| 摘要 |
PURPOSE:To make a device small-sized, by providing a mangification changing means which changes the positional relation of the connection between a carriage means and a moving material based on a connecting means is accordance with a selected mangification for the purpose of changing the length of the optical path between an original and a lens in accordance with the selected magnification. CONSTITUTION:Driving pulleys 15 and 16 which reciprocate the second mirror 4 in the half speed of the first mirror 3 are not provided to the second mirror carriage 12 but are provided to a pulley carriage 13. The second mirror carriage 12 is movable in the direction of an arrow E relatively to the pulley carriage 13 along a guide shaft 10 and a guide plate 11. When a pulley 24 is rotated to drive a wire 17 after the carriage 12 is fixed in a positional relation to the carriage 13 in accordance with a selected magnification by a connecting means, the carriage 12 is moved together with the carriage 13 as one body, and the second mirror 4 runs in the same direction as the first mirror 3 in the half speed of the first mirror 3. |
