Functioning optical lens and production method thereof

Abstract

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.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic cross-sectional view of a functioning optical lens according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view showing an optical sheet constituting a functioning optical lens according to an embodiment of the present invention; and

FIG. 3 schematically illustrates steps of a method producing a functioning optical lens according to an embodiment of the present invention.

Claims

1. A functioning optical lens comprising: a molded polyamide layer; andan optical sheet including a polyamide sheet layer and an optical film layer.

2. The functioning optical lens according to claim 1, wherein the polyamide sheet layer and the molded polyamide layer are directly fused with each other without the interposition of an adhesive layer.

3. The functioning optical lens according to one of claims 1 and 2, wherein the polyamide sheet layer and the molded polyamide layer each comprise an alicyclic polyamide.

4. The functioning optical lens according to claim 3, wherein the alicyclic polyamide is a compound represented by following Formula (1):

5. The functioning optical lens according to any one of claims 1, wherein the polyamide sheet layer comprises a stretched polyamide sheet.

6. The functioning optical lens according to claim 5, wherein the stretched polyamide sheet has a stretching ration of 1.1 to 3.5.

7. The functioning optical lens according to claim 5, wherein the stretched polyamide sheet comprises an uniaxially stretched polyamide sheet.

8. The functioning optical lens according to any one of claims 1, wherein the optical sheet is bent or curved.

9. The function optical lens according to any one of claims 1, wherein the functioning optical lens has at least one of an antiglare function and a dimming function.

10. A method of producing a functioning optical lens, comprising the step of: carrying out bending of an optical sheet including an optical film layer and a polyamide sheet layer; andcarrying out injection molding of 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.