US 12,391,830 B2
Liquids for tunable optical devices
David Andreas Niederer, Küttigen (CH); Andreas Brändle, Zürich (CH); and Marta Vidiella del Blanco, Dietikon (CH)
Assigned to Optotune AG, Dietikon (CH)
Filed by Optotune AG, Dietikon (CH)
Filed on Feb. 25, 2022, as Appl. No. 17/680,351.
Claims priority of application No. 10 2021 104 571.1 (DE), filed on Feb. 25, 2021.
Prior Publication US 2022/0289978 A1, Sep. 15, 2022
Int. Cl. G02B 3/14 (2006.01); C08L 83/04 (2006.01); C08L 83/08 (2006.01)
CPC C08L 83/04 (2013.01) [C08L 83/08 (2013.01); G02B 3/14 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An optical tuneable device comprising a volume and a membrane, wherein the membrane delimits the volume at least partially and the volume is filled with a liquid comprising at least one compound of formula 1,

OG Complex Work Unit Chemistry
wherein
each R1 is independently from any other R1 selected from Cx-alkyl-A, particularly
each R1 is selected from Cx-alkyl-A, with
A being selected from —H, —CN, phenyl, —(CH2)-phenyl and —CF3, and
x being an integer between 3 and 20,
each R2 is independently from any other R2 selected from Cy-alkyl, Cy-alkyl-B, phenyl, —(CH2)-phenyl, in particular from any other R2 selected from —H, Cy-alkyl, phenyl, —(CH2)-phenyl, with
B being selected from —CN, phenyl, —(CH2)-phenyl and —CF3, in particular —CF3 and —CN
y being an integer between 1 and 17
R3, R4, R5, R6, R7 and R8 are independently selected from —H, C1-4-alkyl, phenyl, and —(CH2)-phenyl,
n is an integer between 1 and 50,
the sum of x and y is ≤21,
and wherein
the membrane is a polydimethylsiloxane (PDMS) membrane or a substituted PDMS, in particular an unsubstituted PDMS.