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Optical lens and imaging equipment

An optical lens and lens technology, which is applied in the field of optical lenses, can solve the problems of unsatisfactory zoom lens imaging effects, etc., and achieve the effects of improving camera experience, shortening axial length, and effectively utilizing space

Active Publication Date: 2021-11-30
常州联益光学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the size of the optical lens module, the imaging effect of most zoom lenses nowadays is not ideal.

Method used

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  • Optical lens and imaging equipment
  • Optical lens and imaging equipment
  • Optical lens and imaging equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0043] As an implementation, the optical lens satisfies the following conditional formula:

[0044] 1.5

[0045] Wherein, AC34 represents the air gap distance between the third lens and the fourth lens on the optical axis, and CT4 represents the lens thickness of the fourth lens on the optical axis.

[0046] When the conditional formula (1) is satisfied, when 1.5

no. 1 example

[0092] Please refer to figure 1 , which is a schematic structural view of the optical lens 100 provided by the first embodiment of the present invention, the optical lens 100 includes in sequence from the object side to the image side along the optical axis: a prism L5 with a reflective surface, a stop ST, a first lens L1, the second lens L2, the third lens L3, the fourth lens L4 and the filter G1.

[0093] Wherein, the prism L5 can be a right-angle prism or other type of prism to realize light deflection and enter the first lens L1;

[0094] The diaphragm ST is set in front of the first lens L1 to reduce stray light;

[0095] The first lens L1 is a plastic aspheric lens with positive refractive power, the object side S1 of the first lens is convex, and the image side S2 of the first lens is convex;

[0096] The second lens L2 is a plastic aspheric lens with negative refractive power, the object side S3 of the second lens is concave, and the image side S4 of the second lens...

no. 2 example

[0106] For the structural schematic diagram of the optical lens 200 provided in this embodiment, please refer to Image 6 Compared with the optical lens 100 in the first embodiment, the structure of the optical lens 200 in this embodiment has little change, and the biggest change is the distance from the second lens to the third lens.

[0107] Specifically, the optical lens 200 sequentially includes: a prism L5 with a reflective surface, a stop ST, a first lens L1, a second lens L2, a third lens L3, and a fourth lens L4 from the object side to the image side along the optical axis direction. and filter G1.

[0108] Wherein, the prism L5 can be a right-angle prism or other type of prism to realize light deflection and enter the first lens L1;

[0109] The diaphragm ST is set in front of the first lens L1 to reduce stray light;

[0110] The first lens L1 is a plastic aspheric lens with positive refractive power, the object side S1 of the first lens is convex, and the image side ...

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PUM

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Abstract

The present invention provides an optical lens and an imaging device. The optical lens includes: a prism, a diaphragm, a first lens, a second lens, a third lens and a fourth lens in order from the object side to the image side along the optical axis; The lens has positive refractive power, and its object side and image side are both convex; the second lens has negative refractive power, and the third lens and the fourth lens all have positive refractive power; the first lens, the second lens, the third lens and The fourth lens is an aspherical lens; the optical lens satisfies the relation 1.5

Description

technical field [0001] The present invention relates to the technical field of optical lenses, and more particularly, to an optical lens and an imaging device. Background technique [0002] At present, with the rapid development of portable electronic products, it has brought great convenience to people's daily life; at the same time, with the wide application of optical lenses, it is now possible to have an distance viewing effect. Such as remote conferences, webcasts, security monitoring, video calls, vehicle images, etc., all capture pictures through optical lenses, and convert the pictures into electrical signals through conversion equipment. However, with the continuous development of design level and manufacturing technology, people's demand for photography is more and more extensive, and the demand for smaller and higher-performance optical lenses is becoming more and more urgent. [0003] In the existing technology, with the continuous update and development of mob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/02G02B13/18G03B30/00
CPCG02B13/004G02B13/18G02B13/02G03B30/00
Inventor 章彬炜熊儒韬曾昊杰
Owner 常州联益光学有限公司
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