Encoder, robot and printer
AssigneeSeiko Epson Corporation
InventorsDaiki TOKUSHIMA, Takayuki KONDO
Life of this patent
Estimating the term…
Abstract
An encoder includes a base part, a rotation part provided rotatably about a rotation axis relative to the base part, an irregular pattern placed along about the rotation axis in the rotation part, an image pickup device placed in the base part and capturing the pattern, and a determination part that determines a rotation state of the rotation part relative to the base part using an imaging result of the image pickup device.
Claims20
An encoder comprising:
- a base part;
- a rotation part provided rotatably about a rotation axis relative to the base part;
- an irregular pattern placed along about the rotation axis in the rotation part;
- an image pickup device placed in the base part and capturing the pattern;
- and
- a determination part that determines a rotation state of the rotation part relative to the base part using an imaging result of the image pickup device.
The encoder according to claim wherein the determination part can change at least one of a position and a length of the search area in a first direction within the captured image based on information on an angular velocity about the rotation axis of the rotation part.
Dependencies are inferred from the claim text.