optical imaging system

An optical imaging system and imaging surface technology, applied in optics, optical components, instruments, etc., can solve the problems of high positioning accuracy and inability to correct f-theta distortion strictly, and achieve the effect of high positioning accuracy and high imaging quality
CN108761737BActive Publication Date: 2020-07-03ZHEJIANG SUNNY OPTICAL CO LTD
8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG SUNNY OPTICAL CO LTD
Publication Date
2020-07-03

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

An optical imaging system, which successively comprises along an optical axis from an object side to an image side: a first lens (E1), a second lens (E2), a third lens (E3), a fourth lens (E4), a fifth lens (E5), and a sixth lens (E6). The first lens (E1) has negative refractive power, and an image side surface (S2) thereof is a concave surface; the second lens (E2) has positive refractive power; the third lens (E3) has positive refractive power, and an object side surface (S5) and image side surface (S6) thereof are both convex surfaces; the fourth lens (E4) has refractive power; the fifth lens (E5) has refractive power; the sixth lens (E6) has refractive power, an object side surface (S11) thereof is a convex surface, and an image side surface (S12) thereof is a concave surface. A maximum effective semi-diamater DT12 of the image side surface (S2) of the first lens (E1) and a half ImgH of the diagonal length of an effective pixel area on an imaging surface (S15) of the optical imaging system meets 0<DT12 / ImgH<1.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present application relates to an optical imaging system, and more particularly, the present application relates to an optical imaging system including six lenses. Background technique

[0002] In recent years, imaging lenses equipped with commonly used photosensitive elements such as photosensitive coupling devices (CCD) or complementary metal oxide semiconductor devices (CMOS) have been widely used in various fields. These lenses can not only be used to capture images, but also can be used for spatial positioning. technology. However, most traditional lenses cannot achieve strict correction of f-ΞΈ distortion, so they cannot achieve high positioning accuracy while obtaining better image quality.

[0003] At the same time, with the improvement of the performance and the reduction of the size of commonly used photosensitive elements such as CCD or CMOS, the number of pixels of the photosensitive element increases and the size of the pixel decreases...

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