Optical imaging system and imaging method thereof

Abstract

The invention relates to an optical imaging system which comprises a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged from left to right along a light incident light path. The first lens is a negative meniscus lens, the second lens is a negative meniscus lens, the third lens is a biconvex positive lens, the fourth lens is a negative meniscus lens, the fifth lens is a biconvex positive lens, the sixth lens is a biconvex positive lens, and the seventh lens is a negative meniscus lens. All the lenses are made of glass materials. The structure is reasonable, the full-glass structural design is adopted, and compared with a large number of glass-plastic or full-plastic systems in the current market, the optical stability is better. Meanwhile, the visual field of the system is large, and dead-corner-free monitoring of the environment outside the vehicle can be achieved. In order to adapt to different light environments, the design of a small F number and a wide working wave band is adopted. In addition, the temperature drift performance is good in the temperature environment of-40 DEG C to 105 DEG C, and the optical and structural stability is further improved.

Description

technical field [0001] The invention relates to an optical imaging system and an imaging method thereof. Background technique [0002] By identifying, detecting, and tracking the external environment, the ADAS system can effectively help drivers avoid traffic safety risks and improve driving quality. With the rapid development of optics, sensors and information technology, the ADAS system has developed from the initial passive alarm to active intervention. Among them, the development of optical lenses has played an important role. The emergence of ultra-wide-angle and high-quality lenses has greatly improved the effective field of view and performance of ADAS systems. Some automakers have even begun to try to develop ADAS-based driverless cars. However, the news that some well-known manufacturers caused traffic accidents due to the failure of the driver assistance system has aroused widespread concern and concern in the society, and one of the major points of controversy is...

AI Technical Summary

Problems solved by technology

However, the news that some well-known manufacturers caused traffic accidents due to the failure of the driver assistance system has aroused widespread concern and concern in the society, and one of the major points of controversy is whether ADAS can realize all-weather and stable external environment recognition and monitoring.

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