Unlock instant, AI-driven research and patent intelligence for your innovation.

Periscopic lens

A periscope, lens technology, applied in the field of optical systems, can solve problems such as the inability to adapt to the thin and light design of mobile phones, the limitation of periscope lenses, and the impact of lens illumination, achieving the effects of simple assembly, improved imaging quality, and wide application range.

Pending Publication Date: 2020-12-08
辽宁中蓝光电科技有限公司
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in response to market demand, the volume and weight of mobile phones are constantly being reduced. Therefore, the camera lens used on mobile phones has to be improved adaptively.
[0003] As mobile phones become thinner and lighter, the first few lenses in previous periscope lenses are thicker, and the thickness of the lens barrel needs to be increased to adapt to the structural strength of the lens, which affects the size of the periscope and cannot adapt to the thin and light design of mobile phones.
The use of a lens with a small aperture will affect the illumination of the lens, so the use of periscope lenses in mobile phone lenses is subject to certain restrictions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Periscopic lens
  • Periscopic lens
  • Periscopic lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Such as figure 1 As shown, the periscope lens includes in turn from the object side to the image side along the optical axis: a first lens with positive refraction power, the object side and the image side are convex at the paraxial; a negative refraction power, the object side The second lens with positive refraction power, the object side is convex and the image side is concave; the fourth lens has negative refraction power, the object side is convex and the image side is concave. The first lens, the second lens, the third lens and the fourth lens are all made of aspherical plastic lenses, and the diaphragm is arranged between the second lens and the third lens. The incident light passes through each lens surface and filter in sequence, and is finally imaged on the imaging plane.

[0051] The periscope lens satisfies the following conditions:

[0052] 0.15

[0053] 0.1

[0054] -0.9<(R1+R2) / (R1-R2)<-0.5

[0055] F1 / EFL<0.45

[0056] -1≤R...

Embodiment 2

[0082] Such as image 3 As shown, the periscope lens includes in turn from the object side to the image side along the optical axis: a first lens with positive refraction power, the object side and the image side are convex at the paraxial; a negative refraction power, the object side The second lens with positive refraction power, the object side is convex and the image side is concave; the fourth lens has negative refraction power, the object side and the image side are concave. The first lens, the second lens, the third lens and the fourth lens are all made of aspherical plastic lenses, and the diaphragm is arranged between the second lens and the third lens. The incident light passes through each lens surface and filter in sequence, and is finally imaged on the imaging plane.

[0083] For the design parameters of the lens group of this embodiment, please refer to the following table: Table 2 (a) shows the surface type, radius of curvature, thickness and material of each l...

Embodiment 3

[0097] Such as Figure 5 As shown, the periscope lens includes in turn from the object side to the image side along the optical axis: a first lens with positive refraction power, the object side and the image side are convex at the paraxial; a negative refraction power, the object side The second lens with positive refraction power, the object side is convex and the image side is concave; the fourth lens has negative refraction power, the object side and the image side are concave. The first lens, the second lens, the third lens and the fourth lens are all made of aspherical plastic lenses, and the diaphragm is arranged between the second lens and the third lens. The incident light passes through each lens surface and filter in sequence, and is finally imaged on the imaging plane.

[0098] For the design parameters of the lens group of this embodiment, please refer to the following table: Table 3 (a) shows the surface type, radius of curvature, thickness and material of each ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a periscopic lens, which is technically characterized by sequentially comprising a first lens, a second lens, a third lens, and a fourth lens from an object side to an image side along an optical axis, wherein the first lens, with positive refracting function, has the convex object side and image side at the position close to axis; the second lens, with negative refractivepower, has a concave image-side surface; the third lens, with refractive power, has a convex object-side surface; the fourth lens has negative refractive power; the first lens, the second lens, the third lens and the fourth lens are all aspheric plastic lenses, the diaphragm is arranged between the second lens and the third lens, and the lenses on the two sides of the diaphragm have different refraction capacities. The lens satisfies periscopic and long-focus characteristics, has the characteristics of high illumination and clear imaging, realizes lens miniaturization, is matched with a prismin use, and is wide in application range.

Description

technical field [0001] The invention relates to an optical system, in particular to a periscope lens. Background technique [0002] With the development of mobile phone camera technology, the shooting functions of mobile phones are gradually enriched, and optical lenses with different functions such as front-facing small lens, telephoto lens, zoom lens, and wide-angle lens are gradually emerging. However, in response to market demand, the volume and weight of mobile phones are constantly being reduced. Therefore, the camera lenses used on mobile phones have to be improved adaptively. [0003] As mobile phones become thinner and lighter, the first few lenses in the previous periscope lens are thicker, and the lens needs to increase the thickness of the lens barrel to adapt to the structural strength of the lens, which affects the size of the periscope and cannot adapt to the thin and light design of mobile phones. The use of a lens with a small aperture will affect the illum...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G02B13/00G02B13/02G02B13/18G02B1/04
CPCG02B1/041G02B13/004G02B13/02G02B13/18
Inventor 王哲金兑映宋亮
Owner 辽宁中蓝光电科技有限公司