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A vehicle fixed focus lens

A fixed-focus lens and lens technology, applied in optical components, instruments, optics, etc., can solve the problems of driver discomfort, high price, and large size, and achieve the effect of strong light collection ability, simple structure, and clear imaging

Active Publication Date: 2022-07-01
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary optical lenses may also have the problem of large size, which is inconvenient to install in the car, and may also cause the driver to feel that he is being stared at, causing discomfort to the driver
The performance of general optical lenses is also difficult to match the requirements of the aforementioned application scenarios, and there is also the problem of high prices

Method used

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  • A vehicle fixed focus lens
  • A vehicle fixed focus lens
  • A vehicle fixed focus lens

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Embodiment Construction

[0023] In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be cleared and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments are part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0024] see figure 1 , is the structure diagram of the optical system of the present invention, the vehicle-mounted fixed-focus lens includes 4 lenses, the 4 lenses are arranged in the form of negative, positive and negative, and the 4 lenses include the first negative lenses arranged coaxially along the incident direction of the light. 1. The first...

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Abstract

The invention discloses a vehicle-mounted fixed-focus lens. The lens includes four lenses and a flat glass. The lenses are sequentially formed of a negative lens, a positive lens, a negative lens and a negative lens along the light incident direction; the focal length of the lens is 5.4mm, and the F number is 2.1, the field of view angle is 60°, and the total optical length of the system is 12.88mm; the lens works in the visible light band, and can be mainly used as a vehicle lens to monitor the driver's driving behavior and timely remind the driver to avoid distracted driving; the lens design process fully Considering the cost factor, only 4 optical lenses are used, including 1 aspherical lens and 3 spherical lenses; various aberrations are strictly corrected and controlled during the lens design process, and the final lens has low cost and excellent image quality. , The advantages of relatively large aperture and miniaturization.

Description

technical field [0001] The invention relates to the technical field of optical design, in particular to a vehicle-mounted fixed-focus lens. Background technique [0002] Continued driving for a long time may lead to a decrease in the driver's concentration, slow response, and even distracted driving, which seriously threatens driving safety. Therefore, it is generally required that the driver must stop and rest for a period of time after driving continuously for several hours to ensure sufficient energy. However, in many cases, drivers often reduce their rest time in order to improve transportation efficiency, but they do not realize that they are already driving fatigued, resulting in serious driving hazards. If the driver's driving behavior can be monitored in real time through the optical lens, and the suggestions for parking and rest can be timely proposed according to their driving status, it will be of great significance to driving safety. [0003] The alignment plan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B1/00
CPCG02B13/004G02B1/00G03B30/00
Inventor 陈建军李雪
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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