Light source and endoscope

Abstract

The utility model discloses a light source and endoscope, include: casing, first dichroic mirror, the first dichroic mirror is in the casing, including first position state and second position state, when the first dichroic mirror is in the first position state, the first dichroic mirror is in the light path, when the first dichroic mirror is in the second position state, the first dichroic mirror avoids the light path, drive arrangement, be located in the casing, and be connected with the first dichroic mirror, for driving the first dichroic mirror switches between the first position state and the second position state. Through the position switching of first dichroic mirror, it is favorable to realize the selective reflection or transmission of different wavelength light. When the first dichroic mirror is in the light path, can make specific wavelength light reflection or transmission, realizes specific light illumination mode, when not needing the specific light illumination mode of the first dichroic mirror corresponding, make the first dichroic mirror switch for the second position state, can avoid the first dichroic mirror and block other light beam output, realizes other light illumination mode.

Description

Technical Field

[0001] This utility model relates to the field of optical imaging equipment technology, and more specifically, to a light source. Furthermore, this utility model also relates to an endoscope including the aforementioned light source. Background Technology

[0002] Endoscopic light sources are used to provide illumination to the endoscope, enabling endoscopic imaging and helping doctors better identify and analyze lesions. To meet the colorimetric requirements of different tissues, multi-wavelength light sources are increasingly used, typically employing a combination of multiple light sources with different spectral bands to generate the illumination required for various illumination modes.

[0003] However, due to the influence of the dichroic mirror, the energy of the light beam decreases. The amount of light emitted from different spectral sources passing through the dichroic mirror varies, resulting in different energy losses in the combined spectral bands under different illumination modes. This is detrimental to meeting the illumination requirements of various illumination modes. In some existing technologies, such multi-wavelength light sources lead to insufficient light intensity in certain spectral bands under some illumination modes, thus failing to provide high-quality imaging. In other existing technologies, the illumination intensity of different spectral sources is adjusted separately for different illumination modes to generate the required illumination light, making the calibration process of the endoscopic light source extremely complex.

[0004] Therefore, how to meet the lighting requirements and imaging effects under various lighting modes while avoiding complex light source calibration is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a light source that can meet the lighting needs and imaging effects of various lighting modes while avoiding complex light source calibration.

[0006] Another objective of this invention is to provide an endoscope that includes the aforementioned light source, which can meet the lighting requirements and imaging effects under various lighting modes while avoiding complex light source adjustments.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A light source, comprising:

[0009] The housing is fixedly positioned relative to the first optical path in the light source;

[0010] The first dichroic mirror is movably disposed on the housing and includes a first position state and a second position state. When the first dichroic mirror is in the first position state, the first dichroic mirror is in the first optical path. When the first dichroic mirror is in the second position state, the first dichroic mirror avoids the first optical path.

[0011] A driving device is disposed in the housing and connected to the first dichroic mirror, used to drive the first dichroic mirror to switch between the first position state and the second position state.

[0012] Optionally, the first dichroic mirror is rotatably disposed on the housing, and the driving device is used to drive the first dichroic mirror to rotate.

[0013] Optionally, the housing is provided with a first mounting base, the first mounting base is provided with a first rotating shaft, the first dichroic mirror is mounted on a first mirror base, and the first mirror base is connected to the first rotating shaft;

[0014] The driving device includes:

[0015] The power source is located at the first mounting base;

[0016] A transmission assembly is connected between the first rotating shaft and the power shaft of the power source.

[0017] Optionally, the first rotating shaft is rotatably connected to the first mounting base via a first bearing and a second bearing;

[0018] One end of the outer ring of the first bearing abuts against the first mounting base, and the other end of the outer ring of the first bearing is fixed to the first mounting base by a locking ring. The inner ring of the first bearing is sleeved on the first rotating shaft, and one end of the inner ring of the first bearing abuts against the stepped surface of the first rotating shaft, and the other end of the inner ring of the first bearing abuts against the output end of the transmission assembly.

[0019] One end of the outer ring of the second bearing abuts against the first mounting base, the inner ring of the second bearing is sleeved on the first rotating shaft, and the end of the inner ring of the second bearing away from the first mounting base abuts against the adapter plate. The adapter plate is connected to the first mirror mount and to the first rotating shaft.

[0020] Optionally, the first rotating shaft has a first flat surface and a second flat surface along its axial direction, the power shaft has a third flat surface along its axial direction, the transmission assembly includes a driving wheel and a driven wheel, the driven wheel is sleeved on the first rotating shaft and fixed to the first flat surface by a first set screw; the adapter plate is fixed to the second flat surface by a second set screw; the driving wheel is sleeved on the power shaft and fixed to the third flat surface by a third set screw; and / or,

[0021] The first rotating shaft is connected to a first pressure plate and a second pressure plate at its two ends respectively. The first pressure plate presses against the transmission assembly and is fixedly connected to the first rotating shaft. The second pressure plate presses against the side of the first mirror base away from the adapter plate and is fixedly connected to the first rotating shaft.

