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Optical lens and imaging apparatus

An optical lens and lens technology, which is applied in optics, optical components, instruments, etc., can solve problems such as the impact of resolution, limited installation space, and degradation of lens temperature performance, and achieve high resolution and shorten the optical length.

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

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Problems solved by technology

[0007] Under normal circumstances, in order to meet the needs of miniaturization of optical lenses, the solution of compressing the total optical length of the lens is usually adopted, but the resolution will be significantly affected
At the same time, the imaging quality can also be improved by increasing the use of aspheric lenses, but the cost of glass aspheric lenses is relatively high, and excessive use of plastic aspheric lenses will lead to a decrease in the temperature performance of the lens
[0008] In particular, for cameras that work in outdoor environments such as surveillance cameras or vehicle cameras, 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. On the other hand, its installation space is limited

Method used

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  • Optical lens and imaging apparatus

Examples

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no. 1 example

[0079] Such as figure 1 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 A second surface S2 on the image side; a meniscus-shaped second lens L2 with negative power, with a first surface S3 convex to the object side and a second surface S4 concave to the image side; a double lens with positive power A convex third lens L3 having a first surface S5 convex toward the object side and a second surface S6 convex toward the image side; a stop STO; a fourth lens L4 and a fifth lens L5 cemented to each other, wherein the fourth lens L4 is a biconvex shape with positive refractive power, with a first surface S8 convex to the object side and a second surface S9 convex to the image side, the fifth lens L5 is a meniscus shape with negative refractive powe...

no. 2 example

[0091] Such as figure 2As 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 A second surface S2 on the image side; a biconcave-shaped second lens L2 having a negative refractive power, having a first surface S3 concave toward the object side and a second surface S4 concave toward the image side; a biconcave lens having a positive refractive power A convex third lens L3 having a first surface S5 convex toward the object side and a second surface S6 convex toward the image side; a stop STO; a fourth lens L4 and a fifth lens L5 cemented to each other, wherein the fourth lens L4 is a biconvex shape with positive refractive power, with a first surface S8 convex to the object side and a second surface S9 convex to the image side, the fifth lens L5 is a meniscus ...

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Abstract

The invention provides an optical lens and an imaging apparatus. The optical lens sequentially comprises, 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 provided with negative focal power, and of which the image side surface is a concave surface; a third lens which is a double-convex lens with positive focal power, and of which the object side surface is a convex surface, and the image side surface is a convex surface, wherein the absolute value of the ratio of the radius of the object side surface to the radius of the image side surface is larger than or equal to 18; a fourth lens, a fifth lens glued with the fourth lens; and a sixth lens which is provided with positive focal power. According to the optical lens and the imaging apparatus, high resolution can be obtained while the miniaturization of theoptical lens is retained.

Description

technical field [0001] The invention relates to the field of optical lens and imaging equipment, in particular to the optical lens and imaging equipment capable of obtaining high resolution while keeping the lens miniaturized. 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 development of science and technology, the resolution requirements of optical lenses are getting higher and higher, from the original megapixels to the direction of tens of millions of pixels, and high-pixel lenses are becoming more and more popular. [0004] In addition, with the popularization of mobile devices, more and more small-sized imaging devices need to be applied, for example, imaging devices applied to mobile phones have very high requirements for small sizes. [0005...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/006G02B13/18
Inventor 王东方姚波谢前森
Owner NINGBO SUNNY AUTOMOTIVE OPTECH
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