Optical lens

An optical lens and lens technology, applied in the field of optical lens, to achieve the effects of small distortion, high light-passing performance, and aberration correction

Active Publication Date: 2015-03-11
NINGBO SUNNY AUTOMOTIVE OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the wide-angle indoor monitoring and vehicle camera lenses on the market cannot realize the mi

Method used

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Examples

Experimental program
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Example Embodiment

[0049] Example 1:

[0050] figure 1 It is a schematic structural diagram of an optical lens provided by a specific embodiment of the present invention. like figure 1 As shown, an optical lens according to the present invention, from the object side to the image side, includes: a front lens group with positive refractive power, a diaphragm element L7, a rear lens group with positive refractive power, a color filter L8, and the imaging surface L9;

[0051] Wherein, the front lens group sequentially includes from the object side to the image side: a first lens L1 and a second lens L2, the first lens L1 is a crescent-shaped lens with negative refractive power and a concave surface facing the image side, so The second lens L2 is a biconvex lens with positive refractive power; the rear lens group sequentially includes a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6 from the object side to the image side. The third lens L3 is a biconcave lens with negative ...

Example Embodiment

[0087] Embodiment 2: It should be noted that the difference between this embodiment and Embodiment 1 is that the structures of the cemented lenses in the rear lens group in this embodiment are different.

[0088] Figure 5 It is a schematic structural diagram of another optical lens provided by the specific embodiment of the present invention. like Figure 5 As shown, an optical lens according to the present invention, from the object side to the image side, includes: a front lens group with positive refractive power, a diaphragm element L7, a rear lens group with positive refractive power, a color filter L8, and the imaging surface L9;

[0089] Wherein, the front lens group includes in order from the object side to the image side: a first lens L1 and a second lens L2, the first lens L1 is a crescent-shaped lens with negative refractive power and a concave surface facing the image side, so The second lens L2 is a biconvex lens with positive refractive power; the rear lens g...

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Abstract

The invention relates to an optimal lens. The optical lens sequentially comprises a front lens group, a diaphragm element and a rear lens group from an object space to an image space, wherein the front lens group has positive focal power; the rear lens group has positive focal power; the front lens group sequentially comprises a crescent first lens and a double-convex second lens from the object space to the image space; the crescent first lens has negative focal power; a concave surface of the crescent first lens faces the image space; the double-convex second lens has positive focal power; the rear lens group sequentially comprises a double-concave third lens, a crescent fourth lens and a balsaming lens; the double-concave third lens has negative focal power; the crescent fourth lens has positive focal power; a concave surface of the crescent fourth lens faces the object space; the balsaming lens consists of a fifth lens and the sixth lens. The requirements of high pixel, small distortion, large aperture, high light transmitting performance and accordance with high definition are met under the conditions of low cost and small miniaturization are realized; various aberrations of an optical system are effectively corrected; meanwhile, perfect imaging definition can be kept in the temperature of -40DEGC to 85DEG C; the optical lens is specially suitable for monitoring or vehicle-mounted camera systems considering daytime and nighttime or poor illuminating conditions.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to an optical lens. Background technique [0002] With the development of active safety in the automotive industry, the requirements for vehicle front-view cameras continue to increase. In particular, the limitation of camera assembly space makes the trend of lens miniaturization increasingly obvious. Under the premise of keeping lens distortion small, megapixels, and large aperture, the total length of the lens should be as short as possible. At the same time, it has low cost and can maintain perfect imaging clarity in the temperature range of -40°C to +85°C. [0003] The wide-angle indoor monitoring and vehicle camera lenses currently on the market cannot realize the miniaturization of the lens under the premise of low cost, high pixel, small distortion, and large aperture imaging. Contents of the invention [0004] The purpose of the present invention is to propose a...

Claims

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Application Information

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IPC IPC(8): G02B13/00
CPCG02B13/006G02B27/0025
Inventor 汪燕青谢前森姚波
Owner NINGBO SUNNY AUTOMOTIVE OPTECH
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