| 摘要 |
The present invention provides a polymerizable composition for optical use composed of a polythiol compound and a polyisocyanate compound, and a urethane-based optical lens obtained by reacting the compounds has a low specific gravity and thus is lightweight, and has excellent heat resistance, and particularly, problems of degradation in impact resistance which appear after hard-multi coating are solved. The lens manufactured by using the polymerizable composition has various excellent optical characteristics including workability such as formability and dyeability, transparency and the like. In addition, the present invention provides an optical composition for blocking near infrared rays, containing: the polyurethane-based thermoplastic resin composition; an ultraviolet absorbing agent having an absorption ability for ultraviolet rays of 400 nm or less; and/or a near infrared ray absorbing agent having a high near infrared ray absorption ability of less than 5% for near infrared rays of approximately 800 to 1000 nm, and a method for manufacturing a near infrared ray blocking glass lens by using the same. |
