Patent ID: 8028650

Claim:
An optical lens coating apparatus characterized by comprising: a light source which emits ultraviolet radiation to a coating solution applied to a coating target surface of an optical lens to cure the coating solution, and a filter switching mechanism disposed between said light source and the optical lens, wherein said filter switching mechanism comprises at least first and second optical filters which transmit and block wavelengths within different specific ranges of the ultraviolet radiation emitted from said light source, and filter switching means for selectively interposing said first optical filter and said second optical filter between said light source and said optical lens, wherein said first optical filter has a blocking wavelength longer than that of said second optical filter, and is interposed between said light source and said optical lens by said filter switching means since start of curing the coating solution by irradiation with the ultraviolet radiation until a lapse of a predetermined period of time, and said second optical filter is interposed between said light source and said optical lens, when the predetermined period of time has elapsed, to replace said first optical filter, the first optical filter and the second optical filter are disposed on a same plane; the first optical filter is placed directly below the light source until a lapse of a predetermined period of time after a start of curing of the coating solution; the first optical filter moves to a retreat position by actuation of the filter switching means from the position directly below the light source after a lapse of a predetermined period of time; and the second optical filter moves so as to be interposed in between the optical lens and the light source as the first optical filter moves to said retreat position.