A telephoto ultra-high-definition day and night confocal optical system
A confocal optical system and high dispersion technology, applied in the field of optical systems, can solve the problems of further improvement in resolution, low resolution, heavy weight, etc., and achieve the effects of improving system resolution reduction, reducing sensitivity, and correcting field curvature
Active Publication Date: 2022-07-15
HENAN YIXUAN PHOTOELECTRIC TECH CO LTD
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Problems solved by technology
The defect of this telephoto lens: it uses 8 lenses, it is bulky, the cost is high, and the resolution needs to be further improved, which can no longer meet the current needs
However, the lens has the disadvantages of low resolution, high distortion, heavy weight, and high cost.
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[0032] In order to better understand the present invention, the content of the present invention is further described below in conjunction with the embodiments, but the protection content of the present invention is not limited to the following embodiments. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details.
[0033] see figure 1 , a telephoto ultra-high-definition day and night confocal optical system, which is composed of 6 pieces of glass and plastic lenses, including a first lens 1, a second lens 2, and a third lens arranged in sequence from the object plane to the image plane along the optical axis. 3. The fourth lens 4 , the fifth lens 5 , the sixth lens 6 and the photosensitive chip 7 , and a diaphragm 8 is arranged between the second lens 2...
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The invention provides a telephoto ultra-high-definition day and night confocal optical system, belonging to the technical field of optical systems, comprising a first lens, a second lens, a third lens, a fourth lens and a A lens, a fifth lens, a sixth lens and a photosensitive chip, a diaphragm is set between the second lens and the third lens, and the first lens, the second lens, the fourth lens, the fifth lens and the sixth lens are Glass spherical lens, the third lens is a plastic aspheric lens, and the focal lengths of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are negative, positive, negative, Positive, positive, negative. The optical system of the invention can not only overcome the shortcomings of the optical system such as the large number of lenses and the unsatisfactory resolution under telephoto, but also can reduce the size of the lens and reduce the production cost at the same time.
Description
technical field [0001] The invention belongs to the technical field of optical systems, and in particular relates to a telephoto ultra-high-definition day and night confocal optical system. Background technique [0002] With the rapid development of technology and the emergence of high-sensitivity chips, the original video surveillance can no longer meet people's expectations, and long-distance high-definition surveillance has become the darling of the new generation. In the telephoto lens used in monitoring, although the premise of telephoto is guaranteed, there are more or less problems such as large size, heavy weight, unsatisfactory infrared confocal effect or low resolution. In order to make the telephoto optical lens more in line with the market demand, it is usually focused on improving some deficiencies of the optical lens. Although some telephoto and infrared confocal optical lenses are emerging, due to the large number of lenses used in the system, the telephoto le...
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IPC IPC(8): G02B13/00G02B13/14G02B13/18
CPCG02B13/0045G02B13/008G02B13/14G02B13/18
Inventor 林合山丁翊轩李梦幻徐南南丁松涛
Owner HENAN YIXUAN PHOTOELECTRIC TECH CO LTD