[0022] Optionally, the first dichroic mirror is provided with a test element, and the housing is provided with a first detection element and a second detection element, which are used to detect the test element and are communicatively connected to the driving device; when the first dichroic mirror is in the first position state, the test element corresponds to the position of the first detection element; when the first dichroic mirror is in the second position state, the test element corresponds to the position of the second detection element.

[0023] Optionally, the first detection element and the second detection element are respectively mounted on the housing via a second mounting base, and at least one of the second mounting base and the housing is provided with a groove, and the other is provided with a protrusion that can slide and adjust its position in the groove.

[0024] Optionally, the housing is provided with:

[0025] The first limiting part is used to mechanically limit the first dichroic mirror so as to limit the first dichroic mirror to stop in the first position state;

[0026] The second limiting part is used to mechanically limit the first dichroic mirror to stop the first dichroic mirror in the second position state.

[0027] Optionally, it also includes:

[0028] The second dichroic mirror is arbitrarily positioned within the housing.

[0029] Optionally, the second dichroic mirror is mounted on a third mounting base, one of which, and the housing, is provided with a second rotating shaft, and the other is provided with a shaft hole that rotatably engages with the second rotating shaft. The light source further includes:

[0030] A locking element is used to fix the third mounting base and the housing after the second rotating shaft has been adjusted to the correct rotation angle relative to the shaft hole.

[0031] An endoscope comprising any of the aforementioned light sources.

[0032] The light source provided by this utility model has the following beneficial effects:

[0033] The first dichroic mirror can be switched in position under the drive of the driving device, so that the first dichroic mirror can be in or avoid at least one optical path of the light source. When the first dichroic mirror is in the optical path, it can reflect or transmit a beam of a specific wavelength to achieve a specific light illumination mode. When the specific light illumination mode corresponding to the first dichroic mirror is not needed, the driving device drives the first dichroic mirror to switch from a first position state to a second position state, so that the first dichroic mirror avoids the optical path. This ensures that the first dichroic mirror will not block the collimated output of other beams, so as to achieve other light illumination modes.

[0034] Therefore, the light source provided in this embodiment of the invention, through the switching of the position of the first dichroic mirror, facilitates the selective reflection or transmission of light beams of different wavelengths, thereby providing a variety of light sources with different wavelengths. This allows for the implementation of different illumination modes while reducing the attenuation effect of at least some of the dichroic mirrors on the light beam in at least some illumination modes. When this light source is applied to an endoscope, it can adapt to the color development requirements of different tissues, which is beneficial for achieving more accurate endoscopic imaging and reduces the number of light source calibration steps.

[0035] The endoscope provided by this utility model includes the above-mentioned light source and has at least the beneficial effects of the above-mentioned light source. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0037] Figure 1 A front view of the light source provided in a specific embodiment of this utility model;

[0038] Figure 2 This is a schematic diagram of the bottom of the light source;

[0039] Figure 3 A schematic diagram of the structure after the first mounting base, the first dichroic mirror, and the driving device are assembled;

[0040] Figure 4 for Figure 3 Exploded view;

[0041] Figure 5 for Figure 3 A sectional view;

[0042] Figure 6 This is a schematic diagram of the installation structure of the first testing component;

[0043] Figure 7This is a schematic diagram of the installation structure of the first dichroic mirror.

[0044] Figure label:

[0045] 1-Housing; 11-First mounting base; 111-First rotating shaft; 1111-First flat surface; 1112-Second flat surface; 112-First bearing; 113-Second bearing; 114-Locking ring; 115-Adapter plate; 116-First pressure plate; 117-Second pressure plate; 121-First detection piece; 122-Second detection piece; 13-Second mounting base; 131-Protrusion; 132-First oblong hole; 141-First limiting part; 142-Second limiting part; 15-Slide groove; 16-Shaft hole; 2-First two-way Color mirror; 21-First mirror mount; 22-Item under test; 3-Motor; 31-Third flat surface; 32-Gasket; 4-Transmission assembly; 41-Driving wheel; 42-Driven wheel; 51-First set screw; 52-Second set screw; 53-Third set screw; 6-Second dichroic mirror; 61-Third mounting base; 611-Second rotating shaft; 612-Second oblong hole; 7-Converging assembly; 81-First beam collimator; 82-Second beam collimator; 83-Third beam collimator; 84-Fourth beam collimator; 85-Fifth beam collimator. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0047] The core of this invention is to provide a light source that can meet the lighting requirements and imaging effects under various lighting modes while avoiding complex light source adjustments. Another core aspect of this invention is to provide an endoscope including the aforementioned light source, which can meet the lighting requirements and imaging effects under various lighting modes while avoiding complex light source adjustments.

