Multi-channel light source light path device

Abstract

The utility model relates to a multi-channel light source light path device which comprises a first dichroscope, a second dichroscope and a third dichroscope, the three dichroscopes are different in wave band range, the first dichroscope is placed at a fixed angle, the second dichroscope can be switched from a first angle to a second angle, and the third dichroscope can be switched from a first angle to a second angle. The second dichroscope and the third dichroscope can be switched from a first angle to a second angle, six light sources with different wavebands are further included, the second dichroscope and the third dichroscope which are variable in angle are matched with the six light sources with the different wavebands, four channels can be lightened at the same time, and the second dichroscope and the third dichroscope can be switched according to needs. Only two dichroscopes pass through all light paths, light loss is reduced, light source bright spots are improved, the situation that six channels are lightened at the same time can be avoided, and the requirement for heat dissipation is lowered.

Description

Technical Field

[0001] The present application relates to the technical field of light source optical paths, and in particular to a multi-channel light source optical path device. Background Art

[0002] When performing fluorescence excitation, multi-channel light source optical path devices are often used. At present, the high-power multi-channel light source optical path devices on the market are mostly 4 channels, and the 6-channel and 8-channel light sources are still mostly foreign, and currently they are mainly output by optical fiber; there are two main forms of light source output, one is direct access and the other is optical fiber access; optical fiber access often has brightness loss, and the current highest coupling efficiency has a brightness loss of about 50%. Why 6-channel and 8-channel are mainly output by optical fiber is mainly limited by weight and heat dissipation. Compared with the weight heat dissipation of 4 channels, currently calculated based on the average power of 15-20W per lamp bead, the power of the four channels is basically close to 60-80W when lit at the same time, and the overall heat dissipation is close to the limit of air cooling; plus each lamp bead needs an independent heat sink to dissipate heat, and 2-4 more channels means increased weight and increased heat generation, which has a greater restriction on overall use.

[0003] The optical path of a high-power multi-channel light source is generally based on the circuit board controlling the on and off of the lamp beads (at different positions), and the dichroic mirror changes the direction of the light to guide the light to a specific position (the same position) for output. At present, the six-channel optical path design of domestic manufacturers has been investigated, such as Fig.11 As shown, the light path from the light source to the final output has to pass through three dichroic mirrors. There is a 5%-10% loss every time it passes through a dichroic mirror. Coupled with the optical fiber output, the overall brightness attenuation is relatively large. Utility Model Content

[0004] In order to reduce the brightness attenuation of a light source and improve the brightness of the light source, the present application provides a multi-channel light source optical path device.

[0005] The present application provides a multi-channel light source optical path device adopts the following technical solution:

[0006] A multi-channel light source optical path device comprises a first dichroic mirror, a second dichroic mirror and a third dichroic mirror, wherein the first dichroic mirror is placed at a fixed angle, the second dichroic mirror can be switched from a first angle to a second angle, and the third dichroic mirror can be switched from a first angle to a second angle, the placement direction of the first dichroic mirror, the first angle placement direction of the second dichroic mirror and the first angle placement direction of the third dichroic mirror are all parallel, a line between a center point of the first dichroic mirror and a center point of the second dichroic mirror is set as a first line, and a line between a center point of the first dichroic mirror and a center point of the second dichroic mirror is set as a second line, then the first line and the second line are perpendicular to each other,

[0007] The wavelength band of the first dichroic mirror is between the wavelength band of the second dichroic mirror and the wavelength band of the third dichroic mirror,

[0008] The multi-channel light source optical path device also includes six light sources, namely a first light source, a second light source, a third light source, a fourth light source, a fifth light source and a sixth light source.

[0009] The wavelength band of the first light source is smaller than the wavelength band of the second dichroic mirror, the wavelength band of the second light source is smaller than the wavelength band of the second dichroic mirror, and the wavelength band of the third light source is larger than the wavelength band of the second dichroic mirror.

[0010] The wavelength band of the fourth light source is smaller than the wavelength band of the third dichroic mirror, the wavelength band of the fifth light source is smaller than the wavelength band of the third dichroic mirror, and the wavelength band of the sixth light source is larger than the wavelength band of the third dichroic mirror.

