| 摘要 |
PURPOSE:To reduce the size by a method wherein a mirror surface is provided on the surface of a semiconductor substrate at a position corresponding to a light emitting region formed on the rear of the semiconductor substrate. CONSTITUTION:A mirror surface 21 which is inclined by 45 degrees from the surface of a semiconductor substrate 11 is provided on the surface of the semiconductor substrate 11 at a position corresponding to a light emitting region 20 formed on the rear of the semiconductor substrate 11. Therefore, light 30 emitted from the light emitting region is reflected by the mirror surface 21 to bend its direction at a right angle and coupled with an optical fiber 23 which is so provided as to have its end surface a vertical light taking-out surface 22 vertical to the substrate surface 11a through the vertical light taking-out surface 22. |
