Multilayer antireflection coatings for grazing ultraviolet incident light
First Claim
1. A multilayer antireflection coating, comprising, from the medium side, multiple stacked layers of high-refractive-index material and low-refractive-index material arranged alternatingly in a sequentially stacked manner, each alternating layer of the high-refractive-index material having the same optical thickness, and each alternating layer of the low-refractive-index layer having the same optical thickness, the multilayer antireflection coating inhibiting reflection therefrom of incident p-polarized light having a wavelength λ
- such that 150 nm≦
λ
≦
250 nm incident on the multilayer antireflection coating at an angle of incidence θ
such that 70°
≦
θ
≦
80°
.
1 Assignment
0 Petitions
Accused Products
Abstract
Multilayer antireflection coatings are disclosed for grazing incident ultraviolet light having a large angle of incidence. The coatings comprise, from the medium side, layers of high-refractive-index material alternating with layers of low-refractive-index material. Each layer of the high-refractive-index material has the same optical thickness, and each layer of the low-refractive-index material has the same optical thickness. The multilayer antireflection coatings are effective in preventing reflection of p-polarized light, from optical elements coated with such a coating, having a wavelength of 150 nm≦λ≦250 nm in a range of angle of incidence of 70°≦θ≦80°.
-
Citations
16 Claims
-
1. A multilayer antireflection coating, comprising, from the medium side, multiple stacked layers of high-refractive-index material and low-refractive-index material arranged alternatingly in a sequentially stacked manner, each alternating layer of the high-refractive-index material having the same optical thickness, and each alternating layer of the low-refractive-index layer having the same optical thickness, the multilayer antireflection coating inhibiting reflection therefrom of incident p-polarized light having a wavelength λ
- such that 150 nm≦
λ
≦
250 nm incident on the multilayer antireflection coating at an angle of incidence θ
such that 70°
≦
θ
≦
80°
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- such that 150 nm≦
-
12. A method for reducing reflection of grazing incident p-polarized ultraviolet light from a surface, the method comprising the steps:
-
(a) applying to the surface first and second stacked layers, the first layer being a high-refractive-index layer and the second layer being a low-refractive-index layer; and (b) applying to the first and second layers additional high-refractive-index layers and low-refractive-index layers in an alternating manner to produce a multilayer antireflection coating on the substrate, the antireflection coating having a total number N of layers within a range of 5≦
N≦
17, each alternating high-refractive-index layer having the same optical thickness, and each alternating low-refractive-index layer having the same optical thickness. - View Dependent Claims (13, 14, 15, 16)
-
Specification