JPS62289802A - Bronze-colored antifogging mirror - Google Patents

Bronze-colored antifogging mirror

Info

Publication number
JPS62289802A
JPS62289802A JP13416886A JP13416886A JPS62289802A JP S62289802 A JPS62289802 A JP S62289802A JP 13416886 A JP13416886 A JP 13416886A JP 13416886 A JP13416886 A JP 13416886A JP S62289802 A JPS62289802 A JP S62289802A
Authority
JP
Japan
Prior art keywords
bronze
thin film
mirror
color
copper alloy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13416886A
Other languages
Japanese (ja)
Inventor
Michio Aoki
青木 道生
Yutaka Yoshida
豊 吉田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokai Rika Co Ltd
Original Assignee
Tokai Rika Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokai Rika Co Ltd filed Critical Tokai Rika Co Ltd
Priority to JP13416886A priority Critical patent/JPS62289802A/en
Publication of JPS62289802A publication Critical patent/JPS62289802A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Elements Other Than Lenses (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Surface Heating Bodies (AREA)

Abstract

PURPOSE:To maintain the relatively high reflectivity of a bronze-colored mirror and to color said mirror to the uniform bronze color at an adequate density by forming a thin reflective copper alloy film having a prescribed film thickness to one face of a transparent substrate and mounting means for electrical heating of said thin film thereto. CONSTITUTION:The thin reflective copper alloy film 13 essentially consisting of copper such as Cu-Ni alloy is formed to one face of the transparent substrate 12 consisting of glass, plastic, etc. and the film thickness thereof is specified to >=200Angstrom . A pair of electrodes 16 and lead wires 17 connected thereto are provided to both sides on the surface of the thin film 14 as the electrical heating means. The mirror surface 16 is heated to >=60 deg.C so that the fogging thereof is prevented.

Description

【発明の詳細な説明】 3、発明の詳細な説明 技術分野 本発明は、一般に、ブロンズ色防曇鏡に関し、特に、自
動車用後写鏡として好適なブロンズ色防曇鏡に関する。
DETAILED DESCRIPTION OF THE INVENTION 3. Detailed Description of the Invention Technical Field The present invention generally relates to a bronze-colored anti-fog mirror, and more particularly to a bronze-colored anti-fog mirror suitable as a rear view mirror for automobiles.

従来技術 近年、自動車用後写鏡の分野においては、鏡をブロンズ
色に着色することにより防眩効果を達成するとともに、
製品に高級感を与える着色技術が提供されている。一方
、同分野において、雨水等が原因で生ずる鏡面曇りを防
止する防曇技術が提供されている。そして、また、上記
両者の技術を併せ有する技術ら提供されている。
PRIOR ART In recent years, in the field of automobile rearview mirrors, an anti-glare effect has been achieved by coloring the mirrors in a bronze color.
Coloring techniques are provided that give products a luxurious feel. On the other hand, in the same field, anti-fog technology has been provided to prevent mirror fogging caused by rainwater or the like. Furthermore, technologies that combine both of the above-mentioned technologies have also been provided.

第5.6図に、上記両技術を組み合わせてなる自動車用
後写鏡の従来例を示している。第5.6図において、l
は後写鏡全体を示しており、この後耳鏡lは、ガラス等
の透明基板2に、Ti0h。
Fig. 5.6 shows a conventional example of an automobile rearview mirror that combines both of the above-mentioned technologies. In Figure 5.6, l
1 shows the entire rear otoscope, and this rear otoscope 1 has a transparent substrate 2 made of glass or the like made of TiOH.

Cen2.Zr0y、5nOz、ZnS等の透明誘電体
薄膜3と、Cr、Al1.Ti、Ni−Cr等の金属反
射薄膜5とを真空蒸着等の方法で順に積層するとともに
、金属反射薄膜5を通電加熱するための手段、すなわち
、■対の電極6及び各電極に接続するリード線7を備え
ている。
Cen2. A transparent dielectric thin film 3 made of Zr0y, 5nOz, ZnS, etc., and Cr, Al1. The metal reflective thin film 5 made of Ti, Ni-Cr, etc. is laminated in order by a method such as vacuum evaporation, and the metal reflective thin film 5 is heated by electricity, i.e., a pair of electrodes 6 and a lead connected to each electrode. It has line 7.

