Optical system, camera module and electronic equipment

A technology of optical system and optical axis, applied in the direction of optics, optical components, instruments, etc.

Pending Publication Date: 2021-05-07
JIANGXI JINGCHAO OPTICAL CO LTD
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide an optical system, a camera modul

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 system, camera module and electronic equipment
  • Optical system, camera module and electronic equipment
  • Optical system, camera module and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0100] refer to figure 1 and figure 2 , in the first embodiment, the optical system 10 includes a stop STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a second lens L2 with positive refractive power along the optical axis 101 from the object side to the image side. The third lens L3 with strong power, the fourth lens L4 with negative refractive power, and the optical path deflection element 110 . The optical path deflection element is a 110-bit right-angle prism. figure 2 It includes the longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system 10 in the first embodiment, wherein the reference wavelength of the astigmatism diagram and distortion diagram is 587nm.

[0101] The object side S1 of the first lens L1 is convex at the paraxial position, and the image side S2 is convex at the paraxial position; the object side S1 is convex at the circumference, and the image...

no. 2 example

[0131] refer to Figure 5 and Figure 6 , in the second embodiment, the optical system 10 includes a stop STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a second lens L2 with positive refractive power from the object side to the image side along the optical axis 101. The third lens L3 with strong power, the fourth lens L4 with negative refractive power, and the optical path deflection element 110 . The optical path deflection element is a 110-bit right-angle prism. Figure 6 It includes the longitudinal spherical aberration diagram, the astigmatism diagram and the distortion diagram of the optical system 10 in the second embodiment, wherein the reference wavelength of the astigmatism diagram and the distortion diagram is 587 nm.

[0132] The object side S1 of the first lens L1 is convex at the paraxial position, and the image side S2 is concave at the paraxial position; the object side S1 is convex at the circumferen...

no. 3 example

[0147] refer to Figure 7 and Figure 8 , in the third embodiment, the optical system 10 includes a stop STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a second lens L2 with positive refractive power from the object side to the image side along the optical axis 101. The third lens L3 with strong power, the fourth lens L4 with negative refractive power, and the optical path deflection element 110 . The optical path deflection element is a 110-bit right-angle prism. Figure 8 The longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system 10 in the third embodiment are included, wherein the reference wavelength of the astigmatism diagram and distortion diagram is 587 nm.

[0148] The object side S1 of the first lens L1 is convex at the paraxial position, and the image side S2 is concave at the paraxial position; the object side S1 is convex at the circumference, and the i...

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

PropertyMeasurementUnit
Effective focal lengthaaaaaaaaaa
Maximum viewing angleaaaaaaaaaa
Optical lengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to an optical system, a camera module and electronic equipment. The optical system sequentially comprises, from an object side to an image side along an optical axis: a first lens element with positive refractive power having a convex object-side surface; a second lens element with refractive power; a third lens element with refractive power; a fourth lens which has refractive power, and the image side surface of the fourth lens is a convex surface; the optical system also satisfies the following relationship: 85.0<43*f/Imgh<122.0, f is the effective focal length of the optical system, and Imgh is the image height corresponding to the maximum field angle of the optical system. The optical system has the characteristic of long focus, so that the optical system has higher magnification, and the telephoto effect is realized. And the optical system has a four-piece structure, so that on one hand, the structure of the system can be simplified, the preparation cost and the preparation difficulty can be reduced, and on the other hand, the structure of the optical system can be compressed to meet the requirement of miniaturization design.

Description

technical field [0001] The invention relates to the technical field of photography and imaging, in particular to an optical system, a camera module and electronic equipment. Background technique [0002] The human eye has extremely high response speed and resolution for imaging limited-distance objects, but it is very difficult to accurately distinguish distant objects. With the development of camera equipment, the optical system with telephoto characteristics has gradually become an important structure for extending the visual distance of the human eye. At present, the optical system often obtains the telephoto effect by means of small aperture and small photosensitive surface, but the problem of poor imaging quality often still occurs. The general solution is to complicate the structure of the optical system, and then correct the system aberration to achieve the effect of improving the image quality, but this design often leads to high manufacturing costs and great manufa...

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): G02B13/00G02B13/18
CPCG02B13/0015G02B13/004G02B13/0065
Inventor 刘彬彬李明邹海荣邹金华党绪文
Owner JIANGXI JINGCHAO OPTICAL 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