CN115047697A - Optical projection equipment - Google Patents
Optical projection equipment Download PDFInfo
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- CN115047697A CN115047697A CN202210600656.1A CN202210600656A CN115047697A CN 115047697 A CN115047697 A CN 115047697A CN 202210600656 A CN202210600656 A CN 202210600656A CN 115047697 A CN115047697 A CN 115047697A
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- Prior art keywords
- heat dissipation
- plate
- plastic lens
- heat
- optical projection
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
Abstract
An optical projection device is disclosed. The optical projection apparatus includes: the device comprises a device body, at least one plastic lens and a heat dissipation component; the plastic lens is arranged in the equipment main body; the equipment main body is provided with a plate body, and the plate body is opposite to the plastic lens in the height direction of the equipment main body; the heat dissipation part comprises a plurality of heat dissipation fins, the heat dissipation part is arranged on the outer surface of the plate body, and/or one end of the heat dissipation part is fixed on the plastic lens, and the other end of the heat dissipation part is located on the outer side of the equipment main body.
Description
Technical Field
The present application relates to the field of optical devices, and more particularly, to an optical projection device.
Background
Digital Light Processing (DLP) projection Light machine display mode has the characteristics of high brightness, high contrast and high resolution, and is combined with an LED Light source, and the projection Light machine can realize miniaturized portable miniature projection, which is popular among more and more users.
The light beam adjusting module in the projector comprises a lens combination. The lens generally divide into glass, plastic two kinds, and the lens of two kinds of materials all has respective advantage and shortcoming, and the lens weight of plastic material is less, but the plastic material thermal conductivity is relatively poor to the lens of plastic material easily produces the deformation after being heated, if the heat that gives off in the course of the work can not in time dredge the discharge, will lead to the plastic lens to warp, and then influences the imaging effect of projection ray apparatus.
Disclosure of Invention
An object of this application is to provide a new technical scheme of optical projection equipment to solve the lens heat dissipation problem of plastic material.
According to a first aspect of embodiments of the present application, there is provided an optical projection apparatus. The optical projection apparatus includes: the device comprises a device body, at least one plastic lens and a heat dissipation component;
the plastic lens is arranged in the equipment main body;
the equipment main body is provided with a plate body, and the plate body is opposite to the plastic lens in the height direction of the equipment main body;
the heat dissipation part comprises a plurality of heat dissipation fins, the heat dissipation part is arranged on the outer surface of the plate body, and/or one end of the heat dissipation part is fixed on the plastic lens, and the other end of the heat dissipation part is located on the outer side of the equipment main body.
Optionally, the plate body comprises a first plate, the first plate being located above the plastic lens; a plurality of the heat radiating fins are fixedly provided on the outer surface of the first plate.
Optionally, a baffle portion is disposed on an inner surface of the first plate, and the baffle portion is located on a light path of the optical projection apparatus in a dark state.
Optionally, the first plate is a metal cover plate provided with a heat dissipation member.
Optionally, the plate body includes a second plate, the second plate is located below the plastic lens, and a through hole is formed in the second plate;
the heat dissipation part comprises a connecting part and a heat dissipation body connected with the connecting part, the connecting part penetrates through the through hole and is fixedly connected with the plastic lens, and the heat dissipation body is located outside the equipment main body.
Optionally, a groove is formed in the connecting portion, and the lower end of the plastic lens is embedded in the groove.
Optionally, a plurality of the heat dissipation fins are fixedly arranged on the heat dissipation body.
Optionally, the spacing between adjacent fins is d1, the fins have a thickness d2, wherein the spacing d1 between adjacent fins is 2-3 times the spacing d 2.
Optionally, channels are formed between adjacent heat dissipation fins, and the extending direction of the channels is configured to be consistent with the wind direction provided by the heat dissipation device.
Optionally, the second plate is made of plastic.
A technical effect of the embodiments of the present application is that the present application provides an optical projection apparatus. A heat dissipation part is arranged on the outer surface of a plate body of the optical projection equipment and/or on the plastic lens, and the heat dissipation part is positioned on the outer side of the equipment main body. The embodiment of the application sets up the heat dissipation part on optical projection equipment, effectively reduces the temperature of plastic lens through the heat dissipation part.
Further features of the present application and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic structural diagram of an optical projection apparatus in an embodiment of the present application.
Fig. 2 is a schematic structural diagram illustrating a connection between a plastic lens and a heat dissipation member according to an embodiment of the disclosure.
Fig. 3 is a schematic structural diagram illustrating a heat dissipation member disposed on the second plate in the embodiment of the present application.
