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公开(公告)号：US20200310171A1
公开(公告)日：2020-10-01
申请号：US16827878
申请日：2020-03-24
IPC分类号： G02F1/13 , G01J1/42 , G02F1/1335
摘要： A device for detecting a sparkle effect of a transparent sample arranged in front of an image source, to which also a first polarizer having an optical axis of polarization is associated, wherein the detection device includes an imaging system, and wherein the transparent sample, the first polarizer and the imaging system are arranged along an optical path originated from the image source. The detection device includes a second polarizer, arranged between the transparent sample and the imaging system, having an optical axis of polarization directed at ninety degrees with respect to the optical axis of polarization of the first polarizer.
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公开(公告)号：US20220314519A1
公开(公告)日：2022-10-06
申请号：US17595743
申请日：2020-08-10
发明人： Marika FALCIANO , Paolo CHIAPPERO , Graziano BROCANI , Fabio SCAFFIDI MUTA , Valentina BRUNELLA
摘要： A method for measuring a degree of cross-linking of a component of elastomeric material obtained as a result of a hot-forming process, includes a preliminary calibration step in which a plurality of samples are provided, made of the same material as the component. The samples have different degrees of cross-linking following respective hot-forming processes conducted for different periods of time. The preliminary calibration step includes providing a measuring device having an electrical circuit, in which a voltage generator is arranged in series with metal contacts configured to selectively receive a sample, and an ammeter, positioning a sample between said metal contacts, providing a predetermined voltage value, and detecting the corresponding current value by means of said ammeter. The aforesaid steps are repeated for each sample so as to obtain a calibration map that associates a given degree of cross-linking of the material constituting said component with each determined value of electrical conductivity.
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