| 摘要 |
PURPOSE:To utilize effectively an illumination light, by making an optical crystal itself and a lens having the condensing function into one body. CONSTITUTION:The light led by the first optical fiber 1 is irradiated to an optical crystal 3 as parallel rays, and the light transmitted through the optical crystal 3 is condensed to the second optical fiber 5; and this optical crystal 3 has the first spherical suface 6A facing to the first optical fiber 1 to convert the light from the first optical fiber 1 to prallel rays. Further, the optical crystal 3 has the second spherical surface 6B facing to the second optical fiber 5 to condense the transmitted light to the second optical fiber 5. |
