Mitsubishi Electric Corporation

Chisako Oda

Junichi Nishimae

Daiji Morita

Nobutaka Kobayashi

A beam shaping device includes an SAC and an FAC. The SAC is placed between an LD bar and the FAC. A first incident surface and a first exit surface are formed in the SAC. The first incident surface includes a plurality of incident-side lens surfaces aligned in a slow axis direction X. The incident-side lens surfaces each have, in section orthogonal to a fast axis direction Y, a shape convexed toward the outside of the SAC and, in section orthogonal to the slow axis direction X, a shape concaved toward the inside of the SAC. The shape of the first incident surface and the shape of the first exit surface in section orthogonal to the slow axis direction X are concentric arcs having a point on an emission end surface of a light emitting layer as the center.

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Tokyo, Japan

Chisako Oda