Patent ID: 11927747
Assignee: JIANGXI LIANCHUANG ELECTRONIC CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H  B | IPC B  G  H

Claim 14:
15. A monitoring system, comprise a camera module, a memory and a processor, wherein the camera module is configured for generating image data, the memory is configured for storing the image data, the processor is configured for processing the image data, and the camera module comprises:
a lens barrel, comprising a receiving space and a light entrance communicated with the receiving space;
a lens group, received in the receiving space;
a first lens, disposed at the light entrance and having an image side surface, wherein the image side surface comprises a curved surface opposite to the lens group and an annular flat surface connected to the curved surface;
a front cover, engaged with the lens barrel and the first lens; and
a heating element, attached to the annular flat surface and configured to heat the first lens;
wherein the image side surface of the first lens comprises an optical-effective lateral portion and a non-optical-effective lateral portion surrounding the optical-effective lateral portion, the non-optical-effective lateral portion is provided on the annular flat surface, and the heating element is disposed only at the non-optical-effective lateral portion;
the heating element comprises a heating film and a buffer layer, both the heating film and the buffer layer are annular, the heating film is attached to the image side surface of the first lens, and the buffer layer is positioned between the heating film and the lens barrel; and the heating film comprises two electrical insulating films and a heating resistor layer, the heating resistor layer is sandwiched between the two electrical insulating films.