CN218767800U - Heat dissipation mechanism and optical engine - Google Patents

Abstract

The utility model provides a heat dissipation mechanism and optical engine for dispel the heat to optical engine's imaging lens, include: the first radiating piece is provided with a first radiating channel, the first radiating channel is bent along the length direction of the first radiating piece, the second radiating piece is provided with a second radiating channel, and the second radiating channel is bent along the length direction of the second radiating piece; the communication assembly is communicated with the first heat dissipation channel and the second heat dissipation channel; the first heat dissipation piece and the second heat dissipation piece are respectively arranged on two sides of the imaging lens so as to dissipate heat of the imaging lens; the first heat dissipation piece and the second heat dissipation piece are arranged on the two sides of the communication assembly, so that the imaging lens of the optical engine can be cooled, and the imaging precision is guaranteed.

Description

Heat dissipation mechanism and optical engine

Technical Field

The utility model relates to an optical engine's heat dissipation technical field especially relates to a heat dissipation mechanism and optical engine.

Background

With the continuous development of science and technology, optical engines play an important role in the preparation process of high-precision devices such as integrated circuits and chips. The optical engine comprises an irradiation light source, an optical-mechanical system and an imaging lens, wherein the irradiation light source is used for emitting exposure laser, the optical-mechanical system is used for receiving and processing the exposure laser emitted by the irradiation light source, then refracting the processed exposure laser to the lens, and the lens is used for receiving the laser emitted by the optical-mechanical system and modulating the laser to meet the projection requirement.

In the prior art, when a high-power mechanical optical engine is used, when a high-power laser transmitted by an optical-mechanical system passes through a lens group to modulate a light path, the loss is generated, so that heat is easily generated at the position of a focusing lens group, and the optical performance is affected.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a heat dissipation mechanism, this heat dissipation mechanism sets up in optical engine's imaging lens periphery to can dispel the heat and cool down the imaging lens of the high-power laser of modulation, thereby avoid the optical property that the high temperature influences imaging lens.

The utility model provides a heat dissipation mechanism for dispel the heat to optical engine's imaging lens, include: the first heat dissipation piece is provided with a first heat dissipation channel, the first heat dissipation channel is bent along the length direction of the first heat dissipation piece, the second heat dissipation piece is provided with a second heat dissipation channel, and the second heat dissipation channel is bent along the length direction of the second heat dissipation piece; the communication assembly is communicated with the first heat dissipation channel and the second heat dissipation channel; the first heat dissipation part and the second heat dissipation part are respectively arranged on two sides of the imaging lens to dissipate heat of the imaging lens.

So set up, set up first heat-dissipating spare and second heat-dissipating spare through the both sides at the intercommunication subassembly to can dispel the heat to optical engine's imaging lens, thereby guarantee the imaging accuracy.

In an embodiment of the present invention, the first heat dissipation channel includes a first water inlet channel and a first water return channel, one end of the first water inlet channel is a first water inlet, the other end of the first water inlet channel is a first pair of interfaces, the first water inlet channel extends along the length direction of the first heat dissipation member, the first water return channel extends along the length direction of the first heat dissipation member, one end of the first water return channel is a closed port, the other end of the first water return channel is a second pair of interfaces, and the first pair of interfaces and the second pair of interfaces are communicated with each other.

So set up, first heat dissipation is through setting up first inlet channel and first outlet channel to the refrigerant liquid that can be can flow through first inlet channel and first outlet channel in proper order, thereby take away the heat that imaging lens produced.

In an embodiment of the present invention, the first pair of interfaces of the first water inlet channel is bent for a plurality of times to communicate with the second pair of interfaces of the first water return channel.

So set up, through setting up the bending of following width direction to improve the length of runner, further improved heat exchange efficiency.

In an embodiment of the present invention, the first heat dissipation channel further includes a first water outlet channel and a diversion portion, the first water outlet channel extends along a length direction of the first heat dissipation member and seals the first water return channel the sealing opening, one end of the first water outlet channel is a first water outlet, the diversion portion is provided with a first diversion opening and a second diversion opening, the first diversion opening is communicated with the first water return channel, and the second diversion opening is communicated with the first water outlet channel.

