CN112346287A

CN112346287A - Camera shooting module

Info

Publication number: CN112346287A
Application number: CN202011339847.4A
Authority: CN
Inventors: 张扣文; 倪榆达; 唐新科
Original assignee: Ningbo Wissen Intelligent Sensing Technology Co Ltd
Current assignee: Ningbo Wissen Intelligent Sensing Technology Co Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-02-09

Abstract

The invention relates to a camera shooting module, which comprises a lens (1) and an infrared light supplementing device (2) positioned on one side of the lens (1), wherein the infrared light supplementing device (2) comprises a lamp plate (21), and a first light supplementing lamp (22) and a second light supplementing lamp (23) which are symmetrically arranged on the lamp plate (21), the first light supplementing lamp (22) and the second light supplementing lamp (23) emit light relative to the direction of the side wall of the lens (1) inclining outwards, and the height of the intersection point of light supplementing angles of the first light supplementing lamp (22) and the second light supplementing lamp (23) from the horizontal plane is smaller than the focusing distance of the lens (1). The camera module is small in size.

Description

Camera shooting module

Technical Field

The invention relates to the technical field of optics, in particular to a camera module.

Background

In recent years, with the continuous progress of science and technology and the continuous improvement of the living consumption level of people, the integration level of digital electronic equipment is higher and higher, equipment such as mobile phones, digital cameras and video cameras with the image pick-up function is developed towards the direction of miniaturization, ultra-thin telephone and easy carrying, and an optical lens is used as an essential component in a machine vision system and directly influences the quality of imaging quality and the overall dimension of the image pick-up equipment. This is especially true for in-vehicle monitoring wide-angle camera modules. The vehicle-mounted module needs to guarantee the reliability of the vehicle gauge level, the small and exquisite product size is achieved, and the installation compatibility of the product is improved.

Disclosure of Invention

The present invention is directed to solve the above problems and to provide a small-sized camera module.

In order to achieve the purpose of the invention, the invention provides a camera module, which comprises a lens and an infrared light supplement device positioned on one side of the lens, wherein the infrared light supplement device comprises a lamp plate and a first light supplement lamp and a second light supplement lamp which are symmetrically arranged on the lamp plate, the first light supplement lamp and the second light supplement lamp emit light in the direction inclining outwards relative to the side wall of the lens, and the height from the intersection point of light supplement angles of the first light supplement lamp and the second light supplement lamp to the horizontal plane is smaller than the focusing distance of the lens.

According to an aspect of the present invention, the size of the light compensation angle of the first light compensation lamp and the second light compensation lamp is θ 1, and the first light compensation lamp and the second light compensation lamp respectively have an inclined included angle θ with the central axis of the lens, which satisfies the following conditions: theta 1+ theta > the field angle of the lens.

According to an aspect of the present invention, the lens is located outside a fill light angle of the first fill light and the second fill light.

According to an aspect of the present invention, the first fill-in lamp, the second fill-in lamp, and the lens are arranged at a vertical field angle.

According to one aspect of the invention, the lamp panel is a flexible circuit board, the first light supplement lamp and the second light supplement lamp are fixed on the flexible circuit board, and metal reinforcing plates are respectively arranged on the flexible circuit board at positions where the first light supplement lamp and the second light supplement lamp are fixed, and on the sides of the flexible circuit board, which are opposite to the first light supplement lamp and the second light supplement lamp.

According to one aspect of the invention, a light blocking convex rib is arranged on one side of the light blocking shell far away from the lens.

According to one aspect of the invention, the light-blocking housing and the support are both made of a metal material.

According to one aspect of the present invention, the light-blocking housing surface is matte-treated.

According to the camera module, the first light supplement lamp and the second light supplement lamp are fixedly installed on one lamp panel, arranged on one side of the lens and arranged at a certain inclination angle, so that the overall size of the camera module can be reduced. And the distance from the intersection point of the light supplementing angles of the first light supplementing lamp and the second light supplementing lamp to the horizontal plane is smaller than the focusing distance of the lens, so that the imaging clarity of the lens is guaranteed.

