Patent ID: 11911845
Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
Field: Machine tools (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A light guide device, comprising:
a first light guide part reflecting and guiding light emitted from a light source;
a rotatable polygon mirror including a first reflective part and a second reflective part, each of the first and second reflective parts including an upstream reflective surface and a downstream reflective surface each configured to reflect the light guided by the first light guide part such that an optical axis of the light offsets in a rotation axis direction; and
a second light guide part reflecting the light reflected by the first and second reflective parts of the polygon mirror and guiding the light so that the light is irradiated to an irradiation target at each of the first and second reflective parts,
wherein a first position of the first reflective part is indicative of (A) a first boundary position between the upstream reflect surface of the first reflective part and the downstream reflective surface of the first reflective part and (B) a first position on a central axis of the polygon mirror,
wherein a second position of the second reflective part is indicative of (A) a second boundary position between the upstream reflect surface of the second reflective part and the downstream reflective surface of the second reflective part and (B) a second position on the central axis of the polygon mirror, and
wherein the first position of the first reflective part is different from the second position of the second reflective part.