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Camera lens used for vehicle-mounted AR-ADAS

A camera lens and lens technology, which is applied in the field of camera lenses for vehicle-mounted AR-ADAS, can solve problems affecting automatic driving, huge light sources, and large field of view angles, and achieve sharp and clean images, uniform image images, and clear images

Pending Publication Date: 2018-06-05
平湖动态电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing vehicle-mounted AR-ADAS camera lenses have the following disadvantages: 1. The focal length is short and the field of view is large. The vehicle-mounted ADAS lens has strict requirements on the field of view, and the level is 30 degrees. Short, unable to meet the requirements; 2. Poor picture transparency: At present, the lens on the market will have the phenomenon of picture fogging, mainly including chromatic aberration, halo, stray light, light diffraction effect and other problems, which will affect the post-processing of ADAS images and judgments that affect autonomous driving
Therefore, a lens with a transparent picture and high sharpness is required; 3. The light suppression effect is poor when shooting under strong light: when shooting with a car camera at night, you often encounter strong light sources such as headlights of oncoming vehicles and street lights.
Under a strong light source, ordinary lenses will have a poor suppression effect of the light around the light source, causing the light source to be very large in the picture, and the objects around the light source will become darker, and the shooting picture effect will be poor, which will seriously affect the analysis of the road ahead by ADAS, posing a safety hazard
4. The working temperature range is small: In the past, the adiabatic difference was often not considered in the design of the camera lens, which led to the very unstable performance of the lens at high and low temperatures

Method used

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  • Camera lens used for vehicle-mounted AR-ADAS
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  • Camera lens used for vehicle-mounted AR-ADAS

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 As shown, the camera lens used for vehicle-mounted AR-ADAS includes sequentially from the object plane to the image plane 13: a first lens 1 with negative power, a second lens 2 with negative power, and a first lens with positive power. Three lenses 3, a fourth lens 4 with negative power, a fifth lens 5 with positive power, a sixth lens 6 with positive power, and a seventh lens 7 with positive power, the third lens 3 A diaphragm 8 is arranged between the fourth lens 4 and the fourth lens 4 and the fifth lens 5 to form a cemented lens 11, and the cemented surface of the cemented lens 11 is bent toward the image side. A filter 9 and a protective glass 10 are arranged in sequence between the seventh lens 7 and the image surface 13 . The first lens 1 , the third lens 3 and the fourth lens 4 are all heavy flint glass lenses; the fifth lens 5 is low dispersion glass; the sixth lens 6 and the seventh lens 7 are lanthanide glass lenses.

[0024] The optical r...

Embodiment 2

[0032] The lens combination of the camera lens in embodiment two is the same as embodiment one, and the difference is that the optical characteristic parameters of the lens combination are different, specifically as follows:

[0033] The optical characteristic parameters adopted in the second embodiment: focal length f=9.1, relative aperture Fno=1.8, horizontal field of view HFOV=30°, IMH / f=0.68; ft2 / f=0.78; f / f6=0.81;

[0034]

[0035] See the attachment for the specific position of the serial number in the above table Figure 4 shown in .

[0036] The optical structure of the camera lens using the above data is as attached Figure 4 As shown, the specific effect results are shown in the appendix Figure 5 And attached Figure 6 ; attached Figure 5 It is the various aberration diagrams of Embodiment 2, including axial chromatic aberration, field curvature and distortion, from the attached Figure 5 It can be seen from the figure that the axial chromatic aberration of...

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Abstract

The invention provides a camera lens used for a vehicle-mounted AR-ADAS, and belongs to the technical field of imaging of camera lenses. According to the camera lens, the technical problems that the existing camera lens of the vehicle-mounted AR-ADAS is not clear in imaging are solved. The camera lens used for the vehicle-mounted AR-ADAS comprises a first lens with negative power, a second lens with negative power, a third lens with positive power, a fourth lens with negative power, a fifth lens with positive power, a sixth lens with positive power and a seventh lens with positive power in sequence from an object surface to an image surface, wherein a diaphragm is arranged between the third lens and the fourth lens. The camera lens used for the vehicle-mounted AR-ADAS is characterized in that the fourth lens and the fifth lens are combined into a cemented lens; and a cemented surface of the cemented lens bends to an image space. The camera lens used for the vehicle-mounted AR-ADAS hasthe advantage that the imaging is clear.

Description

technical field [0001] The invention belongs to the technical field of camera lens imaging, and relates to a camera lens used for vehicle-mounted AR-ADAS. Background technique [0002] At present, automatic driving is developing rapidly, and ADAS advanced driver assistance system is a basic function of automatic driving. Currently, there are not many lenses that can be applied to ADAS on the market. ADAS lenses require a specific field of view, high-definition and transparent image quality, and a good light collection effect on the light source under strong light. Can image clearly. The existing vehicle-mounted AR-ADAS camera lenses have the following disadvantages: 1. The focal length is short and the field of view is large. The vehicle-mounted ADAS lens has strict requirements on the field of view, and the level is 30 degrees. Short, unable to meet the requirements; 2. Poor picture transparency: At present, the lens on the market will have the phenomenon of picture foggi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B1/00
CPCG02B13/00G02B1/00
Inventor 马斯颖
Owner 平湖动态电子有限公司
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