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US 2001/0024372 A1Published application
Illuminating device
AssigneeNippon Sheet Glass Co., Ltd.
InventorsKenjiro Hamanaka, Hiroyuki Nemoto
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AssigneeNippon Sheet Glass Co., Ltd.
InventorsKenjiro Hamanaka, Hiroyuki Nemoto
Estimating the term…
According to the present invention, there is provided an illuminating device for illuminating a surface to be illuminated with light passed through a fiber bundle from a light source, wherein the shape of the exit end of the fiber bundle is linear (or narrowly rectangular), to correspond to the shape of the shape of a surface to be illuminated. A microlens array, a lenticular lens surface of which comprises a dense array of concave cylindrical microlenses, being of a shape that corresponds to the shape of the exit end of the fiber bundle, is provided at an end of the fiber bundle. Illumination thereby is effectively free of irregularities in the level of illumination across the surface to be illuminated.
An illuminating device for illuminating a surface to be illuminated with light passed through a fiber bundle from a light source, wherein a microlens array is provided at an end surface of said fiber bundle to uniformly diffuse illuminating light for illuminating a surface to be illuminated or to make illuminating light converge on one portion.
Dependencies are inferred from the claim text.