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A compact ultra-wide-angle day and night confocal optical lens

An optical lens and ultra-wide-angle technology, applied in the field of optical systems, can solve the problems of not being able to meet consumers' low costs and increase costs, and achieve the effects of reducing resolution, correcting coma, and controlling axial chromatic aberration

Active Publication Date: 2022-07-15
HENAN YIXUAN PHOTOELECTRIC TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The lenses used in this optical system all use glass spherical lenses or glass aspherical lenses, which increases the cost and cannot meet the low-cost needs of consumers

Method used

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  • A compact ultra-wide-angle day and night confocal optical lens
  • A compact ultra-wide-angle day and night confocal optical lens
  • A compact ultra-wide-angle day and night confocal optical lens

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Embodiment Construction

[0026] 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.

[0027] see figure 1 , a compact ultra-wide-angle day and night confocal optical lens composed of 5 glass and plastic lenses.

[0028] The compact ultra-wide-angle day and night confocal optical lens of the present invention comprises a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5 and The photosensitive chip 6, the diaphragm 7 is arranged between the third lens and the fourth lens, the first lens and the fift...

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Abstract

The invention provides a compact ultra-wide-angle day and night confocal optical lens, belonging to the technical field of optical systems, which comprises a first lens, a second lens, a third lens, a fourth lens and a a lens, a fifth lens and a photosensitive chip, a diaphragm is arranged between the third lens and the fourth lens, the first lens and the fifth lens are glass spherical lenses, the second lens, the third lens and the fourth lens The lens is a plastic aspherical lens, and the focal lengths of the first lens, the second lens, the third lens, the fourth lens and the fifth lens are respectively negative, positive, positive, negative and positive. The optical lens of the invention can not only overcome the disadvantages of the optical lens such as the large number of lenses and the unsatisfactory resolution in a large field of view, 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 compact ultra-wide-angle day and night confocal optical lens. Background technique [0002] With the rapid development of science and technology, the use of video surveillance and smart home in people's lives is increasing day by day. In the large field of view optical lens used in surveillance and smart home, although the premise of large field of view is guaranteed, there are more or less large volume, heavy weight, unsatisfactory infrared confocal effect or low resolution, etc. some problems. In order to make the large-field optical lens more in line with the market demand, it is usually focused on improving some deficiencies of the optical lens. Although some ultra-wide-angle and infrared confocal optical lenses are emerging, due to the large number of lenses used in the system, the large-vision lens The resolution off the field is unsatisfactory. At ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/06G02B13/14G02B13/00G02B1/00
CPCG02B13/0045G02B13/0075G02B13/06G02B13/14G02B1/00
Inventor 林合山丁翊轩李梦幻徐南南丁松涛
Owner HENAN YIXUAN PHOTOELECTRIC TECH CO LTD
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