Image acquisition device and endoscope

Abstract

The utility model relates to the technical field of endoscopes, and discloses an image acquisition device and an endoscope. The light guide window is arranged at the end part of the insertion part; the infrared sensing unit is arranged at the end part of the insertion part, and the infrared sensing unit is used for receiving the infrared light reflected by the target object so as to calculate distance information between the insertion part and the target object; the light guide module comprises a light energy adjusting unit and a light source part, the light energy adjusting unit is electrically connected with the light source part, and the light energy adjusting unit is electrically connected with the infrared induction unit and used for adjusting light energy provided by the light source part according to the distance information. The infrared induction unit is used for receiving infrared light reflected by the target object, so that the distance between the insertion part and the target object can be calculated, the light energy provided by the light source part is adjusted by the light energy adjusting unit according to the calculated distance, the brightness of the light guide window can be adjusted, the light guide window has proper illumination brightness, and the illumination effect of the light guide window is improved. The imaging quality is ensured, and the focus part can be conveniently observed.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to an image acquisition device and an endoscope. Background Art

[0002] Endoscopes are widely used in medical diagnosis. Because endoscopes must be inserted into dark spaces for diagnosis and treatment, the field of view must be illuminated, and the quality of the illumination is crucial to image quality. The divergence angle of an endoscope's illumination lens is typically fixed. As the distance between the lesion and the illumination lens decreases, the area covered by the illumination light becomes smaller, and the light flux reflected from the lesion is too high, easily causing overexposure in the image and hindering observation of the lesion. Utility Model Content

[0003] In view of this, the present invention provides an image acquisition device and an endoscope to solve the problem in the prior art that the endoscopic imaging image is overexposed, which is not conducive to observing the lesion site.

[0004] In the first aspect, the utility model provides an image acquisition device, comprising: an insertion portion; a light guide window, arranged at the end of the insertion portion; an infrared sensing unit, arranged at the end of the insertion portion, the infrared sensing unit being used to receive infrared light reflected by a target object to calculate distance information between the insertion portion and the target object; a light guide module, arranged in the insertion portion and corresponding to the light guide window, the light guide module comprising a light energy adjustment unit and a light source portion, the light energy adjustment unit being electrically connected to the light source portion, the light energy adjustment unit being electrically connected to the infrared sensing unit, and adjusting the light energy provided by the light source portion according to the distance information.

[0005] Beneficial effects: The infrared sensing unit is used to receive the infrared light reflected by the target object, so that the distance between the insertion part and the target object can be calculated. The light energy adjustment unit adjusts the light energy provided by the light source part according to the calculated distance, so that the brightness of the light guide window can be adjusted, so that the light guide window has appropriate lighting brightness, ensuring imaging quality and facilitating observation of the lesion site.

[0006] In some embodiments, the light guide module further includes a transmission portion, which is electrically connected to the light energy adjustment unit and is configured to transmit the light energy adjusted by the light energy adjustment unit to the light guide window.

[0007] Beneficial effect: The light energy of the light source part is adjusted by the light energy adjustment unit and then enters the transmission part, and is then transmitted to the light guide window through the transmission part, thereby realizing the adjustment and transmission of the light energy.

[0008] In some embodiments, the light source portion includes a light guide cone, and the light guide cone is electrically connected to the light energy adjustment unit.

[0009] In some embodiments, the transmission portion includes an optical fiber, and the optical fiber is electrically connected to the light energy adjustment unit.

[0010] In some embodiments, the inserting portion is provided with at least one light guide window.

[0011] In some embodiments, the image acquisition device further includes an objective lens, and the objective lens is disposed at an end of the insertion portion.

[0012] In some embodiments, the image acquisition device is provided with an instrument channel, and the instrument channel is provided through the insertion portion.

[0013] In some embodiments, the image acquisition device further includes a water-gas nozzle, and the water-gas nozzle is disposed at an end portion of the insertion portion.

