Method for detecting fingerprints using a laser and an apparatus therefor
    2.
    发明授权
    Method for detecting fingerprints using a laser and an apparatus therefor 失效
    用于使用激光器检测指纹的方法及其装置

    公开(公告)号:US4708882A

    公开(公告)日:1987-11-24

    申请号:US810988

    申请日:1985-12-19

    IPC分类号: A61B5/117 G01N21/64 A61B5/10

    摘要: In one aspect of the invention, the sample surface is wetted with an aqueous solution of a fluorescent dye followed by rinses with water to remove an excessive amount of the dye so that the background fluorescence emission can be minimized to increase the efficiency of fingerprint detection. In another aspect, the fluorescent dye or a reagent to produce fluorescent substance is deposited on the sample surface by attaching a gelatin film impregnated with a solution thereof followed by peeling. In a further different aspect, a powdery fluorescent dye is deposited on to the sample surface followed by spraying of water after removing an excessive amount of the powdery dye so that the background fluorescence can be minimized. The invention also provides an apparatus for the fingerprint detection by the laser beam excitation of fluorescence, which is compact and portable as being composed of an ingenious combination of several units into an integral system.

    摘要翻译: 在本发明的一个方面,将样品表面用荧光染料的水溶液润湿,然后用水冲洗以除去过量的染料,使得背景荧光发射可以最小化,以提高指纹检测的效率。 另一方面,荧光染料或产生荧光物质的试剂通过附着浸渍有溶液的明胶膜然后剥离而沉积在样品表面上。 在另一个不同的方面,将粉末状荧光染料沉积到样品表面上,然后在除去过量的粉末染料之后喷洒水,使得背景荧光可以最小化。 本发明还提供了一种用于通过激光束激发荧光进行指纹检测的装置,其是紧凑且便携的,由几个单元的巧妙组合组成一个整体系统。

    Method for detecting fingerprints using a laser and an apparatus therefor
    3.
    发明授权
    Method for detecting fingerprints using a laser and an apparatus therefor 失效
    用于使用激光器检测指纹的方法及其装置

    公开(公告)号:US4794260A

    公开(公告)日:1988-12-27

    申请号:US933032

    申请日:1987-02-10

    摘要: In one aspect of the invention, the sample surface is wetted with an aqueous solution of a fluorescent dye followed by rinses with water to remove an excessive amount of the dye so that the background fluorescence emission can be minimized to increase the efficiency of fingerprint detection. In another aspect, the fluorescent dye or a reagent to produce fluorescent substance is deposited on the sample surface by attaching a gelatinous film impregnated with a solution thereof followed by peeling. In a further different aspect, a powdery fluorescent dye is deposited on to the sample surface followed by spraying of water to wash away an excessive amount of the powdery dye so that the background fluorescence can be minimized. The invention also provides an apparatus for the fingerprint detection by the laser beam excitation of fluorescence, which is compact and portable as being composed of an ingenious combination of several units into an integral system.

    摘要翻译: 在本发明的一个方面,将样品表面用荧光染料的水溶液润湿,然后用水冲洗以除去过量的染料,使得背景荧光发射可以最小化,以提高指纹检测的效率。 在另一方面,荧光染料或产生荧光物质的试剂通过附着浸渍有溶液的凝胶状膜然后剥离而沉积在样品表面上。 在另一方面,将粉末状荧光染料沉积在样品表面上,然后喷洒水以洗去过量的粉末染料,使背景荧光可以最小化。 本发明还提供了一种用于通过激光束激发荧光进行指纹检测的装置,其是紧凑且便携的,由几个单元的巧妙组合组成一个整体系统。