Fig. 4 is a schematic view of a first plate according to an embodiment of the present disclosure.
Fig. 5 is a schematic structural view of another perspective of the first plate in the embodiment of the present application.
Fig. 6 is a schematic structural diagram of a plastic lens disposed in a main body of an apparatus (not shown in the first plate) according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of the plastic lens disposed in the main body of the device (showing the first plate) according to the embodiment of the present application.
Description of reference numerals:
1. an apparatus main body; 11. a first plate; 111. a baffle portion; 12. a second plate; 2. a plastic lens; 3. a heat dissipating member; 30. a heat dissipating fin; 31. a connecting portion; 311. a groove; 32. a heat dissipation body; 4. a heat sink is provided.
Detailed Description
Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the prior art, the projection lens of an optical projection apparatus (e.g. a projection optical machine) is made of two materials, namely plastic and glass, wherein the plastic lens is generally applied to the optical projection apparatus due to its light weight and low processing cost. When the optical projection equipment projects a dark field, the light of the high-brightness light machine cannot be projected out through the lens but is projected to the position near the prism of the equipment main body. The plastic lens is usually located near the prism, and the temperature rise caused by the energy is high. The heat conductivity coefficient of the plastic part in the equipment main body is lower, generally about 5w/m2.k, so that the heat in the high-brightness optical machine cannot be conducted out in time, the heat risk of the plastic lens is further increased, the temperature of the plastic lens is too high, and even the plastic lens is possibly burnt.
Based on the above technical problem, the present application provides an optical projection apparatus. The optical projection device may be a DLP light projector engine, for example.
Referring to fig. 1 to 7, the optical projection apparatus includes: the device comprises a device body 1, at least one plastic lens 2 and a heat dissipation part 3. The plastic lens 2 is arranged in the equipment main body 1. The apparatus main body 1 includes a plate body, and the plate body is opposed to the plastic lenses 2 in the height direction of the apparatus main body 1. The heat dissipation part 3 comprises a plurality of heat dissipation fins, the heat dissipation part 3 is arranged on the outer surface of the plate body, and/or one end of the heat dissipation part 3 is fixed on the plastic lens 2, and the other end of the heat dissipation part 3 is positioned outside the device main body 1.
In the embodiment of the present application, the optical projection apparatus includes an apparatus main body 1, and the apparatus main body 1 may include a plurality of plate bodies, which enclose a cavity, and the cavity is used for accommodating the plastic lens 2. In one example, a plurality of board bodies (the plurality of board bodies include an upper board, a lower board and a side board connected with the upper board and the lower board respectively) in the optical projection device enclose to form a chamber, and the chamber can be used for placing a light beam adjusting module, wherein the light beam adjusting module comprises a plastic lens 2, a prism assembly and the like; the light source assembly is arranged on the outer surface of the side plate, the through hole is formed in the side plate, and light rays emitted by the light source assembly are transmitted to the light beam adjusting module through the through hole.
In the embodiment of the present application, in order to reduce the temperature of the plastic lens 2, the heat dissipation member 3 is disposed on the optical projection apparatus, and the heat dissipation member 3 includes a plurality of heat dissipation fins 30. The heat dissipation member 3 is provided outside the apparatus main body 1 with respect to the plastic lens 2, and the temperature of the plastic lens 2 is discharged by a heat radiation method or a heat conduction method through the heat dissipation member 3.
In this embodiment, the heat dissipation member 3 is provided on the apparatus body 1, and the heat dissipation member 3 is provided with the heat dissipation fins 30, wherein the heat dissipation member 3 is located outside the apparatus body 1 with respect to the plastic lens 2. In one example, the heat radiating member 3 is provided on the outer surface of the plate body. In another example, the heat dissipation member 3 is disposed on the plastic lens 2, and the heat dissipation member 3 is located outside the apparatus body 1. In still another example, the heat radiating member 3 is fixed on the outer surface of the plate body, and also the heat radiating member 3 is provided on the plastic lens 2, and the heat radiating member 3 provided on the plastic lens 2 is located outside the apparatus main body 1.
In one example, as shown in fig. 4 to 7, the heat dissipation member 3 is disposed on the outer surface of the board body, the convection heat dissipation area of the board body is increased by the heat dissipation fins 30, and the temperature on the plastic lens 2 and the temperature around the plastic lens can be discharged to the outside of the apparatus main body 1 through the board body and the heat dissipation member 3 disposed on the board body by means of heat radiation.