[0048] Please refer to Figure 1This utility model provides a light source, including a housing 1, a first dichroic mirror 2, and a driving device. The housing 1 is fixedly positioned relative to a first optical path in the light source. The first dichroic mirror 2 is movably disposed on the housing 1 and includes a first position state and a second position state. When the first dichroic mirror 2 is in the first position state, it is in the first optical path. When the first dichroic mirror 2 is in the second position state, it avoids the first optical path. The driving device is disposed on the housing 1 and connected to the first dichroic mirror 2. The driving device is used to drive the first dichroic mirror 2 to switch between the first position state and the second position state.

[0049] In other words, the first dichroic mirror 2 in this embodiment of the present invention can be switched in position under the drive of the driving device, so that the first dichroic mirror 2 can be in at least one optical path of the light source (such as the first optical path) or avoid the optical path (such as the first optical path). When the first dichroic mirror 2 is in the optical path, it can reflect or transmit a beam of a specific wavelength to achieve a specific light illumination mode. For example, the first dichroic mirror 2 can reflect light in the 500~700nm band. Thus, when the first dichroic mirror 2 is in the first optical path, and the beam of light shines on the first dichroic mirror 2, the light in the 500~700nm band reflected by the first dichroic mirror 2 can achieve an amber light illumination mode. When the specific light illumination mode corresponding to the first dichroic mirror 2 is not needed, the first dichroic mirror 2 is driven by the driving device to switch from the first position state to the second position state, so that the first dichroic mirror 2 avoids the first optical path. This ensures that the first dichroic mirror 2 will not block the collimated output of other beams to achieve other light illumination modes.

[0050] Therefore, the light source provided in this embodiment of the invention, through the switching of the position of the first dichroic mirror 2, facilitates the selective reflection or transmission of light beams of different wavelengths, thereby providing a variety of light sources with different wavelengths. This allows for the implementation of different illumination modes while reducing the attenuation effect of at least some of the dichroic mirrors on the light beam in at least some illumination modes. When this light source is applied to an endoscope, it can adapt to the color development requirements of different tissues, which is beneficial for achieving more accurate endoscopic imaging and reduces the number of light source calibration steps.

[0051] It should be noted that this embodiment does not limit the specific switching method of the first dichroic mirror 2 between the first position state and the second position state, as long as the position switching of the first dichroic mirror 2 can be achieved.

[0052] Considering the compactness of the overall structure, in some embodiments, the first dichroic mirror 2 is rotatably mounted on the housing 1, and the driving device is used to drive the first dichroic mirror 2 to rotate.

[0053] In other words, in this embodiment, the first dichroic mirror 2 is driven to rotate by a driving device to achieve the position switching of the first dichroic mirror 2. The space required for the rotation and switching of the first dichroic mirror 2 is relatively compact, which is conducive to making the overall structure of the light source simpler and more compact, occupying less space, and is easy to implement.

[0054] Of course, in other embodiments, the first dichroic mirror 2 can also be driven by a driving device to perform linear motion, planar motion or other composite motion, so as to realize the position switching of the first dichroic mirror 2.

[0055] It should be noted that this embodiment does not limit the specific setting of the first dichroic mirror 2 or the specific structure of the driving device, as long as the rotation and switching of the first dichroic mirror 2 can be realized.

[0056] Please refer to Figure 2 , Figure 3 and Figure 4 In some embodiments, the housing 1 is provided with a first mounting base 11, the first mounting base 11 is provided with a first rotating shaft 111, the first dichroic mirror 2 is mounted on the first mirror base 21, and the first mirror base 21 is connected to the first rotating shaft 111; the driving device includes a power source and a transmission assembly 4, the power source is provided on the first mounting base 11; the transmission assembly 4 is connected between the first rotating shaft 111 and the power shaft of the power source.

[0057] When it is necessary to switch the position of the first dichroic mirror 2, the power source is activated, causing the power source to drive the first rotating shaft 111 to rotate via the transmission assembly 4. This, in turn, causes the first rotating shaft 111 to drive the first mirror mount 21 and the first dichroic mirror 2 to rotate, thus switching the position of the first dichroic mirror 2 between a first position and a second position. It is understood that this solution mounts the power source on the first mounting base 11, facilitating assembly and maintenance through a well-designed structure and position. Furthermore, the first mounting base 11 can be detachably fixed to the housing 1, making assembly and maintenance even easier by removing the first mounting base 11. Of course, in other embodiments, the power source can also be directly fixed to the housing 1 to reduce the number of parts.

