CN209733940U - Oral cavity observer based on infrared distance measurement - Google Patents
Oral cavity observer based on infrared distance measurement Download PDFInfo
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- CN209733940U CN209733940U CN201920040450.1U CN201920040450U CN209733940U CN 209733940 U CN209733940 U CN 209733940U CN 201920040450 U CN201920040450 U CN 201920040450U CN 209733940 U CN209733940 U CN 209733940U
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Abstract
the utility model discloses an oral cavity visualizer based on infrared distance measurement. The VCM voice coil motor comprises a camera shooting handle and a VCM voice coil motor; a near-focus VCM zoom lens and a far-focus VCM zoom lens are arranged on the handle head; a CMOS image sensor is arranged in the camera handle, and an image capturing button is arranged on the camera handle; the near-focus VCM zoom lens and the far-focus VCM zoom lens are both connected with the CMOS image sensor; a mainboard with image acquisition, processing and transmission functions is also arranged in the camera shooting handle; the CMOS image sensor and the image capturing button are connected with the main board; an infrared distance measuring sensor is additionally arranged beside the near-focus VCM zoom lens and the far-focus VCM zoom lens and is connected with a main board, and a zoom lens selection functional module is additionally arranged on the main board. This oral cavity visualizer carries out infrared range finding through increasing infrared ranging sensor, selects effectual zoom requirement, selects the zoom that can reach again to reach accurate zoom demand.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, a oral cavity visualizer based on infrared range finding is related to.
Background
The digital oral cavity observation instrument (oral cavity endoscope) is used for local photography, examination and diagnosis of oral cavity, and has a camera shooting handle with the largest visual angle, and a smooth and small handle head at the front end of the camera shooting handle can easily go deep into the oral cavity of a patient, thereby helping to detect the decayed teeth of the occlusal part or the adjacent surface of the oral cavity of the patient, even the decayed teeth in the initial stage ignored by X-rays. It brings brand-new operational convenience and comfort to dentists and patients.
The digital oral cavity observation instrument is internally provided with a double-key image capturing button, the imaging of the digital oral cavity observation instrument is realized by a CMOS image sensor, the digital oral cavity observation instrument is generally provided with a USB interface, only any computer with the USB interface is connected with the digital oral cavity observation instrument, the proper angle (of the part to be shot) is found by using the full dynamic image searching function of an endoscope, and then the image capturing button is pressed, so that an ideal image can be obtained, and the maximum effective pixel of 130M can be captured.
However, most of the existing digital oral cavity observers adopt a fixed focus mode (focus range: 8-40mm), the focus performance is not very good, when the patient opens the oral cavity, the selection of the focus position is judged by a CMOS image SENSOR, the focus position may be front teeth, rear teeth and tongue, the focus may be inaccurate, or the possibility of continuous refocusing may occur.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides one kind and focuses the accuracy, can not appear constantly refocusing the oral cavity visualizer based on infrared range finding possibility. The utility model discloses in focus through infrared light spot range finding, can solve among the prior art and focus inaccurately, or the problem of the continuous possibility of focusing again easily appears.
The technical scheme of the utility model as follows:
An oral cavity observation instrument based on infrared distance measurement comprises a camera shooting handle, a focusing lens cone, a VCM voice coil motor and a base support; the camera shooting handle and the VCM voice coil motor are both fixed on the base support; a near-focus VCM zoom lens and a far-focus VCM zoom lens are arranged on a handle head at the front end of the camera handle; the VCM voice coil motor is connected with the focusing lens barrel and can drive the focusing lens barrel to move; the near-focus VCM zoom lens and the far-focus VCM zoom lens are connected with the focusing lens barrel; a CMOS image sensor is arranged in the camera handle, and an image capturing button is arranged on the camera handle; the near-focus VCM zoom lens and the far-focus VCM zoom lens are both connected with the CMOS image sensor; the near-focus VCM zoom lens and the far-focus VCM zoom lens are both connected with the image capturing button; the camera handle of the oral cavity observation instrument is also internally provided with a main board with image acquisition, processing and transmission functions; the CMOS image sensor is connected with the mainboard; the image capturing button is connected with the main board; an infrared distance measuring sensor is additionally arranged beside the near-focus VCM zoom lens and the far-focus VCM zoom lens on a handle head at the front end of the camera shooting handle and is connected with the main board; the main board is additionally provided with a zoom lens selection functional module which has the function of judging which VCM zoom lens is used for shooting according to the specific working distance measured by the infrared distance measuring sensor.
