| 摘要 |
PURPOSE:To transmit light energy effectively at low cost by using a hollow photoconductor tube as a photoconductor cable and saving quartz glass to be used. CONSTITUTION:The photoconductor tube 1 is made of a material having superior light transmittivity such as quartz glass. A blocking member 2 of a transparent body arranged at the hollow part on the photodetection side of this photoconductor tube 1 is made of a transparent material which has less refractivity than the tube 1, i.e. quartz glass. Therefore, light energy L incident to the blocking member 2 is transmitted to the side wall of the tube 1 through the blocking member 2 to propagate in the side wall of the tube 1, i.e. quartz glass with superior transmittivity. The photoconductive tube 1 is tapered at a light projection end part and coupled with a trailing photoconductor tube 1. Consequently, light energy is transmitted effectively at low cost. |
