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 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,
and wherein a thickness non-uniformity dT of the functional layer is between ±30% of the thickness T.
2. 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.
3. An optical article according to claim 2 , wherein the thickness T of the functional layer satisfies the following condition:
18.7 dn +4.2 ≦T ≦100.
4. An optical article according to claim 3 , wherein the thickness T of the functional layer satisfies the following condition:
28.7 dn +4.3 ≦T ≦100.
5. An optical article according to claim 4 , wherein the thickness T of the functional layer satisfies the following condition:
35.2 dn +4.4 ≦T ≦100.
6. An optical article according to claim 1 , wherein the thickness T of the functional layer is not more than 50 μm.
7. An optical article according to claim 1 , wherein the functional layer includes a hard coating layer.
8. An optical article according to claim 7 , wherein the functional layer includes a primer layer that is laminated between the hard coating layer and the optical substrate.
9. An optical article according to claim 1 , further comprising an antireflection film laminated on the functional layer.
10. An optical article according to claim 9 , further comprising an antifouling film laminated on the antireflection film.
11. An optical article according to claim 1 , wherein the optical substrate is a plastic lens substrate.
12. An optical article according to claim 11 , wherein the optical article is a spectacle lens.
13. A pair of spectacles comprising:
a spectacle lens according to claim 12 , and
a frame having mounted thereto the spectacle lens.
14. A system including an optical article according to claim 1 and for seeing an image through the optical article, the optical article facing the outside.
15. 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 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,
and wherein a thickness non-uniformity dT of the functional layer is between ±30% of the thickness T.
16. 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 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,
and wherein a thickness non-uniformity dT of the functional layer is between ±30% of the thickness T.