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Driving apparatus, and lens apparatus and image pickup apparatus including the same
US9122001B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9122001-B2 |
| Application number | US-201314137045-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 20, 2013 |
| Priority date | Dec 26, 2012 |
| Publication date | Sep 1, 2015 |
| Grant date | Sep 1, 2015 |
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Abstract
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Provided is a driving apparatus for driving a movable optical member, the driving apparatus being removably attached to a lens barrel, the driving apparatus including: a rotary absolute position detector detecting a position of which the movable optical member, the rotary absolute position detector outputting an output value having a unique value with respect to a rotation angle within a range of a single rotation, and the output value having a point of discontinuity at which the output value is discontinuous every single rotation; and a controller performing boundary processing that handles the output value, corresponding to a driving range of the movable optical member, of the rotary absolute position detector having the point of discontinuity as a continuous value.
First claim
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What is claimed is: 1. A driving apparatus for driving an optical member of a lens barrel, the driving apparatus comprising: a rotation detector configured to rotate in conjunction with a rotation of a rotational member that rotates in conjunction with a driving of the optical member to detect a rotational amount of the rotational member, and output a unique value in accordance with a rotation angle of the rotation detector within a range of a single rotation, wherein a change o…
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- What does patent US9122001B2 cover?
- Provided is a driving apparatus for driving a movable optical member, the driving apparatus being removably attached to a lens barrel, the driving apparatus including: a rotary absolute position detector detecting a position of which the movable optical member, the rotary absolute position detector outputting an output value having a unique value with respect to a rotation angle within a range …
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification G02B7/09. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Sep 01 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).