JPS60247602A - Mirror - Google Patents

Abstract

PURPOSE:To obtain a mirror causing no cracking and having zero refractive index by forming a reflecting layer on the surface of a substrate having specified surface smoothness with an anchor coat layer in-between and by coating the surface of the reflecting layer with a protective layer to make the surface of the substrate specular. CONSTITUTION:A substrate 1 is made of a metal or synthetic resin, and the surface smoothness is regulated to <=0.1mum. The anchor coat layer 3 bonds the substrate 1 and the reflecting layer 2 together. When the reflecting layer 2 of Al is formed on a mirror finished stainless steel sheet as the substrate 1, nickel or silicon dioxide is suitable for use as the material of the anchor coat layer 3. The surface of the reflecting layer 2 is coated with a protective layer 4 so as to prevent the layer 2 from being damaged or corroded. A transparent metallic film is most suitable for use as the protective layer 4 and is formed on the surface of the reflecting layer 2 by vapor deposition.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a mirror constructed using metal or synthetic resin as a substrate.

[Prior art]

Conventionally known mirrors are most commonly transparent glass plates (^)
A reflective film (B) of silver or aluminum is formed on the surface opposite to the incident light surface, but the biggest drawback of such mirrors using glass as a substrate is that they break. Therefore,
Synthesize transparent acrylic resin, styrene resin, etc. for the substrate instead of glass! A material formed from M fat has also been proposed.

However, in conventionally known mirrors, whether the substrate is glass or synthetic resin, the substrate is a light-transmitting layer, and the mirror is made of silver or aluminum formed on the back surface of the substrate. The light was reflected by a reflective film and transmitted through the substrate again. Therefore, it is not possible to eliminate the refraction of light when it passes through the substrate, and the only way to obtain a double-sided mirror is to bond two mirrors of the same structure. It was impossible to form.

Further, conventional mirrors have problems such as being easily corroded and easily scratched.

[Problem that the invention seeks to solve]

This invention aims to eliminate the drawbacks of conventional mirrors using glass or synthetic resin as substrates, and by using the substrate as a support for the reflective layer, it is possible to form mirrors on both sides of the substrate. In addition, it is an object of the present invention to provide a mirror having no refractive index.

[Means for solving problems]

In order to solve the above-mentioned problems, the means taken by the present invention is to form a reflective layer on the surface of a substrate having a surface smoothness of 0.1μ theory or less via an anchor coat layer, and to form a reflective layer on the surface of the reflective layer. The reason is that the outer surface of the substrate is formed into a mirror surface by coating it with a protective NM.

〔Example〕

Referring to the drawings below, the mirror according to the present invention includes a substrate (1).
A reflective layer (2) is formed on the incident light surface. The material of the substrate (1) may be either metal or synthetic resin, but it is necessary that the surface smoothness is 0.1 μm or less. The smoothness of the surface of the substrate (1) is 0.1 μm
If this is the case, the substrate (1) cannot be formed. A stainless steel plate is polished by electrolytic composite polishing, in which a polishing tool with alternating electrodes and abrasives is pressed against the surface to be polished while rotating, and the electrolytic action and the abrasive action of the abrasive work alternately. Surface smoothness is 0°05~0.1μ
Since it has an extremely good mirror surface, it is ideal as a substrate for the present invention. However, it is needless to say that the material is not limited to the stainless steel plate, and any metal or synthetic resin can be used as long as it has a surface smoothness of 0.1 μm or less.

The reflective layer (2) can be made of copper, gold, etc. in addition to silver and aluminum, and is laminated on the surface of the substrate (1) by vapor deposition. An anchor coat layer (3) is placed between the substrate (1) and the reflective layer (2) in order to improve and ensure the bonding between the two.
) to intervene. Anchor coat layer (3) is the substrate (1)
This is an intermediate layer between the mirror-finished stainless steel plate and the reflective layer (2), and an appropriate layer is selected as appropriate.
1), and when a reflective layer (2) made of aluminum is formed thereon, an anchor coat) 7! As (3), nickel or silicon dioxide is suitable.

A protective layer (4) is formed on the upper surface of the protective layer (2) to protect the reflective layer (2) from damage and corrosion. The protective layer (4) includes aluminum oxide, chromium oxide,
A transparent metal film such as silicon oxide, silicon dioxide, -titanium oxide, or titanium dioxide is most suitable, and is formed on the upper surface of the reflector M(2) by a vapor deposition method.

The mirror is made of a stainless steel plate (1) with a surface smoothness of 0.1μI or less by the electrolytic composite polishing treatment, for example.
．． 0.5-0.7μ anchor coat layer (3), 0.5μ reflective layer (2) and 1.5-0.7μ thick substrate on 5n+m thick substrate
Since the protective layer (4) is formed with a thickness of 5μ, an extremely thin mirror plate can be obtained.

It is also possible to form mirrors on both sides of the substrate (1) by forming an anchor coat layer (3), a reflective layer (2) and a protective layer (4) on both sides of the substrate (1).

[Operation and effect of the invention]

According to this invention, a reflective layer is formed on the surface of a substrate having a surface smoothness of 0.1 μm or less via an anchor coat layer, and the surface of the reflective layer is coated with a protective layer to coat the outer surface of the substrate. Since a mirror surface is formed, it is possible to obtain a thin and unbreakable mirror, and since the incident light only passes through the protective layer on the surface and is reflected by the reflective layer, the refractive index substantially decreases. You can get a mirror that doesn't exist. Furthermore, mirrors can be easily formed on both sides of a single substrate. Moreover, the surface preservation I
The presence of the I layer makes it possible to obtain a mirror that is difficult to damage and does not corrode.

[Brief explanation of drawings]

Figure #1 is a sectional view showing an embodiment of the present invention, and Figure 2 is a sectional view of a conventional mirror. (1)...Substrate (2)...Reflective layer (3)...Anchor coat layer (4)...Protective layer Patent applicant Shiseido Co., Ltd.

Claims (2)

[Claims] (1) A reflective layer was formed on the surface of a substrate having a surface smoothness of 0.1 μI or less via an anchor coat layer, and the surface of the reflective layer was covered with a protective layer to form a mirror-like outer surface of the substrate. A mirror characterized by (2) The mirror according to claim 1, characterized in that an anchor coat layer, a reflective layer, and a protective layer are formed on both sides of the substrate.