[0058] It should be noted that the power source is a device capable of outputting power, and the transmission component 4 is used to transmit the power from the power source to the first rotating shaft 111, so that the first dichroic mirror 2 can be rotated through the first rotating shaft 111 to switch positions. This embodiment does not limit the specific structure of the power source and the transmission component 4. For example, in some embodiments, the power source can be a motor 3, and the transmission component 4 can be a gear transmission device. For example, the transmission component 4 includes a driving wheel 41 and a driven wheel 42. The driving wheel 41 is connected to the power shaft of the power source, and the driven wheel 42 is connected to the first rotating shaft 111. At the same time, the driving wheel 41 and the driven wheel 42 mesh. When the power source is working, it drives the driving wheel 41 to rotate, and through gear meshing, the driven wheel 42 drives the first rotating shaft 111 to rotate.

[0059] In addition, in order to save space and reduce the overall volume of the light source, in some embodiments, the power source and the first mirror mount 21 are located on the same side of the first mounting base 11, and the transmission assembly 4 is located on the side of the first mounting base 11 away from the power source and the first mirror mount 21.

[0060] In other words, this embodiment uses the first mounting base 11 as a reference, and mounts the power source, transmission component 4, and first dichroic mirror 2 on the first mounting base 11. The first mounting base 11 provides support for the power source, transmission component 4, and first dichroic mirror 2, respectively, and maintains their relative positional and movement relationships. The power source and the first mirror mount 21 are located on the same side of the first mounting base 11 in the same direction, while the transmission component 4 is located on the other side of the first mounting base 11. This arrangement helps save space, making the overall structure of the light source compact and reducing its overall size.

[0061] Furthermore, in order to ensure the stable operation of the first rotating shaft 111, such as Figure 4 As shown, in some embodiments, the first rotating shaft 111 is rotatably connected to the first mounting base 11 via a first bearing 112 and a second bearing 113; one end of the outer ring of the first bearing 112 abuts against the first mounting base 11, and the other end of the outer ring of the first bearing 112 is fixed to the first mounting base 11 via a locking ring 114; the inner ring of the first bearing 112 is sleeved on the first rotating shaft 111, and one end of the inner ring of the first bearing 112 abuts against the stepped surface of the first rotating shaft 111, and the other end of the inner ring of the first bearing 112 abuts against the output end of the transmission assembly 4; one end of the outer ring of the second bearing 113 abuts against the first mounting base 11, and the inner ring of the second bearing 113 is sleeved on the first rotating shaft 111; the end of the inner ring of the second bearing 113 away from the first mounting base 11 abuts against the adapter plate 115, and the adapter plate 115 is connected to the first mirror base 21 and to the first rotating shaft 111.

[0062] In other words, in this embodiment, a first bearing 112 and a second bearing 113 are provided between the first rotating shaft 111 and the first mounting base 11 to achieve smooth rotation of the first rotating shaft 111, reduce friction, and improve the stability of the rotation of the first rotating shaft 111. One end of the outer ring of the first bearing 112 abuts against the first mounting base 11 to achieve axial positioning of the outer ring of the first bearing 112; the other end of the outer ring of the first bearing 112 is fixed to the first mounting base 11 by a locking ring 114 to achieve reliable fixation between the outer ring of the first bearing 112 and the first mounting base 11, ensuring the stability of the position of the first bearing 112 and preventing loosening; one end of the inner ring of the first bearing 112 abuts against the stepped surface of the first rotating shaft 111, and the other end of the inner ring of the first bearing 112 abuts against the output end of the transmission assembly 4 to improve the reliability of the connection between the inner ring of the first bearing 112 and the first rotating shaft 111, and improve the synchronization of the rotation of the inner ring of the first bearing 112 with the first rotating shaft 111 and the output end of the transmission assembly 4. One end of the outer ring of the second bearing 113 abuts against the first mounting base 11, and the end of the inner ring of the second bearing 113 away from the first mounting base 11 abuts against the adapter plate 115. This achieves axial positioning of the second bearing 113 and the adapter plate 115. The end of the inner ring of the second bearing 113 near the first mounting base 11 is not fixed, which helps prevent over-positioning of the inner ring of the second bearing 113 and improves the smoothness of the rotation of the inner ring of the second bearing 113 with the first rotating shaft 111. It can be seen that this assembly structure makes the positions of the first bearing 112 and the second bearing 113 reliable, which helps to ensure the smooth rotation of the first rotating shaft 111, and thus helps to ensure the positional accuracy of the first dichroic mirror 2, meeting the requirement of high positional accuracy of the first dichroic mirror 2.

