CN222365181U - Projection optical machine and projector - Google Patents
Projection optical machine and projector Download PDFInfo
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- CN222365181U CN222365181U CN202420871671.4U CN202420871671U CN222365181U CN 222365181 U CN222365181 U CN 222365181U CN 202420871671 U CN202420871671 U CN 202420871671U CN 222365181 U CN222365181 U CN 222365181U
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Abstract
本申请涉及一种投影光机和投影仪。投影光机包括至少两组光学组件，每一所述光学组件包括间隔布设的第一透光元件、LCD屏、第二透光元件、第一菲涅尔透镜和第三透光元件，LCD屏包括屏体，第一透光元件和第二透光元件之间界定出用于容纳屏体的第一液冷腔，第一菲涅尔透镜和第三透光元件之间界定出第二液冷腔，所有光学组件中，所有第一液冷腔和所有第二液冷腔串联和/或并联设置。可采用液冷散热的方式很好地对光学组件的第一透光元件、LCD屏、第二透光元件、第一菲涅尔透镜和第三透光元件进行散热，进而可提高至少两组光学组件的散热效果，也可提高投影光机和包括该投影光机的投影仪的散热效果。
The present application relates to a projection light machine and a projector. The projection light machine includes at least two groups of optical components, each of which includes a first light-transmitting element, an LCD screen, a second light-transmitting element, a first Fresnel lens, and a third light-transmitting element arranged at intervals, the LCD screen includes a screen body, a first liquid-cooling cavity for accommodating the screen body is defined between the first light-transmitting element and the second light-transmitting element, a second liquid-cooling cavity is defined between the first Fresnel lens and the third light-transmitting element, and in all optical components, all first liquid-cooling cavities and all second liquid-cooling cavities are arranged in series and/or in parallel. Liquid cooling can be used to dissipate heat well for the first light-transmitting element, the LCD screen, the second light-transmitting element, the first Fresnel lens, and the third light-transmitting element of the optical component, thereby improving the heat dissipation effect of at least two groups of optical components, and also improving the heat dissipation effect of the projection light machine and the projector including the projection light machine.
Description
Technical Field
The present application relates to the field of projection technologies, and in particular, to a projection light machine and a projector.
Background
A projector is a device capable of projecting video, images, or text onto a screen for display, and is widely used in homes, offices, schools, movie theatres, and the like.
In the process that light emitted by the light source of the projector passes through the optical element of the projector, the optical element absorbs a large amount of light which cannot pass through the optical element, so that the temperature of the optical element is increased, and therefore, heat dissipation treatment is required to be performed on the optical element. However, the heat dissipation effect of the projector in the related art is poor.
Disclosure of utility model
Accordingly, it is necessary to provide a projector and a projector aiming at the problem of poor heat dissipation effect of the projector in the related art.
According to a first aspect of the present application, there is provided a projection light engine comprising at least two sets of optical components;
Each optical assembly comprises a first light-transmitting element, an LCD screen, a second light-transmitting element, a first Fresnel lens and a third light-transmitting element which are distributed at intervals;
The LCD screen comprises a screen body, wherein a first liquid cooling cavity for accommodating the screen body is defined between the first light-transmitting element and the second light-transmitting element;
a second liquid cooling cavity is defined between the first Fresnel lens and the third light-transmitting element;
in all the optical components, all the first liquid cooling cavities and all the second liquid cooling cavities are arranged in series and/or in parallel.
In one embodiment, all of the first liquid cooling chambers and all of the second liquid cooling chambers are disposed in series in all of the optical assemblies.
In one embodiment, the projection light engine further comprises a heat exchanger and a pump;
the heat exchanger having heat exchange channels, the pump having an inlet and an outlet;
One of the first liquid cooling cavities and the second liquid cooling cavities located at the most upstream is communicated with the outlet, the inlet is communicated with one end of the heat exchange channel, and the other end of the heat exchange channel is communicated with one of the first liquid cooling cavities and the second liquid cooling cavities located at the most downstream.
In one embodiment, the projection light engine further comprises a mount;
the mounting piece is provided with at least two first openings, at least two second openings, at least two third openings and at least two fourth openings which are in one-to-one correspondence with at least two groups of optical assemblies;
In the same optical assembly, the first light-transmitting element is connected with the side wall of the corresponding first opening in a sealing way, the second light-transmitting element is connected with the side wall of the corresponding second opening in a sealing way, and/or in the same optical assembly, the first Fresnel lens is connected with the side wall of the corresponding third opening in a sealing way, and the third light-transmitting element is connected with the side wall of the corresponding fourth opening in a sealing way.
In one embodiment, the projection light engine comprises two sets of the optical components;
In one of the optical assemblies, the first light-transmitting element, the LCD screen, the second light-transmitting element, the first Fresnel lens and the third light-transmitting element are arranged at intervals along a first direction;
in the other optical component, the first light-transmitting element, the LCD screen, the second light-transmitting element, the first Fresnel lens and the third light-transmitting element are arranged at intervals along a second direction;
Wherein the first direction and the second direction are perpendicular to each other.