[0011] The wavelength relationship of the six light sources is: the wavelength of the first light source < the wavelength of the second light source < the wavelength of the third light source < the wavelength of the fourth light source < the wavelength of the fifth light source < the wavelength of the sixth light source,

[0012] The first light source, the second light source and the third light source can all emit light to the second dichroic mirror, and the fourth light source, the fifth light source and the sixth light source can all emit light to the third dichroic mirror.

[0013] At a certain moment, one of the first light source and the second light source emits light to the second dichroic mirror together with the third light source, and one of the fourth light source and the fifth light source emits light to the third dichroic mirror together with the sixth light source.

[0014] Preferably, the multi-channel light source optical path device also includes a first light chamber, a second light chamber and a third light chamber, the first dichroic mirror is placed in the first light chamber, the second dichroic mirror, the first light source, the second light source and the third light source are all placed in the second light chamber, and the third dichroic mirror, the fourth light source, the fifth light source and the sixth light source are all placed in the third light chamber.

[0015] Preferably, the first light chamber, the second light chamber and the third light chamber are all square bodies with hollow interiors, the second light chamber comprises a first top surface, and a first side wall of the second light chamber, a second side wall of the second light chamber, a third side wall of the second light chamber and a fourth side wall of the second light chamber connected in sequence, the first side wall of the second light chamber is provided with a first light exit hole, the third light source is fixed to the third side wall of the second light chamber, the first light source is fixed to the second side wall of the second light chamber or the fourth side wall of the second light chamber, the second light source is fixed to the fourth side wall of the second light chamber or the second side wall of the second light chamber,

[0016] The third light chamber includes a second top surface, and a first side wall of the three light chambers, a second side wall of the three light chambers, a third side wall of the three light chambers and a fourth side wall of the three light chambers connected in sequence, the first side wall of the three light chambers is provided with a second light exit hole, the sixth light source is fixed to the third side wall of the three light chambers, the fourth light source is fixed to the second side wall of the three light chambers or the fourth side wall of the three light chambers, and the fifth light source is fixed to the fourth side wall of the three light chambers or the second side wall of the three light chambers.

[0017] Further, the first light chamber comprises a first side wall, a second side wall, a third side wall and a fourth side wall of the light chamber connected in sequence, the first side wall of the light chamber is provided with a first light inlet, the second side wall of the light chamber is provided with a second light inlet, and the fourth side wall of the light chamber is provided with a total light outlet,

[0018] The first light output port and the first light input port are connected via a first connecting tube, and the second light output port and the second light input port are connected via a second connecting tube.

[0019] Preferably, the second dichroic mirror is connected to a first switching knob, and the third dichroic mirror is connected to a second switching knob, the first switching knob is used to control the second dichroic mirror to switch from a first angle to a second angle, and the second switching knob is used to control the third dichroic mirror to switch from a first angle to a second angle.

[0020] Furthermore, the first switching knob is located outside the second light chamber, and the second switching knob is located outside the third light chamber.

[0021] Preferably, the second dichroic mirror is connected to a first switching knob, and the third dichroic mirror is connected to a second switching knob, the first switching knob is used to control the second dichroic mirror to switch from a first angle to a second angle, the second switching knob is used to control the third dichroic mirror to switch from a first angle to a second angle, the first switching knob is fixed to the first top surface, and the second switching knob is fixed to the second top surface.

[0022] Preferably, the first light chamber, the second light chamber and the third light chamber are all square bodies with hollow interiors, and heat sinks are provided outside the second light chamber and the third light chamber. The six light sources are fixed on the heat sinks, and the light from the six light sources is emitted toward the corresponding dichroic mirrors through light-transmitting holes provided on the side walls of the second light chamber and the third light chamber.

[0023] Preferably, the first heat dissipation block, the second heat dissipation block and the third heat dissipation block are integrally formed.

[0024] Preferably, the fourth heat dissipation block, the fifth heat dissipation block and the sixth heat dissipation block are integrally formed.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1) By adopting the dichroic mirror switching solution, all light paths pass through only two dichroic mirrors, which reduces light loss and improves the brightness of the light source;

[0027] 2) To ensure that 4 channels can be lit at the same time, just switch 2 sets of dichroic mirrors as needed, so that there is no situation where 6 channels are lit at the same time, reducing the heat dissipation requirements;

[0028] 3) The overall structural size can be made smaller and more compact;

[0029] 4) Because the light sources (lamp beads) of this design are close together, every three lamp beads can share one heat sink, reducing the overall weight;

[0030] 5) While optimizing weight, the light source can be directly connected to the optical path without the need for optical fiber transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figures 1 to 4 These are four matching relationship diagrams of three dichroic mirrors of a six-channel light source optical path device in an embodiment of the present application.

