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Fingerprint imaging
专利权人:
The Mayor's Office for Policing and Crime
发明人:
Nick Marsh
申请号:
GB201612804
公开号:
GB2542888A
申请日:
2016.07.25
申请国别(地区):
GB
年份:
2017
代理人:
摘要:
An imaging apparatus comprises a camera, 20, and a housing, 10, in which is contained a support, 24, for a lifted fingermark (fingerprint, palm print, footprint, lift), spaced from the camera. A first light source, 22, is positioned on the same side of the support as the camera, such that when a fingermark, 30, is located in the support, light from the source may be reflected from the fingerprint into the camera. A light absorbent material (e.g. black velvet), 28, is placed beneath the support to improve the contrast of this image. A second light source, 26, is positioned on the opposite side of the support as the camera, such that when a fingermark is located in the support, light from the second light source may be transmitted through the fingermark into the camera. The housing may be divided into two compartments, 12, 14, with the support situated between the two compartments. The first and second light sources may be provided by separate light generators. The light absorbent material may be mounted on a movable member and its movement may expose the second light source.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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