In one embodiment, each optical assembly further includes a light source disposed on a side of the corresponding third light-transmitting element away from the corresponding first fresnel lens;
Wherein the light emitted by the light source of one optical component is red light, and the light emitted by the light source of the other optical component is blue-green light;
The projection light machine further comprises a lens and a first light adjusting component, wherein the first light adjusting component is arranged at an angle with the first direction and the second direction respectively, so that light emitted by one optical component can be incident to the lens through the first light adjusting component, and light emitted by the other optical component can be reflected to the lens by means of the first light adjusting component.
In one embodiment, the projection light engine includes three sets of the optical components;
The first light-transmitting element, the LCD screen, the second light-transmitting element, the first Fresnel lens and the third light-transmitting element of one group of the optical components are distributed at intervals along a first direction, the other two groups of the optical components are distributed at opposite sides of the one group of the optical components along a second direction, and the first light-transmitting element, the LCD screen, the second light-transmitting element, the first Fresnel lens and the third light-transmitting element of the other two groups of the optical components are distributed at intervals along the second direction;
Wherein the first direction and the second direction are perpendicular to each other.
In one embodiment, each optical assembly further includes a light source disposed on a side of the corresponding third light-transmitting element away from the corresponding first fresnel lens;
the light emitted by the light sources of the three groups of optical components is red light, green light and blue light respectively;
The projection light machine further comprises a lens, a second dimming component and a third dimming component, wherein light emitted by one optical component is incident on the lens through the second dimming component and the third dimming component, light emitted by the other optical component is incident on the third dimming component through the second dimming component and is reflected to the lens by means of the third dimming component, and light emitted by the other optical component is incident on the second dimming component through the third dimming component and is reflected to the lens by means of the second dimming component.
In one embodiment, the light emergent side walls of the three groups of optical assemblies are provided with a containing cavity, and the second dimming component and the third dimming component are arranged in a crossing manner and are positioned in the containing cavity;
The second dimming component is arranged at an angle with the first direction and the second direction respectively;
The third dimming component is arranged at an angle with the first direction and the second direction respectively.
According to a second aspect of the present application, there is provided a projector comprising a projection light engine according to any of the embodiments described above.
In the technical scheme of the application, because all the first liquid cooling cavities and all the second liquid cooling cavities are arranged in series and/or in parallel in all the optical components, the cooling liquid flowing into the first liquid cooling cavities can be used for radiating the first light-transmitting element, the LCD screen and the second light-transmitting element, and the cooling liquid flowing into the second liquid cooling cavities can also be used for radiating the corresponding first Fresnel lens and the corresponding third light-transmitting element, so that the first light-transmitting element, the LCD screen, the second light-transmitting element, the first Fresnel lens and the third light-transmitting element of the optical components can be well radiated in a liquid cooling radiating mode, and the radiating effect of at least two groups of optical components can be further improved, and the radiating effect of a projection optical machine and a projector comprising the projection optical machine can also be improved.
Drawings
Fig. 1 shows a top view of a projection light engine according to an embodiment of the application.
Fig. 2 is a schematic structural diagram of a projection optical engine according to an embodiment of the application.
Fig. 3 shows a top view of a projection light engine according to another embodiment of the application.
Fig. 4 is a schematic structural diagram of a projection light machine according to another embodiment of the present application.
Reference numerals 10, projection light machine, 100, optical component, 110, first light transmission element, 120, LCD screen, 121, flat cable, 130, second light transmission element, 140, first Fresnel lens, 150, third light transmission element, 160, light source, 170, light focusing rod, 180, second Fresnel lens, 200, heat exchanger, 201, heat exchange channel, 210, heat exchanger body, 220, heat radiating fin, 230, heat radiating fan, 300, pump, 301, inlet, 302, outlet, 400, mounting piece, 401, first opening, 402, second opening, 403, third opening, 404, fourth opening, 405, flat cable passageway, 500, lens, 610, first light adjusting component, 620, second light adjusting component, 630, third light adjusting component, 710, first pipeline, 720, second pipeline, A, first liquid cooling cavity, B, second liquid cooling cavity, C, containing groove, R, containing cavity.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, they may be fixedly connected, detachably connected or integrally formed, mechanically connected, electrically connected, directly connected or indirectly connected through an intermediate medium, and communicated between two elements or the interaction relationship between two elements unless clearly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.
Fig. 1 shows a top view of a projection light engine according to an embodiment of the application. Fig. 2 is a schematic structural diagram of a projection optical engine according to an embodiment of the application.
Referring to fig. 1 and 2, a projection light engine 10 according to an embodiment of the application includes at least two optical assemblies 100.