上記構造において、今、透明誘電体薄膜3としてT i
 Otを使用したとすれば、この先学膜厚を600Å以
下にすると、入射光と反射光との干渉が原因でブロンズ
色を呈するようになる。ま1こ、1対の電極6間に通電
すれば、金属反射薄膜の電気抵抗により発熱が生じ、そ
の結果、鏡面に発生した曇りが除去されろ。
In the above structure, now the transparent dielectric thin film 3 is T i
If Ot is used, if the film thickness is reduced to 600 Å or less, it will take on a bronze color due to interference between incident light and reflected light. First, if electricity is applied between the pair of electrodes 6, heat will be generated due to the electrical resistance of the metal reflective thin film, and as a result, the fogging that has occurred on the mirror surface will be removed.

ところで、上記従来例においては、NiCr等の金属反
射薄膜5自体は、通常無彩色である。すなわち、後写鏡
lの着色は、透明誘電体薄膜3のみにより、換言すれば
光の干渉効果のみにより、ブロンズ色を発色せしめてい
るのである。
Incidentally, in the conventional example described above, the metal reflective thin film 5 itself made of NiCr or the like is usually achromatic. In other words, the rear view mirror 1 is colored only by the transparent dielectric thin film 3, in other words, by only the light interference effect, to produce a bronze color.

したがって、上記従来例は次のような問題がある。すな
わち、ブロンズ色の濃淡と反射率とは分光特性として相
関関係があり、ブロンズ色が淡い場合は反射率が高く、
一方、ブロンズ色が濃い場合は反射率が低い。ところで
、自動車用後写鏡においては、視認性の点から、規格上
反射率は38%以上は必要とされている。ここで、上記
従来例において、反射率を38%以上にしようとすれば
、十分満足できる濃度のブロンズ色が得られないのであ
る。また、光の干渉効果により発色せしめる場合は色の
バラツキが生ずるという問題がある。
Therefore, the above conventional example has the following problems. In other words, there is a correlation between the shade of bronze and the reflectance as spectral characteristics; when the bronze color is light, the reflectance is high;
On the other hand, when the bronze color is deep, the reflectance is low. By the way, from the viewpoint of visibility, standards for rear view mirrors for automobiles require a reflectance of 38% or more. In the conventional example described above, if the reflectance is increased to 38% or more, a bronze color with a sufficiently satisfactory density cannot be obtained. Further, when coloring is caused by the interference effect of light, there is a problem that color variation occurs.

さらに、この場合は透明誘電体薄膜と金属反射薄膜との
2眉の薄膜が必要で構造も複雑となり、したがって製造
コストが高いという問題がある。
Furthermore, in this case, two thin films, a transparent dielectric thin film and a metal reflective thin film, are required, resulting in a complicated structure and, therefore, a problem of high manufacturing costs.

本発明の技術的課題 従って、本発明が解決すべき技術的課題は、上記自動車
用後写鏡のようにブロンズ色着色鏡であってかつ防曇手
段の施されている鏡において、反射率を比較的高く保つ
と同時に適度の濃度でかつ色のバラツキのないブロンズ
色の着色を得るようにするとともに、構造を簡単にする
ことである。
Technical Problems of the Present Invention Accordingly, the technical problem to be solved by the present invention is to improve the reflectance of a bronze-colored mirror such as the above-mentioned automobile rearview mirror and equipped with an anti-fog means. The objective is to maintain a relatively high concentration and at the same time obtain a bronze color with an appropriate density and no color variation, and to simplify the structure.

本発明の構成 上記技術的課題を解決するために、本発明は次のように
構成した。これを第1.2図に従って説明する。
Configuration of the present invention In order to solve the above technical problem, the present invention was configured as follows. This will be explained according to Fig. 1.2.

