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

Ant colony optimization method for correcting single aspheric lens spherical aberrations

A technology of aspheric lens and optimization method, which is applied in the direction of optical components, optics, instruments, etc., to achieve the effect of less parameters, high degree of intelligence, and easy understanding

Inactive Publication Date: 2018-03-09
SHANDONG UNIV OF TECH
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Modern optimization algorithms can not only overcome the limitation of initial conditions required by traditional optimization algorithms, but also perform global optimization, but it is easy to fall into local optimal solutions.

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
  • Ant colony optimization method for correcting single aspheric lens spherical aberrations
  • Ant colony optimization method for correcting single aspheric lens spherical aberrations
  • Ant colony optimization method for correcting single aspheric lens spherical aberrations

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Example 1: See figure 1 with figure 2 , taking the front surface (incident surface) of the lens as an aspheric surface and the rear surface (exit surface) as a plane as an example, the optical characteristic parameters are as follows: object distance l =∞; entrance pupil diameter D max =120 (the maximum incident height on the pupil h max = 60); entrance pupil l z =0, the refractive index n of the lens material D =1.5688 (D light refractive index), Table 1 lists the target values ​​and tolerances of the focal length and spherical aberration of a single aspheric lens. All units of length in this patent are mm.

[0052]

[0053] According to the above requirements, the specific implementation process of this method patent is as follows

[0054] Step 1 of the i The position vector of an ant is composed as follows:

[0055] Aspheric parameters of the front surface of the lens C.a 2 、a 4 , a 6 , a 8 , a 10 , a 12 、 and the sequence of the distan...

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 ant colony optimization method for correcting single aspheric surface lens spherical aberrations. The sequential arrangement of parameters C, a<2>, a<4>, a<6>, a<8>, a<10> and a<12>, <d> which determine the shape of a single aspheric lens constitute a position vector of an ant, each component of the position vector has the value range, and the initial position is a uniform random number in the value range of each component; according to the position vector of the ant, the vertical axis spherical aberrations and the actual focal lengths at six incidence heights are calculated, the sum of the weight of the squares of the six vertical axis spherical aberrations and the weight of the squares of the difference of the actual focal length and the target focal length constitutes an evaluation function of the single aspheric lens, and the ant initial information amount is the evaluation function of the ant initial position; a single aspheric lens structural parameteris used as the optimization amount in an ant colony algorithm to conduct a minimum value optimization operation on evaluation function values to obtain values of C, a<2>, a<4>, a<6>, a<8>, a<10> and a<12>, <d>, and the group of values is the single aspheric lens structural parameter to be looked for.

Description

technical field [0001] The invention relates to a spherical aberration correction method, in particular to a single aspheric lens spherical aberration correction method using ant colony algorithm. Background technique [0002] A single spherical surface cannot correct spherical aberration, nor can a single spherical lens correct spherical aberration, but a single aspherical surface can correct spherical aberration. The most popular method for correcting spherical aberration is the damped least squares method, which is widely used in most optical design software. When using an aspheric surface to correct spherical aberration, the coefficients of the higher-order terms of the aspheric surface equation can be used as structural variables of the optical system to participate in correction optimization together with other structural variables of the system. However, the result of this is that the structural variables of the optical system increase rapidly, the aberration linear ...

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): G02B27/00
CPCG02B27/0012
Inventor 秦华庞鑫杨开刘珍谷健飞满忠胜韩克祯
Owner SHANDONG UNIV OF TECH