×

Autofocus lens system

  • US 9,581,809 B2
  • Filed: 12/28/2015
  • Issued: 02/28/2017
  • Est. Priority Date: 04/29/2014
  • Status: Active Grant
First Claim
Patent Images

1. A lens system, comprising:

  • a first lens fixedly positioned along an optical axis;

    a second lens fixedly positioned along the optical axis; and

    a focusing-module lens fixedly positioned along the optical axis between the first lens and the second lens and having an aperture stop, the focusing-module lens formed from two adjustable surfaces, wherein the optical power of the adjustable surfaces is controlled electronically to achieve focus, and wherein the focusing-module lens comprises (i) a first transparent deformable membrane having a ring-shaped piezoelectric film contiguously positioned on the first transparent deformable membrane'"'"'s outer surface, (ii) a second transparent deformable membrane having a ring-shaped piezoelectric film contiguously positioned on the second transparent deformable membrane'"'"'s outer surface, and (iii) a flexible polymer contiguously positioned between the first transparent deformable membrane and the second transparent deformable membrane, whereby the flexible polymer is in contact with the respective inner surfaces of the first transparent deformable membrane and the second transparent deformable membrane.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×