Polygon mirror
AssigneeKonica Corporation
InventorsKazuhiko Murakoshi, Toshio Shimura
Life of this patent
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Abstract
The invention provides a rotatable polygon mirror consisting of (a) cylindrical boss being disposed at the center part of polygon and having a hole therein, (b) side plate being disposed at each side of polygon, the outer surface of the side plate forming a mirror surface, (c) connecting-plate for connecting between the cylindrical boss and the side plate, and rib being radially disposed between the cylindrical boss and each corner of polygon.
Claims12
A rotatable polygonal mirror comprising a boss at a center of a polygon and having a hole therein,
- side members each constituting a side of said polygon, an outer surface of each of said side members forming a mirror surface, each of said side members having ends at a boundary between adjacent side members, each of said side members having a center intermediate said ends, the thickness of said side members gradually decreasing from said ends toward said center,
- a plate between said boss and each of said side members, and a rib extending radially from said boss to each said boundary.
A rotatable polygonal mirror comprising a boss at a center of a polygon and having a hole therein,
- side members each constituting a side of said polygon, an outer surface of each of said side members forming a mirror surface, each of said side members having ends at a boundary between adjacent side members,
- a plate between said boss and each of said side members, a rib extending radially from said boss to each said boundary, each of said side members having a joint at or adjacent said boundary and being thinner from the inside of each of said side members at or adjacent said joint.
Dependencies are inferred from the claim text.