JPS61173485A - Manufacture of colored mirror - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to mirrors that are colored to reduce reflectance and thereby reduce eye fatigue and are equipped with anti-fogging heaters, particularly for use with outer surfaces of automobiles, for example. The present invention relates to a method of manufacturing a colored mirror suitable for mirrors.

[Prior Art] Conventionally, as an example of this type of colored mirror, one has been provided in which a colored glass is used as the transparent glass constituting the mirror, and a heater film is attached to a reflective film on the back surface of the colored glass. There is.

However, such a conventional structure requires colored glass and a separate heater film, which complicates the structure, which not only increases costs, but also requires a process for pasting the heater film. However, there is a problem in that manufacturability deteriorates.

[Objective of the Invention 1 The present invention has been made in view of the above circumstances, and its objects are to simplify the structure, improve manufacturability, reduce costs, and at the same time improve the stability of coloring. It is an object of the present invention to provide a method for manufacturing a colored mirror that has the following effects.

[Summary of the Invention] In order to achieve the above object, the present invention deposits gold fj on a transparent substrate by vacuum evaporating the metal while reacting with oxygen.
! After performing the process of forming a colored thin film made of oxide,
The process of forming a metal heater film that also serves as a reflective film is carried out by vacuum-depositing only a metal on the colored thin film, thereby forming a colored 77g film and a metal heater film that also serves as a reflective film into one type. It can be formed from a metal material.

Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In Fig. 1, which shows a cross section of a yellow mirror, 1 is a transparent substrate made of glass, and 2 is a colored thin film with a thickness of about 10 to 100 layers attached to the transparent substrate 1. It is made of metal oxide.

Reference numeral 3 denotes a metal heater film that also serves as a reflective film and has a film thickness of several hundred to several thousand layers attached to this colored 7a film 2. By applying electricity to this metal heater 13 from a power source 4 and generating heat, it is possible to heat the transparent substrate. 1 can be prevented from fogging on the surface 1a.

Note that 5 and 5 are terminals connecting the metal heater film 3 and the power source 4.

FIG. 2 schematically shows an example of a manufacturing apparatus for the above-mentioned colored mirror. That is, 6 is a vacuum evaporation device with a well-known configuration,
This vacuum evaporation apparatus 6 uses a vacuum pump 8 to reduce the pressure in a evaporation chamber 7 made of a bell jar or the like, and in this state heats a sample (in this case, the transparent substrate 1) mounted on a sample stage 9. The colored thin film 2 and the metal heater 1113 are sequentially formed by vapor-depositing a vapor deposition material (in this case, gold WE, which is the material of the colored thin film 2 and the metal heater film 3) onto the transparent substrate 1 by, for example, an ion-blating method. . Specifically, first, a vapor deposition material such as iron is introduced together with oxygen gas at a temperature of 10-3 to 10-' Torr.
A colored film 2 made of iron oxide, which is a metal oxide, is formed by performing a reactive ion blating process at a certain degree of vacuum.
form. When the colored thin film 2 is formed using iron as a material in this way, the colored layer! gI2 exhibits a green to blue color, and the hue can be changed by adjusting its film thickness. Then, by introducing only iron into this layer and performing an ion blating process, a metal heater film 3 which is a reflective film and acts as a resistive heating element is formed.

According to this embodiment described above, there is no need for colored glass as in the conventional case, and the colored film 2 and metal heater film 3 can be provided integrally, thereby simplifying the structure. Further, the colored film 2 and the metal heater film 3 can be formed simultaneously using one type of material, and these colored films 2
The steps for forming the metal heater IFJ3 can be performed continuously using the same vacuum thermal bonding device @6, thereby improving productivity and reducing costs overall. Furthermore, since the colored film 2 is colored with a metal oxide, there is no risk of fading, and the stability of the coloring is increased.

In addition, in the above example, 1 g of coloring! 2 and metal heater 11
13 is formed by the ion blasting method, but instead of this, a sputtering method or a normal vacuum evaporation method may be used. Furthermore, the material to be deposited is not limited to iron, but may also be, for example, 130R stainless steel, 18Cr-8Ni stainless steel, titanium, etc. When 13Cr stainless steel is used, blue to gray coloring can be obtained.
When 18Cr-8Ni stainless steel and titanium are used, golden yellow and blue colors are obtained, respectively.

[Effects of the Invention] As is clear from the above description, according to the present invention, when manufacturing a colored mirror equipped with a metal heater film for preventing fogging, the structure of the colored mirror can be simplified and the manufacturing process can be simplified. This has excellent effects in that it can improve properties, reduce costs, and improve coloring stability.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view, and FIG. 2 is a schematic configuration diagram of a manufacturing apparatus. In the figure, 1 is a transparent substrate, 2 is a colored film, 3 is a metal heater film,
6 indicates a vacuum evaporation device.

Claims (1)

[Claims] 1. A process of forming a colored thin film made of metal oxide by vacuum evaporating metal while reacting with oxygen on a transparent substrate, and then vacuum evaporating only the metal on the colored thin film, which also serves as a reflective film. A method of manufacturing a colored mirror, which includes a step of forming a metal heater film.