| 摘要 |
<p>A mechanism for imparting water repellency to both surfaces of each of optical lens blanks simultaneously is provided in a vacuum treatment chamber (16) in which water-repellent films are formed on both sides of each of optical lens blanks (24) arranged on a blank holder (22) which is placed in a vacuum atmosphere rotatably. An upper surface water-repellency treatment unit (30) and a lower surface water-repellency treatment unit (40) are provided above and below the blank holder (22). Water-repellent films are formed on the upper surfaces of the optical lens blanks by the upper surface water-repellency treatment unit, while water-repellent films are formed on the lower surfaces of the optical lens blanks by the lower surface water-repellency treatment unit. With this constitution, water-repellent films are formed on both sides of each of the optical lens blanks simultaneously. A film thickness correction mechanism for water-repellency treatment comprises film thickness correction plates (51, 52) which are provided between the upper water-repellency treatment unit and the optical lens blanks and between the lower water-repellency treatment unit and the optical lens blanks.</p> |