So set up, through setting up first exhalant canal and reposition of redundant personnel portion for the fluid can be derived the refrigerant liquid through first reposition of redundant personnel mouth according to the installation situation of reality, and leads back through the second reposition of redundant personnel mouth, and flows first radiating element from first exhalant canal.

In an embodiment of the present invention, the number of the first diversion ports is provided with a plurality of first diversion ports, and the plurality of first diversion ports are arranged at intervals along the extending direction of the first backwater channel; the number of the second branch flow ports is provided with a plurality of the second branch flow ports, and the second branch flow ports are arranged at intervals along the extending direction of the first water outlet channel.

So set up, through setting up a plurality of first reposition of redundant personnel mouths and second reposition of redundant personnel mouth to can just adjust the flow variation to different power.

In an embodiment of the present invention, a plurality of the second branch ports have different diameters.

So set up, through setting up the second reposition of redundant personnel mouth of different diameters to can do real-time adjustment to the water-cooling part that the resistance is different, thereby reach suitable flow distribution.

In an embodiment of the present invention, the second heat dissipation channel includes a second water inlet channel and a second water outlet channel, the second water inlet channel is disposed along a length direction of the second heat dissipation member, one end of the second water inlet channel is a second water inlet, and the other end of the second water inlet channel is a third pair of interfaces, the second water outlet channel is disposed along a length direction of the second heat dissipation member, one end of the second water outlet channel is a fourth pair of interfaces, and the other end of the second water outlet channel is a second water outlet, the third pair of interfaces and the fourth pair of interfaces are communicated with each other.

So set up, through setting up second inlet channel and second outlet channel to the second that can the radiating piece can dispel the heat at imaging lens's opposite side.

In an embodiment of the present invention, the communicating component includes a first communicating member and a second communicating member, one end of the first communicating member communicates with the first branch port, and the other end of the first communicating member is connected to the second water inlet of the second water inlet channel, one end of the second communicating member communicates with the second branch port, and the other end of the second communicating member is connected to the second water outlet of the second water outlet channel.

So set up, through setting up first intercommunication piece and second intercommunication piece for the cooling water can get back to first heat dissipation channel again after the second heat dissipation channel after passing through first heat dissipation channel, can also make the adjustment to the structure when making first heat dissipation channel and second heat dissipation channel communicate each other.

In an embodiment of the present invention, the communication assembly further includes a first communication member and a second communication member, one end of the first communication member communicates with the first water outlet of the first water outlet channel, and the other end of the first communication member is connected to the second water inlet of the second water inlet channel, one end of the second communication member communicates with the first diversion port, and the other end of the second communication member is connected to the second diversion port.

So set up, through setting up first intercommunication piece and second intercommunication piece, cooling water that can be in proper order through first heat dissipation channel and second heat dissipation channel to dispel the heat to imaging lens.

The utility model also provides an optical engine, this optical engine still include imaging lens and as above-mentioned arbitrary one heat dissipation mechanism, heat dissipation mechanism set up in imaging lens's lateral part.

The utility model discloses an imaging lens periphery color number at optical engine sets up heat dissipation mechanism to can dispel the heat the cooling to the imaging lens of the high-power laser of modulation, thereby avoid the optical property that the high temperature influences imaging lens.

Drawings

Fig. 1 is a schematic structural diagram of a first heat sink in an embodiment of the present invention;

fig. 2 is a schematic structural view of the first heat dissipation element shown in fig. 1 from another perspective;

fig. 3 is a schematic structural view of the first heat dissipating element shown in fig. 1 from another view angle;

fig. 4 is a schematic structural view of the first heat dissipating element shown in fig. 1 from another view angle;

fig. 5 isbase:Sub>A cross-sectional view of the first heat dissipation element taken along linebase:Sub>A-base:Sub>A of fig. 4;

fig. 6 is a schematic structural view of a second heat sink in an embodiment of the present invention;

fig. 7 is a structural view of the second heat dissipation element shown in fig. 4 from another perspective;

fig. 8 is a cross-sectional view of the second heat sink shown in fig. 4 at B-B.

