Vital fingerprint image collecting plate

A live fingerprint and image acquisition technology, applied in the field of optics, can solve the problems of large size, inconvenient installation, affecting the range or effect of use, etc., and achieve the effect of small size and simple structure

Inactive Publication Date: 2007-01-03
闵瑜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Usually, right-angle prisms or polygonal prisms used for fingerprint collection are inconvenient to install in many devices or occasions due to their large size, which affects the range or effect of use.

Method used

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  • Vital fingerprint image collecting plate
  • Vital fingerprint image collecting plate
  • Vital fingerprint image collecting plate

Examples

Experimental program
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Effect test

Embodiment Construction

[0011] Below in conjunction with accompanying drawing and embodiment the present invention will be described in further detail:

[0012] As shown in FIG. 1 , a live fingerprint image acquisition board is special in that the acquisition board 1 is formed by stacking a plurality of parallel optical thin plates 2 . Such as image 3 As shown, the two ends of the superimposed acquisition board 1 form an oblique angle with the upper and lower sides; the two ends are respectively provided with illumination sources 3 .

[0013] Such as figure 2 As shown, the upper surface 11 of the collection board 1 is the living fingerprint contact surface, the surface 12 is the light absorption surface, the surface 13 is the reflective surface, and the lower surface 14 is the fingerprint image output surface.

[0014] If a beam of parallel light is incident on the lower surface 14, reflected by the surface 13, reaches the surface 12, and is absorbed by the surface 12, a black background will be p...

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PUM

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Abstract

A collection board 1 for the living fingerprint is superimposed by many parallel optics sheets 2. The two end faces of the collection board has some sloping angle with the upside and underside. It can output the clear fingerprint figure because of the light total reflection principle. The board has the small size and light weight, so it can be used for many fingerprint collection device and in many situation.

Description

technical field [0001] The invention belongs to the field of optical technology, in particular to a live fingerprint image acquisition board. Background technique [0002] Usually, right-angle prisms or polygonal prisms used for fingerprint collection are inconvenient to install in many devices or occasions due to their large volume, which affects the range or effect of use. Contents of the invention [0003] The purpose of the present invention is to provide a new type of live fingerprint image acquisition board, which has the characteristics of small size, light weight, easy assembly, etc., and can be used in more devices and occasions. [0004] In order to achieve the above object, technical scheme of the present invention is as follows: [0005] A live fingerprint image collection board, which is special in that the collection board 1 is formed by stacking a plurality of parallel optical thin plates 2 . The two ends of the stacked acquisition board 1 form an oblique ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/20G02B27/00
Inventor 闵瑜
Owner 闵瑜
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