Shooting lens for road traffic scene
A road traffic and lens technology, applied in the field of road traffic scene shooting lens, can solve the problems of small receiving aperture, narrow shooting range, large imaging blur size, etc., and achieve the effect of large relative aperture, high relative illuminance, and super large field of view
Active Publication Date: 2021-01-29
PUTIAN UNIV
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Problems solved by technology
[0003] The object of the present invention is to provide a camera lens for road traffic scenes, to solve the problems of narrow shooting range, small receiving aperture, and large imaging blur size in the prior art of road traffic scene monitoring optical lenses
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[0016] Such as Figure 1-4 Shown, a lens for shooting road traffic scenes, including a first lens group 10 with negative refractive power, an aperture stop 20 and a second lens group 30 with positive refractive power arranged in sequence along the incident direction of light; The first lens group includes a first lens L1 of negative refractive power, a second lens L1 of negative refractive power, a third lens L3 of negative refractive power, and a fourth lens L4 of positive refractive power arranged in sequence; The second lens group includes a cemented group composed of a fifth lens L5 with positive refractive power and a sixth lens L6 with negative refractive power arranged in sequence, and a seventh lens L7 with positive refractive power.
[0017] In this embodiment, both the object-side and image-side optical surfaces of the first lens L1 are convex toward the object side, the object-side optical surface of the second lens L2 is convex toward the image side, and the image-...
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The invention relates to a shooting lens for a road traffic scene. The shooting lens comprises a first lens group with negative focal power, an aperture diaphragm and a second lens group with positivefocal power, wherein the first lens group, the aperture diaphragm and the second lens group are sequentially arranged along the incident direction of light; the first lens group comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power and a fourth lens with positive focal power which are arranged in sequence; the second lensgroup comprises a gluing group consisting of a fifth lens with positive focal power and a sixth lens with negative focal power, and a seventh lens with positive focal power, and the gluing group andthe seventh lens are arranged in sequence. The optical lens for road traffic scene monitoring has the advantages of ultra-large field of view, large relative aperture, good imaging quality and high relative illuminance; meanwhile, the structure is reasonable, simple and compact.
Description
technical field [0001] The invention relates to a camera lens for road traffic scenes. Background technique [0002] With the rapid development of the global economy, the scale of road construction continues to increase, and the number of motor vehicles and drivers continues to increase. Traditional traffic management methods will not be able to meet the growing traffic demand. Under this premise, it is particularly important to establish a modern road monitoring system. Important; but the road surveillance camera can be regarded as the "eyes" of the system. At the same time, the optical lens is the core component of the camera, and its imaging quality is an important factor that determines the performance of the camera; therefore, a high-quality road surveillance camera , in addition to the camera body requiring high-quality configuration and software control, a high-resolution optical lens is more important. However, with the continuous development of lens processing and ...
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IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/006G02B13/06G02B13/18
Inventor 曹一青蔡丽晗傅慧梅王富铮
Owner PUTIAN UNIV