A method of designing a lens

A design method and lens technology, applied in optical components, instruments, optics, etc., can solve the problems of difficult imaging of lenses, deformation of abutting lenses, large deformation of plastic lenses, etc., to increase imaging quality, reduce difficult imaging, and reduce deformation effect

Active Publication Date: 2022-07-05
JIAXING ZHONGRUN OPTICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the plastic lens in the wave-plastic hybrid lens designed and produced in the market has the problem of temperature drift at high temperature, which is mainly manifested in the large deformation or even irreversible deformation of the plastic lens at high temperature, which leads to the failure of the entire lens system to image normally, which leads to production failure. fail
[0003] This problem is mainly caused by the Image 6 As shown, the abutment lens is directly assembled into the lens barrel, and it is usually subjected to axial force along the optical axis and radial force. The former mainly comes from the locking force of the pressure ring, the pressure of expansion or contraction in the front and rear directions, and the latter mainly comes from the temperature. After the change, the pressure of the outer diameter of the abutment lens and the lens barrel, and the abutment lens itself is asymmetrical both in the radial direction and in the axial direction, resulting in a large deformation of the abutment lens, making it difficult for the lens to image, reducing the Image quality of the lens

Method used

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  • A method of designing a lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] like figure 1 , Figure 7 and Figure 8 As shown, a method for designing a lens includes the following steps:

[0095] S11, analyze and obtain the sensitive surface of the lens.

[0096] First, calculate the curved surfaces on both sides of the lens, which of the two curved surfaces is more sensitive, and use the more sensitive curved surface as the sensitive surface.

[0097] S21. Set the first maximum deformation amount of the sensitive surface according to preset parameters.

[0098] According to the installation of the first lens L1 to the sixth lens L6 in the lens barrel 1, the focal length, refractive power, image height, aberration and other related parameters of the lens are used as preset parameters to limit the deformation amount of the lens, and then The first maximum deformation amount of the sensitive surface is formed. Therefore, when the deformation amount of the sensitive surface is less than or equal to the first maximum deformation amount, the len...

Embodiment 2

[0103] like figure 1 , figure 2 and Figure 8 As shown, a method for designing a lens includes the following steps:

[0104] S101 , when the lens is not provided with an abutment platform, set the lens in the lens barrel 1 .

[0105] In the current state, the lens is directly arranged in the lens barrel 1, and the lens will deform after abnormal temperature.

[0106] S102. Set the lens barrel 1 provided with the lens in a preset environment, and obtain the deformation amount of the curved surfaces on both sides of the lens.

[0107] The preset environment can be changed according to the user's settings. Specifically, the preset environment mainly refers to different temperature environments. After a period of time, the lens can be deformed, and the user can measure the deformation amount on both sides of the lens.

[0108] S103. Use the curved surface with a larger deformation amount as the sensitive surface of the lens, and use the curved surface with a smaller deformat...

Embodiment 3

[0120] like image 3 , Figure 7 and Figure 8 As shown, a method for designing a lens includes the following steps:

[0121] S11, analyze and obtain the sensitive surface of the lens.

[0122] S21. Set the first maximum deformation amount of the sensitive surface according to preset parameters.

[0123] S31, arbitrarily select a point on the outer wall of the lens as the first feature point.

[0124] S32, disposing the abutting table on the lens, and making the first feature point fall into the center plane of the abutting table;

[0125] S33. Set the lens provided with the abutting table in the lens barrel 1, and acquire the current deformation amount of the sensitive surface.

[0126] After the abutment table is set on the first feature point, the abutment table is located at one end close to the sensitive surface, and in the current state, the lens is set in the lens barrel 1 again, and the current deformation of the sensitive surface is obtained. The deformation amo...

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Abstract

The invention relates to the field of optical devices, in particular to a method for designing a lens, comprising the following steps: S11, analyzing and obtaining a sensitive surface of the lens; S21, setting a first maximum deformation variable of the sensitive surface according to preset parameters; S3, according to The first maximum deformation amount of the sensitive surface is analyzed to obtain the first position interval of the lens abutting on the central surface of the stage. Through the arrangement of the above steps, the pressure in the radial direction of the lens is reduced, thereby reducing the possibility of deformation, reducing the possibility that the lens is difficult to image, and increasing the imaging quality of the lens.

Description

technical field [0001] The invention relates to the field of optical devices, in particular to a design method of a lens. Background technique [0002] At present, the plastic lenses in the wave-plastic hybrid lenses designed and produced in the market have the problem of temperature drift at high temperature, which is mainly manifested in the large deformation or even irreversible deformation of the plastic lens at high temperature, which causes the entire lens system to fail to image normally, resulting in production fail. [0003] This problem is mainly caused by the Image 6 As shown in the figure, the abutting lens is directly assembled into the lens barrel, and is usually subjected to axial force and radial force along the optical axis. The former mainly comes from the locking force of the pressure ring and the pressure of expansion or contraction in the front and rear directions, and the latter mainly comes from the temperature. After the change, the pressure of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/00
CPCG02B27/0012
Inventor 何宇向诗文罗积来傅玉宏陈三忠
Owner JIAXING ZHONGRUN OPTICAL TECH
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