| 摘要 |
PURPOSE:To separate an objective lens form a holder as necessary by installing a repulsive force generating member to a groove part of a lens barrel of an objective lens, and fixing the lens to the holder by a repulsive force, when engaging the lens. CONSTITUTION:A waveform C ring 11 consisting of phosphor bronze, being a repulsive force generating member is installed in a groove part 10 provided between a front lens barrel part 7 of a lens barrel 6 of an objective lens 1 and an inserting cylindrical part 8. When assembling the lens, the lens barrel 6 of the objective lens is inserted from the inside of a holder 2, the waveform C ring 11 is pressed in and installed to the groove part 10, and the lens 1 is fixed to the holder 2 by a repulsive force. Accordingly, by removing the C ring 11 from the groove part 10, the objective lens 1 can be separated from the holder 2. Therefore, in case of necessity, the lens 1 is removed from the holder and can be reutilized, and the cost is reduced. |
