Patent Application
20220210298
This application claims foreign priority of Chinese Patent Application No. 202011590826.X, filed on Dec. 29, 2020 in the China National Intellectual Property Administration, the disclosures of all of which are hereby incorporated by reference.
The present disclosure relates to the field of optical technologies, and in particular to a camera module and an endoscope.
Endoscopes are widely used in the medical field, industrial field, etc. Endoscope use environment is generally harsh, module with a year time basically have problems, and light source with a year time will decay. At present, the light source in the endoscope module on the market needs to be disassembled when replacing the whole machine, resulting in a particularly troublesome endoscope maintenance and repair.
Embodiments of the present disclosure provide a camera module and an endoscope.
In a first aspect, a camera module is provided, including:
a connecting base, including a first connecting member and a first circuit board; wherein the first circuit board is installed in the first connecting member; and
a camera, including a housing, a second circuit board, a light source assembly, and a lens assembly; wherein the second circuit board, the light source assembly, and the lens assembly are respectively installed in the housing; the housing is removably connected to the first connecting member; the first circuit board and the second circuit board are electrically connected to each other.
In some embodiments, the second circuit board includes a first board portion, a second board portion, and a third board portion connected in sequence; the first board portion is disposed at an end of the housing facing away from the first connecting member, and the third board portion is disposed on the other end of the housing;
the light source assembly is disposed on a side of the first board portion facing away from the second board portion; the lens assembly is disposed between the first board portion and the second board portion.
In some embodiments, the first board portion is arranged with a heat sink on a side facing away from the light source assembly, the heat sink abutting against the lens assembly; and/or
the second board portion is arranged with a heat sink on a side facing away from the lens assembly, the heat sink abutting against an inner wall of the housing.
In some embodiments, wherein the light source assembly includes a plurality of lamp beads annularly distributed on the first board portion;
the housing defines a light-transmitting window, and the plurality of lamp beads face the light-transmitting window.
In some embodiments, the lens assembly includes an optical lens and an image sensor; the image sensor is disposed at the second board portion; an end of the optical lens is connected to the image sensor;
the first board portion defines a through hole; the other end of the optical lens passes through the through hole and faces the light-transmitting window.
In some embodiments, the housing includes a fixing member and a second connecting member; an end of the second connecting member is sleeved on the fixing member, and the other end of the second connecting member is sleeved on the first connecting member;
an inside of the fixing member defines an installation cavity, and the second circuit board is installed in the installation cavity.
In some embodiments, the fixing member defines a clamping groove, and an end of the second connecting member facing away from the first connecting member is arranged with a clamping portion; the clamping portion is disposed in the clamping groove; an end of the clamping portion facing the first connecting member abuts against a wall of the clamping groove;
the housing further includes a casing; the casing is sleeved on an end of the fixing member facing away from the first connecting member, and the casing abuts against the other end of the clamping portion.
In some embodiments, the camera module further includes a spring pin assembly disposed in the housing and connected between the first circuit board and the second circuit board.
In some embodiments, the spring pin assembly includes a spring pin base and a plurality of spring pins; the plurality of spring pins are installed on the spring pin base;
the first circuit board is arranged with a plurality of metal contacts; the plurality of spring pins abut against the plurality of metal contacts.
In a second aspect, an endoscope is provided, including:
a host; and
a camera module according to any one of the above embodiments; wherein the camera module is further arranged with a signal line connected to the host.
One or more embodiments are exemplified by the accompanying drawings. These exemplified descriptions do not constitute a limitation on the embodiments. The elements with the same reference numerals in the drawings are denoted as similar elements, and the figures in the accompanying drawings do not constitute a limitation of scale unless specifically stated.
To facilitate the understanding of the present disclosure, the present disclosure will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as being “fixed to” another element, it may be directly on the other element, or there may be one or more elements in between. When an element is expressed as being “connected to” another element, it may be directly connected to the other element, or there may be one or more intervening elements in between. The terms “vertical”, “horizontal”, “left”, “right”, “inner”, “outer” and similar expressions used in this specification are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field of the present disclosure. The terms used in the description of the present disclosure are only for the purpose of describing specific embodiments and not to limit the present disclosure. The term “and/or” used in this specification includes any and all combinations of one or more related listed items.
In addition, the technical features involved in the different embodiments of the present disclosure described below can be combined with each other as long as they do not conflict with each other.
Referring to
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It can be understood that in some other embodiments, the shape of the first connecting member 11 may be set according to actual needs, such as a square tube, a triangular tube, an elliptical tube, etc., just to be able to meet the installation of the first circuit board 12 and the signal line 13.