Each optical assembly 100 includes a first light transmissive element 110, an LCD screen 120, a second light transmissive element 130, a first fresnel lens 140, and a third light transmissive element 150 arranged in spaced relation.
The LCD panel 120 includes a panel body, a first liquid cooling chamber a for accommodating the panel body is defined between the first light transmitting element 110 and the second light transmitting element 130, and a second liquid cooling chamber B is defined between the first fresnel lens 140 and the third light transmitting element 150.
Alternatively, the first light transmissive element 110 may comprise a first glass.
Alternatively, the second light-transmitting element 130 may include a second glass, and may further include a polarizing film disposed on a surface of the second glass, where the polarizing film may be used to make the required light incident on the LCD screen 120 and thus the lens 500 of the projection light engine 10. The second glass may be heat insulating glass, and the heat dissipation effect of the first liquid cooling cavity a may be improved by using the second light transmitting element 130 with heat insulating function, so that the heat dissipation effects of the first light transmitting element 110, the LCD screen 120 and the second light transmitting element 130 may be improved.
Optionally, the third light transmissive element 150 may comprise a third glass.
In all optical assemblies 100, all first liquid cooling chambers a and all second liquid cooling chambers B are arranged in series and/or in parallel.
The direction of the first light transmitting element 110, the LCD panel 120, the second light transmitting element 130, the first fresnel lens 140, and the third light transmitting element 150 of one optical assembly 100 and the direction of the first light transmitting element 110, the LCD panel 120, the second light transmitting element 130, the first fresnel lens 140, and the third light transmitting element 150 of the other optical assembly 100 may intersect each other. The direction of the first light-transmitting element 110, the LCD panel 120, the second light-transmitting element 130, the first fresnel lens 140, and the third light-transmitting element 150 of one optical assembly 100 and the direction of the first light-transmitting element 110, the LCD panel 120, the second light-transmitting element 130, the first fresnel lens 140, and the third light-transmitting element 150 of the other optical assembly 100 may be parallel to each other. Of course, the projection light engine 10 may further include three sets of optical components 100, where the directions of the first light-transmitting element 110, the LCD screen 120, the second light-transmitting element 130, the first fresnel lens 140, and the third light-transmitting element 150 of the two sets of optical components 100 are arranged parallel to each other, and the directions of the first light-transmitting element 110, the LCD screen 120, the second light-transmitting element 130, the first fresnel lens 140, and the third light-transmitting element 150 of the other sets of optical components 100 are arranged intersecting each other.
The application is not limited to the serial connection and parallel connection of all the first liquid cooling cavities A and all the second liquid cooling cavities B, but also can be the parallel connection of all the first liquid cooling cavities A and all the second liquid cooling cavities B, or can be the serial connection of all the first liquid cooling cavities A into a first serial group and the serial connection of all the second liquid cooling cavities B into a second serial group, and the serial connection of the first serial group and the second serial group is realized.
Because all the first liquid cooling cavities a and all the second liquid cooling cavities B in all the optical assemblies 100 are arranged in series and/or in parallel, the cooling liquid flowing into the first liquid cooling cavities a can be used for radiating the first light-transmitting element 110, the LCD screen 120 and the second light-transmitting element 130, and the cooling liquid flowing into the second liquid cooling cavities B can also be used for radiating the corresponding first fresnel lens 140 and the corresponding third light-transmitting element 150, so that the cooling liquid radiating mode can be adopted for radiating the first light-transmitting element 110, the LCD screen 120, the second light-transmitting element 130, the first fresnel lens 140 and the third light-transmitting element 150 of the optical assemblies 100 well, and further, the radiating effect of at least two groups of optical assemblies 100 can be improved, and the radiating effect of the projection optical machine 10 and the projector comprising the projection optical machine 10 can also be improved.
In some embodiments, all of the first liquid cooling chambers a and all of the second liquid cooling chambers B are disposed in series in all of the optical assemblies 100.
Therefore, compared with the pipelines required by parallel connection, fewer pipelines are required by serial connection of all the first liquid cooling cavities A and all the second liquid cooling cavities B, which is beneficial to improving the installation efficiency of the projection optical machine 10 and reducing the installation cost of the projection optical machine 10.
In some embodiments, the projection light engine 10 further includes a heat exchanger 200 and a pump 300, the heat exchanger 200 having a heat exchange channel 201, the pump 300 having an inlet 301 and an outlet 302, one of all the first liquid cooling chambers a and all the second liquid cooling chambers B located furthest upstream being in communication with the outlet 302, the inlet 301 being in communication with one end of the heat exchange channel 201, the other end of the heat exchange channel 201 being in communication with one of all the first liquid cooling chambers a and all the second liquid cooling chambers B located furthest downstream.
Specifically, in the embodiment shown in fig. 1, the number of the optical assemblies 100 is two, and the cooling liquid flowing out from the outlet 302 of the pump 300 sequentially passes through the second liquid cooling chamber B on the right optical assembly 100, the second liquid cooling chamber B on the left optical assembly 100, the first liquid cooling chamber a on the left optical assembly 100, and the first liquid cooling chamber a on the right optical assembly 100, that is, the second liquid cooling chamber B on the right optical assembly 100 is located at the most upstream, and the first liquid cooling chamber a on the right optical assembly 100 is located at the most downstream.
In this way, the pump 300 can be utilized to make the cooling liquid circulate in the circulation loop formed by all the first liquid cooling cavities a and all the second liquid cooling cavities B, and the heat of the cooling liquid in the circulation loop is taken away by the heat exchanger 200, so that heat dissipation can be well carried out for all the first liquid cooling cavities a and all the second liquid cooling cavities B.
Of course, the present application is not limited thereto, for example, when all the first liquid cooling chambers a and all the second liquid cooling chambers B are arranged in parallel, one ends of all the first liquid cooling chambers a and all the second liquid cooling chambers B may be connected in parallel to a portion of the pump 300 where the inlet 301 is arranged, the outlet 302 may be connected to one end of the heat exchanging channel 201, and the other ends of all the first liquid cooling chambers a and all the second liquid cooling chambers B may be connected in parallel to the other end of the heat exchanging channel 201. In this way, the pump 300 and the heat exchanger 200 can be used to dissipate heat from all the first liquid cooling chambers a and all the second liquid cooling chambers B.
In some embodiments, the heat exchanger 200 includes a heat exchanger body 210, heat radiation fins 220 disposed outside the heat exchanger body 210, and a heat radiation fan 230 disposed toward at least part of the heat radiation fins 220, and the heat exchange channel 201 is disposed inside the heat exchanger body 210.
When the heat exchanger 200 is used, the heat of the cooling liquid flowing through the heat exchange channel 201 can be absorbed by the heat dissipating fins 220, and the heat dissipating fins 220 on the heat exchanger body 210 can be well dissipated by the heat dissipating fan 230, so that the cooling liquid flowing through the heat exchange channel 201 can be well dissipated, and the cooled cooling liquid is supplied to all the first liquid cooling cavities a and all the second liquid cooling cavities B by the pump 300, so that the heat dissipating effect of the projection optical machine 10 can be improved.
In some embodiments, the projection light engine 10 further includes a mounting member 400, where at least two first openings 401 and at least two second openings 402 corresponding to at least two groups of optical components 100 are disposed on the mounting member 400, and in the same optical component 100, the first light-transmitting element 110 is hermetically connected to a sidewall of the corresponding first opening 401, and the second light-transmitting element 130 is hermetically connected to a sidewall of the corresponding second opening 402.
1-4, The mounting member 400 is an integral body, all the first liquid cooling cavities A and all the second liquid cooling cavities B are connected in series to form an inner cavity of the mounting member 400, or the mounting member 400 may include at least two mounting seats (not shown in the figure), taking the number of the optical assemblies 100 as two groups for illustration, the mounting member 400 includes two mounting seats, each mounting seat is provided with a corresponding first opening 401, a corresponding second opening 402, a corresponding third opening 403 and a corresponding fourth opening 404, and then all the first liquid cooling cavities A and all the second liquid cooling cavities B are connected in series through corresponding communicating pipes.
Since the first light-transmitting element 110 is connected to the side wall of the corresponding first opening 401 in a sealing manner, and the second light-transmitting element 130 is connected to the side wall of the corresponding second opening 402 in a sealing manner, the sealing performance of the first liquid cooling chamber a can be improved, and the heat dissipation effects of the first light-transmitting element 110, the LCD screen 120 and the second light-transmitting element 130 can be improved, and the heat dissipation effect of the projection optical engine 10 can be improved.
In other embodiments, the projection light engine 10 further includes a mounting member 400, at least two third openings 403 and at least two fourth openings 404 corresponding to at least two groups of optical components 100 are disposed on the mounting member 400, in the same optical component 100, the first fresnel lens 140 is hermetically connected to a sidewall of the corresponding third opening 403, and the third light-transmitting element 150 is hermetically connected to a sidewall of the corresponding fourth opening 404.
Since the first fresnel lens 140 is hermetically connected to the sidewall of the corresponding third opening 403 and the third light-transmitting element 150 is hermetically connected to the sidewall of the corresponding fourth opening 404, the tightness of the second liquid cooling cavity B can be improved, and thus the heat dissipation effect of the first fresnel lens 140 and the third light-transmitting element 150 can be improved, and further the heat dissipation effect of the projection optical engine 10 can be improved.
