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CN-115079484-B - Lens module and glasses

CN115079484BCN 115079484 BCN115079484 BCN 115079484BCN-115079484-B

Abstract

The application relates to a lens module and glasses, wherein the lens module comprises a lens body and a power supply circuit, the lens body comprises a flexible film limiting a cavity and transparent liquid accommodated in the cavity, a conductive block array is arranged on the flexible film and comprises a plurality of conductive blocks spaced from each other, and the power supply circuit is used for providing driving voltage for the conductive blocks in the conductive block array so as to change the curvature of the flexible film. In this way, when the voltage of each conductive block is continuously changed, the curvature of the flexible film is also continuously changed, so that the lens power can be continuously adjusted. The position of the optical center of the lens can be adjusted by applying a maximum or minimum voltage to a particular conductive block. Because the curvature of the flexible film is changed by electrifying the conductive blocks on the flexible film, a complex mechanical structure is not needed, the complexity of the lens structure is low, and the light-transmitting caliber of the lens module is large.

Inventors

  • YE WANJUN

Assignees

  • OPPO广东移动通信有限公司

Dates

Publication Date
20260505
Application Date
20220629

Claims (17)

  1. 1. A lens module, comprising: The lens comprises a lens body, a power supply circuit and a transparent liquid, wherein the lens body comprises a flexible film defining a cavity and transparent liquid accommodated in the cavity, and a conductive block array is arranged on the flexible film and comprises a plurality of conductive blocks which are mutually spaced; The power supply circuit determines the driving voltage of each conductive block corresponding to the target diopter according to the target diopter and the distance between each conductive block and the optical center of the lens module, and provides the largest driving voltage for the conductive block closest to the optical center, and provides sequentially decreasing driving voltages for a plurality of annular areas with the increasing distance, so that attractive force or repulsive force is generated between the plurality of conductive blocks, and the upper surface and the lower surface of the flexible film are extruded or expanded to generate deformation under the action of the attractive force or repulsive force to change the curvature of the flexible film, wherein the optical center is determined according to the pupil distance of eyes of a user; The power supply circuit is also used for adjusting the optical center of the lens module by changing the position of the maximum voltage provided to the conducting block array.
  2. 2. The lens module of claim 1, wherein the flexible membrane comprises a first flexible membrane and a second flexible membrane; a first conductive block array is arranged on the surface of the first flexible film, a second conductive block array is arranged on the surface of the second flexible film, and each conductive block in the first conductive block array and each conductive block in the second conductive block array are oppositely arranged through the transparent liquid; the power supply circuit is configured to provide a first voltage to a first conductive bump in the first conductive bump array and a second voltage to a second conductive bump opposite the first conductive bump in the second conductive bump array, the second voltage being different from the first voltage.
  3. 3. The lens module of claim 2, wherein the lens body further comprises a support, the first flexible membrane and the second flexible membrane being disposed opposite one another across the support, the first flexible membrane, the second flexible membrane, and the support surrounding the cavity.
  4. 4. The lens module of claim 3, further comprising an elastic container in communication with the cavity through a through hole provided in the support for containing or injecting a transparent liquid overflowing from the cavity.
  5. 5. The lens module according to claim 3 or 4, wherein the thickness of the supporting member is 1-4 mm, and the supporting member is made of at least one of polycarbonate and polymethyl methacrylate.
  6. 6. The lens module of any one of claims 2 to 4, wherein the first flexible membrane and the second flexible membrane are transparent membranes, and the array of conductive bumps is disposed on a surface of the transparent membrane facing away from the transparent liquid.
  7. 7. The lens module according to claim 6, wherein the transparent film has a thickness of 50-300 μm, and the transparent film is made of at least one of polydimethylsiloxane, polyethylene terephthalate, polycarbonate and polymethyl methacrylate.
  8. 8. The lens module of any one of claims 1 to 4, wherein the conductive bumps are indium tin oxide, ITO, conductive bumps.
  9. 9. The lens module of any one of claims 1 to 4, wherein each of the conductive blocks is rectangular and has a side length in the range of 100-1000 μm, and a spacing between two adjacent conductive blocks is in the range of 10-200 μm.
  10. 10. An ophthalmic lens comprising the lens module of any one of claims 1 to 9.
  11. 11. The eyewear of claim 10, further comprising a first connector and an optical waveguide lens, the optical waveguide lens being laminated to the lens module by the first connector.
  12. 12. The eyewear of claim 11, further comprising a second connector and a protective lens, wherein a side of the optical waveguide lens facing away from the lens module is laminated to the protective lens by the second connector.
  13. 13. The eyewear of any one of claims 10-12, further comprising a controller coupled with the lens module; the controller is used for determining the driving voltage of each conductive block in the conductive block array on the lens module according to the target diopter number, and providing corresponding driving voltage for each conductive block so as to change the curvature of the flexible film of the lens module.
  14. 14. The eyewear of claim 13 wherein said controller is further configured to divide the tiles of said array of tiles into a plurality of annular regions based on the optical center and to determine the voltage across each of said annular regions based on said target diopter number to determine the drive voltage for each of said tiles in each of said annular regions.
  15. 15. The eyewear of claim 14, wherein the voltage across the conductive bumps of each of said annular regions is inversely or positively correlated with the distance between said annular region and said optical center.
  16. 16. The eyewear of claim 14, wherein the controller is configured to control a voltage polarity of a first conductive patch in a first array of conductive patches on a first flexible film to be opposite a voltage polarity of a second conductive patch in a second array of conductive patches on a second flexible film opposite the first conductive patch, in the event that the target diopter is near vision, wherein a distance between the first conductive patch and the optical center is less than a preset first distance threshold.
  17. 17. The eyewear of claim 14, wherein the controller is configured to control a voltage polarity of a first conductive block in a first array of conductive blocks on a first flexible film to be the same polarity as a voltage polarity of a second conductive block in a second array of conductive blocks on a second flexible film opposite the first conductive block, in the case where the target diopter is distance vision, the distance between the first conductive block and the optical center being less than a preset second distance threshold.