[0032] Figure 5 It is a structural schematic diagram of a six-channel light source optical path device according to an embodiment of the present application.

[0033] Figure 6 It is a structural schematic diagram of a first light chamber of a six-channel light source optical path device in an embodiment of the present application.

[0034] Figure 7 It is a structural schematic diagram of a second light chamber from a first viewing angle of a six-channel light source optical path device in an embodiment of the present application.

[0035] Figure 8 It is a structural schematic diagram of a second light chamber from a second viewing angle of a six-channel light source optical path device according to an embodiment of the present application.

[0036] Fig. 9 It is a structural schematic diagram of the first viewing angle of the third light chamber of a six-channel light source optical path device in an embodiment of the present application.

[0037] Fig.10 It is a structural schematic diagram of the third light chamber from a second viewing angle of a six-channel light source optical path device in an embodiment of the present application.

[0038] Fig.11 It is a structural schematic diagram of a six-channel light source optical path device in the prior art.

[0039] Description of reference numerals:

[0040] 1. First dichroic mirror; 2. Second dichroic mirror; 3. Third dichroic mirror;

[0041] 4. First light source; 5. Second light source; 6. Third light source; 7. Fourth light source; 8. Fifth light source; 9. Sixth light source;

[0042] 10. First light chamber; 101. First side wall of a light chamber; 1011. First light inlet; 102. Second side wall of a light chamber; 1021. Second light inlet; 103. Third side wall of a light chamber; 104. Fourth side wall of a light chamber; 1041. Total light outlet;

[0043] 12, second light chamber; 121, first top surface; 122, first side wall of second light chamber; 1221, first light exit hole; 123, second side wall of second light chamber; 1231, second light transmission hole; 124, third side wall of second light chamber; 1241, third light transmission hole; 125, fourth side wall of second light chamber; 1251, first light transmission hole;

[0044] 13, third light chamber; 131, second top surface; 132, first side wall of the third light chamber; 1321, second light exit hole; 133, second side wall of the third light chamber; 1331, fifth light transmission hole; 134, third side wall of the third light chamber; 1341, sixth light transmission hole; 135, fourth side wall of the third light chamber; 1351, fourth light transmission hole;

[0045] 14. First switching knob; 15. Second switching knob;

[0046] 16. Heat sink A; 17. Heat sink B; 18. First connecting pipe; 19. Second connecting pipe. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-7 And embodiments, the present application is further described in detail.

[0048] Example 1.

[0049] This embodiment takes a six-channel light source optical path device as an example, and the six-channel light source optical path device includes a first dichroic mirror 1, a second dichroic mirror 2 and a third dichroic mirror 3. The first dichroic mirror 1 is placed at a fixed angle, the second dichroic mirror 2 can be switched from a first angle to a second angle using a first switching knob 14, and the third dichroic mirror 3 can be switched from a first angle to a second angle using a second switching knob 15. The placement direction of the first dichroic mirror 1, the first angle placement direction of the second dichroic mirror 2 and the first angle placement direction of the third dichroic mirror 3 are all parallel. The line between the center point of the first dichroic mirror 1 and the center point of the second dichroic mirror 2 is set as the first line, and the line between the center point of the first dichroic mirror 1 and the center point of the second dichroic mirror 2 is set as the second line. Then, the first line and the second line are perpendicular to each other, and the wavelength band of the first dichroic mirror 1 is located between the wavelength band of the second dichroic mirror 2 and the wavelength band of the third dichroic mirror 3.

[0050] The multi-channel light source optical path device also includes six light sources, namely a first light source 4, a second light source 5, a third light source 6, a fourth light source 7, a fifth light source 8 and a sixth light source 9.