100. A heat dissipation mechanism; 10. a first heat sink; 11. a first heat dissipation channel; 111. a first water inlet channel; 1111. a first water inlet; 1112. a first pair of interfaces; 112. a first water return passage; 1121. closing the opening; 1122. a second pair of interfaces; 113. a first water outlet channel; 1131. a first water outlet; 12. a flow dividing section; 121. a first diversion port; 122. a second diversion port; 13. a first mounting portion; 20. a second heat sink; 21. a second heat dissipation channel; 211. a second water inlet channel; 2111. a second water inlet; 2112. a third interface; 212. a second water outlet channel; 2121. a fourth pair of interfaces; 2122. a second water outlet; 22. a second mounting portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

With the continuous development of science and technology, in the prior art, an optical engine plays an important role in the preparation process of high-precision devices such as integrated circuits and chips, wherein, in the use process of a high-power mechanical optical engine, when high-power laser transmitted by an optical-mechanical system passes through an imaging lens to modulate a light path, heat is easy to be generated at a focusing lens due to loss, so that the optical performance is affected.

To the technical problem, the utility model provides a heat dissipation mechanism 100, this heat dissipation mechanism 100 sets up in optical engine's lens group to can dispel the heat the cooling to the lens group of modulating high-power laser, thereby avoid the high temperature and influence the optical property of lens group.

Referring to fig. 1 to 8, the present invention provides a heat dissipation mechanism 100, the heat dissipation mechanism 100 includes a first heat dissipation element 10, a second heat dissipation element 20 and a communication component, the first heat dissipation element 10 and the second heat dissipation element 20 are disposed at the periphery of an optical lens, and communicate a first heat dissipation channel 11 in the first heat dissipation element 10 with a second heat dissipation channel 21 in the second heat dissipation element 20 through the communication component, the first heat dissipation element 10 and the second heat dissipation element 20 are used for dissipating heat from a lens set of an optical engine.

The first heat dissipation member 10 and the second heat dissipation member 20 are both substantially rectangular solids, the first heat dissipation channel 11 is bent along the length direction in the first heat dissipation member 10, the first heat dissipation channel 11 is bent along the length direction in the second heat dissipation member 20, the first heat dissipation channel 11 is communicated with the second heat dissipation channel 21 by the communication component, the first heat dissipation member 10 and the second heat dissipation member 20 form a lens set, and cooling water can circulate through the first heat dissipation channel 11 and the second heat dissipation channel 21 and take away absorbed heat.

With the arrangement, the first heat dissipation part 10 and the second heat dissipation part 20 are arranged on two sides of the lens group, so that cooling water can pass through the first heat dissipation channel 11 and the second heat dissipation channel 21, and heat dissipation treatment can be performed on the lens group.

It should be noted that the present invention is not limited to only radiating the lens group by cooling water, but also can perform heat exchange treatment on the lens group by other cooling liquids in other embodiments, for example, liquid coolants such as cooling oil and glycol, as long as the first heat sink 10 and the second heat sink 20 can exchange heat with the lens group, and the heat dissipation of the lens group can be realized.

It can be understood that, in the present embodiment, in order to enable the first heat sink 10 and the second heat sink 20 to be fixedly clamped in the lens group, the periphery of the first heat sink 10 is provided with a plurality of first mounting portions 13, the periphery of the second heat sink 20 is provided with a plurality of second mounting portions 22 corresponding to the first mounting portions 13, and each first mounting portion 13 corresponds to one second mounting portion 22, specifically, in the present embodiment, the first mounting portion 13 and the second mounting portion 22 are both provided as mounting bosses with threaded holes, and the first mounting portion 13 and the second mounting portion 22 are penetrated through by threaded fasteners to fix the first heat sink 10 and the second heat sink 20; it should be understood that the present invention is not limited to the first heat sink 10 and the second heat sink 20 being fixed on both sides of the lens group by the mounting and engaging manner of the threaded fastener and the threaded hole, and in other embodiments, the first heat sink 10 and the second heat sink 20 may be fixed on the periphery of the lens group by other fixing and mounting manners such as welding and fastening.

