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Fingerprint imaging module and electronic equipment

An imaging module and fingerprint technology, which is applied in the direction of acquiring/organizing fingerprints/palmprints, printing image collection, character and pattern recognition, etc., can solve problems such as fingerprint image deformation, achieve improved fingerprint image magnification, and improve small-angle light components , the effect of reducing the misreading rate

Inactive Publication Date: 2018-10-09
SHANGHAI OXI TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the fingerprint image obtained by the fingerprint imaging module in the prior art is prone to deformation.

Method used

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  • Fingerprint imaging module and electronic equipment
  • Fingerprint imaging module and electronic equipment
  • Fingerprint imaging module and electronic equipment

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Experimental program
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Embodiment Construction

[0035] It can be seen from the background art that the fingerprint imaging module in the prior art has the problem that the acquired fingerprint image is prone to deformation. Combining with a schematic diagram of the cross-sectional structure of a fingerprint imaging module, the reasons for its fingerprint image deformation problem are analyzed:

[0036] refer to figure 1 , shows a schematic cross-sectional structure of a fingerprint imaging module.

[0037] Such as figure 1 As shown, the fingerprint imaging module includes: a light source 12 for generating incident light; a sensing surface 11 on which the incident light forms reflected light carrying fingerprint information; an image sensor 13, It is used to collect the reflected light and convert the optical signal of the reflected light into an electrical signal to obtain a fingerprint image.

[0038] In order to reduce the volume of the fingerprint imaging module, the light source 12 is often a light emitting diode, th...

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Abstract

The invention provides a fingerprint imaging module and electronic equipment. The fingerprint imaging module comprises a line light source used for generating an incident light, a sensing surface on which a reflected light carrying fingerprint information is formed by the incident light, and an image sensor used for acquiring the reflected light to form a fingerprint image, and the projection of the line light source surrounds the projection of the image sensor in the sensing surface. According to the technical scheme, the uniformity of the light intensity of the incident light can be effectively improved, the problem of amplification of the fingerprint image is improved, the misreading rate can be reduced, and the problem of algorithm trouble caused by deformation of the fingerprint imagecan be overcome.

Description

technical field [0001] The invention relates to the field of fingerprint imaging, in particular to a fingerprint imaging module and electronic equipment. Background technique [0002] Fingerprint recognition is to compare the fingerprint image with the existing fingerprint information in the fingerprint recognition system after collecting the human fingerprint image to realize identity recognition. Due to the convenience of use and the uniqueness of human fingerprints, fingerprint recognition technology has been widely used in various fields, such as: public security bureaus, customs and other security inspection fields, building access control systems, and consumer products such as personal computers and mobile phones, etc. [0003] Among the fingerprint imaging technologies used in fingerprint identification, one is to collect human fingerprint images through optical methods: incident light is generated by a light source; the incident light is projected to the surface of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1318
Inventor 辛胜朱虹曲志刚
Owner SHANGHAI OXI TECH
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