[0051] The wavelength of the first light source 4 is smaller than that of the second dichroic mirror 2 , the wavelength of the second light source 5 is smaller than that of the second dichroic mirror 2 , and the wavelength of the third light source 6 is larger than that of the second dichroic mirror 2 .

[0052] The wavelength of the fourth light source 7 is smaller than the wavelength of the third dichroic mirror 3 , the wavelength of the fifth light source 8 is smaller than the wavelength of the third dichroic mirror 3 , and the wavelength of the sixth light source 9 is larger than the wavelength of the third dichroic mirror 3 .

[0053] The relationship between the wavelengths of the six light sources is: the wavelength of the first light source 4 < the wavelength of the second light source 5 < the wavelength of the third light source 6 < the wavelength of the fourth light source 7 < the wavelength of the fifth light source 8 < the wavelength of the sixth light source 9.

[0054] The first light source 4, the second light source 5 and the third light source 6 can all emit light to the second dichroic mirror 2, and the fourth light source 7, the fifth light source 8 and the sixth light source 9 can all emit light to the third dichroic mirror 3.

[0055] At a certain moment, one of the first light source 4 and the second light source 5 emits light to the second dichroic mirror 2 together with the third light source 6 , and one of the fourth light source 7 and the fifth light source 8 emits light to the third dichroic mirror 3 together with the sixth light source 9 .

[0056] like Figures 1 to 4 As shown, there are a total of six light sources with different wavelength bands, the wavelength of the first light source 4 is 365nm, the wavelength of the second light source 5 is 420nm, the wavelength of the third light source 6 is 460nm, the wavelength of the fourth light source 7 is 550nm, the wavelength of the fifth light source 8 is 620nm, and the wavelength of the sixth light source 9 is 660nm.

[0057] There are three dichroic mirrors in total. The function of the dichroic mirror is to reflect light below the coating band and transmit light above the coating band. Therefore, the coating band of the customized dichroic mirror has a great influence on the overall reflectivity and transmittance of the light. The first light source 4, the second light source 5 and the third light source 6 with the bands of 365nm, 420nm and 460nm are divided into 1 group and used with the second dichroic mirror 2. The coating band of the second dichroic mirror 2 needs to be customized to be 425-455nm. The fourth light source 7, the fifth light source 8 and the sixth light source 9 of nm, 625nm and 650nm are divided into one group and used with the third dichroic mirror 3. The coating band of the third dichroic mirror 3 that needs to be customized is 630-645nm, so that a single dichroic mirror can emit two bands in each group and transmit one band; and then a first dichroic mirror 1 of about 470-555nm is customized at the junction of the two groups of lamp beads to reflect or transmit the two groups of lamp beads again to achieve the final band screening.

[0058] like Figure 1 As shown, when the placement direction of the second dichroic mirror 2 is the first angle and the placement direction of the third dichroic mirror 3 is the second angle, the band combination of the light source (lamp beads) is the first light source 4, the second light source 5, the fifth light source 8 and the sixth light source 9, and the band combination is 365 nm, 460 nm, 620 nm and 660 nm.

[0059] The light of the first light source 4 is reflected by the second dichroic mirror 2 to the first dichroic mirror 1, and then reflected by the first dichroic mirror 1 to the total light outlet 1041. The light of the third light source 6 is transmitted by the second dichroic mirror 2 to the first dichroic mirror 1, and then reflected by the first dichroic mirror 1 to the total light outlet 1041.

[0060] The light from the fifth light source 8 is reflected by the third dichroic mirror 3 to the first dichroic mirror 1, and is transmitted to the main outlet through the first dichroic mirror 1. The light from the sixth light source 9 is transmitted by the third dichroic mirror 3 to the first dichroic mirror 1, and is transmitted to the light outlet through the first dichroic mirror 1.

[0061] like Figure 2 As shown, when the placement direction of the second dichroic mirror 2 is the first angle and the placement direction of the third dichroic mirror 3 is the first angle, the wavelength combination of the light source (lamp beads) is the first light source 4, the second light source 5, the fourth light source 7 and the sixth light source 9, and the wavelength combination is 365nm, 460nm, 550nm and 660nm.

[0062] The light from the first light source 4 is reflected by the second dichroic mirror 2 to the first dichroic mirror 1, and then reflected by the first dichroic mirror 1 to the total light output port 1041. The light from the third light source 6 is transmitted by the second dichroic mirror 2 to the first dichroic mirror 1, and then reflected by the first dichroic mirror 1 to the total light output port 1041.

