Split refracting or split reflecting light received by cellulose-based film comprising surface pattern: Pintakuvioidun selluloosapohjaisen filmin vastaanottaman valon halkaisu-taitto tai halkaisu-heijastus

Tapio Mäkelä (Inventor), Ari Hokkanen (Inventor)

Research output: PatentPatent

Abstract

There is provided detecting modification of optically active cellulose-based film. A method comprises split refracting or split reflecting (302) light received by a surface pattern of an optically active cellulose-based film into a plurality of output light patterns, wherein an output light pattern is determined from the plurality of output light patterns on the basis of a modification applied to the optically active cellulose-based film.

Patent family as of 17.6.2022:
CA3160187 AA20220504CA2020316018720201105 
FI129618 B20220531FI2019000595220191105 
FI20195952 A20210506FI2019000595220191105 
WO21089921 A120210514WO2020FI5073120201105

Link to current patent family on right 

Original languageEnglish
Patent numberFI20195952
IPCG06T 7/ 00 A I
Priority date5/11/19
Publication statusPublished - 6 May 2021
MoE publication typeH1 Granted patent

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