| 摘要 |
PURPOSE:To condense closely laser lights with a simple optical system and to use them effectively for a high-speed printer or the like, by reflecting totally parallel plural laser lights on slope parts of a transparent optical material so that they close to one another. CONSTITUTION:In an arranging optical member 10 using an optical glass, apexes of an incidence part 13 and an emission part 15 whose sections are approximately triangular are connected to each other by a flat intermediate part 14, and the shape is formed to satisfy prescribed conditions. When three parallel laser lights 1a-1c are made incident to an end face 11, the center light 1b goes straightly as it is and is emitted as a light 1b'. Lights 1a and 1c are reflected totally on slope parts 13a and 13b and are reflected totally in the intermediate part 14 repeatedly and are reflected totally on slope parts 15a and 15b and are emitted as lights 1a' and 1b' from an end face 12 without overlapping the light 1b'. Thus, three lights are condensed closely to one another and are used effectively for a high-speed printer or the like. |
