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

Lens system

A lens system and lens technology, used in optical components, optics, instruments, etc., to achieve good image quality, miniaturization, and small length.

Inactive Publication Date: 2009-03-04
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
View PDF0 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And this increased demand itself requires further miniaturization of the lens system.

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 system
  • Lens system
  • Lens system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Each optical element of the lens system 100 meets the conditions of Table 1, and its TT=11.64 millimeters (mm); f=6.91mm; f 23 =19.2939mm; FNo=3.19; 2ω=56°.

[0039] Table 1

[0040] lens system 100 Radius of curvature (mm) Thickness (mm) Refractive index Abbe number subject gigantic 1000 --- --- The surface of the first lens 10 on the object side 55.82214 0.52 1.58913 61.135 The image-side surface of the first lens 10 27.47293 1.3 --- --- Aperture 70 gigantic 0.22 --- --- The surface of the second lens 20 on the object side 3.571711 0.9761735 1.882997 40.7651 The surface of the second lens 20 on the image side -10.97649 0.1 --- ---

[0041] The surface of the third lens 30 on the object side -5.59937 0.52 1.698947 30.1279 The surface of the third lens 30 on the image side 3.373019 0.552519 --- --- The fourth lens 40 is on the object side surface 10.15544 1.23667 ...

Embodiment 2

[0044] Each optical element of the lens system 100 satisfies the conditions of Table 2, and its f=7.098mm; f 23 =18.8125mm; FNo=3.19; 2ω=53.38°

[0045] Table 2

[0046] lens system 100 Radius of curvature (mm) Thickness (mm) Refractive index Abbe number subject gigantic 1000 --- --- The surface of the first lens 10 on the object side 138 0.515 1.48749 70.4058 The image-side surface of the first lens 10 38.5071 1.2933 --- --- Aperture 70 gigantic 0.2166 --- --- The surface of the second lens 20 on the object side 3.434642 0.9954933 1.90217 40.7651 The surface of the second lens 20 on the image side -12.82318 0.1 --- --- The surface of the third lens 30 on the object side -6.115171 0.515 1.729672 28.6914 The surface of the third lens 30 on the image side 3.257676 0.553578 --- --- The fourth lens 40 is on the object side surface 8.529067 1.220021 1.743972 44.8504

[0047] ...

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 lens system which sequentially comprises a first lens with negative power, a second lens with positive power, a third lens with negative power, a fourth lens with positive power, a fifth lens with negative power and a sixth lens with positive power from the object side to the image side. The lens system satisfies the following conditions: TT / f is less than or equal to 168 and f / f23 is more than 0.3 and less than 0.4; wherein, TT is the distance from the surface of the first lens near the object side to the image side of the system, f23 is the effective focal length of the lens combination of the second lens and the third lens, and f is the effective focal length of the lens system.

Description

technical field [0001] The invention relates to a lens system, in particular to a lens system for electronic equipment. Background technique [0002] In recent years, with the development of multimedia, there is an increasing demand for imaging elements of solid-state imaging devices such as CCD (Charged Coupled Device) or CMOS (Complementary Metal Oxide Semiconductor) used in laptop computers, videophones, and mobile phones. And this increased demand itself requires further miniaturization of the lens system. [0003] On the other hand, due to the improvement of the process technology of these solid-state imaging devices such as CCD or CMOS, imaging devices with each pixel only a few microns in size have been produced, which makes the system miniaturized and improves the resolution requirements of the camera lens. Therefore, providing a lens system with a small length, excellent optical performance and good imaging quality is the development direction of today's miniature ...

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 Applications(China)
IPC IPC(8): G02B13/00G02B9/62G02B1/02
CPCG02B13/22G02B13/005G02B9/62
Inventor 林群翎黄俊翔李崇
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD