CN111866313A

CN111866313A - Camera module

Info

Publication number: CN111866313A
Application number: CN201910343626.5A
Authority: CN
Inventors: 蔡宜静
Original assignee: Zhishen Technology Co ltd
Current assignee: Zhishen Technology Co ltd; Primax Electronics Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-10-30

Abstract

The invention provides a camera module, which comprises a shell with a shell opening, a lens assembly, an induction chip assembly and a filter element. The lens component is arranged in the shell, and the induction chip component is connected with the lens component. The filter element is close to the opening of the shell and positioned in front of the lens component, and can filter the outside light, so that the first wavelength light beam in the outside light can pass through the filter element, and the second wavelength light beam in the outside light is filtered. Therefore, the filter element can prevent the second wavelength light beam from being projected to the eyes of the driver.

Description

Camera module

Technical Field

The present invention relates to a camera module, and more particularly to a camera module for driving safety.

Background

In recent years, portable electronic devices such as mobile communication devices and Personal Digital Assistants (PDAs) have become popular, and a plurality of portable electronic devices are provided with a camera module, so that a user can shoot images at any time and any place by using the camera module to generate images or videos with commemorative significance. No matter what type of camera module, the camera module includes a lens assembly and a sensing chip, the lens assembly is used for refracting external light and allowing the external light to pass through for imaging, the sensing chip is provided with a sensing area, and the sensing area is used for receiving the external light to image on the sensing area, so as to generate an image.

The camera module can be applied to various electronic products, for example, a camera module in driving safety, namely a commonly-known driving recorder, because the recording capability of the camera module is very convenient. The camera module is arranged on the automobile or the locomotive to record pictures during driving. Along with the progress of science and technology, the function of the camera module applied to driving safety is also promoted, and the camera module applied to driving safety is provided on the market, so that the camera module can record driving pictures and the facial expression of a driver. The function of the device is mainly to detect whether the driver closes the eyes and send out warning when detecting that the eyes are closed, namely to detect the driving mental state of the driver.

The camera module performs imaging operation to generate an image, because the imaging operation of the camera module must make the sensing area receive external light passing through the lens assembly. Therefore, the brightness of the external light must be sufficient for the camera module to operate normally. However, when the vehicle or the locomotive runs in the night environment, the brightness of the external light is low, and the quality of the image generated by the camera module applied to driving safety is poor. Therefore, the camera module applied to traffic safety in the market is additionally provided with a light source inside so as to improve the brightness inside the camera module. The addition of the light source can improve the problem of insufficient brightness of the outside light, but the light beam generated by the light source may be emitted to the camera module, and in case the light beam is projected to the eyes of the driver, the sight of the driver may be obstructed, and serious traffic accidents may be caused.

Therefore, a camera module with improved safety is needed.

Disclosure of Invention

The invention mainly aims to provide a camera module capable of improving safety.

In a preferred embodiment, the present invention provides a camera module including a housing having a housing opening, a lens assembly, a sensing chip assembly, and a filter element. The lens assembly is disposed in the housing and extends into the opening of the housing, and the sensing chip assembly is disposed in the housing and connected to the lens assembly. The filter element is close to the opening of the shell and positioned in front of the lens component and is used for shielding the lens component and filtering external light, so that a first wavelength light beam in the external light can penetrate through the filter element and a second wavelength light beam in the external light is filtered; wherein the filter element does not reflect the second wavelength beam. The first wavelength light beam is invisible light, and the second wavelength light beam is visible light.

In a preferred embodiment, the camera module further includes a light source assembly disposed in the housing and close to the opening of the housing for generating a light beam, the light source assembly including a first circuit board and a light emitting element. The first circuit board is arranged in the shell and close to the shell opening, and the light-emitting element is arranged on the first circuit board and extends into the shell opening to generate the light beam. The first circuit board is provided with an opening, and the lens component penetrates through the opening to extend into the shell opening.

The camera module has the advantages that the filter element is arranged in front of the opening of the shell of the camera module and can shield the lens assembly by the filter element, so that the camera module is attractive. Moreover, the filter element can further provide and filter the external light and the light beams generated by the light source component, and particularly, the filter element does not reflect visible light and filters most of the visible light so as to prevent the visible light from being projected to eyes of a driver.

Drawings

Fig. 1 is a schematic structural diagram of a camera module according to a preferred embodiment of the invention.

Fig. 2 is a partially exploded view of a camera module according to a preferred embodiment of the invention.

Fig. 3 is a schematic structural diagram of a filter element and a control mechanism of a camera module according to a preferred embodiment of the invention.

Fig. 4 is a schematic top view of a filter element of a camera module according to a preferred embodiment of the invention.

FIG. 5 is a schematic view of a camera module according to an embodiment of the present invention with a filter element moved to a second position.

