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

Camera

A camera, image-side technology, applied in the field of cameras, to achieve the effect of reducing aberration and good imaging effect

Inactive Publication Date: 2015-09-02
浙江纳兰光学科技有限公司
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, modern mobile phones are becoming more and more ultra-thin, and TTL must be shortened, which is a major problem in current camera design and production

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
  • Camera
  • Camera
  • Camera

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] Such as figure 1 As shown, the camera of the present invention includes a first lens 1 , a second lens 2 , a third lens 3 and a fourth lens 4 arranged in sequence from the object side to the image side. Wherein, the first lens 1 is a positive lens with a low refractive index; the second lens 2 is a negative lens with a high refractive index; the third lens 3 is a positive lens with a low refractive index; the fourth lens 4 is a negative lens with a low refractive index. low refractive index. Generally speaking, a refractive index above 1.59 is called a high refractive index, and a refractive index below 1.55 is called a low refractive index. Through this "positive-negative-positive-negative" four-piece lens structure and "low-high-low-low"...

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 relates to a camera. The camera comprises, from an object side to an image side in sequence, a first lens, a second lens, a third lens and a fourth lens. The first lens is a positive lens and has a low refractive index. The second lens is a negative lens and has a high refractive index. The third lens is a positive lens and has a low refractive index. The fourth lens is a negative lens and has a low refractive index. A diaphragm of the camera is arranged in front of the first lens. The camera is of a structure with four lens arranged in a positive-negative-positive-negative order, and the four lenses are a combination with the refractive index arranged in a low-high-low-low order. Compared with the prior art, the camera enables various aberrations to be effectively reduced while meeting the requirement of the quite short optical overall length, and is especially greatly corrected in transverse and vertical aberrations.

Description

technical field [0001] The invention relates to a camera. Background technique [0002] With the rapid development and popularization of smart phones, the research and development and design of cameras have developed rapidly. Especially in the past two years, with the emergence of high-end smart phones, the quality of cameras has become an important indicator of the market. Traditional high-resolution cameras (more than 8 megapixels) are generally composed of 5 lenses, and a few use 4 lenses. In order to achieve a large field of view and short TTL, while meeting the customer's requirements for a small F number, reduce the lens size. Spherical aberration, coma, astigmatism, field curvature, distortion, and chromatic aberration are very important. [0003] Based on the manufacturing tolerances of the existing technology, especially the eccentricity between the lens and the lens, and the lack of coordination between the lens and the lens barrel during the assembly process, the...

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): G02B13/18G02B13/00
CPCG02B9/34G02B13/004G02B13/18
Inventor 张慧燕张岩峰尧群富覃道发
Owner 浙江纳兰光学科技有限公司