In still other embodiments, the projection light engine 10 further includes a mounting member 400, where at least two first openings 401, at least two second openings 402, at least two third openings 403, and at least two fourth openings 404 are disposed on the mounting member 400 and are in one-to-one correspondence with at least two groups of optical components 100, and in the same optical component 100, the first light-transmitting element 110 is hermetically connected to a sidewall of the corresponding first opening 401, and the second light-transmitting element 130 is hermetically connected to a sidewall of the corresponding second opening 402. The first fresnel lens 140 is sealingly connected to a side wall of the corresponding third opening 403 and the third light transmissive element 150 is sealingly connected to a side wall of the corresponding fourth opening 404.
In this way, the tightness of the first liquid cooling cavity a and the tightness of the second liquid cooling cavity B can be improved, and then the heat dissipation effect of the first light transmission element 110, the LCD screen 120, the second light transmission element 130, the first fresnel lens 140 and the third light transmission element 150 can be improved, and further the heat dissipation effect of the projection optical machine 10 can be improved.
In some embodiments, the mounting member 400 further includes at least two flat cable passages 405 corresponding to at least two groups of optical components 100, the lcd panel 120 further includes a flat cable 121 connected to the panel body, the flat cable 121 passes through the flat cable passages 405, and a portion of the flat cable 121 passing through the flat cable passages 405 is connected to a side wall of the flat cable passages 405 in a sealing manner.
In this way, on the one hand, the tightness of the first liquid cooling cavity a can be improved, and the heat dissipation effects of the first light-transmitting element 110, the LCD screen 120 and the second light-transmitting element 130 can be well improved, so that the heat dissipation effect of the projection optical engine 10 can be improved. On the other hand, the flat cable 121 of the LCD panel 120 is conveniently connected to other electric devices.
In some embodiments, the mounting member 400 is an integral body, all the first liquid cooling cavities a and all the second liquid cooling cavities B are connected in series to form an inner cavity of the mounting member 400, a liquid inlet and a liquid outlet are formed on the mounting member 400, the projector optical machine 10 further includes a first pipeline 710 and a second pipeline 720, the outlet 302 is communicated with the liquid outlet through the first pipeline 710, and an end of the heat exchange channel 201 away from the inlet 301 is communicated with the liquid inlet through the second pipeline 720.
In this way, the sealing performance and reliability of the connection between the first liquid cooling cavity a and the second liquid cooling cavity B can be improved, the flow rate of the cooling liquid between the first liquid cooling cavity a and the second liquid cooling cavity B can be increased, the heat dissipation effect of the first light transmission element 110, the LCD screen 120, the second light transmission element 130, the first fresnel lens 140 and the third light transmission element 150 can be improved, the heat dissipation effect of the projection optical machine 10 can be improved, the number of pipeline arrangement can be reduced while the heat is dissipated for all the first liquid cooling cavity a and all the second liquid cooling cavity B, and the cost of the projection optical machine 10 can be reduced to a certain extent.
In some embodiments, the directions of the first light transmissive element 110, the LCD panel 120, the second light transmissive element 130, the first fresnel lens 140, and the third light transmissive element 150 of one optical assembly 100 and the directions of the first light transmissive element 110, the LCD panel 120, the second light transmissive element 130, the first fresnel lens 140, and the third light transmissive element 150 of the other optical assembly 100 intersect each other.
In this way, in the two groups of optical assemblies 100, the flow paths between the first liquid cooling cavity a and the second liquid cooling cavity B on one optical assembly 100 and the first liquid cooling cavity a and the second liquid cooling cavity B on the other optical assembly 100 are in a non-linear extending arrangement, which is beneficial to prolonging the time of the cooling liquid flowing through the corresponding first liquid cooling cavity a and the corresponding second liquid cooling cavity B, and further improving the heat dissipation effect of the corresponding optical assembly 100.
In some embodiments, referring to fig. 1 and 2, the projection light engine 10 includes two sets of optical components 100, wherein in one optical component 100, the first light-transmitting element 110, the LCD screen 120, the second light-transmitting element 130, the first fresnel lens 140 and the third light-transmitting element 150 are arranged at intervals along the first direction F 1. In another optical assembly 100, in the optical assembly 100, the first light transmitting element 110, the LCD screen 120, the second light transmitting element 130, the first fresnel lens 140, and the third light transmitting element 150 are arranged at intervals along the second direction F 2. Wherein the first direction F 1 and the second direction F 2 are perpendicular to each other.
Compared with the first light-transmitting element 110, the LCD screen 120, the second light-transmitting element 130, the first fresnel lens 140 and the third light-transmitting element 150 of the two sets of optical components 100 being arranged at intervals in the same direction, in this embodiment, the two sets of optical components 100 are arranged in a direction perpendicular to each other, which is beneficial to reducing the overall occupied space of the two sets of optical components 100, and also can enable the circulation paths between the first liquid cooling cavity a and the second liquid cooling cavity B on one of the optical components 100 and the first liquid cooling cavity a and the second liquid cooling cavity B on the other optical component 100 to extend in a non-linear manner, thereby improving the heat dissipation effect of the optical components 100.
