| 摘要 |
PURPOSE: A lens back coating preventing structure of vacuum evaporator for coating lens is provided improve productivity by preventing undesired coating from being carried out on the back of the lens, thereby reducing defective proportion of lens coating. CONSTITUTION: In a vacuum evaporator for coating lens in which an electron gun is mounted on a lower part of coating chamber(110) having a certain space, a coating lens mounting rotation plate(120) supported to coating lens mounting rotation frame(500) rotatable by driving source is mounted on an upper part of the coating chamber, a door(300) installed in front of the coating chamber in such a way that the door is opened and closed, and an exhaust port(200) connected to vacuum unit is installed at the rear side, the lens back coating preventing structure of the vacuum evaporator for coating lens is characterized in that a coating preventing plate(600) is mounted on a lower part of the circumferential surface of the coating lens mounting rotation plate to block a coating film from being deposited on the back of the lens mounted on the coating lens mounting rotation plate after coating particles of the electron gun go round the back of the coating lens mounting rotation frame through a space between the circumferential surface of the coating lens mounting rotation frame and wall body(111) of the coating chamber.
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