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US 8,897,101 B2Granted
Timepiece faceplate and timepiece
AssigneeSeiko Epson Corporation
InventorsAtsushi Kawakami, Yoshiyuki Obi
Life of this patent
Estimating the term…
Abstract
To offer a timepiece faceplate having exceptional transmission of light as well as exceptional aesthetic appearance, and to offer a timepiece provided with the timepiece faceplate, a timepiece faceplate of the invention is provided with a first plate member including a material having an optical transmission property, and a second plate member including a material having an optical transmission property.
Claims7
A timepiece faceplate, comprising
- a first plate member having an optical transmission property, the first plate member being integrally formed as a one-piece, unitary member;
- and
- a second plate member having an optical transmission property, the second plate member being integrally formed as a one-piece, unitary member,
- the first plate member including front and rear faces, the rear face of the first plate member facing the second plate member, the rear face of the first plate member being provided with first asperities having a function of reflecting and scattering light impinging thereon from the front face of the first plate member, the front face of the first plate member being disposed on an opposite side of the rear face of the first plate member,
- the second plate member including front and rear faces, the rear face of the second plate member being disposed on an opposite side of the front face of the second plate member, the front face of the second plate member facing the first plate member, the rear face of the second plate member being provided with second asperities having a function of reflecting and scattering light impinging thereon from the front face of the second plate member,
- the first and second plate members contacting with respect to each other such that the first asperities of the first plate member directly contact with the front face of the second plate member,
- the first asperities present on the first plate member being orderly arranged, with the average pitch thereof being 25 μm or more to 100 μm or less,
- the second asperities present on the second plate member being orderly arranged, with the average pitch thereof being 10 μm or more to 25 μm or less,
- each of the first asperities having a pair of first side surfaces that intersect with respect to each other to define a distal end of each of the first asperities,
- each of the second asperities having a pair of second side surfaces that intersect with respect to each other to define a distal end of each of the second asperities.
7 more elements
Dependencies are inferred from the claim text.