Functioning optical lens and production method thereof
A functioning optical lens includes a molded polyamide layer, and an optical sheet including a polyamide sheet layer and an optical film layer. Such a functioning optical lens may be prepared by bending an optical sheet including an optical film layer and a polyamide sheet layer, and injection molding a polyamide composition onto the bent polyamide sheet layer so as to thermally fuse the polyamide composition and the polyamide sheet layer with each other.
1. A functioning optical lens comprising:
a molded polyamide layer;
a first polyamide sheet layer, a second polyamide sheet layer, and an optical film layer, arranged between the polyamide sheet layers;
wherein the polyamides in both of the polyamide sheet layers and the molded polyamide layer are alicyclic polyamides,
wherein the first polyamide sheet layer comprises a stretched polyamide sheet, and said stretched polyamide sheet has an uniaxially stretching ratio of 1.1 to 3.5;
wherein the second polyamide sheet layer comprises a stretched polyamide sheet having a uniaxially stretching ratio of 1.1 to 3.5;
wherein one surface of said first polyamide sheet layer is directly fused with said molded polyamide layer without the interposition of an adhesive layer;
wherein said optical film layer is directly bonded to said first polyamide sheet layer by an adhesive;
wherein said optical film layer is directly bonded to said second polyamide sheet layer by an adhesive; and
wherein said optical film layer consists of a film selected from the group consisting of:
(1) an antiglare film including a base film of an optically transparent thermoplastic resin, and an antiglare layer having a convex-concave structure formed by spraying of fine particles, embossing, or transferring;
(2) a dimming film molded by kneading optically transparent thermoplastic resins with a dimming material selected from inorganic substances and organic substances as a material for absorbing light at a specific wavelength; and
(3) a polarizing film prepared by doping an uniaxially or biaxially stretched film with iodine or dichromatic dyes wherein the material for the stretched film is selected from the group consisting of poly(vinyl alcohol)s (PVAs), poly(vinyl acetal)s, and poly(vmayl butyral)s.
2. The functioning optical lens according to claim 1 , wherein the alicyclic polyamide is a compound represented by following Formula (1):
wherein X represents a direct bond, an alkylene group, or an alkenylene group; R 1 and R 2 are the same as or different from each other and each represent an alkyl group; “m” and “n” each represent an integer of 0 to 4; and “p” and “q” each represent an integer of 1 or more.
3. The functioning optical lens according to claim 1 , wherein the first polyamide sheet layer, the second polyamide sheet layer, and the optical film layer are bent or curved.
4. The functioning optical lens according to claim 1 , wherein the functioning optical lens has at least one of an antiglare function and a dimming function.