CN209897149U - Image acquisition equipment - Google Patents

Abstract

The utility model discloses an image capture device, comprising a circuit substrate, an image capture unit, a light source unit arranged on the circuit substrate and a connecting body arranged above the light source unit, the image capture unit is provided with a first and a second lens group arranged on the circuit substrate, the connecting body has a first connecting portion, a first open end of the first connecting portion abuts against the invisible light emitting element or the upper side of the circuit substrate adjacent to the invisible light emitting element, the first and the second open ends jointly define a first light source channel, the invisible light emitting element is located in the first light source channel; through the design of the utility model, the effect of preventing image light leakage is effectively achieved.

Description

image capture device

technical field

The utility model relates to an image capturing device, in particular to an image capturing device which can prevent light leakage of images.

Background technique

Face Recognition is an emerging biometric technology that automatically identifies people based on their facial features. It widely uses regional feature analysis algorithms, integrates computer image processing technology to extract portrait feature points from video, and uses relevant principle analysis to establish a mathematical model to realize face recognition.

The existing face recognition device mainly includes a lens, an infrared light-emitting diode element (infrared LED for short), an LED indicator light adjacent to the infrared LED, and a cover that covers the lens, the infrared LED and the LED indicator. It consists of receiving the infrared light source emitted by the infrared LED reflected from the face of a person through the lens to obtain the face image to achieve the function of face recognition (or recognition). However, due to the high brightness requirements of the infrared LED, high-brightness infrared light , the light of the infrared LED is very easy to penetrate into a base of the lens next to it, which causes the problem of image light leakage in the lens, and then the accuracy of face recognition is reduced or cannot be recognized. In addition, when the infrared light source and the LED indicator light irradiate the infrared light source and the LED indicator light source from an opening corresponding to the cover body, a part of the light source will be hit on the inner side of the cover body to generate refracted light. The refracted light will hit the lens and cause the problem of image refraction, thereby reducing the accuracy of face recognition (or recognition) or failing to achieve recognition.

In addition, because the LED indicator light is arranged next to the infrared LED, and the distance between the two is close, the light source of the LED indicator light and the light source of the infrared LED will interfere with each other, which will easily lead to appearance and perception. Bad question.

Utility model content

An object of the present invention is to provide an image capturing device capable of preventing image light leakage.

Another object of the present invention is to provide an image capture device that isolates light leakage from a light source of an invisible light emitting element through a connector, so as to effectively improve the efficiency of face recognition and the overall appearance.

In order to achieve the above purpose, the present invention provides an image capture device comprising a circuit substrate, an image capture unit, a light source unit and a connecting body, the circuit substrate has an upper side and a lower side, the image capture unit A first lens group and a second lens group are provided, the first and second lens groups are respectively arranged on the upper side of the circuit substrate and are electrically connected, the light source unit is provided with an invisible light emitting element, and the invisible light emitting element is provided with On the upper side of the circuit substrate and electrically connected, the connecting body is correspondingly disposed above the light source unit, the connecting body has a first connecting portion, and the first connecting portion is provided with a first open end and a pair of corresponding first A second open end of an open end, the first open end abuts on the invisible light emitting element or the upper side of the circuit substrate adjacent to the invisible light emitting element, the first and second open ends together define a first light source The invisible light emitting element is located in the first light source channel; through the design of the image capture device of the present invention, the image light leakage can be prevented, and the effect of optimizing the overall appearance and perception can be effectively achieved and the face recognition efficiency can be improved. .

Description of drawings

FIG. 1 is a schematic exploded perspective view of the first embodiment of the present invention.

FIG. 2A is a three-dimensional combined schematic diagram of the first embodiment of the present invention.

2B is a schematic cross-sectional view of the first embodiment of the present invention.

3A is a schematic perspective view of the connector of the present invention.

3B is a schematic cross-sectional view of the connector of the present invention.

FIG. 4 is a schematic block diagram of the first embodiment of the present invention.

5A is a schematic exploded perspective view of the second embodiment of the present invention.

FIG. 5B is a three-dimensional combined schematic diagram of the second embodiment of the present invention.

5C is a schematic cross-sectional view of the second embodiment of the present invention.

6 is a schematic exploded perspective view of an alternative embodiment of the present invention.

