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

Wide viewing angle camera lens

A camera lens and wide viewing angle technology, applied in the field of wide viewing angle camera lens, can solve problems such as difficult system aberration correction, achieve the effects of reducing sensitivity, good imaging quality, and expanding the field of view

Active Publication Date: 2013-03-27
LARGAN PRECISION
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly seen large-angle camera lenses are mostly configured with negative refractive power for the front group lens and positive refractive power for the rear group lens, forming a so-called inverse telephoto (Inverse Telephoto) structure, thereby obtaining the characteristics of a wide field of view. As shown in U.S. Patent No. 7,446,955, it is a four-piece lens structure with negative refractive power in the front group and positive refractive power in the rear group. One lens, it is difficult to make good compensation for system aberration

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
  • Wide viewing angle camera lens
  • Wide viewing angle camera lens
  • Wide viewing angle camera lens

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0101] Please refer to the schematic diagram of the optical system of the first embodiment of the present invention Figure 1A , for the aberration curve of the first embodiment, please refer to Figure 1B . The wide-angle camera lens of the first embodiment is mainly composed of five lenses, which include sequentially from the object side to the image side: a front group lens group, an aperture 100 and a rear group lens group, wherein:

[0102] The front group lens group includes in order from the object side to the image side:

[0103] A first lens 110 with negative refractive power, the object side surface 111 is convex and the image side surface 112 is concave, and its material is glass; and

[0104] A second lens 120 with positive refractive power, its object-side surface 121 and image-side surface 122 are both convex, and its material is plastic, and the object-side surface 121 and image-side surface 122 of the second lens 120 are both aspherical;

[0105] The rear gro...

no. 2 example 》

[0135] Please refer to the schematic diagram of the optical system of the second embodiment of the present invention Figure 2A , for the aberration curve of the second embodiment, please refer to Figure 2B . The wide-angle camera lens of the second embodiment is mainly composed of five lenses, which include sequentially from the object side to the image side: a front group lens group, an aperture 200 and a rear group lens group, wherein:

[0136] The front group lens group includes in order from the object side to the image side:

[0137] A first lens 210 with negative refractive power, its object side surface 211 is convex and image side surface 212 is concave, its material is plastic, the object side surface 211 and image side surface 212 of the first lens 210 are both aspherical ;and

[0138] A second lens 220 with positive refractive power, its object-side surface 221 is convex and image-side surface 222 is concave, its material is plastic, the object-side surface 221...

no. 3 example 》

[0163] Please refer to the schematic diagram of the optical system of the third embodiment of the present invention Figure 3A , for the aberration curve of the third embodiment, please refer to Figure 3B . The wide-angle camera lens of the third embodiment is mainly composed of five lenses, which include sequentially from the object side to the image side: a front group lens group, an aperture 300 and a rear group lens group, wherein:

[0164] The front group lens group includes in order from the object side to the image side:

[0165] A first lens 310 with negative refractive power, the object side surface 311 is convex and the image side surface 312 is concave, and its material is glass;

[0166] A second lens 320 with positive refractive power, its object side surface 321 is concave and image side surface 322 is convex, its material is plastic, the object side surface 321 and image side surface 322 of the second lens 320 are both aspherical ;and

[0167] A third lens ...

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 provides a wide viewing angle camera lens. From an object side to an image side, the camera lens sequentially comprises: a front group of lens group, an aperture and a rear group of lens group. The front group of lens group, from the object side to the image side, sequentially comprises: a first lens, possessing a negative flexion force and the concave image side surface; a second lens. The rear group of lens group, from the object side to the image side, sequentially comprises: a third lens, possessing a positive flexion force, the concave object side surface and the convex image side surface; a fourth lens, possessing the positive flexion force, the convex object side surface and the convex image side surface; a fifth lens, possessing the negative flexion force and the concave object side surface. By using an above lens group configuration mode, field of view of the wide viewing angle camera lens can be effectively enlarged; sensitivity of a system can be reduced and good image quality can be obtained.

Description

technical field [0001] The present invention relates to a wide viewing angle camera lens; in particular, it relates to a wide viewing angle camera lens with large viewing angle and miniaturization. Background technique [0002] In recent years, due to the wide range of applications of optical camera lenses, especially in mobile phone cameras, computer network cameras, automotive lenses, security image monitoring and electronic entertainment and other industries, the photosensitive elements of general camera lenses are nothing more than It is a photosensitive coupling device (Charge Coupled Device, CCD) or a complementary metal oxide semiconductor device (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor), and due to the improvement of manufacturing technology, the pixel area of ​​the photosensitive element is reduced, and the camera lens The field of high pixel and miniaturization is gradually developing, so the requirements for imaging quality are also increasing....

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
Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/06G02B13/18G02B13/00
Inventor 谢东益汤相岐蔡宗翰
Owner LARGAN PRECISION