The lens is positioned outside the light supplementing angles of the first light supplementing lamp and the second light supplementing lamp. So set up, can be so that the light that first light filling lamp and second light filling lamp sent can not shine on the lens, avoid taking place light interference, can make the distance setting between camera lens and first light filling lamp and the second light filling lamp as far as under this condition, be favorable to further reducing the size of the module of making a video recording. And theta 1+ theta is larger than the field angle of the lens, so that the first light supplement lamp and the second light supplement lamp can provide supplementary lighting assistance for imaging of the lens, and the imaging quality of the lens is ensured.

According to the camera module, the first light supplement lamp, the second light supplement lamp and the lens are arranged on the vertical field angle. By the arrangement, the influence of stray light on imaging can be effectively reduced.

Drawings

Fig. 1 schematically shows a front view of a camera module according to the invention;

fig. 2 schematically shows a perspective view of a camera module according to the invention;

fig. 3 is a schematic view illustrating the structures of a first fill-in lamp and a second fill-in lamp according to the present invention;

fig. 4 is a view schematically illustrating an installation angle of a first fill-in lamp and a second fill-in lamp according to the present invention;

FIG. 5 is a schematic diagram of a lamp panel according to the present invention;

fig. 6 schematically shows a structural view of a light-blocking housing according to the invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.

As described with reference to fig. 1 to 4, the present invention provides a camera module, which includes a lens 1 and an infrared light supplement device 2 located at one side of the lens 1. The infrared light supplement device 2 comprises a lamp panel 21 and a first light supplement lamp 22 and a second light supplement lamp 23 which are symmetrically arranged on the lamp panel 21, wherein the first light supplement lamp 22 and the second light supplement lamp 23 emit light in an outward inclined direction relative to the side wall of the lens, and the height of the intersection point of light supplement angles (light emitting angle ranges) of the first light supplement lamp 22 and the second light supplement lamp 23 from the horizontal plane is smaller than the focusing distance of the lens 1.

According to the camera module, the first light supplement lamp 22 and the second light supplement lamp 23 are fixedly installed on the lamp panel 21, arranged on one side of the lens 1 and arranged at a certain inclination angle, so that the overall size of the camera module can be reduced. And the distance from the intersection point of the light supplement angles of the first light supplement lamp 22 and the second light supplement lamp 23 to the horizontal plane is less than the focusing distance of the lens 1, which is beneficial to ensuring the clear imaging of the lens 1.

In the camera module, the size of the light compensation angle of the first light compensation lamp 22 and the second light compensation lamp 23 is theta 1, and the inclined included angles between the first light compensation lamp 22 and the second light compensation lamp 23 and the central axis of the lens are theta respectively, so that the following requirements are met: θ 1+ θ + θ > the field angle of the lens 1. As shown in fig. 4, specifically, the fill-in angle is an angle range within which the first fill-in lamp 22 and the second fill-in lamp 23 can emit light. On the other hand, the lens 1 of the present invention is located outside the fill-in angles of the first fill-in lamp 22 and the second fill-in lamp 23.

So set up, can make the light that first light filling lamp 22 and second light filling lamp 23 sent can not shine camera lens 1 on, avoid taking place light interference, can make the distance between camera lens 1 and first light filling lamp 22 and the second light filling lamp 23 set up as closely as possible under this condition, be favorable to further reducing the size of making a video recording the module. And theta 1+ theta > the field angle of the lens 1, which is beneficial to ensuring that the first supplementary lighting lamp 22 and the second supplementary lighting lamp 23 can provide supplementary lighting assistance for the imaging of the lens 1, and ensuring the imaging quality of the lens 1.

Referring to fig. 1, in the camera module of the present invention, a first fill-in light 22, a second fill-in light 23 and a lens 1 are arranged at a vertical field angle. By the arrangement, the influence of stray light on imaging can be effectively reduced.