[0063] The light from the fourth light source 7 is reflected by the third dichroic mirror 3 to the first dichroic mirror 1, and then transmitted to the total light outlet 1041 through the first dichroic mirror 1. The light from the sixth light source 9 is transmitted by the third dichroic mirror 3 to the first dichroic mirror 1, and then transmitted to the light outlet through the first dichroic mirror 1.

[0064] like Figure 3 As shown, when the second dichroic mirror 2 is placed at the second angle and the third dichroic mirror 3 is placed at the second angle, the wavelength combination of the light source (lamp beads) is the second light source 5, the third light source 6, the fifth light source 8 and the sixth light source 9, and the wavelength combination is 420 nm, 460 nm, 620 nm and 660 nm.

[0065] The light from the second light source 5 is reflected by the second dichroic mirror 2 to the first dichroic mirror 1, and then reflected by the first dichroic mirror 1 to the total light output port 1041. The light from the third light source 6 is transmitted by the second dichroic mirror 2 to the first dichroic mirror 1, and then reflected by the first dichroic mirror 1 to the total light output port 1041.

[0066] The light from the fifth light source 8 is reflected by the third dichroic mirror 3 to the first dichroic mirror 1, and is transmitted to the main outlet through the first dichroic mirror 1. The light from the sixth light source 9 is transmitted by the third dichroic mirror 3 to the first dichroic mirror 1, and is transmitted to the light outlet through the first dichroic mirror 1.

[0067] like Figure 4 As shown, when the placement direction of the second dichroic mirror 2 is the second angle and the placement direction of the third dichroic mirror 3 is the first angle, the band combination of the light source (lamp beads) is the second light source 5, the third light source 6, the fourth light source 7 and the sixth light source 9, and the band combination is 420 nm, 460 nm, 550 nm and 660 nm.

[0068] The light from the second light source 5 is reflected by the second dichroic mirror 2 to the first dichroic mirror 1, and then reflected by the first dichroic mirror 1 to the total light output port 1041. The light from the third light source 6 is transmitted by the second dichroic mirror 2 to the first dichroic mirror 1, and then reflected by the first dichroic mirror 1 to the total light output port 1041.

[0069] The light from the fourth light source 7 is reflected by the third dichroic mirror 3 to the first dichroic mirror 1, and then transmitted to the total light outlet 1041 through the first dichroic mirror 1. The light from the sixth light source 9 is transmitted by the third dichroic mirror 3 to the first dichroic mirror 1, and then transmitted to the light outlet through the first dichroic mirror 1.

[0070] The six-channel light source optical path device of this embodiment has the following advantages:

[0071] 1) By adopting the dichroic mirror switching solution, all light paths pass through only two dichroic mirrors, which reduces light loss and improves the brightness of the light source;

[0072] 2) To ensure that 4 channels can be lit at the same time, just switch 2 sets of dichroic mirrors as needed, so that there is no situation where 6 channels are lit at the same time, reducing the heat dissipation requirements;

[0073] 3) The overall structural size can be made smaller and more compact;

[0074] 4) Because the lamp beads are close together, every three lamp beads can share one heat sink, reducing the overall weight;

[0075] 5) While optimizing weight, the light source can be directly connected to the optical path without the need for optical fiber transmission.

[0076] Specifically, Figures 5 to 10 As shown, the multi-channel light source optical path device also includes a first light chamber

[0077] 10, a second light chamber 12 and a third light chamber 13, the first dichroic mirror 1 is placed in the first light chamber 10, the second dichroic mirror 2, the first light source 4, the second light source 5 and the third light source 6 are all placed in the second light chamber 12, and the third dichroic mirror 3, the fourth light source 7, the fifth light source 8 and the sixth light source 9 are all placed in the third light chamber 13.

[0078] Through the cooperation of the first light chamber 10, the second light chamber 12 and the third light chamber 13, the light from each light source is aggregated to the total light outlet 1041 of the first light chamber 10 for fluorescence excitation. Placing the light source in the light chamber can improve the utilization rate of light.

[0079] Specifically, the first light chamber 10 , the second light chamber 12 and the third light chamber 13 are all square bodies with hollow interiors.

