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US 11,635,551 B2Granted
Optical zoom device
AssigneeOptotune Consumer AG
InventorManuel Aschwanden
Life of this patent
Estimating the term…
Abstract
The invention relates to an optical zoom device (1) Optical zoom device (1), comprising a first lens assembly (2), and a second lens assembly (3) following the first lens assembly (2) in the direction of an optical axis (A) of the optical zoom device (1) so that light (L) can pass through the first lens assembly (2) and thereafter through the second lens assembly when travelling along the optical axis (A), wherein said lens assemblies each comprise a focus-adjustable lens (31, 32) as well as an electropermanent magnet (107, 207) or a shape memory alloy (120, 220) for actuating the respective lens (31, 32).
Claims20
Optical zoom device, comprising:
- a first lens assembly,
- a second lens assembly following the first lens assembly in the direction of an optical axis of the optical zoom device so that light can pass through the first lens assembly and thereafter through the second lens assembly when travelling along the optical axis, characterized in that
- the first lens assembly comprise a first rigid optical element and an adjacent first focus-adjustable lens, wherein the first focus-adjustable lens comprises a first container and a first reservoir, wherein the first container and the first reservoir are in flow connection and are filled with a transparent fluid,
- wherein the first container comprises a transparent and elastically expandable first membrane contacting the fluid, and wherein the first lens assembly further comprises a first actuator for pumping fluid from the first reservoir into the first container and from the first container into the first reservoir for adjusting a curvature of the first membrane and therewith a focal length of the first focus-adjustable lens, and wherein the first actuator comprises a first electropermanent magnet, and
- wherein the second lens assembly comprise a second rigid optical element and an adjacent second focus-adjustable lens, wherein the second focus-adjustable lens comprises a second container and a second reservoir, wherein the second container and the second reservoir are in flow connection and are filled with a transparent fluid, wherein the second container comprises a transparent and elastically expandable second membrane contacting the fluid, and wherein the second lens assembly further comprises a second actuator for pumping fluid from the second reservoir into the second container and from the second container into the second reservoir for adjusting a curvature of the second membrane and therewith a focal length of the second focus-adjustable lens, and wherein the second actuator comprises a second electropermanent magnet.
2 more elements
Optical zoom device, comprising:
- a first lens assembly,
- a second lens assembly following the first lens assembly in the direction of an optical axis of the optical zoom device so that light can pass through the first lens assembly and thereafter through the second lens assembly when travelling along the optical axis, characterized in that
- the first lens assembly comprise a first rigid optical element and an adjacent first focus-adjustable lens,
- wherein the first focus-adjustable lens comprises a first container and a first reservoir,
- wherein the first container and the first reservoir are in flow connection and are filled with a transparent fluid, wherein the first container comprises a transparent and elastically expandable first membrane contacting the fluid, and
- wherein the first lens assembly further comprises a first actuator for pumping fluid from the first reservoir into the first container and from the first container into the first reservoir for adjusting a curvature of the first membrane and therewith a focal length of the first focus-adjustable lens, and
- wherein the first actuator comprises at least a first spring and at least a first shape memory alloy, and/or
- wherein the second lens assembly comprise a second rigid optical element and an adjacent second focus-adjustable lens, wherein the second focus-adjustable lens comprises a second container and a second reservoir, wherein the second container and the second reservoir are in flow connection and are filled with a transparent fluid,
- wherein the second container comprises a transparent and elastically expandable second membrane contacting the fluid, and wherein the second lens assembly further comprises a second actuator for pumping fluid from the second reservoir into the second container and from the second container into the second reservoir for adjusting a curvature of the second membrane and therewith a focal length of the second focus-adjustable lens, and wherein the second actuator comprises at least a second spring and at least a second shape memory alloy.
6 more elements
Dependencies are inferred from the claim text.