Furthermore, the main board comprises a central processing unit, an image processing module, a display output module and a zoom lens selection function module; the image processing module and the zoom lens selection function module are connected with the central processing unit; the display output module is connected with the image processing module; the CMOS image sensor is respectively connected with the central processing unit on the mainboard and the signal input port of the image processing module; the image capturing button is respectively connected with a central processing unit on the mainboard and a signal output port of the image processing module; the added infrared distance measuring sensor is connected with a central processing unit on the mainboard and a signal input port of the zoom lens selection functional module; the VCM voice coil motor is fixed on the camera shooting handle base support; the VCM voice coil motor is connected with the focusing lens barrel connected with the VCM zoom lens and drives the focusing lens barrel and the VCM zoom lens to move; and the signal output port of the zoom lens selection functional module is connected with the VCM voice coil motor.
Furthermore, the near-focus VCM zoom lens is a near-focus VCM zoom lens suitable for a working distance of 50mm to infinity; the far-focus VCM zoom lens is suitable for a working distance of 1-50 mm.
Furthermore, the zoom lens selection functional module is a VCM voice coil motor driving chip; the model of the VCM voice coil motor driving chip is FP 5510.
Furthermore, the working current of the VCM voice coil motor is 24 mA-74 mA, and the moving range of the VCM zoom lens is 0-0.22 MM.
Further, the image processing module (image processing chip) is an image sensor photosensitive chip, and the model of the image sensor photosensitive chip is OV9734-H16A or OV 05640-A71A.
Furthermore, the oral cavity observation instrument is provided with a USB interface connected with the main board; the oral cavity observation instrument can be connected with the display through a USB interface.
Furthermore, the USB interface is connected with a display output module on the mainboard; the display is connected with the display output module on the mainboard through the USB interface.
Further, the image capture button is a double-key image capture button.
Further, the CMOS image sensor is an 1/4-inch industrial grade CMOS image sensor.
The utility model has the advantages that:
The utility model discloses an oral cavity visualizer based on infrared range finding carries out infrared range finding through increasing infrared ranging sensor, selects effectual zooming requirement, selects the zoom that can reach again to reach accurate demand of zooming. The principle is as follows: the infrared distance measuring sensor is used for measuring distance, the working distance managed by each VCM zoom lens is different, and the specific working distance measured by infrared light and electricity emitted by the infrared distance measuring sensor is used for judging which VCM zoom lens is used for shooting.
The utility model discloses an oral cavity visualizer based on infrared range finding focuses the accuracy, the possibility of constantly focusing again can not appear. The utility model discloses in focus through infrared light spot range finding, it is inaccurate to focus among the prior art to have solved, or the problem of the continuous possibility of focusing again easily appears.
Drawings
Fig. 1 is a schematic view of the external structure of an oral cavity observation instrument based on infrared distance measurement of the present invention;
FIG. 2 is a schematic structural view of the oral cavity viewer of the present invention with the upper cover removed and the inside visible;
Fig. 3 is an exploded view of the zoom function of the oral cavity viewer of the present invention.
In the figure: 1. the device comprises a near-focus VCM zoom lens 2, a far-focus VCM zoom lens 3, a CMOS image sensor 4, an image capturing button 5, an infrared distance measuring sensor 6, a USB interface 7, a mainboard 8, an image processing chip 9, a VCM voice coil motor driving chip 10, a VCM voice coil motor 11, a camera shooting handle base support 12, a focusing lens barrel 13, a display output module 14, a central processing unit
Detailed Description
the present invention will be further described with reference to the accompanying drawings and examples.
Examples
as shown in fig. 1 and 2, the utility model relates to an oral cavity observation instrument based on infrared distance measurement, which comprises a camera handle with the largest visual angle, wherein two VCM zoom lenses are arranged on the handle head at the front end of the camera handle, and the working distances managed by each VCM zoom lens are different, one of the two VCM zoom lenses is a near-focus VCM zoom lens 1 (suitable for a working distance of 50mm to infinity), and the other is a far-focus VCM zoom lens 2 (suitable for a working distance of 1 mm to 50 mm); a CMOS image sensor 3 is arranged in the camera handle, and an image capturing button 4 is arranged on the camera handle; the two VCM zoom lenses are connected with the CMOS image sensor 3; the two VCM zoom lenses are connected with the image capturing button 4; a main board 7 with image acquisition, processing and transmission functions is also arranged beside the image capturing button 4 on the camera handle; the CMOS image sensor 3 is connected with the mainboard 7; the image capturing button 4 is connected with the main board 7; an infrared distance measuring sensor 5 is additionally arranged beside the two VCM zoom lenses on a handle head at the front end of the camera shooting handle, and the additionally arranged infrared distance measuring sensor 5 is connected with a main board 7; the main board 7 is provided with a zoom lens selection function module having a function of determining which VCM zoom lens is used for image pickup based on a specific working distance measured by the infrared distance measuring sensor.
