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

Low-distortion lens

A lens and lens technology, applied in the field of low-distortion lenses, can solve problems such as large distortion, small aperture, and insufficient resolution of the peripheral field of view, and achieve low distortion, good imaging effect, and small size

Active Publication Date: 2018-07-24
FOSHAN HUAGUO OPTICAL
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most short-focus industrial lenses currently on the market have shortcomings such as small aperture, large distortion, and insufficient resolution of the peripheral field of view, which can no longer meet the needs of the current market.

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
  • Low-distortion lens
  • Low-distortion lens
  • Low-distortion lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] refer to figure 1 , the present invention provides a low-distortion lens, which sequentially includes a first lens group G1, an iris diaphragm 100, and a second lens group G2 along the light incident direction, and the first lens group G1 and the second lens group G2 both have Positive optical power, and can move along the optical axis;

[0041] The first lens group G1 includes a negative lens group G11 and a positive lens group G12, and the first lens group G1 and the second lens group G2 satisfy the following relationship:

[0042] 3

[0043] Wherein, f1 represents the focal length value of the first lens group G1, f2 represents the focal length value of the second lens group G2, and f11 represents the focal length value of the negative lens group G11 of the first lens group G1.

[0044] After being defined by the relational expression "3

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 low-distortion lens comprising a first lens group, a variable diaphragm and a second lens group which are arranged in turn along the light incident direction. The first lensgroup and the second lens group have positive focal power and can move along the light axis. The first lens group comprises a negative lens piece group and a positive lens piece group, and the first lens group and the second lens group meet the following relationship: 3<f1 / f2<5; -0.3<f11 / f1<-0.1, wherein f1 represents the focal length value of the first lens group, f2 represents the focal length value of the second lens group, and f11 represents the focal length value of the negative lens piece group of the first lens group. According to the low-distortion lens, short focal length and large aperture can be realized, and the size is small so that low distortion can be realized, the imaging effect is great and the low-distortion lens can be widely applied to the optical lens industry.

Description

technical field [0001] The invention relates to the field of optical devices, in particular to a low-distortion lens. Background technique [0002] With the development of the field of machine vision, the short focal length wide-angle lens has gradually developed into the main equipment used in the field of machine vision, and its market share is gradually increasing every year. In the field of machine vision, the requirements for short focal length and wide-angle lenses are mainly small size, low distortion, and clear field of view. However, most short-focus industrial lenses currently on the market have shortcomings such as small aperture, large distortion, and insufficient resolution of the peripheral field of view, which can no longer meet the needs of the current market. Contents of the invention [0003] In order to solve the above technical problems, the object of the present invention is to provide a low distortion lens. [0004] The technical solution adopted by...

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): G02B13/00
CPCG02B13/0015G02B13/006
Inventor 王建平魏书贵陈伟苏耀年龙伟华谢俊敏刘勇谢宁王森联
Owner FOSHAN HUAGUO OPTICAL
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