< Topic >As correct recognition rate is raised, offer of the optical fingerprint recognition device which simplifies assembly process.SolutionsFinger C has the finger board 10 which the pushing pressure-contact is done, the opposite aspect 12 of finger board 10 has the light scattering structure 13 of the circular arc gimlet condition which combines the circular face. Image pickup component 20 and at least one luminous element 30 providing interval vis-a-vis finger board 10, it is laid out, it is distributed the light ray from the optical component uniformly inside finger board 10 by light scattering structure 13, fingerprint correct recognition rate improves by being incorporated with the contrast whose reflected light from the fingerprint of the finger which is pressed to finger board 10 is high in image pickup component 20.< Choice figure >Drawing 1【課題】認識率を高めると共に組立工程を簡素化した光学指紋認識装置の提供。【解決手段】指Cが押圧接触する指板10を有し、指板10の反対面12は円弧面を組み合わせた円弧錐状の光散乱構造13を有する。撮像素子20及び少なくとも1つの発光素子30が指板10に対して間隔を設けて配置され、光素子からの光線は光散乱構造13によって指板10内に均一に分布し、指板10に押し当てられた指の指紋からの反射光が撮像素子20に高いコントラストで取込まれることにより、指紋認識率が向上する。【選択図】図1
