Anti-fatigue-driving vehicle-mounted monitoring optical system and camera module thereof

An optical system, vehicle-mounted monitoring technology, applied in optics, optical components, instruments, etc., can solve the problems of large volume and complex structure, and achieve the effect of small volume, small number of lenses, and low cost

CN108761731AActive Publication Date: 2018-11-06GUANGDONG HONGJING OPTOELECTRONICS TECHONLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-11-06

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Abstract

The embodiment of the invention discloses an anti-fatigue-driving vehicle-mounted monitoring optical system. The anti-fatigue-driving vehicle-mounted monitoring optical system includes, in order froman object plane to an image plane along the optical axis, a first lens, a second lens, a third lens, and a fourth lens; an object side of the first lens is a convex surface, an image side of the firstlens is a concave surface, and the refractive power of the first lens is negative; an object side of the second lens is a convex surface, an image side of the second lens is a concave surface, and the refractive power of the second lens is positive; an object side of the third lens is a convex surface, an image side of the third lens is a convex surface, and the refractive power of the third lensis positive; and an object side of the fourth lens is a concave surface, an image side of the fourth lens is a convex surface, and the refractive power of the fourth lens is positive. On the other hand, the embodiment of the invention further provides a camera module. The optical system and the camera module of the embodiment of the invention are mainly composed of four lenses, the number of lenses is small, the structure is simple, the size is small, the weight is light, and the cost is low; the different lenses are combined with each other and the refractive power is reasonably distributed;and the anti-fatigue-driving vehicle-mounted monitoring optical system has good optical performance and can match a small anti-fatigue-driving vehicle-mounted monitoring system.
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Description

Technical field:

[0001] The invention relates to an optical system and an applied camera module, in particular to a vehicle-mounted monitoring optical system for anti-fatigue driving and an applied camera module. Background technique:

[0002] Existing on-vehicle monitoring optical systems or camera modules for anti-fatigue driving generally have the problems of complex structure, large volume, low pixels, long overall length, and high cost, which is not conducive to the miniaturization of early warning systems. Invention content:

[0003] In order to overcome the common problems of complex structure and large volume in the existing on-vehicle monitoring optical system or camera module for anti-fatigue driving, an embodiment of the present invention provides an on-vehicle monitoring optical system for anti-fatigue driving.

[0004] A vehicle-mounted monitoring optical system for anti-fatigue driving, which sequentially includes: a first lens, a second lens, a third lens, a...

Examples

Embodiment Construction

[0016] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0017] When ordinal numerals such as "first" and "second" are mentioned in the embodiments of the present invention, unless they really express the meaning of order according to the context, it should be understood that they are only used for distinction.

[0018] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it...