Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Lens chromatic aberration elimination method

A chromatic aberration, lens technology, applied in optics, instruments, nonlinear optics, etc., to achieve simple effects

Active Publication Date: 2019-01-04
HUBEI UNIV OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a lens chromatic aberration elimination method, which solves the flexibility problem of the imaging system, and has the characteristics of simple and easy implementation

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
  • Lens chromatic aberration elimination method
  • Lens chromatic aberration elimination method
  • Lens chromatic aberration elimination method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0128] Combine below Figure 1 to Figure 4 Introduce the embodiment of the present invention, specifically comprise the following steps:

[0129] Step 1: Set the wavelength ranges of the first color light, the second color light, and the third color light, and calculate the outermost radius of the achromatic lens according to the focal length of the achromatic lens and the image surface size of the liquid crystal spatial light modulator and the number of bands in the achromat;

[0130] As a preference, the range of the wavelength of the first color light described in step 1 is:

[0131] lambda R ∈[λ R,L ,λ R,H ]

[0132] Among them, λ R,L =622nmλ R,L is the minimum value of the wavelength of the first color light, λ R,H =760nmλ R,H is the maximum value of the wavelength of the first color light;

[0133] The range of the second color light wavelength described in step 1 is:

[0134] lambda G ∈[λ G,L ,λ G,H ]

[0135] Among them, λ G,L =492nm is the minimum valu...

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 a lens chromatic aberration elimination method. The method controls a phase modulation amount of a liquid crystal spatial light modulator by a gray value mapping driving voltage on the basis of a programmable control characteristic of the phase-only liquid crystal spatial light modulator. According to a scalar diffraction theory, an odd waveband of a three wavelength-modulated Fresnel lens is applied with 2pi phase, and an even waveband is applied with pi phase so as to realize a three-color optical multiplexing lens having a common focal length and eliminate chromaticaberration. The achromatic aberration of any color light can be realized by using the method of the invention.

Description

technical field [0001] The invention belongs to the field of optical imaging, in particular to a method for eliminating lens chromatic aberration. Background technique [0002] The image quality of the optical system is very sensitive to the change of the wavelength. The traditional achromatic method achieves the purpose of system achromatic by selecting two or more optical materials with different refractive index and dispersion and optimizing the lens parameters. With the development of binary optical processing technology, by adding a diffractive surface, one material can be used to correct the chromatic aberration of the imaging system without introducing other additional aberrations, effectively reducing the volume and weight of the system. However, this method has high requirements for the etching precision and processing quality of the diffraction surface. Moreover, these methods lack flexibility, and once the lens parameters are determined, they are unique and irrep...

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): G02B27/00G02F1/13G02F1/133
CPCG02B27/0012G02F1/1313G02F1/13306
Inventor 许忠保刘爽李春桥陈威叶薇薇
Owner HUBEI UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com