[0080] The second light chamber 12 includes a first top surface 121, and a first side wall 122, a second side wall 123, a third side wall 124 and a fourth side wall 125 connected in sequence. The first side wall 122 is provided with a first light exit hole 1221. The third light source 6 is fixed to the third side wall 124. The first light source 4 is fixed to the second side wall 123 or the fourth side wall 125. The second light source 5 is fixed to the fourth side wall 125 or the second side wall 123.

[0081] The third light chamber 13 includes a second top surface 131, and a first side wall 132, a second side wall 133, a third side wall 134 and a fourth side wall 135 of the three light chambers which are connected in sequence. The first side wall 132 of the three light chambers is provided with a second light exit hole 1321, the sixth light source 9 is fixed to the third side wall 134 of the three light chambers, the fourth light source 7 is fixed to the second side wall 133 of the three light chambers or the fourth side wall 135 of the three light chambers, and the fifth light source 8 is fixed to the fourth side wall 135 of the three light chambers or the second side wall 133 of the three light chambers.

[0082] The first light chamber 10 comprises a first light chamber side wall 101, a second light chamber side wall 102, a third light chamber side wall 103 and a fourth light chamber side wall 104 which are connected in sequence. The first light chamber side wall 101 is provided with a first light inlet 1011, the second light chamber side wall 102 is provided with a second light inlet 1021, and the fourth light chamber side wall 104 is provided with a total light outlet 1041.

[0083] The first light outlet and the first light entrance 1011 are connected via a first connecting tube 18 , and the second light outlet and the second light entrance 1021 are connected via a second connecting tube.

[0084] The light source is fixed on the side wall of the light chamber, and the dichroic mirror can be placed in the middle of the light chamber, so that the light source and the dichroic mirror cooperate to aggregate light to the total light outlet 1041 of the first light chamber 10 .

[0085] Preferably, the first switch knob 14 is located outside the second light chamber 12, and the second switch knob 15 is located outside the third light chamber 12.

[0086] Located outside the third light chamber 13.

[0087] When the light chamber is a square body, the first switch knob 14 is fixed to the first top surface 121 , and the second switch knob 15 is fixed to the second top surface 131 , so as to facilitate operation.

[0088] Example 2.

[0089] The other structures of this embodiment are the same as those of embodiment 1, except that: the first light chamber

[0090] 10. The second light chamber 12 and the third light chamber 13 are both hollow square bodies. Figure 5 As shown, heat sinks are provided outside the second light chamber 12 and the third light chamber 13 , and six light sources are fixed on the heat sinks. Lights from the six light sources are emitted toward corresponding dichroic mirrors through light-transmitting holes provided on the side walls of the second light chamber 12 and the third light chamber 13 .

[0091] The six light sources are fixed on a heat sink, which can dissipate heat for the light sources in time, thereby extending the life of the light sources.

[0092] Specifically, the second light chamber 12 includes a first top surface 121, and a second light chamber first side wall 122, a second light chamber second side wall 123, a second light chamber third side wall 124 and a second light chamber fourth side wall 125 connected in sequence.

[0093] The first side wall 122 of the second light chamber is provided with a first light exit hole 1221, the third side wall 124 of the second light chamber is provided with a third light transmission hole 1241, the second side wall 123 of the second light chamber is provided with a second light transmission hole 1231, and the fourth side wall 125 of the second light chamber is provided with a first light transmission hole 1251.

[0094] The third light source 6 is fixed to the third heat sink, which is fixed to the third side wall 124 of the second light chamber. The light of the third light source 6 passes through the third light-transmitting hole 1241 and is emitted to the second dichroic mirror 2.

[0095] The first light source 4 is fixed to the first heat sink, which is fixed to the second side wall 123 of the second light chamber. The light of the first light source 4 passes through the second light-transmitting hole 1231 and is emitted to the second dichroic mirror 2.

[0096] The second light source 5 is fixed to the second heat sink, and the second heat sink is fixed to the fourth side wall 125 of the second light chamber. The light of the second light source 5 passes through the first light-transmitting hole 1251 and is emitted to the second dichroic mirror 2.

