| 摘要 |
A divergence-changing device, comprising a ray source, a substantially telecentric arrangement, having an optical system, which has a first focal point and a first system region and a second system region, and having a ray-deflecting device, which is designed such that the beam of rays from the ray source hits the ray-deflecting device, wherein the main ray would hit/hits the ray-deflecting device at the first focal point or close to the first focal point, and that the ray-deflecting device can feed the beam of rays from the ray source to the first system region at different angles of incidence, wherein the beam of rays imaged by the first system region is deflected onto the second system region by a ray-folding device, wherein the beam of rays is imaged by the second system region such that the beam of rays hits the ray-deflecting device again and leaves the divergence-changing device with a constant position. |
