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

Monitoring lens for vehicle

A technology for lenses and vehicles, applied in optical components, optics, instruments, etc., can solve problems such as high cost and complex structure, and achieve the effect of lightweight cost, high resolution, and small aperture

Active Publication Date: 2021-07-02
SIRTEC INT SUZHOU
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current driver status monitoring lens has a complex structure, high cost, and high resolution requirements cannot be met

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
  • Monitoring lens for vehicle
  • Monitoring lens for vehicle
  • Monitoring lens for vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] A kind of monitoring lens for vehicle, see Figure 1-Figure 6 : It includes the first lens L1, the second lens L2, the third lens L3, the fourth lens L4 and the fifth lens L5 arranged in order from the object side to the image side along the optical axis; The second arrangement is color filter IR, protective glass CG and IMA;

[0031] The first lens L1 has negative refractive power and satisfies Nd135, where Nd1 refers to the refractive index of the first lens L1, Vd1 refers to the Abbe number of the first lens L1; the first lens L1 satisfies dn / dt1>3X10 -6 ℃, where dn / dt1 refers to the temperature coefficient of refractive index of the first lens L1; the object side of the first lens L1 is concave;

[0032] The second lens L2 has positive refractive power and satisfies Nd2>1.85, Vd2<35, where Nd2 refers to the refractive index of the second lens L2, Vd2 refers to the Abbe number of the second lens L2, and the object side surface of the second lens L2 is convex;

...

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 monitoring lens for a vehicle, which has the characteristics of high resolution, large aperture, small distortion and low cost, and is suitable for monitoring the state of a driver. The first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged from the object side to the image side along the optical axis; a color filter, protective glass and an IMA are sequentially arranged behind the image side of the fifth lens, the first lens has negative focal power, and the object side surface of the first lens is a concave surface; the second lens has positive focal power, and the object side surface of the second lens is a convex surface; the third lens has negative focal power, and the object side surface of the third lens is a concave surface; the fourth lens is a positive focal power lens, and the image side surface of the fourth lens is a convex surface; the fifth lens is a positive focal power lens, and the object side surface of the fifth lens is a convex surface; and the first lens, the second lens, the third lens, the fourth lens and the fifth lens are all lenses made of glass materials, so that the lens can perform clear imaging at the temperature ranging from -40 DEG C to 105 DEG C.

Description

technical field [0001] The invention relates to the technical field of lens structures, in particular to a vehicle monitoring lens. Background technique [0002] With the rapid development and wide application of intelligent assisted driving systems, the requirements for monitoring the vehicle status and the driver's driving status are constantly increasing. In order to improve the capture of the driver's facial expression and provide instant and accurate fatigue driving warnings, high resolution, Surveillance lenses with large aperture, small distortion, and low cost are becoming more and more popular. The current driver status monitoring lens has a complex structure, high cost, and cannot meet the requirements of high resolution. Contents of the invention [0003] In view of the above problems, the present invention provides a vehicle monitoring lens, which has the characteristics of high resolution, large aperture, small distortion, and low cost, and is suitable for dr...

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): G02B13/00G02B1/00
CPCG02B13/0015G02B1/00Y02T10/40
Inventor 吴喆明孙振中罗艳波刘兴国朱刘辉杨井留
Owner SIRTEC INT SUZHOU