[0063] Furthermore, in order to reduce shaking, in some embodiments, the inner rings of the first bearing 112 and the second bearing 113 are respectively interference-fitted with the first rotating shaft 111, and the outer rings of the first bearing 112 and the second bearing 113 are respectively transition-fitted or interference-fitted with the first mounting base 11.

[0064] In some embodiments, the first mounting base 11 is a plate-shaped piece, with a groove on one side for mounting the first bearing 112, and a protruding ring on the other side for mounting the second bearing 113.

[0065] For further information, please continue to refer to [link / reference]. Figure 4In some embodiments, the first rotating shaft 111 has a first flat surface 1111 and a second flat surface 1112 along its axial direction, and the power shaft has a third flat surface 31 along its axial direction. The transmission assembly 4 includes a driving wheel 41 and a driven wheel 42. The driven wheel 42 is sleeved on the outside of the first rotating shaft 111 and fixed to the first flat surface 1111 by a first set screw 51. The adapter plate 115 is fixed to the second flat surface 1112 by a second set screw 52. The driving wheel 41 is sleeved on the outside of the power shaft and fixed to the third flat surface 31 by a third set screw 53.

[0066] In other words, this embodiment improves the reliability of the connection between the driven wheel 42 and the first rotating shaft 111 by pressing the first flat surface 1111 with the first set screw 51, thus preventing the driven wheel 42 from rotating relative to the first rotating shaft 111 and ensuring the synchronization between the driven wheel 42 and the first rotating shaft 111; and improves the reliability of the connection between the adapter plate 115 and the first rotating shaft 111 by pressing the second flat surface 1112 with the second set screw 52, ​​thus preventing the adapter plate 115 from rotating relative to the first rotating shaft 111 and ensuring the synchronization between the adapter plate 115 and the first rotating shaft 111; and improves the reliability of the connection between the driving wheel 41 and the power shaft by pressing the third flat surface 31 with the third set screw 53, thus preventing the driving wheel 41 from rotating relative to the power shaft and ensuring the synchronization between the driving wheel 41 and the power shaft; thereby, the motion transmission from the power source to the first rotating shaft 111 can be accurately transmitted, so as to precisely control the position of the first dichroic mirror 2.

[0067] In addition, such as Figure 4 and Figure 5 As shown, in some embodiments, the two ends of the first rotating shaft 111 are respectively connected to a first pressure plate 116 and a second pressure plate 117. The first pressure plate 116 is pressed against the transmission assembly 4 and fixedly connected to the first rotating shaft 111. The second pressure plate 117 is pressed against the side of the first mirror base 21 away from the adapter plate 115 and fixedly connected to the first rotating shaft 111.

[0068] In other words, in this embodiment, the first pressure plate 116 and the second pressure plate 117 lock the two ends of the first rotating shaft 111 respectively, so that the first pressure plate 116 and the second pressure plate 117 axially limit the components between the two ends of the first rotating shaft 111 to prevent axial loosening, thereby ensuring the reliability and stability of the rotation of the first rotating shaft 111.

[0069] In addition, the above embodiments do not limit the specific connection method between the power source and the first mounting base 11, as long as the power source can be installed on the first mounting base 11.

[0070] In some embodiments, the power source is a motor 3, which is fixed to the first mounting base 11 by fasteners. The mounting position of the motor 3 on the first mounting base 11 is adjustable so as to adjust the gear center distance between the driving wheel 41 and the driven wheel 42 of the transmission assembly 4.

[0071] In addition, such as Figure 4 As shown, in some embodiments, a gasket 32 ​​is provided between the motor 3 and the first mounting base 11. It is understood that the gasket 32 ​​is used to absorb the vibration of the motor 3 to reduce noise.

[0072] Additionally, please refer to Figure 1 and Figure 5 To ensure the accuracy of the position switching of the first dichroic mirror 2, in some embodiments, the first dichroic mirror 2 is provided with a detection element 22, and the housing 1 is provided with a first detection element 121 and a second detection element 122. The first detection element 121 and the second detection element 122 are respectively used to detect the detection element 22 and are both communicatively connected to the driving device. When the first dichroic mirror 2 is in a first position state, the position of the detection element 22 corresponds to the position of the first detection element 121; when the first dichroic mirror 2 is in a second position state, the position of the detection element 22 corresponds to the position of the second detection element 122. That is, the first detection element 121 is used to stop the driving device from rotating when the detection element 22 is detected, so that the first dichroic mirror 2 stays in the first position state; the second detection element 122 is used to stop the driving device from rotating when the detection element 22 is detected, so that the first dichroic mirror 2 stays in the second position state.

