Image Lens

Abstract

An imaging lens is disclosed and has an optical axis. The image lens includes a lens barrel having a lens barrel wall arranged around the optical axis and forming an accommodation space; an imaging module including a plurality of near object units and near image units separated from each other and arranged in an order from an object side to an image side in the accommodation space; and a spacing part sandwiched between the near object units and the near image units. The spacing part includes a first reflecting surface facing the near image units and a second reflecting surface connected with the first reflecting surface, the light from the near image units is reflected two times by the first reflecting surface and the second reflecting surface.

Description

FIELD OF THE INVENTION[0001]The present disclosure relates cameras, especially relates to an imaging lens which can eliminate stray light.DESCRIPTION OF RELATED ART[0002]The imaging lens is an important optical component in camera imaging devices. The optical performance of the imaging lens has big influence on imaging quality. General imaging lens mainly includes a lens barrel, a plurality of (two or more) imaging modules and a plurality of spacing modules. Imaging modules are installed inside the lens barrel and the spacing modules can be installed between the lens barrel and the imaging module or between two adjacent imaging modules. When the emitted or reflected light from the object side of the imaging lens enters the lens barrel, the image is formed by the imaging lens on the imaging surface at the image side of the imaging module.[0003]However, because the spacing part has a certain thickness, the stray light reflected from the spacing module's internal wall may go to the ima...

AI Technical Summary

Benefits of technology

[0002]The imaging lens is an important optical component in camera imaging devices. The optical performance of the imaging lens has big influence on imaging quality. General imaging lens mainly includes a lens barrel, a plurality of (two or more) imaging modules and a plurality of spacing modules. Imaging modules are installed inside the lens barrel and the spacing modules can be installed between the lens barrel and the imaging module or between two adjacent imaging modules. When the emitted or reflected light from the object side of the imaging lens enters the lens barrel, the image is formed by the imaging lens on the imaging surface at the image side of the imaging module.

[0022]3. The imaging lens 100 by installing a structure of the spacing part 4 replaces the complex structure composed of plastic spacing part and punched spacing part in related technology, so that the imaging lens 100 can be shaped easily, the cost of material can be reduced.

Problems solved by technology

However, because the spacing part has a certain thickness, the stray light reflected from the spacing module's internal wall may go to the image side surface of the lens and then create flare or ghost.

Especially for the imaging module closest to the object side, the stray light created by the spacing part has more serious affect.

Such a mode can eliminate the stray light reflected from the lens 22 closest to the image side to the plastic spacing part 23 to a certain degree, but this mode has weak light absorption and cannot eliminate completely the stray light reflected from the lens 22 closest to the image side to the plastic spacing part 23, and the structure is too complex, not conducive to reduce the cost.

Images