Description of reference numerals: 1-image capture device; 11-circuit board; 111-upper side; 112-lower side; 12-image capture unit; 121, 122-first and second lens groups; 1211, 1221-lens ;1213,1223-lens base;13-light source unit;131-invisible light emitting element;1311-base;1312-lens;1313-light-emitting surface;133-indicating light-emitting element;1331-light-emitting surface;14-connector;141 , 142, 143 - the first, second, and third connections; 1411, 1412, 1421, 1422, 1431, 1432 - the first, second, third, fourth, fifth, and sixth open ends; 145, 146, 147 - the first, 2 and 3 light source channels; 148-opening; 15-shell; 151, 152, 153, 154-first, second, third, and fourth through holes; 161, 162-first and second radio units; 1611, 1621- The first and second microphones; 1612, 1622-the first and second light-proof soft gaskets; 17-connector; 19-processor; 20-heat dissipation unit; 201-heat absorption surface; 202-heat dissipation surface; 21- Thermal base; 22-conductive gasket.

Detailed ways

The above-mentioned purpose of the present invention and its structural and functional characteristics will be described with reference to the preferred embodiments of the accompanying drawings.

The present invention provides an image capture device. Please refer to FIG. 1 for a schematic exploded perspective view of the first embodiment of the present invention; FIG. 2A for a schematic combined perspective view of the first embodiment of the present invention; and FIG. 2B for the present invention. 3A is a schematic perspective view of the connector of the present invention; FIG. 3B is a schematic cross-sectional view of the connector of the present invention; FIG. 4 is a schematic block diagram of the first embodiment of the present invention. The image capturing apparatus 1 in this embodiment is applied to an electronic device (such as a mobile device such as a smart mobile device, a tablet, etc., or a device such as a camera, a computer, a notebook computer, or an access control system; not shown in the figure) to perform an Recognition of the object to be measured (such as face recognition), the recognition of the object to be measured in this embodiment is the description of face recognition, but it is not limited to this. During the specific implementation, the image capture device of the present invention can also perform other biological recognition. (eg iris recognition). The image capture device 1 includes a circuit substrate 11 , an image capture unit 12 , a light source unit 13 and a connecting body 14 , and the circuit substrate 11 is represented as a printed circuit board (PCB; such as a flexible printed circuit board) in this embodiment. circuit board or a rigid printed circuit board), the circuit board 11 has an upper side 111 and a lower side 112 opposite to the upper side 111, the image capturing unit 12 is provided with a first lens group 121 and a second lens group 122. The first lens group 121 is represented as an infrared lens in this embodiment, and is used for sensing and capturing an infrared ray reflected from the object to be measured (such as the user's face) and converting it into an infrared image. The lens group 122 is represented as a CCD (Charge-coupled Device, photosensitive coupling element) lens in this embodiment, which is used for capturing color images (or recording color images and color videos), and the first and second lens groups 121, 122 are respectively disposed on the upper side 111 of the circuit substrate 11 and are electrically connected. In a specific implementation, the second lens group 122 can be a complementary metal oxide semiconductor (CMOS) lens or an infrared lens.

The light source unit 13 is provided with an invisible light-emitting element 131 and an indicator light-emitting element 133 , and the invisible light-emitting element 131 is represented as an infrared light-emitting diode (IRLED) in this embodiment, which is used as a supplementary light The light source, the indicating light-emitting element 133 is a light-emitting diode (such as a red light-emitting diode or a white light-emitting diode or a multi-color light-emitting diode). The indicator light-emitting element 133 located on the upper side 111 of the circuit substrate 11 is adjacent to the invisible light-emitting element 131 . The invisible light emitting element 131 is provided with a base 1311 and a lens 1312 on the base 1311. The lens 1312 has a light-emitting surface 1313 for projecting an invisible light source (eg, an infrared light source).

