| 摘要 |
<p>[PROBLEMS] To form a coating film having no line by spin coating with simple control, and furthermore, with a reduced coating solution quantity. [MEANS FOR SOLVING PROBLEMS] An ejection apparatus having a main ejection nozzle (7) and an auxiliary ejection nozzle (9) is used, and the main ejection nozzle (7) and the auxiliary nozzle (9) are arranged above the convex surface (1a) of a plastic lens (1) so that the main ejection nozzle (7) is positioned above the center of the lens (1). In a state where the lens (1) is rotated, while keeping an interval between the main ejection nozzle (7) and the auxiliary ejection nozzle (9) constant and linearly moving the both nozzles to be away from the lens center (O), a coating solution containing a volatile organic solvent is ejected from the main ejection nozzle (7) and the auxiliary ejection nozzle (9) at the same time. When the main ejection nozzle (7) is positioned at the edge of the lens (1), ejection of the coating solution from the main ejection nozzle (7) and the auxiliary ejection nozzle (9) is stopped. Then, the coating film formed on the convex surface (1a) of the lens (1) is dried to form the coating film.</p> |
