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Light transmissive member, timepiece, and light transmissive member production method

A technology of light-transmitting parts and manufacturing methods, applied in clocks, optical components, optics, etc., can solve the problems of anti-reflection layer easy charging, foreign matter adhesion, observation and appearance deterioration, etc., and achieve the effect of improving observation

Inactive Publication Date: 2017-07-25
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although the light-transmitting member having an anti-reflection layer described in Patent Document 1 can improve visibility, since the anti-reflection layer is relatively easy to be charged, there is a problem that it may be charged due to static electricity or the like. Causes foreign matter to adhere to the surface, causing problems such as deterioration of visibility and appearance

Method used

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  • Light transmissive member, timepiece, and light transmissive member production method
  • Light transmissive member, timepiece, and light transmissive member production method
  • Light transmissive member, timepiece, and light transmissive member production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0062]

[0063] figure 1 It is a cross-sectional view schematically showing Embodiment 1 of the translucent member of the present invention.

[0064] in figure 1 In the translucent member 1 of Embodiment 1, there are formed a base material 5 having light transmissivity; an anti-reflection layer 10 formed on one surface of the base material 5; and an antistatic layer 20 formed On the other side of the substrate 5.

[0065] 〔Material of base material〕

[0066] The material of the base material 5 is an inorganic oxide, and examples thereof include sapphire glass, quartz glass, soda glass, and tempered glass. As will be described later, as a cover member such as a glass cover for a timepiece, the translucent member 1 is preferably used, and as a material for a glass cover for a timepiece, sapphire glass is particularly preferable in terms of hardness and transparency.

[0067] [Structure of anti-reflection layer]

[0068] The anti-reflection layer 10 is formed on one surface of the substr...

Embodiment approach 2

[0094] figure 2 It is a cross-sectional view schematically showing Embodiment 2 of the translucent member of the present invention.

[0095] Below, refer to figure 2 The translucent member of the second embodiment will be described. In addition, the same components as those in the first embodiment are assigned the same reference numerals, and redundant descriptions are omitted.

[0096] in figure 2 In the translucent member 1A of this embodiment shown, the anti-reflection layer 10 formed on one surface of the base material 5 is the same as the translucent member 1 of the first embodiment (refer to figure 1 ) The same structure.

[0097] In the translucent member 1A of this embodiment, the antistatic layer 20A formed on the other surface of the base material 5 has titanium oxide layers 21A, 25A and a silicon oxide layer 22A as a low refractive index layer. Hereinafter, the antistatic layer 20A of this embodiment will be described in detail.

[0098] Such as figure 2 As shown, in t...

Embodiment approach 3

[0185] Next, another embodiment of the timepiece of the present invention will be described as the third embodiment.

[0186] Even if the glass cover P85 has the antistatic layers 20 and 20A, the glass cover P85 may be charged when the glass cover P85 is cleaned.

[0187] In the aforementioned timepiece, the cover glass P85 is fixed to the bezel P84 by the insulating plastic seal P89. Therefore, the charge generated by the glass cover P85 is not easily diffused to the bezel P84 and the housing P82. Therefore, when the cover glass P85 is charged, there is a problem that it takes time until the charge subsides.

[0188] In order to solve this problem, in the timepiece of this embodiment, a conductive seal P89A (see reference) is provided between the outer peripheral surface of the cover glass P85 and the bezel P84. Figure 5 ) To replace the plastic seal P89. In addition, a conductive seal P88A (refer to Figure 5 ) To replace the plastic seal P88. As such seals P89A and P88A, seals...

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Abstract

The present invention relates to a light transmissive member which has enhanced visibility and also is hardly electrified, a timepiece using the light transmissive member as a cover glass, and a light transmissive member production method. The light transmissive member (1) includes a substrate (5) having a light transmission property, wherein on one surface of the substrate (5), an antireflection layer (10) in which a low-refractive index layer (12) composed mainly of silicon oxide (SiO2) and a high-refractive index layer (11) composed mainly of silicon nitride (SiN) are alternately stacked is formed, and on the other surface of the substrate (5), an antistatic layer (20) including at least a transparent electrically conductive film layer (25) is formed.

Description

Technical field [0001] The present invention relates to a light-transmitting member, a timepiece using the light-transmitting member as a glass cover, and a method of manufacturing the light-transmitting member. Background technique [0002] In the past, in order to improve the visibility of time display and the like, a technique of forming an anti-reflection layer on a translucent member called a glass cover (windshield) has been known. The anti-reflection layer is generally constituted by laminating several to dozens of inorganic layers with different refractive indexes. When high hardness and damage resistance are required on the surface of the glass cover, the light transmittance is often high and the refractive index is low. And high hardness silicon oxide (SiO 2 ) A film is formed on the outermost layer of the anti-reflection layer. For example, Patent Document 1 discloses the following technology: forming an anti-reflection layer on the surface of a base material for a ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34G04B39/00
CPCC03C17/3435C03C17/3452G04B39/002C03C2217/94C03C2217/944C03C2217/948C03C2217/734C03C17/42C03C2217/76C03C2218/365G02B27/0006G04R60/12G04C3/14G04C10/02G04G17/02G04B39/006G02B1/116G02B1/115G02B1/16C23C14/10C23C14/34G02B1/02
Inventor 古里大喜铃木克己
Owner SEIKO EPSON CORP
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