In some embodiments, each optical assembly 100 further includes a light source 160 disposed on a side of the corresponding third light-transmitting element 150 away from the corresponding first fresnel lens 140, wherein the light emitted by the light source 160 of one optical assembly 100 is red light, the light emitted by the light source 160 of the other optical assembly 100 is blue-green light, the projection light engine 10 further includes a lens 500 and a first light-adjusting component 610, and the first light-adjusting component 610 is disposed at an angle with respect to the first direction F 1 and the second direction F 2, respectively, so that the light emitted by one optical assembly 100 can be incident on the lens 500 through the first light-adjusting component 610, and the light emitted by the other optical assembly 100 can be reflected to the lens 500 by means of the first light-adjusting component 610.
Illustratively, the first light transmitting element 110, the LCD panel 120, the second light transmitting element 130, the first fresnel lens 140, the third light transmitting element 150, and the light source 160 of the first group of optical assemblies 100 are arranged at intervals along the first direction F 1, the first light transmitting element 110, the LCD panel 120, the second light transmitting element 130, the first fresnel lens 140, the third light transmitting element 150, and the light source 160 of the second group of optical assemblies 100 are arranged at intervals along the second direction F 2, and the light emitted by the light source 160 of the first group of optical assemblies 100 is red light, the light emitted by the light source 160 of the second group of optical assemblies 100 is blue-green light, and the first dimming component 610 is a red filter.
In this way, the red light emitted from the light source 160 of one optical assembly 100 may sequentially pass through the corresponding third light-transmitting element 150, the first fresnel lens 140, the second light-transmitting element 130, the LCD screen 120 and the first light-transmitting element 110, and be incident on the lens 500 through the first dimming component 610, and the blue-green light emitted from the light source 160 of the other optical assembly 100 may sequentially pass through the corresponding third light-transmitting element 150, the first fresnel lens 140, the second light-transmitting element 130, the LCD screen 120 and the first light-transmitting element 110, and be reflected to the lens 500 by means of the first dimming component 610, so that the projection of the color image may be realized.
In this embodiment, each optical assembly 100 further includes a light condensing rod 170 disposed between the corresponding light source 160 and the corresponding third light transmitting element 150.
The light emitted by the corresponding light source 160 can be condensed to the corresponding third light-transmitting element 150 by the condensing rod 170, which is beneficial to improving the projection effect of the projection light machine 10.
In this embodiment, each optical assembly 100 further includes a second fresnel lens 180 disposed on a side of the corresponding first light transmissive element 110 facing away from the corresponding LCD screen 120.
In this way, the red light emitted from the light source 160 of one optical assembly 100 may sequentially pass through the corresponding light-gathering rod 170, the third light-transmitting element 150, the first fresnel lens 140, the second light-transmitting element 130, the LCD screen 120, the first light-transmitting element 110 and the second fresnel lens 180, and be incident on the lens 500 through the first dimming component 610, and the blue-green light emitted from the light source 160 of the other optical assembly 100 may sequentially pass through the corresponding light-gathering rod 170, the third light-transmitting element 150, the first fresnel lens 140, the second light-transmitting element 130, the LCD screen 120, the first light-transmitting element 110 and the second fresnel lens 180, and be reflected to the lens 500 through the first dimming component 610, so that the projection of the color image may be better achieved.
In the present embodiment, the light emitting sides of the two sets of optical assemblies 100 define a receiving groove C, and the first dimming component 610 is disposed in the receiving groove C.
In this way, the accommodating groove C can be used to accommodate the first dimming component 610, which is beneficial to reducing the occupied space of the projection optical engine 10 and realizing the projection of the color image.
In some embodiments, referring to fig. 3 and 4, the projection light engine 10 includes three sets of optical components 100, wherein the first light-transmitting element 110, the LCD screen 120, the second light-transmitting element 130, the first fresnel lens 140 and the third light-transmitting element 150 of one set of optical components 100 are arranged at intervals along the first direction F 1, and the other two sets of optical components 100 are arranged on opposite sides of the one set of optical components 100 along the second direction F 2, and the first light-transmitting element 110, the LCD screen 120, the second light-transmitting element 130, the first fresnel lens 140 and the third light-transmitting element 150 of the other two sets of optical components 100 are all arranged at intervals along the second direction F 2, wherein the first direction F 1 and the second direction F 2 are perpendicular to each other.
Compared with the first light-transmitting element 110, the LCD screen 120, the second light-transmitting element 130, the first fresnel lens 140 and the third light-transmitting element 150 of the three sets of optical assemblies 100 which are arranged at intervals in the same direction, in this embodiment, the three sets of optical assemblies 100 are arranged in a substantially U-shape, which is beneficial to reducing the overall occupied space of the three sets of optical assemblies 100, and the first liquid cooling cavity a and the second liquid cooling cavity B of one optical assembly 100 and the first liquid cooling cavity a and the second liquid cooling cavity B of the other optical assembly 100 can be arranged in a non-linear extending manner, so as to improve the heat dissipation effect of the optical assemblies 100.