[0073] In other words, this embodiment utilizes the cooperation between the detected element 22 and the first detected element 121 to achieve precise positioning of the first dichroic mirror 2 in the first position state, and utilizes the cooperation between the detected element 22 and the second detected element 122 to achieve precise positioning of the first dichroic mirror 2 in the second position state. Specifically, when the first dichroic mirror 2 rotates under the drive of the driving device, it drives the detected element 22 to rotate as well. When the detected element 22 rotates to the position detected by the first detected element 121, it indicates that the first dichroic mirror 2 has rotated to the correct position. At this time, under the detection signal of the first detected element 121, the driving device is controlled to stop rotating, positioning the first dichroic mirror 2 in the first position state. When the detected element 22 rotates to the position detected by the second detected element 122, it indicates that the first dichroic mirror 2 has rotated to the correct position. At this time, under the detection signal of the second detected element 122, the driving device is controlled to stop rotating, positioning the first dichroic mirror 2 in the second position state. This ensures the accuracy of the position switching of the first dichroic mirror 2.

[0074] It should be noted that this embodiment does not limit the specific structure or detection principle of the first detection element 121 and the second detection element 122, as long as they can detect the detected element 22. Furthermore, this embodiment does not limit the specific structure of the detected element 22, as long as it can trigger the first detection element 121 and the second detection element 122. For example, the first detection element 121 and the second detection element 122 can be photoelectric switches, and the detected element 22 can be a light-shielding sheet.

[0075] In addition, to ensure that the first detection element 121 and the second detection element 122 are respectively located in the optimal detection positions, please refer to... Figure 6 In some embodiments, the first detection element 121 and the second detection element 122 are respectively mounted on the housing 1 via the second mounting base 13. At least one of the second mounting base 13 and the housing 1 is provided with a groove 15, and the other is provided with a protrusion 131 that can slide and adjust its position in the groove 15.

[0076] In other words, in this embodiment, the mounting position of the second mounting base 13 on the housing 1 is adjustable. By sliding the protrusion 131 relative to the slide groove 15, the position of the second mounting base 13 on the housing 1 is adjusted to ensure that the first detection element 121 and the second detection element 122 are in their optimal detection positions, thus ensuring the effectiveness of the detection and facilitating the accuracy of the position of the first dichroic mirror 2. Once the protrusion 131 is adjusted to the correct position relative to the slide groove 15, the second mounting base 13 is locked to the housing 1. This embodiment does not limit the specific locking method of the second mounting base 13. For example, the second mounting base 13 can be fixed to the housing 1 using fasteners. Additionally, the first detection element 121 and the second detection element 122 can be respectively fixed to their corresponding second mounting bases 13 using fasteners.

[0077] like Figure 6 As shown, in some embodiments, the second mounting base 13 is provided with a first waist-shaped hole 132. The size of the waist-shaped hole needs to meet the adjustment margin of the second mounting base 13 so that after the second mounting base 13 is adjusted into place, the second mounting base 13 and the housing 1 can be fixed by fasteners passing through the waist-shaped hole.

[0078] In addition, such as Figure 1 As shown, in some embodiments, the housing 1 is provided with a first limiting part 141 and a second limiting part 142. The first limiting part 141 and the second limiting part 142 are respectively used to mechanically limit the first dichroic mirror 2. The first limiting part 141 is used to limit the first dichroic mirror 2 to stop in a first position state; the second limiting part 142 is used to limit the first dichroic mirror 2 to stop in a second position state.

[0079] In other words, when the first dichroic mirror 2 moves to the first position, the first limiting part 141 stops and limits the first dichroic mirror 2 to keep it in the first position and prevent it from moving further; when the first dichroic mirror 2 moves to the second position, the second limiting part 142 stops and limits the first dichroic mirror 2 to keep it in the second position and prevent it from moving further, thereby ensuring the accuracy of the position of the first dichroic mirror 2.

[0080] Furthermore, in some embodiments, both the first limiting portion 141 and the second limiting portion 142 are buffer members. That is, the first limiting portion 141 and the second limiting portion 142 also have anti-collision functions.

[0081] In addition, such as Figure 1 and Figure 7 As shown, in order to facilitate the implementation of different lighting modes, in some embodiments, the light source also includes a second dichroic mirror 6, which is tunably disposed on the housing 1.

[0082] It should be noted that the second dichroic mirror 6 and the first dichroic mirror 2 can reflect or transmit light of different wavelengths, thereby achieving the output of light of different wavelengths and realizing different lighting modes. The position of the second dichroic mirror 6 is adjustable to facilitate the adjustment of the direction of the light path. When different beam coupling is required, adjusting the position of the second dichroic mirror 6 can improve the consistency of the beam and help ensure the lighting effect.

[0083] It should be noted that, in this embodiment of the present invention, the housing 1 serves as the mounting base for other components, and its position only needs to be fixed relative to the first optical path in the light source. This embodiment of the present invention does not limit the specific shape of the housing 1 or whether it is enclosed, as long as it can provide support and serve as a fixed positional reference standard.

