abstract |
(57) An object of the present invention is to provide a lens having a high anti-pollution property, the effect of which is permanent, and the contaminants being easily removed. A lens surface has a molecular weight of 5 × 10 2 to 1 × a 105, a lens to form a layer of fluorine-containing silane compound represented by the following formula, high pollution resistance, its effect is durable, yet is easy to remove contaminants. |