Patent ID: 11947073
Assignee: TWENTY TWENTY THERAPEUTICS LLC
Field: Optics (Instruments)
Classification: CPC G  B | IPC B  G

Claim 19:
20. The eye-mountable device of claim 1, further comprising a third rigid polymer layer having a third-layer refractive index and a second liquid crystal layer between the second rigid polymer layer and the third rigid polymer layer, wherein
the second liquid crystal layer has an ordinary refractive index and an extraordinary refractive index,
the second-layer refractive index and the third-layer refractive index differ by less than 0.01,
the ordinary refractive index and the extraordinary refractive index of the second liquid crystal layer differ by more than 0.1, and
the first-layer refractive index differs from either the ordinary refractive index or the extraordinary refractive index by less than 0.01.