Specifically, in this example, the heat dissipating member 3 and the plate body are not in direct contact with the plastic lens 2, so that the heat generated by the plastic lens 2 is transferred to the plate body provided with the heat dissipating member 3 by radiation, and then the temperature on the plastic lens 2 and the temperature around the plastic lens 2 are exhausted to the outside of the apparatus main body 1 through the plate body provided with the heat dissipating member 3.
In this example, the structure of the plate body in the apparatus main body 1 is improved to rapidly reduce the temperature inside the optical projection apparatus; and under the condition that the arrangement position of the plastic lens 2 is not changed, the risk of scorching deformation of the plastic lens is greatly reduced. In this example, therefore, the temperature of the plastic lens 2 in the high-brightness optical projection apparatus is reduced to a large extent without making a large modification to the optical projection apparatus.
In another example, as shown in fig. 1 to 3, one end of the heat dissipation member 3 is fixed to the plastic lens 2, and the other end of the heat dissipation member 3 is located outside the apparatus body 1. For example, one end of the heat dissipation member 3 is connected to the plastic lens 2, and the other end of the heat dissipation member 3 is located outside the device body 1, so that the temperature on the plastic lens 2 can be discharged to the outside of the device body 1 through the heat dissipation member 3 by a heat conduction method.
Specifically, in this example, in order to reduce the temperature of the plastic lens 2, the heat dissipation member 3 is directly connected to the plastic lens 2, and the heat of the plastic lens 2 is directly conducted out through the heat dissipation member 3.
Or in another example, in order to increase the heat dissipation rate of the plastic lens 2, a heat radiation method and a heat conduction method may be combined, that is, the heat dissipation member 3 is disposed on the outer surface of the plate body, and the heat dissipation member 3 is disposed on the plastic lens 2, so that the heat of the plastic lens 2 is dissipated by multiple heat dissipation methods and the heat dissipation members 3.
Therefore, in the present embodiment, the heat dissipation member 3 is provided on the outer surface of the plate body of the optical projection apparatus, and/or on the plastic lens 2, and the heat dissipation member 3 is located outside the apparatus main body 1. The embodiment of the application sets up heat dissipation part 3 on optical projection equipment, effectively reduces the temperature of plastic lens 2 through heat dissipation part 3.
In an alternative embodiment, referring to fig. 1, in order to cool the whole optical projection apparatus, the optical projection apparatus itself may include some heat dissipation devices 4, for example, the heat dissipation device 4 (blowing device) may be a fan.
In order to reduce the temperature of the plastic lens 2 more quickly, when the heat dissipation part 3 is arranged on the plastic lens 2, the heat dissipation part 3 is arranged outside the equipment main body 1, the heat of the plastic lens 2 is directly conducted out through the heat dissipation part 3, the good heat conduction performance of the heat dissipation part 3 and the air disturbance effect of the fan are utilized, and therefore the purpose of effectively reducing the temperature of the plastic lens 2 is achieved. For example, the heat of the plastic lens 2 is conducted to the heat dissipation member 3, and then the heat is conducted to the outside of the optical projection apparatus by the forced convection action of the fan.
And in order to reduce the temperature of the plastic lens 2 more rapidly, when the heat dissipation member 3 is disposed on the outer surface of the board body, the heat of the plastic lens 2 is discharged by the heat dissipation member 3 in a heat radiation manner, and the heat is rapidly dissipated in the air path provided by the heat dissipation device 4.
In one embodiment, referring to fig. 4-7, the plate body comprises a first plate 11, the first plate 11 being positioned above the plastic lens 2; a plurality of heat radiating fins 30 are fixedly provided on the outer surface of the first plate 11.
In this embodiment, a plurality of heat radiating fins 30 are provided on the outer surface of the first plate 11 of the apparatus body 1, wherein the first plate 11 is located above the plastic lenses 2. For example, the apparatus body 1 comprises a first plate 11 and an opto-mechanical body, wherein the first plate 11 and the opto-mechanical body are connected by means of fasteners. The first plate 11 corresponds to an upper cover of the apparatus main body 1.
In this embodiment, the structure of the first plate 11 of the apparatus body 1 is modified to dissipate the heat of the plastic lens 2 by heat radiation. For example, the heat dissipation member 3 is additionally provided on the outer surface of the first plate 11, or the first plate 11 and a plurality of heat dissipation fins are integrally formed. The heat radiating fins 30 are uniformly arranged on the outer surface of the first plate 11, for example, according to the shape of the first plate 11. In one specific embodiment, the heat dissipating fins 30 are elongated columns protruding from the outer surface of the first plate 11.
The present embodiment only improves the structure of the first plate 11, and reduces the temperature of the plastic lens 2 in the high-brightness optical projection device to a great extent.