The oral cavity observation instrument is provided with a USB interface 6, and the USB interface 6 is connected with a mainboard 7; the oral cavity observation instrument can be connected with a display through a USB interface 6.
The image capture button 4 is a double-key image capture button. The CMOS image sensor 3 is an 1/4-inch industrial-grade CMOS image sensor.
The main board 7 comprises a central processing unit 14(CPU), an image processing module (image processing chip 8), a display output module 13, and a zoom lens selection function module (VCM voice coil motor driving chip 9); the image processing module (image processing chip 8) and the zoom lens selection function module image (VCM voice coil motor driving chip 9) are connected with the central processing unit 14; the display output module 13 is connected with the image processing module (image processing chip 8); the CMOS image sensor 3 is respectively connected with a central processing unit 14 on the mainboard and a signal input port of an image processing module (an image processing chip 8); the image capturing button 4 is respectively connected with a central processing unit 14 on the mainboard and a signal output port of an image processing module (an image processing chip 8); the added infrared distance measuring sensor 5 is connected with a central processing unit 14 on the mainboard and a signal input port of a zoom lens selection function module (VCM voice coil motor driving chip 9); the USB interface 6 is connected with a display output module 13 on the mainboard; the display is connected with a display output module 13 on the mainboard through a USB interface 6.
As shown in fig. 3, the oral cavity observation instrument further includes a focusing lens barrel 12, a VCM voice coil motor 10, and a camera handle base support 11; the camera shooting handle and the VCM voice coil motor 10 are both fixed on the camera shooting handle base support 11; the VCM voice coil motor 10 is connected to the focusing barrel 12, the zoom lens (including the near focus VCM zoom lens 1 and the far focus VCM zoom lens 2) is fixedly connected to the focusing barrel 12, and the VCM voice coil motor 10 can drive the focusing barrel 12 and the zoom lens to move.
The utility model provides a mainboard 7 not only has the image acquisition, handles, and the function of transmission (through the image that two VCM zoom lenses of CMOS image sensor collection shot, carries out image processing through central processing unit and image processing module on the mainboard, and the rethread shows output module and exports on the display), has moreover and to judge according to the specific working distance that infrared ranging sensor surveyed and carry out the function of making a video recording with which VCM zoom lens. That is to say, the utility model provides a mainboard has increased one on the basis of the mainboard that has image acquisition, processing and transmission function now and has had and to judge which VCM zoom lens carries out the zoom selection function module of making a video recording with specific working distance that infrared ray range finding sensor surveyed.
The zoom lens selection functional module is a VCM voice coil motor driving chip (VCM Driver IC); the model of the VCM voice coil motor driving chip is FP5510, and the VCM voice coil motor driving chip is commercially available.
As shown in fig. 3, the VCM voice coil motor driver chip 9(FP5510) provided on the main board is electrically connected to the VCM voice coil motor 10, and can drive the VCM voice coil motor. The VCM voice coil motor 10 is fixed on the camera shooting handle base support 11; the VCM voice coil motor 10 is connected to a focus lens barrel 12 connected to the VCM zoom lens, and drives the focus lens barrel and the VCM zoom lens to move. The VCM voice coil motor driving chip FP5510 is an indispensable part of the camera module for implementing the auto focus function. The VCM zoom lens (VCM moving lens) is controlled by providing a small current change, so the VCM Driver IC (FP5510) is needed, which is controlled by I2C, and does not consider how the AF (auto focus) program is written, when the AF (auto focus) finds the focus step number, the I2C is used to let the Driver IC output the current to the VCM voice coil motor, which then moves the VCM zoom lens (lens) to the actual focus position. The working current of the VCM voice coil motor is 24 mA-74 mA, and the moving range of the VCM zoom lens is 0-0.22 MM.
the image processing module (image processing chip 8) is an image sensor photosensitive chip, and the model of the image sensor photosensitive chip can be OV9734-H16A or OV05640-A71A and the like.
The utility model discloses a characteristics of oral cavity visualizer based on infrared range finding: this oral cavity visualizer carries out infrared range finding through increasing infrared ranging sensor, selects effectual zoom requirement, selects the zoom that can reach again to reach accurate zoom demand.
The utility model discloses an oral cavity visualizer based on infrared range finding's theory of operation as follows:
The two VCM zoom lenses are controlled by the image capture button 4 to shoot images, the images shot by the two VCM zoom lenses are transmitted to the central processing unit and the image processing module on the main board 7 through the CMOS image sensor 3, the images are processed through the central processing unit and the image processing module on the main board, and then the images are output to the display through the display output module to be displayed.
