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Antireflection film and optical member

An anti-reflection film, optical component technology, applied in optical components, optical components, optics, etc., can solve problems such as obstructing the field of view, and achieve the effect of maintaining hydrophilicity and improving reflectivity characteristics

Pending Publication Date: 2021-11-26
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, if the surface of the hydrophobic optical component is wetted with water, water droplets remain on the surface of the optical component, and the water droplets will obstruct the field of vision.

Method used

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  • Antireflection film and optical member
  • Antireflection film and optical member
  • Antireflection film and optical member

Examples

Experimental program
Comparison scheme
Effect test

experiment example 9

[0086] The optical components of Experimental Example 9 to Experimental Example 11 all have the same configuration as the optical component of Experimental Example 2 described above. However, containing TiO 2 The film-forming conditions of the single-layer photocatalyst film 5 are different in each experimental example. In the optical component of Experimental Example 9, the temperature of the optical substrate 2 was set to 350° C. and the amount of oxygen introduced was set to 100× 1.69×10 -3 Pa·m 3 / sec and was formed by electron beam evaporation. In addition, in the optical component of Experimental Example 10, the temperature of the optical substrate 2 was set to 400° C. and the amount of oxygen introduced was set to 100×1.69×10 -3 Pa·m 3 / sec and was formed by electron beam evaporation. In addition, in the optical component of Experimental Example 11, the temperature of the optical substrate 2 was set to 200° C. and the amount of oxygen introduced was set to 100×1.69...

experiment example 12

[0092] The optical components of Experimental Example 12 to Experimental Example 14 all have the same configuration as the optical component of Experimental Example 2 above. However, in the presence of TiO 2 In the single-layer photocatalyst film 5, different elements were doped in each experimental example, N (nitrogen) was doped in the optical part of experimental example 12, and N (nitrogen) was doped in the optical part of experimental example 13. Cr (chromium), Ce (cerium) was doped in the optical component of Experimental Example 14. The above-mentioned WAX test was carried out 10 times for the optical components of Experimental Examples 12 to 14, and the relationship between the doping element and the self-cleaning effect was evaluated based on the contact angle with water on the surface 4a of the reflectance adjustment film 4 after ultraviolet light irradiation. Correlation.

[0093] Table 6 shows the evaluation results of the correlation between the doping elements ...

experiment example 15

[0098] In the optical components of Experimental Examples 15 to 17, a photocatalyst film 5 and a reflectance adjustment film 4 were sequentially formed on the optical substrate 2, and the optical components containing TiO were sequentially formed from the optical substrate 2 side. 2 The first photocatalytically active layer 14, comprising SiO 2 The intermediate layer 15 and contains TiO 2 The second photocatalytically active layer 14 constitutes the photocatalyst film 5, and from the side of the optical substrate 2 is secondarily composed of SiO 2 The first layer of 10, containing TiO 2 The second layer 11 and contains SiO 2 The third layer 12 constitutes the reflectance adjustment film 4 . However, the photocatalytic film 5 containing SiO 2 The film thickness of the intermediate layer 15 is different in each experimental example, and is set to 1 nm in the optical part of Experimental Example 15, is set to 2 nm in the optical part of Experimental Example 16, and is set to ...

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Abstract

An antireflection film and an optical member are provided. The antireflection film (3) provided on an optical substrate (2) of an optical member (1) has a reflectivity adjusting film (4) including a first layer (10), a second layer (11) having a refractive index higher than a refractive index of the first layer (10), and a third layer (12) having a refractive index lower than a refractive index of the second layer (11), with the thickness from the surface (4a) being not less than 20 nm and less than 150 nm; and a photocatalyst film (5) including one or more photocatalytically active layers (14) containing titanium dioxide, an interface (5a) between the reflectivity adjusting film (4) and the optical substrate (2) and on the reflectivity adjusting film side is disposed at position spaced apart from the surface (4a) by a distance equal to or shorter than 150 nm, and a total thickness of the photocatalytically active layers (14) is equal to or greater than 350 nm and equal to or smaller than 1,000 nm.

Description

[0001] This application is a divisional application of an application with an international application number of PCT / JP2018 / 011924, a date of entering the Chinese national phase on October 11, 2019, a national application number of 201880024723.1, and an invention title of "anti-reflection film and optical components". technical field [0002] The invention relates to an anti-reflection film and an optical component. Background technique [0003] Contamination adheres to the surfaces of optical components such as lenses and covers of cameras installed outdoors, such as surveillance cameras and vehicle cameras, and the surfaces of optical components to which dirt adheres are generally hydrophobic. Furthermore, when the surface of the hydrophobic optical member is wetted with water, water droplets remain on the surface of the optical member, and the water droplets obstruct vision. Therefore, as an antireflection film constituting the surface of an optical component, an antire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/115G02B3/00B01J35/00
CPCG02B1/115G02B3/00B01J21/06B01J23/10B01J23/26B01J27/24B01J35/00B01J35/30G02C7/022
Inventor 高桥裕树
Owner FUJIFILM CORP
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