Imaging lens system

An imaging lens and lens technology, applied in optical components, optics, instruments, etc., can solve the problems of increasing the total length of the lens system, unable to fully correct aberrations, etc., and achieve the effect of small and light structure and excellent optical performance.
CN105223674AInactive Publication Date: 2016-01-06KOLEN
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
KOLEN
Publication Date
2016-01-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an imaging lens system. The imaging lens system successively comprises a first lens having positive refractive power, a second lens having negative refractive power and a third lens having negative refractive power from the object side to the image side; and a visual angle [theta] meets the following condition: 0.3<|tan[theta]|<0.8.
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Description

technical field

[0001] The invention relates to an imaging lens system. Background technique

[0002] Cameras using solid-state image sensors, such as charge coupled device (CCD) or complementary metal oxide semiconductor (CMOS) image sensors, have rapidly become popular.

[0003] In order to increase the resolution of the camera, it is necessary to increase the pixel integration of the solid-state image sensor. And, as the cameras become smaller and lighter due to the improvement in performance of lens optics built therein, the cameras are being widely integrated into various mobile devices.

[0004] In lens optics included in these cameras, desired performance can be obtained when the number of lenses is increased; however, increasing the number of lenses is not suitable for lower-cost compact and lightweight cameras. Therefore, a design suitable for obtaining desired performance of a compact and lightweight camera is necessary.

[0005] In such lens design, a method of...

Claims

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