Antireflection structure, optical unit, and optical device
First Claim
1. An antireflection structure for reducing reflection of light having a wavelength equal to or larger than a predetermined wavelength, and absorbing the light whose reflection is reduced, the structure comprising:
- a base structure portion which is configured to have a plurality of structural units arranged on a reference plane, and each having tilted surfaces with respect to the reference plane, anda plurality of fine concave/convex portions formed on a surface of the base structure portion, and arranged within a cycle equal to or smaller than the predetermined wavelength,whereinall side surfaces of each of the structural units are the tilted surfaces, andan angle between at least one of the tilted surfaces and the reference plane is a predetermined angle ranging from 5 degrees to 45 degrees, both inclusive.
1 Assignment
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Accused Products
Abstract
An antireflection structure having a high antireflection effect is provided.
An antireflection structure (50) reduces reflection of light having a wavelength equal to or larger than a predetermined wavelength, and absorbs the light whose reflection is reduced. The antireflection structure (50) includes a base structure portion (7) which is configured to have a plurality of structural units (70) arranged on a reference plane, and each having a tilted surface (71) so that an angle between the first side surface (71) and a reference plane (51) is a predetermined angle, and a plurality of fine concave/convex portions (8, 8, . . . ) which are formed on a surface of the base structure portion (7), and arranged within a cycle equal to or smaller than the predetermined wavelength.
50 Citations
14 Claims
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1. An antireflection structure for reducing reflection of light having a wavelength equal to or larger than a predetermined wavelength, and absorbing the light whose reflection is reduced, the structure comprising:
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a base structure portion which is configured to have a plurality of structural units arranged on a reference plane, and each having tilted surfaces with respect to the reference plane, and a plurality of fine concave/convex portions formed on a surface of the base structure portion, and arranged within a cycle equal to or smaller than the predetermined wavelength, wherein all side surfaces of each of the structural units are the tilted surfaces, and an angle between at least one of the tilted surfaces and the reference plane is a predetermined angle ranging from 5 degrees to 45 degrees, both inclusive. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification