Patents by Inventor Ranran LU

Ranran LU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • OPTICAL SYSTEM, LENS MODULE, AND ELECTRONIC DEVICE
    Publication number: 20260219477
    Abstract: The optical system includes a stop, a first lens having a positive focal power. A value of N is 7 or 8. A second lens has a positive focal power. An object side surface that is of the second lens and that is near the optical axis is a convex surface, and an image side surface that is of the second lens and that is near the optical axis is a concave surface. A third lens has a negative focal power. An object side surface that is of the third lens and that is near the optical axis is a concave surface, and an image side surface that is of the third lens and that is near the optical axis is a convex surface. The optical system further satisfies: ?4?SAGn2/CTn??2, 1?SPn?1/(CTn?1+CTn)?1.8, and (2×IMH/TTL)2/FNO?1.5.
    Type: Application
    Filed: December 12, 2023
    Publication date: July 30, 2026
    Inventors: Sichen LONG, Kaiyuan ZHANG, Ranran LU