In this embodiment, each optical assembly 100 further includes a light source 160 disposed on a side of the corresponding third light-transmitting element 150 away from the corresponding first fresnel lens 140, the light emitted by the light sources 160 of the three groups of optical assemblies 100 is red light, green light and blue light, respectively, the projection light engine 10 further includes a lens 500, a second dimming component 620 and a third dimming component 630, wherein the light emitted by one optical assembly 100 is incident on the lens 500 through the second dimming component 620 and the third dimming component 630, the light emitted by another optical assembly 100 is incident on the third dimming component 630 through the second dimming component 620 and is reflected to the lens 500 by the third dimming component 630, and the light emitted by another optical assembly 100 is incident on the second dimming component 620 through the third dimming component 630 and is reflected to the lens 500 by the second dimming component 620.
In particular, in the embodiment shown in fig. 3 and fig. 4, the light emitted by the light source 160 of the first group of optical components 100 is red light, the light emitted by the light source 160 of the second group of optical components 100 is green light, the light emitted by the light source 160 of the third group of optical components 100 is blue light, and the first light transmitting element 110, the LCD screen 120, the second light transmitting element 130, the first fresnel lens 140 and the third light transmitting element 150 of the first group of optical components 100 are arranged at intervals along the second direction F 1, and the second group of optical components 100 and the third group of optical components 100 are arranged on the left and right sides of the first group of optical components 100 along the second direction F 2. The second dimming component 620 is a red-green filter, and the third dimming component 630 is a red-blue filter.
In this way, the red light emitted by the light source 160 of one optical assembly 100 may sequentially pass through the corresponding third light-transmitting element 150, the first fresnel lens 140, the second light-transmitting element 130, the LCD screen 120 and the first light-transmitting element 110, and be incident on the lens 500 through the second light-modulating component 620 and the third light-modulating component 630, the green light emitted by the light source 160 of the other optical assembly 100 may sequentially pass through the corresponding third light-transmitting element 150, the first fresnel lens 140, the second light-transmitting element 130, the LCD screen 120 and the first light-transmitting element 110, and be incident on the third light-modulating component 630 through the second light-modulating component 620, and be reflected to the lens 500 by the third light-modulating component 630, and the blue light emitted by the other optical assembly 100 sequentially passes through the corresponding third light-transmitting element 150, the first fresnel lens 140, the second light-transmitting element 130, the LCD screen 120 and the first light-transmitting element 110, and be incident on the second light-modulating component 620, and be reflected to the lens 500 by the second light-modulating component 620, so that projection of a color image may be achieved.
In this embodiment, each optical assembly 100 may further include a light collecting rod 170 disposed between the corresponding light source 160 and the corresponding third light transmitting element 150, and a second fresnel lens 180 disposed on a side of the corresponding first light transmitting element 110 facing away from the corresponding LCD screen 120.
In the present embodiment, the light-emitting side walls of the three groups of optical assemblies 100 define a receiving cavity Q, the second dimming component 620 and the third dimming component 630 are disposed to cross each other and are located in the receiving cavity Q, the second dimming component 620 is disposed at an angle with the first direction F 1 and the second direction F 2, and the third dimming component 630 is disposed at an angle with the first direction F 1 and the second direction F 2.
Specifically, the second dimming component 620 and the third dimming component 630 perpendicularly intersect each other.
In this way, the accommodating cavity Q can be used to accommodate the second dimming component 620 and the third dimming component 630, which is beneficial to reducing the occupied space of the projection optical engine 10 and realizing the projection of the color image.
When the projection optical engine 10 of the present application is used, on one hand, the liquid cooling heat dissipation mode can be adopted to well dissipate heat of the first light-transmitting element 110, the LCD screen 120, the second light-transmitting element 130, the first fresnel lens 140 and the third light-transmitting element 150 of the optical assembly 100, so that the heat dissipation effect of at least two groups of optical assemblies 100 can be improved, and the heat dissipation effect of the projection optical engine 10 can also be improved. On the other hand, the projection of the color image may be achieved by using the light sources 160 of at least two sets of the optical assemblies 100 to emit light of different colors.
The application also provides a projector, which comprises the projection optical machine 10 and has a good heat dissipation effect.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. The projection optical machine is characterized by comprising at least two groups of optical components;
Each optical assembly comprises a first light-transmitting element, an LCD screen, a second light-transmitting element, a first Fresnel lens and a third light-transmitting element which are distributed at intervals;
The LCD screen comprises a screen body, wherein a first liquid cooling cavity for accommodating the screen body is defined between the first light-transmitting element and the second light-transmitting element;
a second liquid cooling cavity is defined between the first Fresnel lens and the third light-transmitting element;
in all the optical components, all the first liquid cooling cavities and all the second liquid cooling cavities are arranged in series and/or in parallel.
