Optical article and method for producing the same
AssigneeSeiko Epson Corporation
InventorsMitsuhiro Toda, Yuta Hoshino
Life of this patent
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Abstract
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: 6.5dn+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.
Claims16
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:
- 6.5dn+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.
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:
- 6.5dn+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.
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:
- 6.5dn+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.
Dependencies are inferred from the claim text.