Dielectric multilayer film, method for producing same and optical member using same

A multi-layer film and dielectric technology, applied in optical components, optics, chemical instruments and methods, etc., can solve the problems of increased water contact angle, reduced salt water resistance, and change of light reflectivity, achieving low water contact angle, The effect of improving salt water resistance and scratch resistance, and improving hydrophilic function

Pending Publication Date: 2021-07-23
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 3) Furthermore, if the above SiO 2 Membranes are weakened due to having pores at the atomic level, and the salt water resistance is lowered as mentioned above, so they cannot be used in severe environments such as on-board cameras.
[0010] 4) The above SiO 2 The hydrophilic function of the membrane has the following problems: the water contact angle becomes larger and the water repellency becomes larger during a long-term high-temperature and high-humidity test
[0011] 5) Finally, if the above SiO 2 film, the scratch resistance is poor, it is easy to peel off, and the light reflectance changes

Method used

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  • Dielectric multilayer film, method for producing same and optical member using same
  • Dielectric multilayer film, method for producing same and optical member using same
  • Dielectric multilayer film, method for producing same and optical member using same

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Embodiment 1

[0373] Specific examples of the dielectric multilayer film 100 according to this embodiment will be described below. It should be noted that a film forming apparatus (BES-1300) (manufactured by Synchron Co., Ltd.) was used for producing the following dielectric multilayer films.

[0374] "Fabrication of Dielectric Multilayer Films"

[0375] [Production of Dielectric Multilayer Film 1]

[0376] On a glass substrate TAFD5G (manufactured by HOYA Co., Ltd.: refractive index 1.835), SiO was laminated with a predetermined layer thickness by the IAD method using the following conditions. 2 (manufactured by Merck) for the low-refractive index layer, use OA600 (manufactured by Kanon Optron Corporation) Raw material: Ta 2 o 5 , TiO, Ti 2 o 5 mixture) until the layer numbers 1-3 in Table I. Second, as the use of TiO 2 The functional layer (layer number 4) and the uppermost layer (layer number 5) were vapor-deposited by the IAD method so that the sodium content became 5% by mass to...

Embodiment 2

[0477] "Fabrication of Dielectric Multilayer Films"

[0478] [Fabrication of Dielectric Multilayer Film 51 ]

[0479] On the glass substrate TAFD5G (manufactured by HOYA Co., Ltd.: refractive index 1.835), using the IAD method under the following conditions, SiO 2 (manufactured by Merck) for the low-refractive index layer, use OA600 (raw material manufactured by Kanon Optron Corporation: Ta 2 o 5 , TiO, Ti 2 o 5 mixture) until the layer numbers 1-3 in Table IV. Second, as the use of TiO 2 The functional layer (layer number 4) and the uppermost layer (layer number 5) were vapor-deposited by the IAD method so that the sodium content became 5% by mass to form the uppermost layer, and the layer number 5 recorded in Table IV was obtained. dielectric multilayer film.

[0480]

[0481] (chamber conditions)

[0482] Heating temperature 370°C

[0483] Start vacuum 1.33×10 -3 Pa

[0484] (Evaporation source of film-forming material)

[0485] electron gun

[0486]

[048...

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Abstract

The present invention addresses the problem of providing: a dielectric multilayer film which has low light reflectance, hydrophilicity and photocatalytic properties, while exhibiting excellent characteristics such as excellent salt water resistance and excellent scratch resistance; a method for producing this dielectric multilayer film; and an optical member which uses this dielectric multilayer film. A dielectric multilayer film according to the present invention is composed of a plurality of layers on a substrate, and this dielectric multilayer film is characterized in that: the plurality of layers comprise at least one low refractive index layer and at least one high refractive index layer; the uppermost layer, which is furthest from the substrate, is a low refractive index layer; a high refractive index layer, which is arranged on the substrate side of the uppermost layer, is a functional layer that contains a metal oxide having a photocatalytic function; the uppermost layer is a hydrophilic layer which contains a metal oxide having a hydrophilic function, and which has pores that partially expose the surface of the functional layer; and the average width of the pores is 5 nm or more.

Description

technical field [0001] The present invention relates to a dielectric multilayer film, a method for producing the same, and an optical member using the same. More specifically, it relates to a dielectric multilayer film and the like that have low light reflectance, hydrophilicity, and photocatalytic properties, and are also excellent in characteristics such as salt water resistance and scratch resistance. Background technique [0002] In recent years, in-vehicle cameras have been mounted on vehicles in order to assist the driving of vehicles. More specifically, installing a camera on the body of an automobile that captures the rear and sides of the vehicle, and displaying the image captured by the camera in a position that is visible to the driver can reduce blind spots, thereby contributing to safe driving. [0003] Vehicle-mounted cameras are mostly installed outside the vehicle, and the lenses used are strictly required to ensure environmental resistance. For example, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/115G02B1/18
CPCG02B1/115G02B1/18B01J35/004C03C17/3417C03C2217/71C03C2217/75C03C2217/734B01J23/20B01J21/063B01J35/0006B01J35/002G02B1/14B01J21/08B01J35/1004B01J35/1061B01J35/1066B01J35/1071B01J37/0244
Inventor 多田一成粕谷仁一水町靖
Owner KONICA MINOLTA INC
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