| 摘要 |
PURPOSE:To obtain a photoelectric device which can set a wide area without increasing the quantity of luminous elements and light receiving elements. CONSTITUTION:Each of a light projector body 2 and a light receiving device body 4 is formed in a box shape by a peripheral wall 5 having a U-figure shaped horizontal section and a peripheral wall 6 which is fitted on the front opened port of the peripheral wall 5 and consists of the light transmissive material, and the peripheral walls 7 and 8 for closing both edge opened ports of a rectangular cylindrical body formed from these peripheral walls 5 and 6. The light projector body 2 is formed by attaching mirrors 9, 10, and 11 on the inner surfaces of the peripheral walls 5, 7, and 8. Further, the light receiving device body 2 is formed by attaching the mirror 9 on the inner surface of the peripheral wall 5. Insertion holes 12 and 13 for the insertion of each luminous element 1 from outside and the arrangement at the mirror surface parts 10 and 11 inside are formed on the peripheral walls 7 and 8 of the light projector body 2. While, each light receiving element 3 is arranged at the mirror surface parts 10 and 11 of the peripheral walls 7 and 8 of the light receiving device body 4. The light projector body 2 and the light receiving device body 4 are arranged by setting the peripheral wall 6 consisting of the light transmissive members in opposed state, and a photoelectric device is constituted. |