[0084] Furthermore, this embodiment does not limit the specific method by which the position of the second dichroic mirror 6 can be adjusted, as long as the position of the second dichroic mirror 6 can be adjusted in a way that helps ensure the correct path of the light beam.

[0085] like Figure 7 As shown, in some embodiments, the second dichroic mirror 6 is mounted on the third mounting base 61. One of the third mounting base 61 and the housing 1 is provided with a second rotating shaft 611, and the other is provided with a shaft hole 16 that is rotatably engaged with the second rotating shaft 611. The light source also includes a locking member, which is used to fix the third mounting base 61 and the housing 1 after the rotation angle of the second rotating shaft 611 relative to the shaft hole 16 is adjusted to the correct position.

[0086] In other words, in this embodiment, the orientation of the second dichroic mirror 6 is adjusted by rotating the second rotating shaft 611 relative to the shaft hole 16. Once the adjustment is in place, the third mounting base 61 is locked and fixed to the housing 1 using a locking device. This adjustment method is simple and easy to implement.

[0087] It should be noted that this embodiment does not limit the specific structure of the locking component or its locking method, as long as it can lock and fix the third mounting base 61 and the housing 1. Figure 7As shown, in some embodiments, the locking element is a fastener. One of the third mounting base 61 and the housing 1 is provided with a second oblong hole 612. The size of the second oblong hole 612 meets the adjustment margin of the third mounting base 61. When the third mounting base 61 is rotated into place, the fastener is passed through the oblong hole to lock and fix the third mounting base 61 and the housing 1.

[0088] Additionally, it should be noted that this embodiment does not limit the specific number of the first dichroic mirror 2 and the second dichroic mirror 6; those skilled in the art can set them according to actual needs. For example, as Figure 1 As shown, in some embodiments, there is one first dichroic mirror 2 and three second dichroic mirrors 6. The three second dichroic mirrors 6 and one first dichroic mirror 2 are arranged at intervals along a predetermined direction, with the three second dichroic mirrors 6 located on the same side of the first dichroic mirror 2. It is understood that the light source also includes a converging component 7. The light reflected by the first dichroic mirror 2 and the second dichroic mirror 6 is ultimately converged into a light spot by the converging component 7, and then optically coupled to provide illumination. In some embodiments, the first dichroic mirror 2 is closest to the converging component 7.

[0089] In some embodiments, the light source further includes five beam collimators. For ease of description, the five beam collimators are referred to as the first beam collimator 81, the second beam collimator 82, the third beam collimator 83, the fourth beam collimator 84, and the fifth beam collimator 85, respectively. After being collimated by the first beam collimator 81, the light beam is reflected by the first dichroic mirror 2 and reaches the converging component 7. The second beam collimator 82, the third beam collimator 83, and the fourth beam collimator 84 correspond one-to-one with the three second dichroic mirrors 6. The light beam that passes through the second beam collimator 82, the third beam collimator 83, or the fourth beam collimator 84 is reflected by the corresponding second dichroic mirror 6 or transmitted through the non-corresponding second dichroic mirror 6 and reaches the converging component 7. The fifth beam collimator 85 is located outside the outermost second dichroic mirror 6. The light beam collimated by the fifth beam collimator 85 passes through each of the second dichroic mirrors 6 and reaches the converging component 7.

[0090] Those skilled in the art can turn on the light sources corresponding to the first beam collimator 81, the second beam collimator 82, the third beam collimator 83, the fourth beam collimator 84, or the fifth beam collimator 85 according to actual needs to output the corresponding illumination mode. For example, the first dichroic mirror 2 can reflect light in the 500-700nm wavelength band. When light in the 500-700nm wavelength band is needed, the first dichroic mirror 2 is placed in the first position state, and the light source corresponding to the first beam collimator 81 is turned on. However, when red and green light bands are needed for mixing, since red and green light cannot pass through the first dichroic mirror 2, the first dichroic mirror 2 needs to be placed in the second position state.

[0091] In addition to the light source described above, this utility model also provides an endoscope that includes the light source disclosed in the above embodiments. For the structure of other parts of the endoscope, please refer to the prior art, which will not be repeated here.

[0092] The key point of this embodiment is that the endoscope includes the light source disclosed in any of the above embodiments, and at least has the beneficial effects of the above light source, which will not be repeated here.

