Optical lens

An optical lens and lens technology, which is applied in the field of optical lens, can solve the problem that the image capture device is difficult to achieve stable image quality and super wide angle, and can not be overcome, so as to achieve the effect of low distortion, large aperture, and small volume

Active Publication Date: 2020-03-10
ABILITY ENTERPRISE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the camera quality of the image capture device cannot overcome the problems of smaller viewing angle and reduced resolution due to changes in the refra

Method used

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  • Optical lens
  • Optical lens
  • Optical lens

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Example Embodiment

[0019] Hereinafter, various embodiments of the present invention will be disclosed with the accompanying drawings. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the invention, these practical details are unnecessary. In addition, for the purpose of simplifying the drawings, some well-known and conventional structures and elements are shown in a simplified and schematic manner in the drawings. Also, unless otherwise indicated, the same reference numerals in different drawings may be regarded as corresponding elements. The drawings in these drawings are for the purpose of clearly expressing the connection relationship between the various elements in these embodiments, and do not depict the actual size of the various elements.

[0020] figure 1 A cross-sectional view of an optical le...

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Abstract

The invention discloses an optical lens, which comprises a first lens having negative refractive power, a second lens having negative refractive power, a third lens having positive refractive power, afourth lens having positive refractive power, a fifth lens having negative refractive power, a sixth lens having positive refractive power, a seventh lens having positive refractive power, and an eighth lens having negative refractive power from the object side to the image side, wherein the curvature radius of the object side surface of the first lens is greater than that of the image side surface; the effective radius of the image side surface of the eighth lens is r and has an inflection point, the distance between the inflection point and the optical axis is H, the image side surface of the eighth lens intersects with the optical axis at an intersection point, and the distance between the mapping position of the inflection point mapped to the optical axis and the intersection point isd, the absolute value of r/d is less than or equal to 30, or the absolute value of r/H is less than or equal to 2. The optical lens provided by the invention has the characteristics of low distortion, large aperture, large field angle and small size.

Description

technical field [0001] The invention discloses an optical lens, and in particular relates to an optical lens with low distortion, large aperture, large viewing angle and small volume. Background technique [0002] In recent years, due to the rise of random photography activities in sports, the demand for thin, light and short optical lenses has greatly increased, and it has also brought about a trend of small high-quality image capture devices. This type of device is mainly used in real-time outdoor activities. For image shooting, the lens suitable for this type of device needs to have the characteristics of small overall length and ultra-wide angle. [0003] The image capturing devices generally used in normal environments have low flexibility to adjust camera parameters according to the environment. For example, the camera quality of the image capture device cannot overcome the problems of narrowing viewing angle and lower resolution due to changes in the refractive index...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0045G02B13/18G02B13/06
Inventor 陈嘉鸿
Owner ABILITY ENTERPRISE CO LTD
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