the eletromagnetic radiation passing through it, such that the electromagnetic radiation forms the at least one line, or the group of lines in a given three-dimensional wherein the conversion unit comprises at least one refractive element, by refraction of the radiation passing through the at least one conversion unit on at least one optically functional interface of the refractive element the at least one line or the group of lines being formed in a given three-dimensional area, wherein the at least one optically functional interface of the at least one refractive element is divided into segments.