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Optical lens and imaging apparatus

An optical lens and lens technology, applied in optics, optical components, instruments, etc., can solve the problem of limited installation space, and achieve the effect of reducing the radial volume, reducing the diameter of the front end, and reducing the overall volume

Active Publication Date: 2018-10-16
NINGBO SUNNY AUTOMOTIVE OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Moreover, for lenses such as vehicle lenses that work in outdoor environments, on the one hand, the working environment is changeable, and it is necessary to maintain perfect resolution no matter whether it is hot or cold, rainy or snowy, and on the other hand, Its installation space is limited

Method used

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  • Optical lens and imaging apparatus
  • Optical lens and imaging apparatus
  • Optical lens and imaging apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0105] Such as figure 2 As shown, the optical lens according to the first embodiment of the present invention includes in sequence from the object side to the image side: a meniscus-shaped first lens L1 with negative refractive power, a first surface S1 convex to the object side and a concave first surface S1 The second surface S2 on the image side has a shape close to a concentric circle; the meniscus-shaped second lens L2 with negative power has a first surface S3 convex to the object side and a second surface concave to the image side S4, and the edge of its first surface S3 has an inflection point; a biconvex third lens L3 with positive refractive power has a first surface S5 convex to the object side and a second surface S6 convex to the image side; stop STO; a fourth lens L4 and a fifth lens L5 cemented to each other, wherein the fourth lens L4 is a biconcave shape with negative power, having a first surface S8 concave to the object side and a second surface S8 concave ...

no. 2 example

[0118] Such as image 3 As shown, the optical lens according to the second embodiment of the present invention includes in sequence from the object side to the image side: a meniscus-shaped first lens L1 with negative power, a first surface S1 convex to the object side and a concave first surface S1 The second surface S2 on the image side has a shape close to a concentric circle; the meniscus-shaped second lens L2 with negative power has a first surface S3 convex to the object side and a second surface concave to the image side S4, and the edge of its first surface S3 has an inflection point; a biconvex third lens L3 with positive refractive power has a first surface S5 convex to the object side and a second surface S6 convex to the image side; stop STO; a fourth lens L4 and a fifth lens L5 cemented to each other, wherein the fourth lens L4 is a biconcave shape with negative power, having a first surface S8 concave to the object side and a second surface S8 concave to the imag...

no. 3 example

[0132] Such as Figure 4 As shown, the optical lens according to the third embodiment of the present invention includes in sequence from the object side to the image side: a meniscus-shaped first lens L1 with negative power, a first surface S1 convex to the object side and a concave first surface S1 The second surface S2 on the image side has a shape close to a concentric circle; the meniscus-shaped second lens L2 with negative power has a first surface S3 convex to the object side and a second surface concave to the image side S4, and the edge of its first surface S3 has an inflection point; a biconvex third lens L3 with positive refractive power has a first surface S5 convex to the object side and a second surface S6 convex to the image side; stop STO; a fourth lens L4 and a fifth lens L5 cemented to each other, wherein the fourth lens L4 is a biconcave shape with negative power, having a first surface S8 concave to the object side and a second surface S8 concave to the imag...

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PUM

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Abstract

The invention provides an optical lens and an imaging apparatus. The optical lens comprises, sequentially from an object side to an image side, a first lens which is a crescent lens with negative focal power and of which the object side surface is a convex surface, and the image side surface is a concave surface; a second lens which is a crescent lens with negative focal power and of which the object side surface is a convex surface, and the image side surface is a concave surface, wherein the second lens is an aspheric lens, and an inflection point exists at the edge of the object side surface; a third lens with positive focal power, a fourth lens with negative focal power; a fifth lens glued with the fourth lens and having positive focal power; and a sixth lens with positive focal power.

Description

technical field [0001] The present invention relates to the fields of optical lenses and imaging devices. Background technique [0002] Imaging devices such as camera-mounted mobile devices and digital still cameras using, for example, charge-coupled devices (CCD) and complementary metal-oxide semiconductors (CMOS) as solid-state imaging elements are well known. [0003] With the continuous development of automotive safety technology, such as assisted driving technology, more and more cars are equipped with on-board cameras. At present, conventional vehicle-mounted lenses have different functions due to different installation positions. For example, the front-view lens needs to observe distant objects (long focal length), while the rear-view / side-view lens needs to observe the environmental conditions in a wide range of angles around the vehicle. (Large field of view, wide angle). [0004] Existing forward-looking lenses are generally used to detect long-distance and azimu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B13/06
CPCG02B13/0045G02B13/06
Inventor 王东方姚波谢前森
Owner NINGBO SUNNY AUTOMOTIVE OPTECH
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