Imaging lens
An imaging lens and lens technology, applied in the field of imaging lenses, can solve the problems of insufficient color and contrast, large transmittance deviation, and low dynamic range, and achieve good color and contrast, good high and low temperature performance, and reduced tolerance sensitivity. Effect
Pending Publication Date: 2021-02-02
舜宇光学(中山)有限公司
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Problems solved by technology
With the development of the imaging lens industry, various imaging lenses are available, but these imaging lenses have poor optical resolution and large imaging distortion.
It can be seen that although the imaging lens in the prior art has a wide shooting range, its imaging is not fine enough, the dynamic range is not high during imaging, the color and contrast are not good enough, and its transmittance has a large deviation
Therefore, the application field of this lens is limited, especially in some high-precision high-tech fields
Method used
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[0048] In order to more clearly describe the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that are used in the embodiments. Apparently, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to these drawings without creative efforts.
[0049] When describing the embodiments of the present invention, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", " The orientation or positional relationship expressed by "horizontal", "top", "bottom", "inner" and "outer" is based on the orientation or positional relationship shown in the relevant drawings, which are only for the convenience of describing the present invention and simplifying the description, and It is not to indicate or imply that the device or element referred to must have a particu...
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The invention relates to an imaging lens which comprises a first lens group (1), a diaphragm (2) and a second lens group (3) which are sequentially arranged from an object side to an image side alongan optical axis, the first lens group (1) comprises at least five lenses, the second lens group (3) comprises four lenses, the first lens group (1) is a fixed group, and the second lens group (3) is afocusing group. The imaging lens is finer and smoother in imaging, higher in dynamic imaging range, larger in depth of field, better in color and contrast, better in high and low temperature performance and wider in application range, and meanwhile, due to the small distortion characteristic of the lens, the visual field of the lens is wider.
Description
technical field [0001] The invention relates to the technical field of optical imaging, in particular to an imaging lens. Background technique [0002] Machine vision is a comprehensive technology, including image processing, mechanical engineering technology, control, electric light source lighting, optical imaging, sensors, analog and digital video technology, computer software and hardware technology (image enhancement and analysis algorithms, image cards, I / O card, etc.). A typical machine vision application system includes image capture, light source system, image digitization module, digital image processing module, intelligent judgment decision-making module and mechanical control execution module. With the development of the imaging lens industry, various imaging lenses come out, but these imaging lenses have poor optical resolution and relatively large imaging distortion. It can be seen that although the imaging lens in the prior art has a wide shooting range, its...
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IPC IPC(8): G02B13/00G02B1/00
CPCG02B1/00G02B13/00
Inventor 詹坤河周静胡可欣
Owner 舜宇光学(中山)有限公司