Referring to fig. 3 and 5, according to an embodiment of the present invention, the lamp panel 21 is a flexible circuit board, the first light supplement lamp 22 and the second light supplement lamp 23 are fixed on the flexible circuit board, and metal reinforcing plates 24 are respectively disposed on the flexible circuit board at positions where the first light supplement lamp 22 and the second light supplement lamp 23 are fixed, and on sides of the flexible circuit board opposite to the first light supplement lamp 22 and the second light supplement lamp 23. So set up, can make the heat efficient conduction that first light filling lamp 22 and second light filling lamp 23 work produced on the metal reinforcing plate, be favorable to the heat dissipation.

Referring to fig. 2 and 6, the infrared light supplement device 2 of the present invention further includes a light blocking housing 3 connected to the lens 1, and according to the present invention, the light blocking housing 3 may be fixedly connected to the lens 1 by means of screws, adhesives, or welding. As shown in fig. 2 and 6, according to an embodiment of the present invention, the light blocking housing 3 and the lens 1 are fixed by means of screw connection.

Referring to fig. 6, a bracket 31 for mounting the lamp panel 21, the first supplementary lighting lamp 22 and the second supplementary lighting lamp 23 is disposed inside the light blocking housing 3 according to the present invention. According to the present invention, the shape of the bracket 31 is not limited, and the structure that can be used to mount the lamp panel 21, the first fill-in light 22, and the second fill-in light 23 may be basically the same.

The light blocking convex rib 32 is arranged on one side of the light blocking shell 3 far away from the lens. The light blocking ribs 32 can effectively block the light reflection path and eliminate the influence of stray light.

In the present invention, the light-blocking housing 3 and the holder 31 are made of metal materials. So set up, the heat that first light filling lamp 22 and the work of second light filling lamp 23 produced can transmit to support 32 through metal reinforcing plate 24 and then on the shell 3 that is in the light, be favorable to quick heat dissipation.

In addition, the surface of the light blocking shell 3 is subjected to matte treatment, so that the reflection of light in the module can be greatly reduced, and the influence of stray light is eliminated.

The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and it is apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a camera shooting module, includes camera lens (1), is located camera lens (1) one side infrared light filling device (2), infrared light filling device (2) include lamp plate (21) and install first light filling lamp (22) and second light filling lamp (23) that the symmetry set up on lamp plate (21), its characterized in that, first light filling lamp (22) with second light filling lamp (23) for the direction that camera lens (1) lateral wall leaned out is luminous, and first light filling lamp (22) with the highly is less than of the nodical distance horizontal plane of the light filling angle of second light filling lamp (23) the focusing distance of camera lens (1).

2. The camera module according to claim 1, wherein the size of the light compensation angle of the first light compensation lamp (22) and the second light compensation lamp (23) is θ 1, and the first light compensation lamp (22) and the second light compensation lamp (23) respectively have an inclined included angle θ with the central axis of the lens (1), so that the following requirements are met: theta 1+ theta > the angle of view of the lens (1).

3. The camera module according to claim 2, wherein the lens (1) is located outside the fill-in angles of the first fill-in light (22) and the second fill-in light (23).

4. The camera module according to claim 1 or 3, wherein the first fill-in light (22), the second fill-in light (23) and the lens (1) are arranged at a vertical field angle.

5. The camera module according to claim 4, wherein the lamp panel (21) is a flexible circuit board, the first light supplement lamp (22) and the second light supplement lamp (23) are fixed on the flexible circuit board, and a metal reinforcing plate (24) is respectively arranged on one side of the flexible circuit board, which is opposite to the first light supplement lamp (22) and the second light supplement lamp (23), where the first light supplement lamp (22) and the second light supplement lamp (23) are fixed.

6. The camera module according to claim 5, wherein the infrared light supplement device (2) further comprises a light-blocking housing (3) connected to the lens (1), and a bracket (31) for mounting the lamp panel (21), the first light supplement lamp (22) and the second light supplement lamp (23) is disposed inside the light-blocking housing (3).

7. The camera module according to claim 6, wherein a light blocking rib (32) is disposed on a side of the light blocking housing (3) away from the lens (1).

8. The camera module according to claim 6, characterized in that the light barrier housing (3) and the holder (31) are made of a metal material.

9. The camera module according to claim 6, wherein the light blocking housing (3) is matte-treated on its surface.