Further, the first heat sink 10 is disposed at one side of the lens group, the first heat sink 10 includes a first water inlet channel 111, a first water return channel 112 and a first water outlet channel 113, the first water inlet channel 111 is used for being abutted to an external water cooling pipeline; the first water return passage 112 is used for butting the first water inlet passage 111, so that the cooling water can be bent in the first heat sink 10, and the flow path of the cooling water is improved; the first water outlet channel 113 is used for being in butt joint with an external water cooling pipeline, so that the cooling water flows out of the first heat sink 10 through the first water outlet channel 113.

Specifically, the first water inlet channel 111, the first water return channel 112, and the first water outlet channel 113 are all formed along the length direction of the first heat sink 10, and the first water inlet channel 111, the first water return channel 112, and the first water outlet channel 113 are parallel to each other, the first water inlet channel 111 gradually extends from one end of the first heat sink 10 toward the other end of the first heat sink 10, one end of the first water inlet channel 111 is a first water inlet 1111, and the other end is a first pair of connectors 1112; the first water return channel 112 gradually extends from one end of the first heat sink 10 to the other end of the first heat sink 10, one end of the first water return channel 112 is a closed opening 1121, the other end is a second pair of connectors 1122, and the closed opening 1121 needs to be closed after the first water return channel 112 is penetrated; however, the first water inlet channel 111 and the first water outlet channel 113 do not penetrate through the first heat sink 10, and the first water inlet channel 111 is located at a position opposite to the first pair of joints 1112, and the first pair of joints 1112 of the first water inlet channel 111 is bent for multiple times and then communicated with the second pair of joints 1122 of the first water return channel 112, so that the first water inlet channel 111 and the first water return channel 112 are communicated with each other.

In the multi-bending of the first pair of interfaces 1112 of the first water inlet channel 111, the first pair of interfaces 1112 of the first water inlet channel 111 is bent for the first time along the thickness direction of the first heat sink 10, then bent for the second time along the width direction of the first heat sink 10, and finally bent for the third time along the thickness direction of the first heat sink 10, and butted against the second pair of interfaces 1122 of the first water return channel 112, so that the first water inlet channel 111 and the first water outlet channel 113 are communicated with each other.

It should be noted that, in the process of performing multiple bending of the first water inlet channel 111 and penetrating through the first water return channel 112, a perforation manner is adopted to form the circulation channel, and after the perforation is finished, the port of the circulation channel is closed, only the internal circulation channel is required to be communicated with the first water inlet channel 111 to extend the first water inlet channel 111, and in order to avoid flowing out of the first water return channel 112 with cooling water, the internal circulation channel is closed by the closed end of the first water return channel 112 to install the first installation part and the second installation part to the preset position; the utility model does not limit the bending and extending mode of the first water inlet channel 111; the utility model discloses do not restrict the connected mode between first inlet channel 111 and the first return water passageway 112, in other embodiments, can also make first inlet channel 111 and first return water passageway 112 communicate each other through the mode of beating U type hole, as long as can make first inlet channel 111 and second return water passageway communicate each other can.

In addition, the first water outlet channel 113 is disposed between the first water inlet channel 111 and the first water return channel 112, and the first water outlet channel 113 does not penetrate through the first mounting member; in order to enable the cooling water to flow out from the first water outlet channel 113, in an embodiment of the present invention, the first heat sink 10 further includes a flow dividing portion 12, the flow dividing portion 12 is provided with a first flow dividing port 121 and a second flow dividing port 122, the number of the first flow dividing ports 121 is provided in plurality, the plurality of first flow dividing ports 121 are arranged at intervals along the extending direction of the first water return channel 112, and each first flow dividing port 121 is communicated with the first water return channel 112; the number of the second diversion ports 122 is provided with a plurality of second diversion ports 122, the plurality of second diversion ports 122 are arranged at intervals along the extending direction of the first water outlet channel 113, each second diversion port 122 is communicated with the first water outlet channel 113, and the sizes of the plurality of second diversion ports 122 are different; the heat dissipation mechanism 100 further includes a communication component capable of communicating the first branch port 121 and the second branch port 122, so that the cooling water can flow into the first water outlet channel 113 from the first water return channel 112 and flow out of the first heat dissipation member 10 from the first water outlet channel 113; .

So set up, through the second reposition of redundant personnel mouth 122 that sets up size gradual change to can choose for use the second reposition of redundant personnel mouth 122 of different diameters to the outside water cooling plant of difference, make the resistance through second reposition of redundant personnel mouth 122 change, thereby can make the cooling water distribute evenly in first heat dissipation channel 11 and second heat dissipation channel 21.

