OPTICAL ELEMENT AND METHOD FOR MANUFACTURING THE SAME
First Claim
1. An optical element comprising:
- a first optical layer having a concavo-convex surface;
a wavelength-selective reflective layer provided on the concavo-convex surface of the first optical layer; and
a second optical layer provided on the concavo-convex surface on which the wavelength-selective reflective layer is provided so as to fill the concavo-convex surface,wherein the wavelength-selective reflective layer includes a metal layer,a protective layer provided on the metal layer and containing a metal oxide as a primary component, anda high refractive index layer provided on the protective layer and containing a metal oxide other than zinc oxide as a primary component, andthe wavelength-selective reflective layer selectively directionally reflects light in a specific wavelength band while transmitting light other than that in the specific wavelength band.
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Abstract
An optical element includes: a first optical layer having a concavo-convex surface; a wavelength-selective reflective layer provided on the concavo-convex surface of the first optical layer; a second optical layer provided on the concavo-convex surface on which the wavelength-selective reflective layer is provided so as to fill the concavo-convex surface, and in the optical element described above, the wavelength-selective reflective layer includes a metal layer, a protective layer provided on the metal layer and containing a metal oxide as a primary component, and a high refractive index layer provided on the protective layer and containing a metal oxide other than zinc oxide as a primary component, and the wavelength-selective reflective layer selectively directionally reflects light in a specific wavelength band while transmitting light other than that in the specific wavelength band.
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Citations
18 Claims
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1. An optical element comprising:
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a first optical layer having a concavo-convex surface; a wavelength-selective reflective layer provided on the concavo-convex surface of the first optical layer; and a second optical layer provided on the concavo-convex surface on which the wavelength-selective reflective layer is provided so as to fill the concavo-convex surface, wherein the wavelength-selective reflective layer includes a metal layer, a protective layer provided on the metal layer and containing a metal oxide as a primary component, and a high refractive index layer provided on the protective layer and containing a metal oxide other than zinc oxide as a primary component, and the wavelength-selective reflective layer selectively directionally reflects light in a specific wavelength band while transmitting light other than that in the specific wavelength band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for manufacturing an optical element comprising:
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forming a wavelength-selective reflective layer on a concavo-convex surface of a first optical layer; and forming a second optical layer on the concavo-convex surface on which the wavelength-selective reflective layer is formed so as to fill the concavo-convex surface, wherein the step of forming a wavelength-selective reflective layer includes the substeps of; forming a metal layer; forming a protective layer containing a metal oxide as a primary component on the metal layer; and forming a high refractive index layer containing a metal oxide other than zinc oxide as a primary component on the protective layer, and the wavelength-selective reflective layer selectively directionally reflects light in a specific wavelength band while transmitting light other than that in the specific wavelength band. - View Dependent Claims (16, 17, 18)
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Specification