Lens barrel and imaging device and hand-held data terminal device including the same
US8405922B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 2011 |
| Grant date | Mar 26, 2013 |
| Priority date | — |
| Expiry date | Jun 18, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/667
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A lens barrel includes a plurality of lens groups including first and second lens groups positioned closer to an imaging plane than the first lens group, a plurality of lens group frames including first and second lens group frames holding the first and second lens groups, respectively, a rotary cylinder to engage with the first lens group frame via a cam groove, surround the first lens group frame and be rotated around an optical axis to move the first lens group in the optical axis direction, a rotation transmission system to transmit a rotary force of the rotary cylinder, and a second frame driver provided inside of the first lens group frame and engaging with the second lens group frame via a cam groove to move the second lens group in the optical axis direction by the rotary force of the rotary cylinder transmitted via the rotation transmission system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.