[0014] In some embodiments, the image acquisition device is provided with a water supply channel, and the water supply channel is provided through the insertion portion to form a water supply outlet at an end portion of the insertion portion.

[0015] In a second aspect, the utility model provides an endoscope, comprising the above-mentioned image acquisition device, the endoscope further comprising an operating part and a scope connector, the operating part and the scope connector being connected via a hose, and the insertion part being connected to the operating part. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic structural diagram of an endoscope according to an embodiment of the present utility model;

[0018] Figure 2 This is a partial cross-sectional structural diagram of a mirror body connector according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the position structure of the light source part, the light energy adjustment unit and the transmission part of an embodiment of the utility model;

[0020] Figure 4 This is a schematic structural diagram of the end portion of the insertion portion of an embodiment of the present utility model.

[0021] Description of reference numerals:

[0022] 1. Insertion part; 2. Light guide window; 3. Infrared sensing unit; 4. Light guide module; 401. Light energy adjustment unit; 402. Light source part; 4021. Light guide cone; 403. Transmission part; 4031. Optical fiber; 6. Objective lens; 7. Instrument channel; 8. Water and gas nozzle; 9. Water outlet; 10. Operation part; 11. Mirror body connector; 12. Hose. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0024] The following combination Figures 1 to 4 , describing the embodiments of the present utility model.

[0025] According to an embodiment of the present invention, on the one hand, an image acquisition device is provided, comprising: an insertion portion 1, a light guide window 2, an infrared sensing unit 3, and a light guide module 4. The light guide window 2 is provided at the end of the insertion portion 1, and the infrared sensing unit 3 is provided at the end of the insertion portion 1. The infrared sensing unit 3 is used to receive infrared light reflected by a target object to calculate the distance information between the insertion portion 1 and the target object. The light guide module 4 is provided in the insertion portion 1 and corresponds to the light guide window 2. The light guide module 4 includes a light energy adjustment unit 401 and a light source portion 402. The light energy adjustment unit 401 is electrically connected to the light source portion 402. The light energy adjustment unit 401 is electrically connected to the infrared sensing unit 3 and adjusts the light energy provided by the light source portion 402 according to the distance information.

[0026] The infrared sensing unit 3 is used to receive the infrared light reflected by the target object, so that the distance between the insertion part 1 and the target object can be calculated. The light energy adjustment unit 401 adjusts the light energy provided by the light source part 402 according to the calculated distance, so as to adjust the brightness of the light guide window 2 so that the light guide window 2 has appropriate lighting brightness, ensures imaging quality, and facilitates observation of the lesion site.

[0027] It should be noted that the light guide module 4 is used to provide light energy to the light guide window 2, so that the light guide window 2 has a certain brightness, thereby illuminating the target object. Furthermore, the light energy adjustment unit 401 can adjust the light energy provided by the light source part 402, thereby adjusting the brightness of the light guide window 2.

[0028] It is worth noting that the end of the insertion portion 1 is the end of the insertion portion 1 that is close to the target object; Figure 1 The end of the insertion portion 1 is also the end away from the operating portion 10 .

[0029] It is worth noting that in related technologies, dimming software is typically used to adjust the brightness level based on the gamma curve of the displayed image. This is slow and requires complex algorithms. In this embodiment, however, the light energy is adjusted directly based on the distance between the insert 1 and the target object, providing a simple adjustment method.

[0030] It should be further explained that, in this embodiment, the time of flight method (TOF) is used to measure the distance between the insertion part 1 and the target object. Specifically, by continuously sending light pulses to the target object, and then using a sensor to receive the light returned from the object, the distance to the target object is obtained by detecting the flight (round trip) time of these emitted and received light pulses. The sensor converts the distance to the target object by calculating the time difference or phase difference between the emission and reflection of the light. The time of flight method has the following advantages: low software complexity, simple design and application; high applicability to both dark and strong light environments; low power consumption, energy saving; applicable to longer detection distances; low cost; and fast response speed.

[0031] It is worth noting that the infrared sensing unit 3 is an infrared light sensor.

