Ultra-wide-angle fisheye optical imaging lens
An optical imaging lens and ultra-wide-angle fisheye technology, applied in the field of optical lenses, can solve the problems of inability to monitor the scene in real time, large rotation range, and inadequate monitoring, etc., to achieve reduced structural tolerance sensitivity, large aperture, and reduced distortion Effect
Active Publication Date: 2016-01-27
UNION OPTECH
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Problems solved by technology
[0002] In the existing monitoring lens, its field of view is generally less than 140°. In order to meet all-round monitoring, it is necessary to rotate the monitoring lens accordingly, and the rotation range is relatively large, otherwise it is impossible to conduct real-time and comprehensive monitoring of the scene in the larger field of view
Therefore, it is easy to produce dead angles, resulting in inadequate monitoring
Method used
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Embodiment Construction
[0032] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0033] An ultra-wide-angle fisheye optical imaging lens of the present invention, such as figure 1 with figure 2 As shown, a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a filter 6 and a photosensitive sheet 7 are arranged in sequence from the object side 9 to the image plane, and the second A diaphragm 8 is arranged between the lens 2 and the third lens 3, the first lens 1 is a glass spherical lens, the second lens 2, the third lens 3, the fourth lens 4 and the fifth lens 5 are plastic non- The spherical lens adopts the combination of glass spherical lens and plastic aspheric lens, which effectively improves the geometric transfer function of the lens, and significantly improves the tax rate, transmittance and color reproduction of the lens product.
[0034] The first lens 1, the second lens 2, and the fourth lens...
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The invention discloses an ultra-wide-angle fisheye optical imaging lens, which comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens. Each of the lenses and the parameters thereof are optimized, the curvature radius of one side, facing to the object side, of the first lens is greater than 10, and the curvature radius of the other side, facing to the image surface, of the first lens is less than 5, and then the high image quality and the wide aperture imaging in more than 220 degrees of the field range is realized, the ultra-wide-angle fisheye optical imaging lens provided by the invention can be used for meeting ultra-wide-angle imaging requirements in vehicle and all-round monitoring, and the rotating range of the lens is reduced, so as to avoid the condition of incomplete monitoring caused by monitoring blind angles.
Description
【Technical field】 [0001] The invention relates to an optical lens, in particular to an ultra-wide-angle fisheye optical imaging lens. 【Background technique】 [0002] In the existing monitoring lens, its field of view is generally less than 140°. In order to meet all-round monitoring, it is necessary to rotate the monitoring lens accordingly, and the rotation range is relatively large, otherwise it is impossible to conduct real-time and comprehensive monitoring of the scene in the larger field of view . Therefore, it is easy to produce dead angles, resulting in inadequate monitoring. [0003] The present invention just proposes based on the shortcoming that the above-mentioned prior art exists. 【Content of invention】 [0004] The technical problem to be solved by the present invention is to provide an ultra-wide-angle fisheye optical imaging lens, including a first lens, a second lens, a third lens, a fourth lens and a fifth lens, by optimizing each lens and the parameter...
Claims
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Login to View More IPC IPC(8): G02B13/06G02B13/18G02B13/00
CPCG02B13/0045G02B13/06G02B13/18
Inventor 鲍秀娟江依达潘峰
Owner UNION OPTECH