本発明に係るブロンズ色防曇鏡は、透明基板12の片面
に、膜厚200Å以上好ましくは500Å以上であって
かつ銅を主成分とする銅合金反射薄膜13を形成すると
ともに、銅合金反射薄膜13を通電加熱するための手段
16.17を装着してなることを特徴としている。
The bronze-colored anti-fog mirror according to the present invention has a copper alloy reflective thin film 13 having a film thickness of 200 Å or more, preferably 500 Å or more and containing copper as a main component, formed on one side of a transparent substrate 12. 13 is equipped with means 16 and 17 for heating with electricity.

透明基板【2はガラス或いはプラスチックにより構成さ
れる。
The transparent substrate [2 is made of glass or plastic.

銅合金反射薄膜13は例えばCu−Ni合金が好ましい
The copper alloy reflective thin film 13 is preferably made of, for example, a Cu-Ni alloy.

通電加熱手段16.17は、銅合金反射薄膜14の表面
の両側に固着した1対の電極16.16並びに各電極1
6に接続したリード線17で構成される。
The energization heating means 16.17 includes a pair of electrodes 16.16 fixed to both sides of the surface of the copper alloy reflective thin film 14 and each electrode 1.
It consists of a lead wire 17 connected to 6.

実施例 本発明者等は次の条件で本発明を実施した。Example The present inventors implemented the present invention under the following conditions.

(条件) 透明基板12:  透明ガラス 銅合金反射薄膜14:  Cu  Ni合金、Cu70
%・Ni30%(原子比率)。
(Conditions) Transparent substrate 12: Transparent glass copper alloy reflective thin film 14: Cu Ni alloy, Cu70
%・Ni30% (atomic ratio).

膜厚600人 電t!6  銀ペースト 電源電圧:  12V 結果は次のとおりてあった。Film thickness: 600 people Electric T! 6 Silver paste Power supply voltage: 12V The results were as follows.

(結果) 第2図に示すように自然光りを透明基板12側から入射
させると、反射率は55%を示した。これは前記自動車
後写鏡・規格値38%以上を満足している。また、第3
図のCIE色度座標図に示すように、本実施例に相当す
る■は従来例に比較して十分農い色調のブロンズ色を呈
していることが分かる。第3図では反射薄膜14のCu
−Ni含打率を種々変化させた例■〜■を示しているが
、何れの場合も従来例と同程度若しくはより濃い色調で
あることを示している。尚、■〜■の何れの場合も反射
率は50%以上である。尚又、CIE色度座標図におい
ては、中心の印「+」の部分は白色を表し、この部分よ
り離れるに従って色調か濃くなる。
(Results) As shown in FIG. 2, when natural light was applied from the transparent substrate 12 side, the reflectance was 55%. This satisfies the standard value of 38% or more for automobile rear view mirrors. Also, the third
As shown in the CIE chromaticity coordinate diagram of the figure, it can be seen that the color (2) corresponding to this example exhibits a bronze color with a sufficiently dark tone compared to the conventional example. In FIG. 3, the reflective thin film 14 is made of Cu.
-Examples (1) to (2) are shown in which the Ni-containing batting percentage was variously changed, and in each case, the color tone is the same as or darker than the conventional example. In addition, the reflectance is 50% or more in any case of (1) to (2). Furthermore, in the CIE chromaticity coordinate diagram, the center mark "+" represents white, and the color tone becomes darker as the distance from this part increases.

室温20℃下で通電加熱すると銅合金反射薄膜14のシ
ート抵抗は4(Ω/sq)、電極両端の抵抗は8Ω、出
力は18Wとなり、鏡面は60°C以上になった。これ
は曇止めをするために十分な温度である。
When heated with electricity at a room temperature of 20°C, the sheet resistance of the copper alloy reflective thin film 14 was 4 (Ω/sq), the resistance at both ends of the electrode was 8Ω, the output was 18W, and the mirror surface became 60°C or higher. This is a sufficient temperature to prevent fogging.