The connecting body 14 is correspondingly disposed above the light source unit 13 , and the connecting body 14 is represented as an opaque soft gasket in this embodiment, such as opaque soft rubber or other opaque soft materials (such as opaque soft plastic), but not limited thereto. In a specific implementation, the connecting body 14 can also be an opaque rigid gasket with the function of protecting and shielding the appearance, such as opaque metal or other opaque rigid materials (such as opaque rigid rubber). The connecting body 14 has a first connecting portion 141, a second connecting portion 142, a third connecting portion 143 and an opening 148. The first, second and third connecting portions 141, 142 and 143 are provided in the corresponding At the position of the connecting body 14 of the invisible light emitting element 131 and the first and second lens groups 121 and 122 , the first connecting portion 141 is provided with a first open end 1411 and a pair of second open ends corresponding to the first open end 1411 1412 , in this embodiment, the first open end 1411 extends outward from the connecting body 14 and abuts on the base 1311 of the invisible light emitting element 131 , so that the first connecting portion 141 is separated from the invisible light emitting element 131 . The base 1311 begins to surround the top of the invisible light emitting element 131 , and the first and second open ends 1411 and 1412 together define a first light source channel 145 , and the lens 1312 of the invisible light emitting element 131 is located in the first light source channel 145 and the light emitting surface 1313 of the lens 1312 faces the second open end 1412, when the invisible light emitting element 131 projects the infrared light source, the light emitting surface 1313 of the invisible light emitting element 131 in the first light source channel 145 projects The infrared rays will be irradiated on the corresponding object to be measured (such as the user's face) through the second open end 1412 .

The second connecting portion 142 is adjacent to the first connecting portion 141 , and the second connecting portion 142 has a third open end 1421 and a fourth open end 1422 , and the third open end 1421 extends upward from the connecting body 14 . The third open end 1421 and the corresponding fourth open end 1422 jointly define a second light source channel 146 , a lens of the first lens group 121 extending outward and abutting on a lens base 1213 of the first lens group 121 . 1211 is located in the second light source channel 146 and faces the fourth open end 1422, so that the infrared rays reflected from the object to be tested (ie the user's face) will enter the second light source channel through the fourth open end 1422 146 is received by the first lens group 121 . The third connecting portion 143 is adjacent to the second connecting portion 142 , the third connecting portion 143 has a fifth open end 1431 and a pair of sixth open ends 1432 corresponding to the fifth open end 1431 , the fifth open end 1431 The fifth and sixth open ends 1431 and 1432 jointly define a third light source channel 147, and the second lens group 122 A lens 1221 is located in the third light source channel 147 and faces the sixth open end 1432, so that the second lens group 122 is used to capture (or capture) color images (such as people) through the sixth open end 1432 images of faces or outside peripheral images).

In one embodiment, the first open end 1411 of the first connecting portion 141 extends outward from the connecting body 14 and abuts against the upper side 111 of the circuit substrate 11 adjacent to the base, so that the entire invisible light emitting element 131 is formed. (including the lens 1312 and the base 1311 ) is located in the first light source channel 145 , and the third open end 1421 of the second connecting portion 142 extends outward from the connecting body 14 and abuts against the adjacent first lens group 121 On the upper side 111 of the circuit board 11 of the lens base 1213 , the fifth open end 1431 of the third connecting portion 143 extends outward from the connecting body 14 and abuts against the circuit of the lens base 1223 adjacent to the second lens group 122 On the upper side 111 of the substrate 11 , the first and second lens groups 121 and 122 are located in the second and third light source channels 146 and 147 , respectively. In another embodiment, the second connecting portion 142 of the connecting body 14 is disposed between the lens 1211 of the first lens group 121 and a lens protection sheet (not shown) thereon, and the third connecting portion 142 of the connecting body 14 The connecting portion 143 is disposed between the lens 1221 of the second lens group 122 and a lens protection sheet (not shown) thereon.

In an alternative embodiment, the second and third connection parts 142 and 143 can be omitted, and the invisible light emitting element 131 is surrounded and isolated only by the first connection part 141, so that the infrared rays emitted by the invisible light emitting element 131 only emit light. Projecting outward through the second open end 1412 along the first light source channel 145, instead of projecting in the direction of the first and second lens groups 121, 122 and the indicator light-emitting element 133 on the adjacent two sides (or the periphery), thereby It can prevent the infrared light source emitted by the invisible light emitting element 131 from being projected onto the first and second lens groups 121, 122 and the indicator light emitting element 133, so as to prevent the lenses 1211, 1221 in the first and second lens groups 121, 122 from being disturbed by light leakage , so it can effectively prevent image light leakage and improve the efficiency of face recognition.