[0097] The first side wall 132 of the three-light chamber is provided with a second light exit hole 1321, the third side wall 134 of the three-light chamber is provided with a sixth light transmission hole 1341, the second side wall 133 of the three-light chamber is provided with a fifth light transmission hole 1331, and the fourth side wall 135 of the three-light chamber is provided with a fourth light transmission hole 1351.

[0098] The sixth light source 9 is fixed to the sixth heat sink, which is fixed to the third side wall 134 of the three-light chamber. The light of the sixth light source 9 passes through the sixth light-transmitting hole 1341 and is emitted to the third dichroic mirror 3.

[0099] The fourth light source 7 is fixed to the fourth heat sink, which is fixed to the second side wall 133 of the three-light chamber. The light of the fourth light source 7 passes through the fifth light-transmitting hole 1331 and is emitted to the third dichroic mirror 3.

[0100] The fifth light source 8 is fixed to the fifth heat sink, which is fixed to the fourth side wall 125 of the second light chamber. The light of the fifth light source 8 passes through the fourth light-transmitting hole 1351 and is emitted to the third dichroic mirror 3 .

[0101] For easy installation, the first heat sink, the second heat sink and the third heat sink are designed to be integrally formed, namely the A heat sink 16 , and the fourth heat sink, the fifth heat sink and the sixth heat sink are designed to be integrally formed, namely the B heat sink 17 .

[0102] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-channel light source optical path device, characterized in that: The invention comprises a first dichroic mirror (1), a second dichroic mirror (2) and a third dichroic mirror (3), wherein the first dichroic mirror (1) is arranged at a fixed angle, the second dichroic mirror (2) can be switched from a first angle to a second angle, and the third dichroic mirror (3) can be switched from a first angle to a second angle, the arrangement direction of the first dichroic mirror (1), the first angle arrangement direction of the second dichroic mirror (2) and the first angle arrangement direction of the third dichroic mirror (3) are all parallel, a line between the center point of the first dichroic mirror (1) and the center point of the second dichroic mirror (2) is set as a first line, and a line between the center point of the first dichroic mirror (1) and the center point of the second dichroic mirror (2) is set as a second line, then the first line and the second line are perpendicular to each other, The wavelength band of the first dichroic mirror (1) is located between the wavelength band of the second dichroic mirror (2) and the wavelength band of the third dichroic mirror (3), The multi-channel light source optical path device further comprises six light sources, namely a first light source (4), a second light source (5), a third light source (6), a fourth light source (7), a fifth light source (8) and a sixth light source (9). The wavelength band of the first light source (4) is smaller than the wavelength band of the second dichroic mirror (2), the wavelength band of the second light source (5) is smaller than the wavelength band of the second dichroic mirror (2), and the wavelength band of the third light source (6) is larger than the wavelength band of the second dichroic mirror (2). The wavelength band of the fourth light source (7) is smaller than the wavelength band of the third dichroic mirror (3), the wavelength band of the fifth light source (8) is smaller than the wavelength band of the third dichroic mirror (3), and the wavelength band of the sixth light source (9) is larger than the wavelength band of the third dichroic mirror (3). The wavelength relationship of the six light sources is: the wavelength of the first light source (4) < the wavelength of the second light source (5) < the wavelength of the third light source (6) < the wavelength of the fourth light source (7) < the wavelength of the fifth light source (8) < the wavelength of the sixth light source (9), The first light source (4), the second light source (5) and the third light source (6) are all capable of emitting light to the second dichroic mirror (2), and the fourth light source (7), the fifth light source (8) and the sixth light source (9) are all capable of emitting light to the third dichroic mirror (3). At a certain moment, one of the first light source (4) and the second light source (5) together with the third light source (6) emits light to the second dichroic mirror (2), and one of the fourth light source (7) and the fifth light source (8) together with the sixth light source (9) emits light to the third dichroic mirror (3).

2. A multi-channel light source optical path device according to claim 1, characterized in that: The multi-channel light source optical path device further comprises a first light chamber (10), a second light chamber (12) and a third light chamber ( 13), the first dichroic mirror (1) is placed in the first light chamber (10), the second dichroic mirror (2), the first light source (4), the second light source (5) and the third light source (6) are all placed in the second light chamber ( 12), the third dichroic mirror (3), the fourth light source (7), the fifth light source (8) and the sixth light source (9) are all placed in the third light chamber (13).