In an embodiment of the present invention, the second heat sink 20 is disposed at the other side of the lens group and is symmetrically disposed with the first heat sink 10 about the lens group, the second heat sink 20 includes a second water inlet channel 211 and a second water outlet channel 212, the second water inlet channel 211 is used for butting against a water cooling pipeline flowing out of the first heat sink 10; the second water outlet passage 212 is used for butting against an external water cooling pipe, so that the cooling water flows out of the second heat sink 20 through the second water outlet passage 212.

Specifically, the second water inlet channel 211 and the second water outlet channel 212 are both arranged along the length direction of the second heat sink 20, the first water inlet channel 111 and the first water outlet channel 113 are parallel to each other, the first water inlet channel 111 and the second water outlet channel 212 extend from one end of the second heat sink 20 to the other end of the second heat sink 20 gradually, one end of the second water inlet channel 211 is a second water inlet 2111, the other end of the second water inlet channel is a third pair of interfaces 2112, one end of the second water outlet channel 212 is a second water outlet 2122, the other end of the second water outlet channel 212 is a fourth pair of interfaces 2121, and the third pair of interfaces 2112 of the second water inlet channel 211 are bent for multiple times and then communicated with the fourth pair of interfaces 2121 of the second water outlet channel 212, so that the second water inlet channel 211 and the second water outlet channel 212 are communicated with each other.

In the multi-bending of the third interface 2112 of the second water inlet channel 211, the third interface 2112 of the second water inlet channel 211 is bent for the first time along the thickness direction of the second heat sink 20, then bent for the second time along the width direction of the second heat sink 20, finally bent for the third time along the thickness direction of the second heat sink 20, and is in butt joint with the fourth interface 2121 of the second water outlet channel 212, so that the second water inlet channel 211 and the second water outlet channel 212 are communicated with each other; the utility model discloses you do not restrict the second and intake the water passageway 211 and the second intercommunication mode that goes out water passageway 212, in other real-time modes, can also make second intake the water passageway 211 and go out water passageway 212 and directly link up second heat dissipation spare 20, the rethread pipeline with second intake the water passageway 211 and go out water passageway 212 intercommunication each other, as long as can realize first heat dissipation spare 10 and second heat dissipation spare 20 intercommunication each other can.

It should be noted that, in order to be able to address different lens group structures, in an embodiment of the present invention, the communication structure further includes a first communication component and a second communication component, the first communication component and the second communication component are substantially tubular structures, the first communication component is a relatively long hose structure, one end of the first communication component is communicated with the first water outlet 1131 of the first water outlet channel 113, and the other end is connected to the second water inlet 2111 of the second water inlet channel 211, so that the cooling water can enter the second heat dissipation component 20 after passing through the first heat dissipation component 10; the second communication member is provided with a short hose structure, one end of the second communication member is communicated with the first branch port 121, and the other end of the second communication member is in butt joint with the second branch port 122, so that the first water inlet channel 111, the first water return channel 112 and the first water outlet channel 113 form the communicated first heat dissipation channel 11, and cooling water flows into the second heat dissipation member 20 after flowing into the first heat dissipation member 10 and flows out of the second heat dissipation member 20.

In another embodiment, the communication structure further includes a first communication member and a second communication member, the first communication member and the second communication member are both configured as relatively long hose structures, one end of the first communication member is communicated with the first branch port 121, the other end is connected to the second water inlet 2111 of the second water inlet passage 211, one end of the second communication member is communicated with the second branch port 122, and the other end is connected to the second water outlet 2122 of the second water outlet passage 212, so that the cooling water flows into the second heat dissipation member 20 after flowing into the first water inlet passage 111 and the first water return passage 112 of the first heat dissipation member 10, flows into the first water outlet passage 113 from the second heat dissipation member 20, and finally flows out from the first water outlet 1131 of the first water outlet passage 113.

The utility model discloses still be equipped with an optical engine, this optical engine include lens group and as aforesaid arbitrary one heat dissipation mechanism 100, and this heat dissipation mechanism 100 sets up in the lateral part of lens group for lens group is in suitable temperature range, thereby guarantees optical lens's optical property.

