| 摘要 |
PURPOSE:To rapidly produce the combined lens by sticking a lens contg. a UV absorbent and a lens without contg. the UV absorbent to each other. CONSTITUTION:The rear lens 1 is a dyeing agent lens contg. the UV absorbent and is adhered to the front lens 3 without contg. the UV absorbent by the UV curing type adhesive 2. The combined lens can be rapidly cured by being irradiated with UV rays from the side of the front lens 3. A diethylene glycol bisallyl carbonate polymer, polyurethane resin, etc., are used for the lens to be used. An benzophenone system, salicylate system, etc., are used as the UV absorbent and the amt. of this UV absorbent to be used is 0.1 to 2wt.%. Colorless acrylic adhesives, such as N-vinyl pyrrolidone and 2-ethylhexyl acrylate, are used as the UV curing type adhesive.
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