Patent ID: 11966042
Assignee: ADLENS LTD
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 2:
3. The augmented reality display unit as claimed in claim 1, wherein the front compression liquid lens assembly is configured such that its membrane in its least distended form has a curvature away from the second wall of the front compression liquid lens assembly that is greater than the curvature of the second wall of the front compression liquid lens assembly, the second wall of the rear compression liquid lens assembly is formed by or supported on an inner surface of a hard lens of fixed focusing power, and the rear compression liquid lens assembly is configured such that the membrane of the rear compression liquid lens assembly in its least distended form has a curvature away from the second wall of the rear compression liquid lens assembly that is less than the curvature of the second wall of the rear compression liquid lens assembly; and wherein the transparent plate or hard lens of the front compression liquid lens assembly is tilted towards a first region of the edge of the membrane of the front compression liquid lens assembly, the hard lens of the rear compression liquid lens assembly is tilted away from a second region of the edge of the membrane of the rear compression liquid lens assembly, the first and second regions of the edges of the membranes of the respective front and rear compression liquid lens assemblies being mutually aligned, and the optical axis is located in an off-centre position towards the aligned first and second regions of the respective front and rear compression liquid lens assemblies.