Image acquisition system
US10310145B2 · kind B2 · utility
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3References
23Claims
0Family size
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Key dates
| Filing date | Sep 6, 2016 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Dec 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/56
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image acquisition system for acquiring iris images for use in biometric recognition of a subject includes an optical system comprising a cluster of at least 2 lenses arranged in front of a common image sensor with each lens optical axis in parallel spaced apart relationship. Each lens has a fixed focus and a different aperture to provide a respective angular field of view. The lens with the closest focus has the smallest aperture and the lens with the farthest focus has the largest aperture so that iris images can be acquired across a focal range of at least from 200 mm to 300 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.