An electrochromic mirror including a glass substrate, a transparent conductive film formed on the back of the glass substrate, an electrochromic layer formed on the back of the transparent conductive film, a reflection and electrode film formed on the back of the electrochromic layer in which the electrochromic layer and the reflection and electrode film are covered on the back thereof with an ion shielding oxide film, whereby the performance is stabilized and the productivity enhanced.
1. An electrochromic mirror comprising: a glass substrate on one side thereof; a transparent conductive film formed on the back of the glass substrate; an electrochromic layer formed on the back of the transparent conductive film; a reflection and electrode film formed on the back of the electrochromic layer; the electrochromic layer and the reflection and electrode film being covered from the back thereof with an ion shielding oxide film comprising Al2O3 or Ta2O5 for preventing atmospheric ions from intruding into the electrochromic layer; and an additional ion shielding oxide film comprising Al2O3 or Ta2O5; the additional ion shielding oxide film being interposed between the glass substrate and the transparent conductive film for preventing ions from intruding from the glass substrate to the inside of the electrochromic layer.
2. The electrochromic mirror according to claim 1, wherein a portion of the electrochromic mirror excepting for the glass substrate is covered with a corrosion inhibitive coating layer.
3. The electrochromic mirror according to claim 1, wherein the ion shielding oxide film is covered from the back thereof with a corrosion inhibitive coating layer.
. The electrochromic mirror according to claim 1, further comprising a reduction reaction compensation unit that compensates the reduction reaction by storing electrical charge when the voltage is being applied or by carrying out an oxidation reaction with negative ions in the electrolytic solution.
4. The electrochromic mirror according to claim 3, wherein the reduction reaction compensation unit comprises a carbon film having electrical conductivity that is formed at a light reflective film side of the electrically conductive film and contains activated carbon.
5. The electrochromic mirror according to claim 3, wherein the reduction reaction compensation unit comprises a negative ion reaction film that is formed from an electrically conductive polymer or redox polymer and is provided at a light reflective film side of the electrically conductive film, and that is oxidized by negative ions that have moved toward the side of the electrically conductive film due to the voltage being applied.
6. The electrochromic mirror according to claim 3, wherein:the electrically conductive film is formed from silver or an alloy containing silver;the electrolytic solution is formed comprising negative ions of a hardly-soluble salt that react with ions of silver forming the electrically conductive film when a voltage is applied such that the electrically conductive film is made positive and the transparent electrode film is made negative;the electrochromic mirror further comprises a precipitation film that is formed from the hardly-soluble salt and is provided at the light reflective film side of the electrically conductive film, and that causes a precipitate, which is formed by a reaction between negative ions of the hardly-soluble salt that have moved toward the side of the electrically conductive film due to the voltage being applied and ions of silver constituting the electrically conductive film, to precipitate; andthe reduction reaction compensation unit comprises the silver forming the electrically conductive film, the negative ions constituting the electrolytic solution, and the precipitation film. 
7. The electrochromic mirror according to claim 3, wherein:the electrolytic solution contains a reaction material that can be oxidized by neutral molecules or negative ions and that undergoes an oxidation reaction due to application of a voltage such that the electrically conductive film is made positive and the transparent electrode film is made negative; andthe reduction reaction compensation unit comprises the reaction material.
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