The opening 148 of the aforementioned connecting body 14 is opened on the connecting body 14 adjacent to the first connecting portion 141 , and the opening 148 corresponds to the indicator light-emitting element 133 , so that a light source projected by a light-emitting surface 1331 of the indicator light-emitting element 133 is projected. Projected outward through the opening 148 for the user to know the indication information. For example, the user can know the power on/off state of the image capture device 1 by whether the light source of the indicator light (ie, the indicator light-emitting element 133 ) is on or off. , or other indication information (for example, the light source of the indicator light is constantly flashing to indicate that the first lens group 121 is in operation. Therefore, the first, second, and third connecting parts 141 , 142 and 143 of the connecting body 14 of the present invention are covered. In accordance with the corresponding invisible light emitting element 131 and the first and second lens groups 121 and 122, the invisible light emitting element 131 and the first and second lens groups 121 and 122 on the circuit substrate 11 are independently surrounded and isolated (or separated). ), and are respectively located in the corresponding first, second, and third light source channels 145, 146, 147, so that the infrared light source emitted by the invisible light emitting element 131 is isolated by the first connecting portion 141 and will not go to the adjacent two sides ( or the surrounding) of the first and second lens groups 121, 122 and the indicator light-emitting element 133 are projected in the direction to effectively prevent light leakage of the image and effectively isolate the light interference between the non-light-emitting element and the indicator light-emitting element 133, and the first The second and third connecting parts 142 and 143 can isolate (or cover) the peripheral shapes (such as petals) of the lenses 1211 and 1221 of the first and second lens groups 121 and 122 from being exposed, so that the The user does not directly see the outer appearance of the lenses 1211 and 1221 as petals, thereby effectively optimizing the outer appearance of the lenses 1211 and 1221 and improving the overall appearance of the image capturing device 1 .

Referring to FIGS. 1 , 2B, 3B and 4 , the image capture device 1 further includes a first sound pickup unit 161 , a second sound pickup unit 162 , a connector 17 and a processor 19 . The sound pickup units 161 , 162 and the connector 17 are disposed on the upper side 111 of the circuit substrate 11 and are electrically connected, and can be used in conjunction with electronic devices. The first sound-receiving unit 161 is provided with a first microphone 1611 and a first light-tight soft gasket 1612. The first light-tight soft gasket 1612 covers the outside of the first microphone 1611. A sound hole of the microphone 1611 is not covered by the first non-transparent soft gasket 1612 , the first non-transparent soft gasket 1612 can protect the first microphone 1611 therein and shield the first microphone 1611's appearance. The second sound-receiving unit 162 is provided with a second microphone 1621 and a second opaque soft gasket 1622. The second opaque flexible gasket 1622 covers the outside of the second microphone 1621. A sound hole of the microphone 1621 is not covered by the second opaque soft gasket 1622, and the second light impermeable soft gasket 1622 can protect the second microphone 1621 therein and shield the second microphone 1621's appearance. In specific implementation, the first and second opaque soft gaskets 1612 and 1622 can be replaced with an opaque rigid gasket, which also has the function of protecting and shielding the appearance, such as opaque metal or other opaque gaskets. Light-hard materials (such as opaque hard rubber).

The connector 17 is a USB connector, a Type-C USB connector, a flexible flat cable connector or a wireless transceiver for connecting the image capturing apparatus 1 to other devices, and in this embodiment, is used for power connected to a port on an electronic device. The processor 19 (eg, a digital signal processor (DSP), an image processor) is electrically connected to the circuit substrate 11 , and the processor 19 in this embodiment is the processor 19 (eg, a digital signal processor) in the electronic device (DSP), image processor), the processor 19 is used to process the received image, signal or other information, for example, the processor 19 receives the infrared image and a preset feature database (such as preset facial features) database) to perform image recognition processing, or the processor 19 performs signal processing according to the signals received by the first and second microphones 1611 and 1621 . In one embodiment, the processor 19 is disposed on the upper side 111 of the circuit substrate 11 and is electrically connected, and is located between the first sound-receiving unit 161 and the second lens group 122 . In another embodiment, the processor 19 is not disposed on the upper side 111 of the circuit substrate 11, and the processor 19 is designed to be electrically connected to the upper side 111 of the circuit substrate 11 through a signal line (eg, a signal flexible flat cable). .