Description

Lens module and glasses Technical Field The application relates to the technical field of glasses, in particular to a lens module and glasses. Background With the continuous development of display technology, lenses with adjustable focal length gradually replace lenses with fixed focal length, such as myopia glasses, cameras, mobile phones, virtual reality devices, augmented reality devices and the like. In the prior art, an elastic film liquid lens is generally adopted to realize a lens with adjustable focal length, and the realization principle is that high refractive index liquid is packaged in a flexible film, a mechanical structure is designed for the flexible film, external force is generated by controlling the mechanical structure to squeeze the periphery of the film, the curvature of the center of the film changes along with the film, namely, the focal length of the lens changes, so that the degree of the lens is changed, and meanwhile, if the applied external force continuously changes, the curvature radius of the center of the film also continuously changes, so that the continuous adjustment of the degree of the lens can be realized. However, the conventional elastic film liquid lens has a complicated mechanical structure, and the adjustment of the optical center of the lens cannot be achieved. Disclosure of Invention Based on the above, the embodiment of the application provides a lens module and glasses, which can reduce the complexity of a lens structure and realize the adjustment of the optical center of the lens on the premise of realizing the continuous adjustment of the lens power. In a first aspect, a lens module is provided that includes a lens body including a flexible membrane defining a cavity, and a transparent liquid contained within the cavity, the flexible membrane having disposed thereon an array of conductive bumps comprising a plurality of conductive bumps spaced apart from one another, and And the power supply circuit is used for providing driving voltage for the conductive blocks in the conductive block array so as to change the curvature of the flexible film. In a second aspect, there is provided an eyeglass comprising the lens module of any one of the first aspects. The lens module comprises a lens body and a power supply circuit, wherein the lens body comprises a flexible film and transparent liquid, the flexible film is used for limiting a cavity, the transparent liquid is contained in the cavity, the flexible film is provided with a conductive block array, the conductive block array comprises a plurality of conductive blocks which are spaced from each other, and the power supply circuit is used for providing driving voltage for the conductive blocks in the conductive block array so as to change the curvature of the flexible film. In this way, when the voltage of each conductive block is continuously changed, the curvature of the flexible film is also continuously changed, so that the lens power can be continuously adjusted. In addition, by applying a maximum or minimum voltage to a specific conductive block, the position of the optical center of the lens can be adjusted. Because the curvature of the flexible film is changed by electrifying the conductive blocks on the flexible film, and a complex mechanical structure is not needed, compared with the elastic film liquid lens in the prior art, the lens module has lower complexity of the lens structure and larger light-transmitting caliber. Drawings Fig. 1 is a schematic diagram of a lens module according to an embodiment of the application; FIG. 2 is a schematic diagram of a flexible membrane and a cavity in a lens module according to an embodiment of the present application; FIG. 3 is a schematic diagram of a deformed cavity of a lens module according to an embodiment of the present application; FIG. 4 is a schematic diagram of an array of conductive bumps on a flexible film in a lens module according to an embodiment of the present application; Fig. 5 is a schematic diagram of connection between each conductive block of a conductive block array on a flexible film in a lens module and a power supply circuit according to an embodiment of the present application; FIG. 6 is a schematic diagram illustrating the position of an optical center in a lens module according to an embodiment of the present application; FIG. 7 is a schematic diagram of different annular regions of a lens module based on optical center position determination according to an embodiment of the present application; FIG. 8 is a schematic diagram of a deformed cavity of another lens module according to an embodiment of the present application; FIG. 9 is a schematic diagram of a flexible membrane and a cavity in another lens module according to an embodiment of the present application; FIG. 10 is a schematic view of a flexible membrane and a cavity in another lens module according to an embodiment of the present application; FIG. 11 is a schematic diagram of