| 摘要 |
PROBLEM TO BE SOLVED: To manufacture a rod shape photo-transmitting body having a smooth photo-transmitting surface and an excellent optical property at low cost and good productivity. SOLUTION: In such a processing method that ends of respective rod shape photo-transmitting bodies are cut by moving at least either a photo-transmitting body array, in which a plurality of rod shape photo-transmitting bodies are arranged in parallel with each other, or a cutting blade, so that the end of each rod shape photo-transmitting body of the photo-transmitting body array abuts against the tip of the cutting blade, the end of each rod shape photo- transmitting body is cut a plurality of times with the depth of cut smaller than 1μm at one time of the abutment. |