The first circuit board 12 may be plate-shaped. A side of the first circuit board 12 facing away from the camera 20 abuts on the stepped surface 114, and the other side of the first circuit board 12 is arranged with a plurality of metal contacts 120 configured for electrical connection with the camera 20. The shape of the first circuit board 12 matches the shape of the first receiving hole 110, and an outer edge of the first circuit board 12 abuts an inner wall of the first receiving hole 110 to facilitate installation of the first circuit board 12.
Referring to
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The end of the first fixing portion 210 facing away from the second fixing portion 212 is further arranged with a positioning inner ring 214. The positioning inner ring 214 protrudes from an inner wall of the first fixing portion 210 toward an inner cavity. The positioning inner ring 210 is configured to position the spring pin assembly 25. The inner wall of the first fixing portion 210 is further arranged with a limiting block 215, the limiting block 215 extending from the positioning inner ring 214 in a direction away from the second fixing portion 212. The limiting block 215 is configured to limit the position of the spring pin assembly 25.
An end of the second fixing portion 212 facing the first fixing portion 210 further defines a clamping groove 216 configured to connect with the second connecting member 22. A groove wall at an end of the clamping groove 216 facing the first fixing portion 212 is an abutting wall configured to limit the position of the second connecting member 22. An end of the second fixing portion 212 facing away from the first fixing portion 210 defines a light-transmitting window 218 communicating the installation cavity with an outside.
The second connecting member 22 may be a hollow round tube, and an end of the second connecting member 22 facing the connecting base 10 is arranged with an internal thread. The second connecting member 22 is sleeved on the first connecting member 11. The internal thread of the second connecting member 22 matches the external thread of the first connecting member 11, such that the second connecting member 22 is fixed to the first connecting member 11. An end of the second connecting member 22 facing away from the connecting base 10 is arranged with a clamping portion 220, and the clamping portion 220 protrudes from an inner wall of the second connecting member 22. An end of the second connecting member 22 facing away from the connecting base 10 is sleeved on the second fixing portion 212 of the fixing member 21. The clamping portion 220 is disposed in the clamping groove 216. An end of the clamping portion 220 facing the first connecting member 11 abuts against the abutting wall.
It can be understood that, in some other embodiments, the connection mode of the second connecting member 22 and the first connecting member 11 may be set according to actual needs, such as a snap connection, a fastener connection, a key connection, etc., just to be able to meet the detachable connection requirement between the first connecting member 11 and the second connecting member 22.
The casing 23 may be a hollow round tube. The casing 23 is sleeved on an end of the second fixing portion 212 facing away from the first fixing portion 210. The casing 23 abuts against an end of the clamping portion 220 of the second connecting member 22 away from the first connecting member 11, such that the second connecting member 22 is axially fixed. A window corresponding to the light-transmitting window 218 is defined at an end of the casing 23 facing away from the second connecting member 22 to ensure that the light-transmitting window 218 communicates with the outside.
Referring to
The first board portion 241 may have an annular plate shape and define a through hole 2410. The light source assembly 26 is arranged on a side of the first board portion 241 facing away from the second board portion 242 and faces the light-transmitting window 218. The emitted light can be transmitted through the light-transmitting window 218 to the outside. The lens assembly 27 is disposed between the first board portion 241 and the second board portion 242, and two ends of the lens assembly 27 are respectively connected to the first board portion 241 and the second board portion 242. An end of the lens assembly 27 passes through the through hole 2410. The third board portion 243 defines a plurality of connecting holes 2430 configured to connect with the spring pin assembly 25.
In some embodiments, the first board portion 241 is arranged with a heat sink 28a on a side facing away from the light source assembly 26, the heat sink 28a abuts against the lens assembly 27, and the heat sink 28a abuts against an inner wall of the fixing member 21. The heat sink 28a can conduct the heat generated during the operation of the light source assembly 26 and the lens assembly 27 to the housing. The second board portion 242 is further arranged with a heat sink 28b on a side facing away from the lens assembly 27, the heat sink 28b abuts against the inner wall of the fixing member 21, and the heat sink 28b can conduct the heat generated during the operation of the lens assembly 27 to the housing.
In some embodiments, the second circuit board 24 may further include a fourth board portion 244, a fifth board portion 245, and a sixth board portion 246 that are sequentially connected. The fourth board portion 244, the fifth board portion 245, and the sixth board portion 246 are sequentially arranged at intervals along the axial direction of the fixing member 21. The fourth board portion 244, the fifth board portion 245, and the sixth board portion 246 are disposed between the second board portion 242 and the third board portion 243. The fourth board portion 244 is connected to the second board portion 242, and the sixth board portion 246 is connected to the third board portion 243. The heat sink 28b is disposed between the second board portion 242 and the fourth board portion 244. A heat sink 28c is further arranged between the fifth board portion 245 and the sixth board portion 246. The heat sink 28c abuts against the inner wall of the fixing member 21 for further dissipating heat for the light source assembly 26 and the lens assembly 27.