[0032] In one embodiment, Figure 2 and Figure 3 As shown, the light guide module 4 further includes a transmission portion 403, which is electrically connected to the light energy adjustment unit 401 and is used to transmit the light energy adjusted by the light energy adjustment unit 401 to the light guide window 2. The light energy of the light source 402 is adjusted by the light energy adjustment unit 401 and then enters the transmission portion 403. Then, it is transmitted to the light guide window 2 via the transmission portion 403, thereby achieving light energy adjustment and transmission.

[0033] It should be noted that the light source unit 402 outputs a predetermined light energy, and the light energy adjustment unit 401 adjusts the predetermined light energy according to the distance between the infrared sensing unit 3 and the target object, and then transmits the adjusted light energy to the transmission unit 403, and then transmits it to the light guide window 2 through the transmission unit 403, so that the light guide window 2 has appropriate brightness.

[0034] In one embodiment, the light energy adjustment unit 401 is an optical switch. The distance between the target object and the insertion portion 1 is linked to the voltage of the optical switch, and the voltage of the optical switch is controlled through logic language. Thus, the voltage of the optical switch is adjusted according to the distance between the target object and the insertion portion 1, thereby adjusting the light energy transmitted by the optical switch to the transmission portion 403 and achieving the purpose of rapid brightness switching.

[0035] It is worth noting that when the infrared sensing unit 3 receives the infrared light reflected by the target object and transmits a signal to the control system, the control system uses the time-of-flight method to calculate the distance between the insertion part 1 and the target object. The control system adjusts the voltage of the optical switch based on the calculated distance, thereby adjusting the light energy input from the light source part 402 to the transmission part 403, thereby achieving the adjustment of the luminous brightness of the light guide window 2.

[0036] It's worth noting that an optical switch is an optical device with one or more selectable transmission ports. Its function is to physically switch or logically operate optical signals within an optical transmission line or integrated optical circuit. Optical switches can switch light beams in time, space, and wavelength, and are widely used in fiber optic testing systems, fiber optic networks, and optical information processing.

[0037] It should be noted that the optical switch can be a mechanical switch, a liquid crystal switch, a MEMS switch, etc.

[0038] In one embodiment, Figure 2 As shown, the light source unit 402 includes a light guide cone 4021, which is electrically connected to the light energy adjustment unit 401. The light guide cone 4021 is made of gemstone and quartz materials, and utilizes the optical properties of gemstone and quartz materials to achieve efficient conduction of light energy and high light efficiency.

[0039] In one embodiment, Figure 2 As shown, the transmission unit 403 includes an optical fiber 4031, which is electrically connected to the light energy adjustment unit 401. The optical fiber 4031 is used to transmit light energy, which has low loss, high transmission speed and strong anti-interference ability.

[0040] In one embodiment, Figure 4 As shown, the inserting portion 1 is provided with at least one light guide window 2. Specifically, in this embodiment, as shown in FIG. Figure 4 As shown, there are two light guide windows 2. It is understandable that in other alternative embodiments, there may be one light guide window 2, or more light guide windows 2, such as three or four, which may be provided according to actual needs.

[0041] It is worth noting that the light source of the endoscope generally includes a light source of two wavelength bands: visible light and infrared light. The infrared light emitted from the light guide window 2 is reflected by the target object and then received by the infrared sensing unit 3.

[0042] In one embodiment, Figure 4 As shown, the image acquisition device further includes an objective lens 6, which is disposed at the end of the insertion portion 1. By disposing the objective lens 6, observation of the target object is achieved.

[0043] In one embodiment, Figure 4 As shown, the image acquisition device is provided with an instrument channel 7, which is arranged through the insertion portion 1. The instrument channel 7 is used to allow surgical forceps and other instruments to enter.

[0044] In one embodiment, Figure 4 As shown, the image acquisition device further includes a water-gas nozzle 8 , which is disposed at the end of the insertion portion 1 .

