INDICATING INSTRUMENT DIAL PLATE

An indicating instrument dial plate includes a substrate that is formed in a plate shape, made of a transparent or semi-transparent material, has a front face including a hairline-treated surface and has a rear face which is irradiated with a dial plate illumination light from a light source inside...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MIKAMI HIROBUMI, ISHIHARA HIDEO
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:An indicating instrument dial plate includes a substrate that is formed in a plate shape, made of a transparent or semi-transparent material, has a front face including a hairline-treated surface and has a rear face which is irradiated with a dial plate illumination light from a light source inside an indicating instrument, and a half-mirror layer that is formed in a shape of a thin film covering the hairline-treated surface by sputtering and adapted to allow a portion of external light incident to the front face of the substrate from the outside of the indicating instrument to be transmitted into the substrate and to allow a portion of the external light to be reflected. The hairline-treated surface is made by forming fine line-shaped grooves on the front face of the substrate. The hairline-treated surface includes hairline-patterned unevenness which diffuses the external light.