2. The projection light engine of claim 1, wherein all of the first liquid cooling cavities and all of the second liquid cooling cavities are arranged in series in all of the optical assemblies.
3. The projection light engine of claim 2, further comprising a heat exchanger and a pump;
the heat exchanger having heat exchange channels, the pump having an inlet and an outlet;
One of the first liquid cooling cavities and the second liquid cooling cavities located at the most upstream is communicated with the outlet, the inlet is communicated with one end of the heat exchange channel, and the other end of the heat exchange channel is communicated with one of the first liquid cooling cavities and the second liquid cooling cavities located at the most downstream.
4. A projection light engine as claimed in any one of claims 1-3, characterized in that the projection light engine further comprises a mounting;
the mounting piece is provided with at least two first openings, at least two second openings, at least two third openings and at least two fourth openings which are in one-to-one correspondence with at least two groups of optical assemblies;
In the same optical assembly, the first light-transmitting element is connected with the side wall of the corresponding first opening in a sealing way, the second light-transmitting element is connected with the side wall of the corresponding second opening in a sealing way, and/or in the same optical assembly, the first Fresnel lens is connected with the side wall of the corresponding third opening in a sealing way, and the third light-transmitting element is connected with the side wall of the corresponding fourth opening in a sealing way.
5. A projection light engine as claimed in any one of claims 1-3, characterized in that the projection light engine comprises two sets of the optical components;
In one of the optical assemblies, the first light-transmitting element, the LCD screen, the second light-transmitting element, the first Fresnel lens and the third light-transmitting element are arranged at intervals along a first direction;
in the other optical component, the first light-transmitting element, the LCD screen, the second light-transmitting element, the first Fresnel lens and the third light-transmitting element are arranged at intervals along a second direction;
Wherein the first direction and the second direction are perpendicular to each other.
6. The projection light engine of claim 5, wherein each optical assembly further comprises a light source disposed on a side of the corresponding third light transmissive element away from the corresponding first fresnel lens;
Wherein the light emitted by the light source of one optical component is red light, and the light emitted by the light source of the other optical component is blue-green light;
The projection light machine further comprises a lens and a first light adjusting component, wherein the first light adjusting component is arranged at an angle with the first direction and the second direction respectively, so that light emitted by one optical component can be incident to the lens through the first light adjusting component, and light emitted by the other optical component can be reflected to the lens by means of the first light adjusting component.
7. A projection light engine as claimed in any one of claims 1-3, characterized in that the projection light engine comprises three sets of the optical components;
The first light-transmitting element, the LCD screen, the second light-transmitting element, the first Fresnel lens and the third light-transmitting element of one group of the optical components are distributed at intervals along a first direction, the other two groups of the optical components are distributed at opposite sides of the one group of the optical components along a second direction, and the first light-transmitting element, the LCD screen, the second light-transmitting element, the first Fresnel lens and the third light-transmitting element of the other two groups of the optical components are distributed at intervals along the second direction;
Wherein the first direction and the second direction are perpendicular to each other.
8. The projection light engine of claim 7, wherein each of the optical assemblies further comprises a light source disposed on a side of the corresponding third light transmissive element away from the corresponding first fresnel lens;
the light emitted by the light sources of the three groups of optical components is red light, green light and blue light respectively;
The projection light machine further comprises a lens, a second dimming component and a third dimming component, wherein light emitted by one optical component is incident on the lens through the second dimming component and the third dimming component, light emitted by the other optical component is incident on the third dimming component through the second dimming component and is reflected to the lens by means of the third dimming component, and light emitted by the other optical component is incident on the second dimming component through the third dimming component and is reflected to the lens by means of the second dimming component.
9. The projection light engine of claim 8, wherein the light exit side walls of the three groups of optical assemblies are provided with a containing cavity, and the second light adjusting component and the third light adjusting component are arranged in a crossing manner and are positioned in the containing cavity;
The second dimming component is arranged at an angle with the first direction and the second direction respectively;
The third dimming component is arranged at an angle with the first direction and the second direction respectively.
10. A projector comprising a projection light engine as claimed in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420871671.4U CN222365181U (en) | 2024-04-25 | 2024-04-25 | Projection optical machine and projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420871671.4U CN222365181U (en) | 2024-04-25 | 2024-04-25 | Projection optical machine and projector |
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| Publication Number | Publication Date |
|---|---|
| CN222365181U true CN222365181U (en) | 2025-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420871671.4U Active CN222365181U (en) | 2024-04-25 | 2024-04-25 | Projection optical machine and projector |
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| Country | Link |
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| CN (1) | CN222365181U (en) |
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- 2024-04-25 CN CN202420871671.4U patent/CN222365181U/en active Active
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