Optical lens and imaging equipment

An optical lens, imaging surface technology, applied in the field of imaging lenses, can solve problems such as large volume

Active Publication Date: 2021-04-20
JIANGXI LIANYI OPTICS CO LTD
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With users' enthusiasm for thinner and lighter terminals, and in pursuit of better imaging effects, this requires optical lenses to meet both miniaturization and wide viewing angles. However, among the existing technologies, none of the optical lenses currently on the market can A better balance between miniaturization and wide viewing angle, resulting in the sacrifice of viewing angle after realizing the miniaturization of the lens, or the defect of larger size after realizing the wide viewing angle of the lens

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

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0067] see figure 1 , is a structural schematic diagram of the optical lens 100 provided in the first embodiment of the present invention, the optical lens 100 includes in sequence from the object side to the imaging surface along the optical axis: a first lens L1, a stop ST, a second lens L2, and a third lens L3, the fourth lens L4 and the filter G1.

[0068] The first lens L1 has negative refractive power, the object side S1 of the first lens is convex, and the image side S2 of the first lens is concave.

[0069] The second lens L2 has positive refractive power, and both the object side S3 and the image side S4 of the second lens are convex.

[0070] The third lens L3 has positive refractive power, and both the object side S5 and the image side S6 of the third lens are convex.

[0071] The fourth lens L4 has negative refractive power, the object side S7 of the fourth lens is convex at the near optical axis and has at least one inflection point, and the image side S8 of the...

no. 2 example

[0084] The structure of the optical lens provided by the second embodiment of the present invention is substantially the same as that of the optical lens 100 provided by the first embodiment, except that the curvature radius and material selection of each lens are different.

[0085] Please refer to Table 3, which shows the relevant parameters of each lens in the optical lens provided by the second embodiment of the present invention.

[0086] table 3

[0087]

[0088] Please refer to Table 4, which shows the surface coefficients of each aspheric surface of the optical lens provided by the second embodiment of the present invention.

[0089] Table 4

[0090]

[0091] Please refer to Figure 5 , Figure 6 and Figure 7 , respectively show the field curvature curve, distortion curve and vertical axis chromatic aberration curve of the optical lens in this embodiment.

[0092] Figure 5 The field curvature curve of represents the degree of curvature of the meridian ima...

no. 3 example

[0096] The structure of the optical lens provided by the third embodiment of the present invention is substantially the same as that of the optical lens 100 provided by the first embodiment, except that the radius of curvature and material selection of each lens are different.

[0097] Please refer to Table 5, which shows the relevant parameters of each lens in the optical lens provided by the third embodiment of the present invention.

[0098] table 5

[0099]

[0100] Please refer to Table 6, which shows the surface coefficients of each aspheric surface of the optical lens provided by the third embodiment of the present invention.

[0101] Table 6

[0102]

[0103] Please refer to Figure 8 , Figure 9 and Figure 10 , respectively show the field curvature curve, distortion curve and vertical axis chromatic aberration curve of the optical lens in this embodiment.

[0104] Figure 8 The field curvature curve of represents the degree of curvature of the meridian im...

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 discloses an optical lens and imaging equipment. The optical lens sequentially comprises a first lens, a diaphragm, a second lens, a third lens and a fourth lens from an object side to an imaging surface along an optical axis. The first lens has negative focal power, the object side surface is a convex surface, and the image side surface is a concave surface; the second lens has positive focal power, and the object side surface and the image side surface of the second lens are convex surfaces; the third lens has positive focal power, and the object side surface and the image side surface of the third lens are convex surfaces; the fourth lens with negative refractive power has an object-side surface being convex in a paraxial region and having at least one inflection point, and an image-side surface being concave in a paraxial region and having at least one inflection point. The four lenses are all plastic aspheric lenses. The optical lens satisfies the conditional expression: 0.5 mm<DM1 / tan(HFOV)<0.7 mm; HFOV represents the maximum half field angle of the optical lens, and DM1 represents the effective half aperture of the first lens. The optical lens at least has the advantages of being small in size, wide in view field and high in pixel.

Description

technical field [0001] The invention relates to the technical field of imaging lenses, in particular to an optical lens and imaging equipment. Background technique [0002] The lens is an important part of the optical imaging system, and it is one of the standard configurations of terminals such as smartphones, tablets, security monitoring equipment, and driving recorders. In recent years, with the continuous development of mobile information technology, the demand for terminals has continued to increase, and the number of lenses mounted on terminals has also increased. [0003] With users' enthusiasm for thinner and lighter terminals, and in pursuit of better imaging effects, this requires optical lenses to meet both miniaturization and wide viewing angles. However, among the existing technologies, none of the optical lenses currently on the market can A good balance between miniaturization and wide viewing angle leads to the sacrifice of the viewing angle after realizing ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/06G02B13/18G02B13/00
Inventor 章彬炜于笑枝曾昊杰刘绪明曾吉勇
Owner JIANGXI LIANYI OPTICS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap