Optical article and method for producing the same
An optical article includes: an optical substrate, and a functional layer laminated on the surface of the optical substrate, the functional layer having a thickness T μm that satisfies the following condition: 6.5 dn +4.0 ≦T ≦100 wherein the thickness T is larger than 5 μm, and dn is the refractive index difference at the boundary of the optical substrate and the functional layer and satisfies the following condition: 0.06≦dn≦0.4.
1. An optical article comprising:
an optical substrate, and
a functional layer laminated on the surface of the optical substrate,
the functional layer having a thickness T μm that satisfies the following condition:
6.5 dn+ 4.0 ≦T≦ 100
wherein the thickness T is larger than 20 μm, and dn is the refractive index difference at the boundary of the optical substrate and the functional layer and satisfies the following condition:
0.06≦dn≦0.4.
2. An optical article according to claim 1 , wherein the thickness T of the functional layer is not more than 50 μm.
3. An optical article according to claim 1 , wherein a refractive index of the optical substrate is not less than 1.50.
4. An optical article according to claim 1 , wherein a refractive index of the functional layer is not less than 1.50.
5. An optical article according to claim 1 , wherein a refractive index of the functional layer is not more than 1.90.
6. An optical article according to claim 1 , wherein the optical substrate is a plastic lens substrate.
7. An optical article according to claim 1 , wherein the thickness T of the functional layer satisfies the following condition:
10.4 dn+ 4.0 ≦T ≦100.
8. An optical article according to claim 7 , wherein the thickness T of the functional layer satisfies the following condition:
18.7 dn+ 4.2 ≦T ≦100.
9. An optical article according to claim 8 , wherein the thickness T of the functional layer satisfies the following condition:
28.7 dn+ 4.3 ≦T ≦100.
10. An optical article according to claim 9 , wherein the thickness T of the functional layer satisfies the following condition:
35.2 dn+ 4.4 ≦T ≦100.
11. An optical article according to claim 1 , wherein the functional layer includes a hard coating layer.
12. An optical article according to claim 11 , wherein the functional layer includes a primer layer that is laminated between the hard coating layer and the optical substrate.
13. An optical article according to claim 12 , wherein a refractive index of the hard coating layer n 1 , a refractive index of the optical substrate n 2 , and a refractive index of the primer layer n 3 satisfy the following condition:
n2≦n3≦n1.
14. An optical article according to claim 13 , wherein a refractive index of the optical substrate is not more than 1.90.
15. An optical article according to claim 12 , wherein a refractive index of the hard coating layer n 1 , a refractive index of the optical substrate n 2 , and a refractive index of the primer layer n 3 satisfy the following condition:
n1≦n2≦n3.
16. An optical article according to claim 1 , further comprising an antireflection film laminated on the functional layer.
17. An optical article according to claim 16 , further comprising an antifouling film laminated on the antireflection film.
18. A pair of spectacles comprising:
an plastic lens substrate,
a functional layer laminated on the surface of the optical substrate,
the functional layer having a thickness T μm that satisfies the following condition:
6.5 dn+ 4.0 ≦T ≦100
wherein the thickness T is larger than 20 μm, and dn is the refractive index difference at the boundary of the optical substrate and the functional layer and satisfies the following condition:
0.06≦dn≦0.4, and
a frame having mounted thereto the spectacle lens.
19. A method for producing an optical article, comprising forming a functional layer on an optical substrate, the functional layer having a thickness T μm that satisfies the following condition:
6.5 dn+ 4.0 ≦T≦ 100
wherein the thickness T is larger than 20 μm, and dn is the refractive index difference at the boundary of the optical substrate and tine functional layer and satisfies the following condition:
0.06≦dn≦0.4.
20. A method for film production, comprising forming a functional layer on an optical substrate, the functional layer having a thickness T μm that satisfies the following condition:
6.5 dn+ 4.0 ≦T≦ 100
wherein the thickness T is larger than 20 μm, and do is the refractive index difference at the boundary of the optical substrate and the functional layer and satisfies the following condition:
0.06≦dn≦0.4.