The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the present invention as claimed.

Claims (10)

1. A heat dissipation mechanism for dissipating heat from a lens assembly of an optical engine, comprising:

the first heat dissipation piece (10) is provided with a first heat dissipation channel (11), the first heat dissipation channel (11) is bent along the length direction of the first heat dissipation piece (10),

the second heat dissipation piece (20) is provided with a second heat dissipation channel (21), and the second heat dissipation channel (21) is bent along the length direction of the second heat dissipation piece (20); and the number of the first and second groups,

a communication component that communicates the first heat dissipation channel (11) with the second heat dissipation channel (21);

the first heat dissipation piece (10) and the second heat dissipation piece (20) are respectively arranged on two sides of the lens group so as to dissipate heat of the lens group.

2. The heat dissipating mechanism of claim 1, wherein the first heat dissipating passage (11) includes a first water inlet passage (111) and a first water return passage (112), one end of the first water inlet passage (111) is a first water inlet (1111) and the other end is a first pair of ports (1112), the first water inlet passage (111) extends along a length direction of the first heat dissipating member (10), the first water return passage (112) extends along the length direction of the first heat dissipating member (10), one end of the first water return passage (112) is a closed port (1121) and the other end is a second pair of ports (1122), and the first pair of ports (1112) and the second pair of ports (1122) communicate with each other.

3. The heat dissipating mechanism of claim 2, wherein the first pair of joints (1112) of the first water inlet channel (111) is bent for a plurality of times to communicate with the second pair of joints (1122) of the first water return channel (112).

4. The heat dissipating mechanism of claim 2, wherein the first heat dissipating passage (11) further comprises a first water outlet passage (113) and a flow dividing portion (12), the first water outlet passage (113) extends along the length direction of the first heat dissipating member (10) and closes the closed opening (1121) of the first water return passage (112), one end of the first water outlet passage (113) is a first water outlet (1131), the flow dividing portion (12) is provided with a first flow dividing opening (121) and a second flow dividing opening (122), the first flow dividing opening (121) is communicated with the first water return passage (112), and the second flow dividing opening (122) is communicated with the first water outlet passage (113).

5. The heat dissipating mechanism of claim 4, wherein the number of the first flow dividing openings (121) is provided in plurality, and the plurality of the first flow dividing openings (121) are provided at intervals along the extending direction of the first water returning channel (112);

the number of the second branch flow ports (122) is provided with a plurality of the second branch flow ports (122), and the second branch flow ports (122) are arranged at intervals along the extending direction of the first water outlet channel (113).

6. The heat dissipating mechanism of claim 5, wherein the plurality of second branch ports (122) have diameters different from each other.

7. The heat dissipating mechanism of claim 4, wherein the second heat dissipating passage (21) includes a second water inlet passage (211) and a second water outlet passage (212), the second water inlet passage (211) is disposed along a length direction of the second heat dissipating member (20), one end of the second water inlet passage (211) is a second water inlet (2111), and the other end is a third pair of interfaces (2112), the second water outlet passage (212) is disposed along the length direction of the second heat dissipating member (20), one end of the second water outlet passage (212) is a fourth pair of interfaces (2121), and the other end is a second water outlet (2122), and the third pair of interfaces (2112) and the fourth pair of interfaces (2121) communicate with each other.

8. The heat dissipating mechanism of claim 7, wherein the communicating member comprises a first communicating member and a second communicating member, the first communicating member has one end communicating with the first branch port (121) and the other end terminating at the second water inlet (2111) of the second water inlet passage (211), the second communicating member has one end communicating with the second branch port (122) and the other end terminating at the second water outlet (2122) of the second water outlet passage (212).

9. The heat dissipating mechanism of claim 7, wherein the communicating member further comprises a first communicating member having one end communicating with the first water outlet (1131) of the first water outlet channel (113) and the other end terminating with the second water inlet (2111) of the second water inlet channel (211), and a second communicating member having one end communicating with the first branch port (121) and the other end terminating with the second branch port (122).

10. An optical engine comprising a lens assembly and the heat dissipation mechanism of any one of claims 1 to 9 disposed on a side of the lens assembly.

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