Therefore, through the design of the image capture device 1 of the present invention, it is possible to effectively prevent image light leakage, improve the efficiency and accuracy of face recognition (or recognition), and also effectively improve the overall appearance of the image capture device 1. Effect.

Please refer to FIG. 5A, which is an exploded perspective view of the second embodiment of the present invention; FIG. 5B is a three-dimensional combined schematic view of the second embodiment of the present invention; FIG. 5C is a schematic cross-sectional view of the second embodiment of the present invention; 6 is a schematic exploded perspective view of an alternative embodiment of the present invention, and is supplemented by the formula of FIG. 4 . The structure, link relationship and effect of this embodiment are generally the same as those of the first embodiment, and will not be repeated here. The difference between the two is that the image capture device 1 further includes a shell Body 15, the casing 15 is arranged between the connecting body 14 and the circuit substrate 11, the casing 15 is a metal casing, used to protect the circuit (not shown in the figure) on the circuit substrate 11, indicating light The element 133 , the invisible light emitting element 131 , the first and second lens groups 121 and 122 , the processor 19 and the first sound-receiving unit 161 , and the casing 15 covers the light source unit 13 , the image capturing unit 12 and the The first sound-receiving unit 161 is provided with a through hole. The aforementioned through holes are represented as four through holes in this embodiment. One of the first through holes 151 corresponds to the opening 148 of the connecting body 14 and the indicator light-emitting element 133. The first connecting portion 141 of the body 14 is inserted into the corresponding second through hole 152 and the second and third connecting portions 142 and 143 are inserted into the corresponding third through hole 153 , and the first radio unit 161 is exposed to the corresponding fourth through hole 153 . inside the through hole 154 . Therefore, the corresponding invisible light emitting element 131 and the first and second lens groups 121 and 122 are independently enclosed and isolated by the first, second and third connecting parts 141 , 142 and 143 of the connecting body 14 , so as to effectively prevent the light source from being trapped in the casing. There is a problem of image refraction on the inner side of 15 to the lens, and a problem of light source scattering on the housing 15 .

In one embodiment, the casing 15 can be a casing 15 made of plastic material, and the casing 15 and the connecting body 14 can be integrally formed by an injection molding method to form a casing 15 having the connecting body 14 , so that the The connecting body 14 is a part of the housing 15 itself.

In an alternative embodiment, as shown in FIG. 6 , the image capturing apparatus 1 further includes a heat dissipation unit 20 , a heat dissipation base 21 and a plurality of conductive pads 22 , and the lower side 112 of the circuit substrate 11 is attached to the heat dissipation unit 20 . On the heat dissipation unit 20 , the heat dissipation unit 20 is represented as a solid metal sheet with high thermal conductivity in this alternative embodiment, and the heat dissipation unit 20 can be a vapor chamber, a thin heat pipe or a hot plate in specific implementation. The heat dissipation unit 20 has a heat absorption surface 201 and a heat dissipation surface 202 . The heat absorption surface 201 is attached to the lower side 112 facing the circuit substrate 11 for absorbing heat generated on the circuit substrate 11 . The heat dissipation base 21 is connected to the circuit substrate 11 , the heat dissipation unit 20 and the plurality of conductive pads 22 are located between the circuit substrate 11 and the heat dissipation base 21 , and the heat dissipation surface 202 of the heat dissipation unit 20 is connected to the heat dissipation base 21 . An upper surface of the heat dissipation base 21 is attached to each other, so that the heat dissipation surface 202 of the heat dissipation unit 20 conducts the received heat to the heat dissipation base 21 to quickly dissipate the heat outward.

Claims (17)

1. An image capturing apparatus, comprising:

a circuit substrate having an upper side and a lower side;

an image capturing unit having a first lens set and a second lens set, the first and second lens sets being disposed on the upper side of the circuit substrate and electrically connected to each other;

the light source unit is provided with an invisible light emitting element which is arranged on the upper side of the circuit substrate and is electrically connected with the circuit substrate; and

the connecting body is correspondingly arranged above the light source unit and provided with a first connecting part, the first connecting part is provided with a first open end and a second open end corresponding to the first open end, the first open end is abutted against the invisible light emitting element or the upper side of the circuit substrate adjacent to the invisible light emitting element, the first open end and the second open end jointly define a first light source channel, and the invisible light emitting element is positioned in the first light source channel.