The reference numbers are as follows:

1 Camera Module

10 casing

11 lens assembly

12 inductive chip assembly

13 Filter element

14 light source assembly

15 control mechanism

101 casing opening

121 response chip

122 second circuit board

131 plate body

132 coating

133 first filtration zone

134 second filtration zone

141 first circuit board

142 light emitting element

151 connecting element

152 power assembly

153 control unit

1411 opening a hole

P1 first position

P2 second position

Detailed Description

The invention provides a camera module to solve the problems of the prior art. Embodiments of the invention will be further explained by the following in conjunction with the associated drawings. In the drawings, the shape and thickness may be exaggerated for simplicity and convenience. It is to be understood that elements not specifically shown in the drawings or described in the specification are in a form known to those skilled in the art. Various changes and modifications may be suggested to one skilled in the art in light of this disclosure.

First, referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a camera module according to a preferred embodiment of the present invention, and fig. 2 is a schematic partial structural exploded view of the camera module according to the preferred embodiment of the present invention. The camera module 1 includes a housing 10, a lens assembly 11, a sensing chip assembly 12, a filter element 13, a light source assembly 14, and a control mechanism 15. The housing 10 has a housing opening 101, and the housing opening 101 is provided at the center of a side wall 102 of the housing 10. The lens assembly 11 is disposed in the housing 10 and close to the housing opening 101, the lens assembly 11 functions to allow external light to pass through, and the lens assembly 11 is composed of a plurality of lenses, which can change the path of the external light according to the characteristics of the plurality of lenses. The sensing chip assembly 12 is disposed in the housing 10 and connected to the lens assembly 11.

The filter element 13 is located close to the housing opening 101 and in front of the lens assembly 11, and has two functions: firstly, the lens assembly 11 can be shielded so that the lens assembly 11 is not exposed outside the camera module 1; second, the external light can be filtered, so that the first wavelength beam of the external light can pass through the filter element 13, and conversely, the second wavelength beam of the external light can be filtered. In the preferred embodiment, the filter element 13 is made of a transparent material, the first wavelength light beam is invisible light, and the second wavelength light beam is visible light. The filter element 13 does not reflect the second wavelength light beam, and the purpose of not reflecting the second wavelength light beam is to avoid the reflected second wavelength light beam from being projected to the eyes of the driver.

In fig. 1 and 2, the light source assembly 14 is disposed in the housing 10 and near the housing opening 101, and generates a light beam. The light source assembly 14 includes a first circuit board 141 and a plurality of light emitting elements 142. The first circuit board 141 is disposed in the housing 10 and close to the housing opening 101, and the first circuit board 141 has an opening 1411, so that the lens assembly 11 can extend into the housing opening 101 through the opening 1411. The light emitting elements 142 are disposed on the first circuit board 141 and respectively extend into the housing opening 101, and function to generate light beams. Wherein, the second wavelength light beam in the light beam can also be filtered by the filter element 13. In the preferred embodiment, the first circuit board 141 is a Printed Circuit Board (PCB).

The sensing chip assembly 12 includes a sensing chip 121 and a second circuit board 122. The sensing chip 121 is connected to the lens assembly 11 and functions to receive external light passing through the lens assembly 11 to generate an image. The second circuit board 122 is connected to the sensing chip 121 to supply power to the sensing chip 121. In the preferred embodiment, the sensing element 12 is a Complementary Metal-Oxide-Semiconductor (CMOS), and the second circuit board 122 is a flexible-rigid composite board, a copper foil Substrate (FR4Substrate) or a Ceramic Substrate (Ceramic Substrate).

Please refer to fig. 3, which is a schematic structural diagram of a filter element and a control mechanism of a camera module according to a preferred embodiment of the present invention. The control mechanism 15 is connected to the filter element 13, the control mechanism 15 comprising a plurality of connecting elements 151, a power assembly 152 and a control unit 153. The connecting elements 151 are respectively connected to one side of the filter element 13, and the power assembly 152 is connected to the connecting elements 151 and is configured to provide power to the connecting elements 151, so that the connecting elements 151 drive the filter element 13 to move relative to the housing 10. The control unit 153 is connected to the power assembly 152, and can control the operation of the power assembly 152. In the preferred embodiment, the control unit 153 is a microprocessor, and the power assembly 152 may be a motor, a tractor, or any other power mechanism.

Referring to fig. 1, fig. 2 and fig. 4, fig. 4 is a schematic structural view of a filter element of a camera module according to a preferred embodiment of the invention. The filter element 13 includes a plate body 131 and a coating layer 132, the plate body 131 being located proximate to the housing opening 101 and in front of the lens assembly 11. The coating layer 132 is formed on the outer surface of the plate 131, so that the first wavelength light beam can penetrate through the plate 131 and the coating layer 132, and the second wavelength light beam is filtered to block the second wavelength light beam from passing through. In the preferred embodiment, the filter element 13 is coated with a coating layer 132, which is for illustration purpose only and not for limitation. In another preferred embodiment, the filter element can also be made of colored glass or colored film, and the components of the colored glass or the colored film must be adjusted according to the structure of the lens assembly.