[0045] In one embodiment, Figure 4 As shown, the image acquisition device is provided with a water supply channel, which is arranged through the insertion portion 1 to form a water supply outlet 9 at the end of the insertion portion 1.

[0046] It is worth noting that the target object can be cleaned by using the water-gas nozzle 8 and the water supply channel to introduce liquid.

[0047] When using the image acquisition device of this embodiment, the insertion part 1 is inserted into the body, and the target object (such as the lesion site) is illuminated through the light guide window 2. When the distance between the insertion part 1 and the target object changes, the infrared light sensor receives the signal of the infrared light reflected by the target object, calculates the distance between the insertion part 1 and the target object, and adjusts the voltage of the optical switch according to the calculated distance, thereby adjusting the light energy input to the transmission part 403, thereby achieving the adjustment of the light brightness of the light guide window 2.

[0048] According to an embodiment of the present invention, on the other hand, an endoscope is provided, comprising the above-mentioned image acquisition device, such as Figure 1 As shown, the endoscope further includes an operating portion 10 and a scope connector 11, which are connected via a hose 12. The insertion portion 1 is connected to the operating portion 10. A light guide cone 4021, an optical switch, and an optical fiber 4031 can be provided corresponding to the scope connector 11, which can be used to connect to external devices.

[0049] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. An image acquisition device, characterized in that: include: Insertion portion (1); A light guide window (2) is arranged at the end of the insertion portion (1); An infrared sensing unit (3) is arranged at the end of the insertion portion (1), and the infrared sensing unit (3) is used to receive infrared light reflected by a target object to calculate distance information between the insertion portion (1) and the target object; A light guide module (4) is arranged in the insertion portion (1) and corresponds to the light guide window (2), the light guide module (4) comprising a light energy adjustment unit (401) and a light source portion (402), the light energy adjustment unit (401) being electrically connected to the light source portion (402), the light energy adjustment unit (401) being electrically connected to the infrared sensing unit (3), and adjusting the light energy provided by the light source portion (402) according to the distance information.

2. The image acquisition device according to claim 1, characterized in that: The light guide module (4) further comprises a transmission part (403), wherein the transmission part (403) is electrically connected to the light energy adjustment unit (401), and the transmission part (403) is used to transmit the light energy adjusted by the light energy adjustment unit (401) to the light guide window (2).

3. The image acquisition device according to claim 2, characterized in that: The light source portion (402) comprises a light guide cone (4021), and the light guide cone (4021) is electrically connected to the light energy adjustment unit (401).

4. The image acquisition device according to claim 2, characterized in that: The transmission part (403) comprises an optical fiber line (4031), and the optical fiber line (4031) is electrically connected to the light energy adjustment unit (401).

5. The image acquisition device according to any one of claims 1 to 4, characterized in that: The insertion portion (1) is provided with at least one light guide window (2).

6. The image acquisition device according to any one of claims 1 to 4, characterized in that: The image acquisition device further comprises an objective lens (6), wherein the objective lens (6) is arranged at the end of the insertion portion (1).

7. The image acquisition device according to any one of claims 1 to 4, characterized in that: The image acquisition device is provided with an instrument channel (7), and the instrument channel (7) is arranged through the insertion portion (1).

8. The image acquisition device according to any one of claims 1 to 4, characterized in that: The image acquisition device further comprises a water-gas nozzle (8), wherein the water-gas nozzle (8) is arranged at the end of the insertion portion (1).

9. The image acquisition device according to any one of claims 1 to 4, characterized in that: The image acquisition device is provided with a water supply channel, and the water supply channel is arranged to penetrate the insertion part (1) to form a water supply outlet (9) at the end of the insertion part (1).

10. An endoscope, characterized in that: The image acquisition device comprises the image acquisition device according to any one of claims 1 to 9, wherein the endoscope further comprises an operating portion (10) and a scope connector (11), wherein the operating portion (10) and the scope connector (11) are connected via a hose (12), and the insertion portion (1) is connected to the operating portion (10).

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