[0093] It should also be noted that, in this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0094] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0095] The light source and endoscope provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A light source, characterized in that, include: The housing (1) is fixedly positioned relative to the first optical path in the light source; The first dichroic mirror (2) is movably disposed on the housing (1) and includes a first position state and a second position state. When the first dichroic mirror (2) is in the first position state, the first dichroic mirror (2) is in the first optical path. When the first dichroic mirror (2) is in the second position state, the first dichroic mirror (2) avoids the first optical path. A driving device is provided in the housing (1) and connected to the first dichroic mirror (2) for driving the first dichroic mirror (2) to switch between the first position state and the second position state.

2. The light source according to claim 1, characterized in that, The first dichroic mirror (2) is rotatably disposed on the housing (1), and the driving device is used to drive the first dichroic mirror (2) to rotate.

3. The light source according to claim 2, characterized in that, The housing (1) is provided with a first mounting base (11), the first mounting base (11) is provided with a first rotating shaft (111), the first dichroic mirror (2) is mounted on a first mirror base (21), and the first mirror base (21) is connected to the first rotating shaft (111); The driving device includes: The power source is located at the first mounting base (11). The transmission assembly (4) is connected between the first rotating shaft (111) and the power shaft of the power source.

4. The light source according to claim 3, characterized in that, The first rotating shaft (111) is rotatably connected to the first mounting base (11) via a first bearing (112) and a second bearing (113); One end of the outer ring of the first bearing (112) abuts against the first mounting base (11), and the other end of the outer ring of the first bearing (112) is fixed to the first mounting base (11) by a locking ring (114). The inner ring of the first bearing (112) is sleeved on the first rotating shaft (111), and one end of the inner ring of the first bearing (112) abuts against the stepped surface of the first rotating shaft (111). The other end of the inner ring of the first bearing (112) abuts against the output end of the transmission assembly (4). One end of the outer ring of the second bearing (113) abuts against the first mounting base (11), the inner ring of the second bearing (113) is sleeved on the first rotating shaft (111), and the end of the inner ring of the second bearing (113) away from the first mounting base (11) abuts against the adapter plate (115). The adapter plate (115) is connected to the first mirror base (21) and connected to the first rotating shaft (111).

5. The light source according to claim 4, characterized in that, The first rotating shaft (111) has a first flat surface (1111) and a second flat surface (1112) along its axial direction, and the power shaft has a third flat surface (31) along its axial direction. The transmission assembly (4) includes a driving wheel (41) and a driven wheel (42). The driven wheel (42) is sleeved on the outside of the first rotating shaft (111) and fixed to the first flat surface (1111) by a first set screw (51). The adapter plate (115) is fixed to the second flat surface (1112) by a second set screw (52). The driving wheel (41) is sleeved on the outside of the power shaft and fixed to the third flat surface (31) by a third set screw (53). And / or, The first rotating shaft (111) is connected to a first pressure plate (116) and a second pressure plate (117) at both ends. The first pressure plate (116) is pressed against the transmission assembly (4) and fixedly connected to the first rotating shaft (111). The second pressure plate (117) is pressed against the side of the first mirror base (21) away from the adapter plate (115) and fixedly connected to the first rotating shaft (111).

6. The light source according to any one of claims 1-5, characterized in that, The first dichroic mirror (2) is provided with a test piece (22), and the housing (1) is provided with a first detection piece (121) and a second detection piece (122) for detecting the test piece (22) and communicating with the driving device; when the first dichroic mirror (2) is in the first position state, the test piece (22) corresponds to the position of the first detection piece (121); when the first dichroic mirror (2) is in the second position state, the test piece (22) corresponds to the position of the second detection piece (122).

7. The light source according to claim 6, characterized in that, The first detection element (121) and the second detection element (122) are respectively mounted on the housing (1) via the second mounting base (13). At least one of the second mounting base (13) and the housing (1) is provided with a groove (15), and the other is provided with a protrusion (131) that can slide and adjust its position in the groove (15).

8. The light source according to any one of claims 1-5, characterized in that, The housing (1) is provided with: The first limiting part (141) is used to mechanically limit the first dichroic mirror (2) to limit the first dichroic mirror (2) to stop in the first position state; The second limiting part (142) is used to mechanically limit the first dichroic mirror (2) to limit the first dichroic mirror (2) to stop in the second position state.

9. The light source according to any one of claims 1-5, characterized in that, Also includes: The second dichroic mirror (6) is arbitrarily positioned on the housing (1).

10. The light source according to claim 9, characterized in that, The second dichroic mirror (6) is mounted on the third mounting base (61). One of the third mounting base (61) and the housing (1) is provided with a second rotating shaft (611), and the other is provided with a shaft hole (16) that is rotatably engaged with the second rotating shaft (611). The light source further includes: A locking element is used to fix the third mounting base (61) and the housing (1) after the second rotating shaft (611) has been adjusted to the correct rotation angle relative to the shaft hole (16).

11. An endoscope, characterized in that, Includes the light source described in any one of claims 1-10.

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