| 摘要 |
PURPOSE:To condense laser lights closely with a simple optical system and to use them effectively for a high-speed printer or the like, by reflecting totally plural parallel laser lights on reflective films of slope parts of a transparent optical material so that they are 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 all of the surface except end faces 11 and 12 is coated with a metallic reflective film 16. When three parallel laser lights 1a-1c are made incident to the end face 11, the light 1b goes straightly to become a light 1b'. Lights 1a and 1c are reflrected totally in the intermediate part 14 repeatedly after being reflected totally on the reflective film 16 of slope parts 13a and 13b and are reflected totally on the reflective film 16 of slope parts 15a and 15b and are emitted as lights 1a' and 1c' from the 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. |