The infrared photoelectric function sent by the infrared distance measuring sensor is distance measurement, the working distance managed by each VCM zoom lens is different, the working distance of the far-focus VCM zoom lens 2 tube is 1-50 mm, and the working distance of the near-focus VCM zoom lens 1 tube is 50-infinity. After infrared ranging sensor 5 sends out infrared photoelectric detection and detects specific working distance, convey to central processing unit and zoom lens on the mainboard and select functional module, zoom lens select functional module judges which VCM zoom lens to make a video recording through the specific working distance that infrared ranging sensor 5 measured.
Claims (10)
1. An oral cavity observation instrument based on infrared distance measurement is characterized by comprising a camera shooting handle, a VCM voice coil motor, a focusing lens cone and a base support; the camera shooting handle and the VCM voice coil motor are both fixed on the base support; a near-focus VCM zoom lens and a far-focus VCM zoom lens are arranged on a handle head at the front end of the camera handle; the VCM voice coil motor is connected with the focusing lens barrel and can drive the focusing lens barrel to move; the near-focus VCM zoom lens and the far-focus VCM zoom lens are connected with the focusing lens barrel; a CMOS image sensor is arranged in the camera handle, and an image capturing button is arranged on the camera handle; the near-focus VCM zoom lens and the far-focus VCM zoom lens are both connected with the CMOS image sensor; the near-focus VCM zoom lens and the far-focus VCM zoom lens are both connected with the image capturing button; the CMOS image sensor is connected with the image capturing button; a mainboard with image acquisition, processing and transmission functions is also arranged in the camera shooting handle; the CMOS image sensor is connected with the mainboard; the image capturing button is connected with the main board; an infrared distance measuring sensor is additionally arranged beside the near-focus VCM zoom lens and the far-focus VCM zoom lens on a handle head at the front end of the camera shooting handle and is connected with the main board; the main board is additionally provided with a zoom lens selection functional module which has the function of judging which VCM zoom lens is used for shooting according to the specific working distance measured by the infrared distance measuring sensor.
2. The infrared distance measuring-based oral cavity viewer of claim 1, wherein the main board comprises a central processing unit, an image processing module, a display output module, and a zoom lens selection function module; the image processing module and the zoom lens selection function module are connected with the central processing unit; the display output module is connected with the image processing module; the CMOS image sensor is respectively connected with the central processing unit on the mainboard and the signal input port of the image processing module; the image capturing button is respectively connected with a central processing unit on the mainboard and a signal output port of the image processing module; the added infrared distance measuring sensor is connected with the central processing unit on the mainboard and the signal input port of the zoom lens selection functional module.
3. The infrared distance measurement-based oral cavity observer according to claim 1 or 2, wherein the near-focus VCM zoom lens is a near-focus VCM zoom lens suitable for a working distance of 50mm to infinity; the far-focus VCM zoom lens is suitable for a working distance of 1-50 mm.
4. The infrared distance measurement-based oral cavity viewer of claim 1 or 2, wherein the zoom lens selection function module is a VCM voice coil motor driver chip; the model of the VCM voice coil motor driving chip is FP 5510.
5. the infrared distance measurement-based oral cavity observer according to claim 4, wherein the VCM voice coil motor has an operating current of 24 mA-74 mA, and the VCM zoom lens has a moving range of 0-0.22 MM.
6. The infrared range finding based oral cavity viewer of claim 2 wherein the image processing module is an image sensor photo chip having a model number of OV9734-H16A or OV05640-a 71A.
7. The infrared range finding based oral cavity viewer of claim 1 or 2, with a USB interface to a motherboard; the oral cavity observation instrument can be connected with the display through a USB interface.
8. The infrared range finding based oral cavity viewer of claim 7, wherein the USB interface is connected to a display output module on the motherboard; the display is connected with the display output module on the mainboard through the USB interface.
9. The infrared range finding based oral viewer of claim 1 or 2 in which the image capture button is a two-button image capture button.
10. The infrared range finding based oral viewer of claims 1 or 2 in which the CMOS image sensor is an 1/4 inch industrial grade CMOS image sensor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920040450.1U CN209733940U (en) | 2019-01-10 | 2019-01-10 | Oral cavity observer based on infrared distance measurement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920040450.1U CN209733940U (en) | 2019-01-10 | 2019-01-10 | Oral cavity observer based on infrared distance measurement |
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| CN209733940U true CN209733940U (en) | 2019-12-06 |
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| CN201920040450.1U Active CN209733940U (en) | 2019-01-10 | 2019-01-10 | Oral cavity observer based on infrared distance measurement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11690506B2 (en) | 2020-07-06 | 2023-07-04 | Pavisus As | Video laryngoscope apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11690506B2 (en) | 2020-07-06 | 2023-07-04 | Pavisus As | Video laryngoscope apparatus |
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