| 摘要 |
PURPOSE:To completely prevent light leakage at a connection point by sheathing a pipe for optical carriage which transmits converged solar rays with a heat- shrinkable tube, etc., made of silicone resin hermetically in one body including its connection part. CONSTITUTION:A heat-shrinkable tube 2 covers external circumferential surfaces of pipes 1a and 1b for optical carriage including their connection part as shown by alternate long and short dash lines, and the tube is heated by a heat source 3 to contract, thereby uniting it with the pipes 1a and 1b hermetically in one body. Consequently, said pipes 1a and 1b are aligned to each other inevitably by concentric contracting force generated when the tube contracts, and then connected. Consequently, light never scatters at the connection point and light is transmitted efficiently. |
