Lead screw device, lens driver, lens barrel, and camera using the lead screw device
US9726849B2 · kind B2 · utility
1Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 2014 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Jun 2, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lead screw device includes a lead screw including a thread portion, and a driven body which engages with the thread portion, and moves in an axis direction of the lead screw along with rotation of the lead screw about an axis, the driven body including a pair of driven members disposed to sandwich the lead screw in a radial direction, wherein the pair of driven members is biased in a direction which sandwiches the lead screw in the radial direction, and a tooth portion provided in each of the driven members engages with the thread portion of the lead screw by a biasing force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.