In some embodiments, the installation cavity of the fixing member 21 is potted with thermally conductive glue, such that the second circuit board 24 and the fixing member 21 are fixedly connected, and the heat conduction between the second circuit board 24 and the fixing member 21 is increased, which can better dissipate heat for the light source assembly 26 and the lens assembly 27.
The spring pin assembly 25 may include a spring pin base 250 and a plurality of spring pins 252. The plurality of spring pins 252 are installed on the spring pin base 250. A plurality of installation through holes (not shown) are defined on the spring pin base 250. The installation through holes penetrate through two ends of the spring pin base 250 in an axial direction. Each spring pin 252 is installed in a corresponding installation through hole.
The spring pin base 250 is disposed in the first fixing portion 210. An end of the spring pin base 250 abuts the positioning inner ring 214, and the other end of the spring pin base 250 abuts the third board portion 243, such that the spring pin base 250 is fixed along the axial direction of the fixing member 21. An outer wall of the spring pin base 250 defines a limiting groove 2500. The shape of the limiting groove 2500 matches the shape of the limiting block 215, and the limiting block 215 is clamped in the limiting slot 2500, such that the spring pin base 250 is fixed along the axial direction of the fixing member 21.
An end of each spring pin 252 is disposed in one of the plurality of connecting holes 2430 of the third board portion 234, and each spring pin 252 corresponds to one of the connecting holes 2430. The plurality of spring pins 252 are welded and fixed to the third board portion 234. The other end of each spring pin 252 abuts against the plurality of metal contacts 120 of the first circuit board 12, and each spring pin 252 corresponds to one of the metal contacts 120. The spring pins 252 can enable the electrical connection between the first circuit board 12 and the second circuit board 23, and can conduct heat on the second circuit board 23 to the first circuit board 12 for heat dissipation.
The light source assembly 26 may include a plurality of lamp beads 260 annularly distributed on the first board portion 241. The plurality of lamp beads 260 are welded to the first board portion 241 such that the plurality of lamp beads 260 are electrically connected to the second circuit board 24. Light-emitting ends of the plurality of lamp beads 260 face the light-transmitting window 218, and the plurality of lamp beads 260 can emit light toward the outside of the camera 20. In the embodiments, each lamp bead may be a light-emitting diode (LED), and the LED can have any light source wavelength band to meet different requirements.
The lens assembly 27 may include an optical lens 270 and an image sensor 272. An end of the optical lens 270 is connected to the image sensor 272. The other end of the optical lens 270 passes through the through hole 2410 to communicate with the outside. The optical lens 270 is configured to refract and filter light. The image sensor 272 is soldered to the second board portion 242 such that the image sensor 272 is electrically connected to the second circuit board 24. The external light enters through the light-transmitting window 218 and is refracted by the optical lens 270 and transmitted to the image sensor 272. The image sensor 272 generates image information after processing.
The assembly process of the camera module 100 will be briefly described below in conjunction with the drawings.
When the connecting base 10 is assembled, the first circuit board 12 and the signal line 13 are welded first, the signal line 13 passes through the first receiving hole 110 and the second receiving hole 112 in sequence, and the first circuit board 12 is disposed in the first receiving hole 110 and abuts the stepped surface 114.
When the camera 20 is assembled, the second circuit board 24 is bent, and the spring pin assembly 25, the light source assembly 26, and the lens assembly 27 are respectively welded on the second circuit board 24. The second circuit board 24, the spring pin assembly 25, the light source assembly 26, and the lens assembly 27 are installed in the fixing member 21 after assembled. The second connecting member 22 is sleeved on the fixing member 21, and the casing 23 is sleeved on the fixing member 21 and abuts against the second connecting member 22.
When the connecting base 10 is assembled with the camera 20, the second connecting member 22 is sleeved on the first connecting member 11, the second connecting member 22 is rotated to screw with the first connecting member 11 until the second connecting member 22 abuts against the positioning outer ring 116, and the spring pins 252 abut against the metal contacts 120.
Referring to
Finally, it should be noted that the above embodiments are only to illustrate the technical solutions of the present disclosure, not to limit them; under the idea of the present disclosure, the technical features of the above embodiments or different embodiments can also be combined. The steps can be implemented in any order, and there are many other variations of the different aspects of the present disclosure as described above. For the sake of brevity, they are not provided in details; although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions out of the scope of the technical solutions of the various embodiments of the present disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202011590826.X | Dec 2020 | CN | national |