第4図に、上記原子比率のCu−Ni合金反射薄膜を使
用した場合の膜厚とシート抵抗及び反射率との関係を示
している。この図より、鏡として充分な反射率(38%
以上)を安定して得るためには、銅合金反射薄膜の膜厚
は200Å以上好ましくは500Å以上が必要であり、
この場合、シート抵抗は約l〜5Ω/sqの範囲で制御
できることが分かる。
FIG. 4 shows the relationship between film thickness, sheet resistance, and reflectance when a Cu--Ni alloy reflective thin film having the above atomic ratio is used. From this figure, we can see that the reflectance is sufficient (38%) as a mirror.
In order to stably obtain the above), the thickness of the copper alloy reflective thin film needs to be 200 Å or more, preferably 500 Å or more,
In this case, it can be seen that the sheet resistance can be controlled within a range of about 1 to 5 Ω/sq.

本発明の作用・効果 本発明の前記構成においては、銅合金反射薄膜14固有
の反射光のブロンズ色着色により十分濃いブロンズ色を
得ることができるとともに色のバラツキもほととんどな
い。また、銅合金反射薄膜14一層であるため構造が簡
単で製造コストが低置となる。そして、通電加熱手段で
ある銅合金反射薄膜14は防曇効果も十分である。
Effects and Effects of the Present Invention In the above configuration of the present invention, a sufficiently deep bronze color can be obtained due to the bronze coloring of the reflected light unique to the copper alloy reflective thin film 14, and there is almost no variation in color. Furthermore, since the copper alloy reflective thin film 14 is a single layer, the structure is simple and the manufacturing cost is low. The copper alloy reflective thin film 14, which is the electrical heating means, also has a sufficient antifogging effect.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の実施例に係るブロンズ色防曇鏡の裏面
図、第2図は第1図B−B’線断面図、第3図は本発明
の実施例と従来例との比較を示すCIE色度座標図、第
4図は銅合金反射薄膜と反射率及びシート抵抗との関係
を示すグラフ、第5図は従来例に係るブロンズ色防曇鏡
の裏面図、第6図は第5図A−A’線断面図である。 11・・・ブロンズ色防曇鏡、  12・・・透明基板
、13・・・銅合金反射薄膜、  16・・・電極、 
 17・・・リード線。 1図 窮3図
Fig. 1 is a back view of a bronze-colored anti-fog mirror according to an embodiment of the present invention, Fig. 2 is a sectional view taken along line B-B' in Fig. 1, and Fig. 3 is a comparison between an embodiment of the present invention and a conventional example. FIG. 4 is a graph showing the relationship between the copper alloy reflective thin film, reflectance, and sheet resistance. FIG. 5 is a back view of a conventional bronze-colored antifogging mirror. FIG. FIG. 5 is a sectional view taken along line A-A'. 11... Bronze color anti-fog mirror, 12... Transparent substrate, 13... Copper alloy reflective thin film, 16... Electrode,
17... Lead wire. Figure 1 Figure 3

Claims (1)

【特許請求の範囲】[Claims] (1)透明基板(12)の片面に、膜厚が200Å以上
であってかつ、銅を主成分とする銅合金反射薄膜(13
)を形成するとともに、銅合金反射薄膜(13)を通電
加熱するための手段(16、17)を装着してなること
を特徴とするブロンズ色防曇鏡。
(1) On one side of the transparent substrate (12), a copper alloy reflective thin film (13
) and is equipped with means (16, 17) for electrically heating the copper alloy reflective thin film (13).
JP13416886A 1986-06-09 1986-06-09 Bronze-colored antifogging mirror Pending JPS62289802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13416886A JPS62289802A (en) 1986-06-09 1986-06-09 Bronze-colored antifogging mirror

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13416886A JPS62289802A (en) 1986-06-09 1986-06-09 Bronze-colored antifogging mirror

Publications (1)

Publication Number Publication Date
JPS62289802A true JPS62289802A (en) 1987-12-16

Family

ID=15122037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13416886A Pending JPS62289802A (en) 1986-06-09 1986-06-09 Bronze-colored antifogging mirror

Country Status (1)

Country Link
JP (1) JPS62289802A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007181557A (en) * 2006-01-06 2007-07-19 Ryoko:Kk Synthetic resin mirror

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007181557A (en) * 2006-01-06 2007-07-19 Ryoko:Kk Synthetic resin mirror

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