In a preferred embodiment, the filter element 13 may be designed as follows: it also comprises a first filtering area 133 and a second filtering area 134, as shown in fig. 2 and 4. The first filtering region 133 is disposed at one side of the filter element 13, so that the third wavelength light beam of the first wavelength light beam passes through the filter element 13 to filter the second wavelength light beam. The second filtering area 134 is located at the other side of the filter element 13, so that the fourth wavelength light beam of the first wavelength light beam can pass through the filter element 13 to filter the second wavelength light beam. Thus, a light beam of a specific wavelength can be defined as desired to pass through the filter element 13. In the preferred embodiment, the third wavelength light beam is a light beam with a wavelength between 830nm and 860nm, and the fourth wavelength light beam is a light beam with a wavelength between 930nm and 960 nm.

The operation of the camera module 1 according to the present invention will be described. Referring to fig. 1, fig. 3 and fig. 5, fig. 5 is a schematic structural diagram illustrating a filter element of a camera module of the present invention being moved to a second position in a preferred embodiment. When the control unit 153 intends to make the third wavelength light beam pass through the filter element 13 according to the setting, the control unit 153 drives the power assembly 152, and drives the filter element 13 to move relative to the housing 10 by the movement of the plurality of connecting elements 151, and moves to the first position P1 in fig. 1. Causing the first filtering area 133 to be moved to the front of the lens assembly 11. On the contrary, when the control unit 153 intends to make the fourth wavelength light beam pass through the filter element 13 according to the setting, the control unit 153 drives the power assembly 152 to drive the filter element 13 to move relative to the housing 10 by the movement of the plurality of connecting elements 151, and move to the first position P2 in fig. 5. Causing the second filter region 134 to be moved to the front of the lens assembly 11.

According to the above, the camera module of the present invention has the filter element disposed in front of the opening of the housing, and the filter element can shield the lens assembly, so as to provide an aesthetic effect. Moreover, the filter element can further provide and filter the external light and the light beams generated by the light source component, and particularly, the filter element does not reflect visible light and filters most of the visible light so as to prevent the visible light from being projected to eyes of a driver. Therefore, the camera module of the present invention can indeed improve the problems of the prior art.

The above description is only a preferred embodiment of the present invention and should not be taken as limiting the claims, so that other equivalent changes and modifications without departing from the spirit of the present invention are intended to be included in the claims.

Claims

1. A camera module, comprising:

a housing including a housing opening;

a lens assembly disposed in the housing and extending into the opening of the housing;

the induction chip component is arranged in the shell and connected with the lens component; and

a filter element, close to the opening of the shell and located in front of the lens assembly, for shielding the lens assembly and filtering an external light, so that a first wavelength light beam in the external light can penetrate through the filter element, and a second wavelength light beam in the external light is filtered; wherein the filter element does not reflect the second wavelength beam.

2. The camera module of claim 1, further comprising a light source assembly disposed within the housing proximate to the housing opening for generating a light beam; wherein, a second wavelength light beam in the light beams can be filtered by the filter element.

3. The camera module of claim 2, wherein the light source assembly comprises:

A first circuit board disposed within the housing and proximate to the housing opening; and

a light emitting element disposed on the first circuit board and extending into the opening of the housing for generating the light beam; the first circuit board is provided with an opening, and the lens component penetrates through the opening to extend into the shell opening.

4. The camera module of claim 1, wherein the first wavelength light beam is invisible light and the second wavelength light beam is visible light.

5. The camera module of claim 1, wherein the inductive chip assembly comprises:

the sensing chip is connected with the lens component and used for receiving the external light passing through the lens component to generate an image; and

and the second circuit board is connected with the sensing chip.

6. The camera module of claim 1, wherein the filter element comprises:

a plate body close to the opening of the shell and positioned in front of the lens component; and

and the coating layer is formed on the outer surface of the plate body so that the first wavelength light beam can penetrate through the plate body and the coating layer, and the second wavelength light beam is filtered to prevent the second wavelength light beam from passing through.

7. The camera module of claim 1, wherein the filter element is made of colored glass or dyed film.

8. The camera module of claim 1, wherein the filter element comprises:

a first filtering area located at one side of the filter element to make a third wavelength beam of the first wavelength beam penetrate through the filter element and filter the second wavelength beam; and

and the second filtering area is positioned at the other side of the filtering element so as to enable a fourth wavelength light beam in the first wavelength light beam to penetrate through the filtering element and filter the second wavelength light beam.

9. The camera module of claim 8, further comprising a control mechanism coupled to the filter element, the control mechanism comprising:

a connecting element connected to the filter element;

a power assembly connected to the connecting element for providing power to the connecting element so that the connecting element can drive the filter element to move relative to the housing; and

the control unit is connected with the power assembly and used for controlling the power assembly to operate; when the filter element is moved to a first position, the first filter area is moved to the front of the lens component; when the filter element is moved to a second position, the second filter region is moved to the front of the lens assembly.