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Optical element

An optical element, visible light technology, applied in optical elements, optics, instruments, etc., can solve problems such as low-reflection structures, and achieve high anti-reflection properties, excellent anti-reflection properties, and high productivity.

Inactive Publication Date: 2011-01-19
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although anti-reflective nanostructures can be fabricated at high speed / large area / low cost, but the reflectivity is close to 2%, so this structure is not a non-reflective structure, but a low reflective structure

Method used

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Effect test

no. 1 approach

[0072] (1-1) Structure of optical element

[0073] Figure 8A is a schematic plan view showing a structural example of the optical element according to the first embodiment of the present invention. Figure 8B yes Figure 8A An enlarged plan view of a portion of the optical components shown. Figure 8C is along Figure 8B Sectional views taken of tracks T1, T3, . . . are shown. Figure 8D is along Figure 8B Sectional views of the tracks T2, T4, . . . shown.

[0074] The optical element 1 is applicable to various optical devices such as displays, optoelectronic devices, optical communication devices (optical fibers), solar cells, and lighting devices. For example, the optical element 1 can be used for an antireflection substrate and a light guide plate suitable for preventing reflection of light having a wavelength range of visible light. Furthermore, the optical element 1 can be used for an optical filter having transmittance according to an incident angle of incident ...

no. 2 approach

[0136] (2-1) Structure of optical element

[0137] Figure 15A is a schematic plan view showing a structural example of an optical element according to a second embodiment of the present invention. Figure 15B yes Figure 15A An enlarged plan view of a portion of the optical components shown. Figure 15C is along Figure 15B Sectional views taken of tracks T1, T3, . . . are shown. Figure 15D is along Figure 15B Sectional views of the tracks T2, T4, . . . shown.

[0138] In the optical element 1 according to the second embodiment, the track T has an arc shape, and the main structures 3 are arranged in the arc shape. Such as Figure 15B As shown, in the tracks (T1~T3) of three adjacent rows, the main structures 3 are arranged to form a quasi-hexagonal lattice pattern having the centers of the main structures 3 positioned at points a1~a7. The term "quasi-hexagonal lattice pattern" refers to a hexagonal lattice pattern in which the arc shape along a track T is distorted ...

no. 3 approach

[0153] Figure 18A is a schematic plan view showing a structural example of an optical element according to a third embodiment of the present invention. Figure 18B yes Figure 18A An enlarged plan view of a portion of the optical components shown. Figure 18C is along Figure 18B Sectional views taken of tracks T1, T3, . . . are shown. Figure 18D is along Figure 18B Sectional views of the tracks T2, T4, . . . shown.

[0154] The optical element 1 according to the third embodiment differs from the first embodiment in that in the tracks of three adjacent rows the primary structures 3 form a tetragonal lattice pattern or a quasi-tetragonal lattice pattern. The term "quasi-tetragonal lattice pattern" refers to a tetragonal lattice pattern that is stretched and distorted in the direction of track extension (X direction) different from a regular tetragonal lattice pattern. When the main structures 3 are periodically arranged in a tetragonal lattice pattern or a quasi-tetrag...

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Abstract

An optical element is provided with a base body, and a main structure, i.e., a protruding section or a recessed section, and a sub-structure, which are formed on a surface of the base body. The main structure forms a plurality of rows of tracks on the surface of the base body, and is repeatedly arranged periodically at a fine pitch of a visible light wavelength or smaller. The sub-structure is smaller than the main structure, and is arranged between the main structures or in a gap in the arrangement of the main structures or on a surface of the main structure.

Description

technical field [0001] The invention relates to an optical element. More specifically, the present invention relates to an optical element in which a plurality of structures formed of protrusions or recesses are arranged on a surface thereof at a fine pitch equal to or smaller than the wavelength of visible light. Background technique [0002] Conventionally, an optical element including a light-transmitting substrate made of glass, plastic, or the like is known, and the optical element is subjected to surface treatment in order to suppress surface reflection of light. As such a surface treatment, a method is known in which fine and dense convex and concave portions (moth eyes) are formed on the surface of an optical element (for example, refer to "OPTICAL ANDELECTRO-OPTICAL ENGINEERING CONTACT", Vol. 43, No. 11 (2005), 630-637). [0003] Generally, in the case where periodic convexo-concave shapes are provided on the surface of an optical element, when light passes throug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/11G02B1/118
CPCG02B1/118G02B1/11G02B1/115G02B5/045
Inventor 林部和弥远藤惣铭
Owner SONY CORP
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