2. The image capturing apparatus of claim 1, wherein the invisible light emitting device has a base and a lens disposed on the base, the first open end extends outward from the connector to abut against the base, the lens is disposed in the first light source channel, and a light emitting surface of the lens faces the second open end.

3. The image capturing apparatus as claimed in claim 1, wherein the invisible light emitting device has a base and a lens disposed on the base, the first open end extends outward from the connecting body to abut against an upper side of the circuit board adjacent to the base, the lens and the base are disposed in the first light source channel, and a light emitting surface of the lens faces the second open end.

4. The image capturing apparatus of claim 1, wherein the connector has an opening formed therein adjacent to the first connector.

5. The image capturing apparatus as claimed in claim 4, wherein the light source unit further includes an indicating light emitting device disposed on the upper side of the circuit board and adjacent to the invisible light emitting device, and a light emitting surface of the indicating light emitting device faces the opening.

6. The image capturing apparatus as claimed in claim 1, wherein the connecting body has a second connecting portion, the second connecting portion is disposed on the connecting body corresponding to the first lens group, the second connecting portion has a third open end and a fourth open end, the third open end extends outward from the connecting body and abuts against the first lens group, the third open end and the fourth open end define a second light source channel, and a lens of the first lens group is disposed in the second light source channel and faces the fourth open end.

7. The image capturing apparatus as claimed in claim 6, wherein the connecting body has a third connecting portion disposed thereon and having a fifth open end and a sixth open end corresponding to the fifth open end, the fifth open end extending outwardly from the connecting body and abutting against the second lens group, the fifth and sixth open ends defining a third light source channel, a lens of the second lens group being disposed in the third light source channel and facing the sixth open end.

8. The image capturing apparatus of claim 7, further comprising a housing, a first sound receiving unit, a second sound receiving unit and a connector, wherein the first and second sound receiving units and the connector are disposed on the upper side of the circuit board and electrically connected to each other, the housing is disposed between the connector and the circuit board, and a through hole is disposed at a position of the housing corresponding to the light source unit, the image capturing unit and the first sound receiving unit, the first sound receiving unit is exposed in one of the through holes corresponding to the housing, and the first, second and third connecting portions are inserted in the other two through holes corresponding to the housing.

9. The image capturing apparatus of claim 1, further comprising a heat dissipating unit, wherein the lower side of the circuit substrate is attached to the heat dissipating unit, the heat dissipating unit has a heat absorbing surface and a heat dissipating surface, and the heat absorbing surface is attached to the lower side of the circuit substrate in contact therewith.

10. The image capturing apparatus of claim 9, further comprising a heat sink base and a plurality of conductive pads, wherein the heat sink base is connected to the circuit substrate, the heat sink unit and the plurality of conductive pads are disposed between the circuit substrate and the heat sink base, and a heat dissipating surface of the heat sink unit is attached to an upper surface of the heat sink base.

11. The image capturing apparatus of claim 1, further comprising a processor electrically connected to the circuit substrate.

12. The image capturing apparatus of claim 1, wherein the circuit substrate is a flexible printed circuit board or a rigid printed circuit board, and the connector is an opaque flexible gasket or an opaque rigid gasket.

13. The image capturing apparatus of claim 1, wherein the first lens group is an infrared lens and the second lens group is a CCD lens.

14. The image capturing apparatus of claim 5, wherein the invisible light emitting device is an infrared light emitting diode and the indicator light emitting device is a light emitting diode.

15. The image capturing apparatus as claimed in claim 8, wherein the first sound receiving unit has a first microphone and a first opaque soft gasket, the first opaque soft gasket covers an outer side of the first microphone, and a sound hole of the first microphone is not covered by the first opaque soft gasket.

16. The image capturing apparatus as claimed in claim 15, wherein the second sound receiving unit has a second microphone and a second opaque soft gasket, the second opaque soft gasket covers an outer side of the second microphone, and a sound hole of the second microphone is not covered by the second opaque soft gasket.

17. The image capturing apparatus of claim 8, wherein the connector is a USB connector, a C-type USB connector, a flexible flat cable connector, or a wireless transceiver.

Images