Vehicle-mounted camera module

Abstract

The invention relates to a vehicle-mounted camera module, comprising a lens (11), a lens base (12) which is used for mounting the lens (11), a circuit board (13), and a supporting piece (14), whereinthe circuit board (13) is connected with the supporting piece (14); the supporting piece (14) is provided with a through hole (141) connected with a supporting foot (121) of the lens base (12); the supporting foot (121) penetrates through the through hole (141); and the extending end (1211) of the supporting foot (121) is fixedly connected with the side, away from the lens base (12), of the supporting piece (14). Through the supporting piece, deformation of the circuit board can be restrained, and deformation of the lens base can be restrained, and a good imaging effect is achieved under the condition that it is guaranteed that the environment temperature change is large.

Description

technical field [0001] The invention relates to a camera module, in particular to a vehicle-mounted camera module. Background technique [0002] With the application of intelligence and unmanned driving, vehicle-mounted camera modules, as the visual system of automobiles, are more and more used in automobiles. With the increase of demand, the pixels of vehicle camera modules are getting higher and higher, and the requirements for vehicle camera modules are getting higher and higher. In the existing vehicle-mounted camera module, the lens and the mirror base are assembled by thread or glue, and the mirror base and the upper surface of the circuit board (ie, the side where the photosensitive chip is arranged) are assembled by glue. This kind of vehicle-mounted camera module has poor imaging stability when working at high temperature / low temperature. Due to the principle of thermal expansion and cold contraction, the temperature rises and the object expands. At high temperat...

AI Technical Summary

Problems solved by technology

At high temperature, the lens base, feet, and glue expand due to heat, which drives the lens to move away from the circuit board, resulting in an increase in the distance between the chip and the lens, resulting in blurred images

[0003] In addition, the circuit board is easily deformed under long-term power-on work

Because the chip heats up after working for a long time, which causes the temperature of the circuit board to rise. Due to the uneven temperature and the different thermal expansion coefficients of the circuit board materials, the circuit board is deformed, such as the circuit board protruding and the distance between the chip and the lens is reduced. , resulting in blurred images; or the depression of the circuit board increases the distance between the chip and the lens, resulting in blurred images

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