3. A multi-channel light source optical path device according to claim 2, characterized in that: The first light chamber (10), the second light chamber (12) and the third light chamber (13) are all square bodies with hollow interiors; the second light chamber (12) comprises a first top surface (121), and a first side wall (122), a second side wall (123), a third side wall (124) and a fourth side wall (125) of the second light chamber which are connected in sequence; the first side wall (122) of the second light chamber is provided with a first light exit hole (1221); the third light source (6) is fixed to the third side wall (124) of the second light chamber; the first light source (4) is fixed to the second side wall (123) of the second light chamber or the fourth side wall (125) of the second light chamber; the second light source (5) is fixed to the fourth side wall (125) of the second light chamber or the second side wall (123) of the second light chamber; The third light chamber (13) comprises a second top surface (131), and a first side wall (132), a second side wall (133), a third side wall (134) and a fourth side wall (135) of the three light chambers which are connected in sequence, the first side wall (132) of the three light chambers being provided with a second light exit hole (1321), the sixth light source (9) being fixed to the third side wall (134) of the three light chambers, the fourth light source (7) being fixed to the second side wall (133) of the three light chambers or the fourth side wall (135) of the three light chambers, and the fifth light source (8) being fixed to the fourth side wall (135) of the three light chambers or the second side wall (133) of the three light chambers.

4. A multi-channel light source optical path device according to claim 3, characterized in that: The first light chamber (10) comprises a first light chamber side wall (101), a second light chamber side wall (102), a third light chamber side wall (103) and a fourth light chamber side wall (104) which are connected in sequence, wherein the first light chamber side wall (101) is provided with a first light inlet (1011), the second light chamber side wall (102) is provided with a second light inlet (1021), and the fourth light chamber side wall (104) is provided with a total light outlet (1041). The first light output hole (1221) and the first light input port (1011) are connected via a first connecting tube (18), and the second light output hole (1321) and the second light input port (1021) are connected via a second connecting tube.

5. The multi-channel light source optical path device according to claim 2, characterized in that: The second dichroic mirror (2) is connected to a first switching knob (14), and the third dichroic mirror (3) is connected to a second switching knob (15), the first switching knob (14) is used to control the second dichroic mirror (2) to switch from a first angle to a second angle, and the second switching knob (15) is used to control the third dichroic mirror (3) to switch from a first angle to a second angle.

6. A multi-channel light source optical path device according to claim 5, characterized in that: The first switching knob (14) is located outside the second light chamber (12), and the second switching knob (15) is located outside the third light chamber (13).

7. The multi-channel light source optical path device according to claim 3, characterized in that: The second dichroic mirror (2) is connected to a first switching knob (14), and the third dichroic mirror (3) is connected to a second switching knob (15); the first switching knob (14) is used to control the second dichroic mirror (2) to switch from a first angle to a second angle, and the second switching knob (15) is used to control the third dichroic mirror (3) to switch from a first angle to a second angle; the first switching knob (14) is fixed to the first top surface (121), and the second switching knob (15) is fixed to the second top surface (131).

8. The multi-channel light source optical path device according to claim 3, characterized in that: The first light chamber (10), the second light chamber (12) and the third light chamber (13) are all square bodies with hollow interiors. The second light chamber (12) and the third light chamber (13) are both provided with heat sinks outside, and the six light sources are all fixed on the heat sinks, the first light source (4) is fixed on the first heat sink, the second light source (5) is fixed on the second heat sink, the third light source (6) is fixed on the third heat sink, the fourth light source (7) is fixed on the fourth heat sink, the fifth light source (8) is fixed on the fifth heat sink, and the sixth light source (9) is fixed on the sixth heat sink. Light from the six light sources passes through light-transmitting holes provided on the side walls of the second light chamber (12) and the third light chamber (13) and is emitted toward corresponding dichroic mirrors.

9. The multi-channel light source optical path device according to claim 8, characterized in that: The first heat dissipation block, the second heat dissipation block and the third heat dissipation block are integrally formed.

10. The multi-channel light source optical path device according to claim 8, characterized in that: The fourth heat dissipation block, the fifth heat dissipation block and the sixth heat dissipation block are integrally formed.

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