Orientation independent coma compensating liquid lens
AssigneeOptotune Switzerland AG
InventorsDavid Andreas NIEDERER, Stephan SMOLKA
Life of this patent
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Abstract
The present invention relates to a lens (1), comprising: a first chamber (C1) filled with a first transparent liquid (L1) comprising a first mass density (ρ1) and a first refractive index (n1), a second chamber (C2) filled with a second transparent liquid (L2) comprising a second mass density (ρ2) and a second refractive index (n2), and a transparent and elastically deformable first membrane (12) that separates the two chambers (C1, C2) from one another and contacts the first liquid (L1) and the second liquid (L2), wherein said mass densities (ρ1, ρ2) and said refractive indices (n1, n2) are selected such that a gravity-induced coma aberration of the lens (1) is reduced or prevented.
Claims20
A lens (1), comprising:
- a first chamber (C1) filled with a first transparent liquid (L1) comprising a first mass density (ρ1) and a first refractive index (n1),
- a second chamber (C2) filled with a second transparent liquid (L2) comprising a second mass density (ρ2) and a second refractive index (n2), and
- a transparent and elastically deformable first membrane (12) that separates the two chambers (C1, C2) from one another and contacts the first liquid (L1) and the second liquid (L2), wherein said mass densities (ρ1, ρ2) and said refractive indices (n1, n2) are selected such that an acceleration-dependent aberration is reduced or prevented,
- wherein the first mass density (ρ1) is smaller than the second mass density (ρ2), and wherein the first refractive index (n1) is greater than the second refractive index (n2), or
- wherein the first mass density (ρ1) is greater than the second mass density (ρ2), and wherein the first refractive index (n1) is smaller than the second refractive index (n2),
- wherein the first chamber (C1) is limited by a rigid first cover element (11) opposite to the first membrane (12) and by a first lateral wall (10) that is compliant, and
- wherein the second chamber (C2) is limited by a rigid second cover element (22) opposite the first membrane (12) and by a second lateral wall (20) that is compliant.
A lens (1), comprising:
- a first chamber (C1) filled with a first transparent liquid (L1) comprising a first mass density (ρ1) and a first refractive index (n1),
- a second chamber (C2) filled with a second transparent liquid (L2) comprising a second mass density (ρ2) and a second refractive index (n2), and
- a transparent and elastically deformable first membrane (12) that separates the two chambers (C1, C2) from one another and contacts the first liquid (L1) and the second liquid (L2), wherein said mass densities (ρ1, ρ2) and said refractive indices (n1, n2) are selected such that an acceleration-dependent aberration is reduced or prevented,
- wherein the first mass density (ρ1) is smaller than the second mass density (ρ2), and wherein the first refractive index (n1) is greater than the second refractive index (n2), or
- wherein the first mass density (ρ1) is greater than the second mass density (ρ2), and wherein the first refractive index (n1) is smaller than the second refractive index (n2),
- wherein the first chamber (C1) is limited by a rigid first cover element (11) opposite to the first membrane (12),
- wherein the second chamber (C2) is limited by a rigid second cover element (22) opposite the first membrane (12),
- wherein the lens (1) comprises an actuator (51) and a pump reservoir (50) in flow connection with the first chamber (C1), wherein the actuator (51) is configured to pump first liquid (L1) from the pump reservoir (50) into the first chamber (C1) or from the first chamber (C1) into the pump reservoir (50) to adjust the curvature of the first membrane (12), therewith the focal length of the lens (1).
Dependencies are inferred from the claim text.