Optical imaging system for vehicle monitoring

An optical imaging system and vehicle monitoring technology, applied in optics, optical components, instruments, etc., can solve the problems of long length, large size, and insufficient field of view, and achieve the effect of large aperture, loose lens tolerance, and cost reduction.

Active Publication Date: 2015-11-11
信华精机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

The existing vehicle-mounted lens cannot meet the high imaging quality requirements of the current driving recorder in terms of definition, while the same type of high-definitio

Method used

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  • Optical imaging system for vehicle monitoring
  • Optical imaging system for vehicle monitoring
  • Optical imaging system for vehicle monitoring

Examples

Experimental program
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Example Embodiment

[0028] Example

[0029] Such as figure 1 As shown, this embodiment provides an optical imaging system for vehicle monitoring, including a front lens group with positive refractive power, a diaphragm 7, a rear lens group with positive refractive power, and a filter arranged in sequence from the object plane to the image plane. Light sheet 8, the front lens group is sequentially provided with a first lens 1 with negative refractive power, a second lens 2 with negative refractive power, and a third lens 3 with positive refractive power, and the rear lens group is sequentially provided with The fourth lens 4 with positive refractive power, the fifth lens 5 with negative refractive power, and the sixth lens 6 with positive refractive power are provided, wherein the fourth lens 4 and the fifth lens 5 are combined into a cemented lens. Through reasonable design of the lens structure, the present invention finally designs an optical system for vehicle monitoring with a total length of l...

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Abstract

The invention discloses an optical imaging system for vehicle monitoring. The optical imaging system comprises a front lens group with positive focal power, a diaphragm, a rear lens group with positive focal power, and an optical filter which are successively arranged from an object side to an image side. The front lens group successively comprises a first lens with negative focal power, a second lens with negative focal power, and a third lens with positive focal power. The rear lens group successively comprises a fourth lens with positive focal power, a fifth lens with negative focal power, and a sixth lens with positive focal power, wherein the fourth lens and the fifth lens form a balsaming lens. By means of reasonable lens structural design, the optical imaging system for vehicle monitoring is provided with an optical length less than 18.3mm, a 4.8mm back focal length, a 143-degree total field angle, and 2-million-piexl resolution. The optical imaging system has small lens size, relatively large aperture, good imaging quality at night with low illumination, and effectively decreased in cost.

Description

technical field [0001] The invention relates to an optical imaging system, in particular to an optical imaging system applied to driving recorders and vehicle monitoring. Background technique [0002] With the development of society, the requirements for safety and monitoring in various fields are getting higher and higher, especially in the field of transportation and vehicle monitoring. At present, the mainstream surveillance, camera, and vehicle-mounted lenses on the market are mainly of low resolution, and cannot work normally when the light is weak, especially at night. It is far from being able to meet the requirements of high-definition pictures and 24-hour normal work required by monitoring, camera, and vehicle requirements. With the development of the security industry and the maturity of monitoring technology, the demand and quality of the lens continue to increase. Moreover, at present, vehicle-mounted products are developing toward high image quality and miniat...

Claims

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Application Information

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IPC IPC(8): G02B13/06G02B13/00G02B1/00
Inventor 冷家开陈婷陈庆峰宋勇
Owner 信华精机有限公司
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