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US 8,273,444 B2Granted
Lamp design surface member and method of manufacturing lamp design surface member
AssigneeKoito Manufacturing Co., Ltd.
InventorsMichihiko Suzuki, Akinori Yamamoto, Kenichi Matsunaga
Life of this patent
Estimating the term…
Abstract
A lamp design surface member is provided. The lamp design surface member includes a design surface having a decorative surface. Concave-convex portions and planar portions are formed together on the decorative surface. The concave-convex portions have a peak cross-sectional height Rt of 1 μm or more and the planar portions have a peak cross-sectional height Rt smaller than 1 μm. The planar portions are formed so that an area ratio of the planar portions to the decorative surface is in a range of 30% to 80%.
Claims4
A lamp design surface member comprising:
- a design surface including
- a decorative surface on which concave-convex portions having a peak cross-sectional height Rt from a highest convex to a lowest concave of 1 μm or more and planar portions having a peak cross-sectional height Rt from a highest convex to a lowest concave smaller than 1 μm are formed,
- wherein the planar portions are formed so that an area ratio of the planar portions to the decorative surface is in a range of 30% to 80%.
Dependencies are inferred from the claim text.