In one embodiment, the optical engine assembled with the first plate is placed in the projection machine for temperature testing, and for the temperature of the plastic lens, the temperature of the optical engine during dark field projection is relatively high, and the comparison is verified by a high temperature dark field condition test.
Comparative example 1: when the unmodified first plate is assembled on a light machine for testing, the temperature of the plastic lens under a dark field with the high temperature of 40 ℃ is 93 ℃, and at the moment, certain risk exists. The blocking piece is arranged in the structure to block light, but the first plate provided with the light blocking plate can not quickly conduct heat out, so that the temperature of the first plate is higher than that of the plastic lens.
Example 1: when the heat dissipation fins are arranged on the upper surface of the first plate, the temperature of the plastic lens is 80 ℃ measured under the same test condition, and the temperature of the upper cover is lower than that of the plastic lens.
Therefore, compared with the comparative example 1, in the embodiment 1, the improved first plate can rapidly conduct and dissipate heat under the conditions of heat conduction and convection, and radiation influence on the plastic lens caused by excessive heat concentration is avoided.
In one embodiment, referring to fig. 5, a baffle portion 111 is disposed on an inner surface of the first plate 11, and the baffle portion 111 is located on an optical path of the optical projection apparatus in a dark state.
In this embodiment, the baffle portion 111 is provided on the inner surface of the first plate 11, and for example, the baffle portion 111 may be a light barrier. Specifically, a baffle portion 111 is formed on the first plate 11, the baffle portion 111 can be movably disposed on the first plate 11, and the baffle portion 111 can be disposed in close contact with the first plate 11 when the optical projection apparatus is in an inoperative state; when the optical projection apparatus is in an operating state, the baffle portion 111 is bent so that an included angle is formed between the baffle portion 111 and the first plate 11, and at this time, the baffle portion 111 is located on the optical path when the optical projection apparatus is in a dark state.
Specifically, when the optical projection apparatus projects a dark color image, most of the light is projected onto the baffle portion 111, and the temperature on the baffle portion 111 increases; when the temperature of the baffle portion 111 rises, the temperature of the baffle portion 111 will radiate to the nearby lens, causing the lens around the baffle portion 111 to rise, wherein the lens around the baffle portion 111 includes the plastic lens 2. Therefore, when the optical projection apparatus is in a dark state, the temperature of the baffle portion 111 and the lenses around the baffle portion 111 increases, and most of the heat concentrates on the baffle portion 111 and the lenses around it.
Therefore, in this embodiment, a baffle portion 111 extends from the inner surface of the first plate 11, the baffle portion 111 shields the dark field light, the baffle portion 111 guides the heat to the first plate 11 with a larger area (the area of the upper and lower plates in the device body 1 is generally larger than that of the side plates), and further, the heat dissipation member 3 on the first plate 11 increases the convection heat dissipation area of the first plate 11, so as to dissipate the heat absorbed by the baffle portion 111 and the heat of the plastic lenses 2 around the baffle portion.
Therefore, in the embodiment, even when the optical projection apparatus is in the projection state of the high-temperature dark field, the first plate 11 provided with the heat dissipation member 3 can perform a good heat dissipation function on the baffle portion 111 and the plastic lens 2 around the baffle portion, so that the plastic lens 2 is prevented from being burnt and deformed due to heat concentration.
In one embodiment, as shown with reference to fig. 4-7, the first plate 11 is a metal cover plate with heat sink members 3.
In this embodiment, the structure defining the first plate 11 is a metal cover plate, and the heat dissipation member 3 is provided on an outer surface of the metal cover plate. Since the first plate 11 is made of metal, the temperature of the blocking plate 111 and the plastic lenses 2 around the blocking plate can be radiated by heat radiation through the metal first plate 11 and the heat radiating member 3 provided on the first plate 11.
For example, the metal cover plate is manufactured by a die casting process (the metal cover plate and the heat dissipation component 3 can be integrally formed), the heat conductivity of the metal cover plate is much higher than that of the optical machine main body (the optical machine main body is made of plastic), and the heat conductivity of the metal cover plate is about 96w/m2. k. The metal cover plate with the baffle part 111 and the heat dissipation part 3 is assembled in the equipment body 1, when light rays in the optical projection equipment are projected into the plastic lens 2, even if the projection state of a high-temperature dark field is realized, the metal cover plate can also play a good heat dissipation role, and scorching deformation caused by heat concentration of the plastic lens 2 is avoided.
In one embodiment, referring to fig. 1 to 3, the plate body includes a second plate 12, the second plate 12 is located below the plastic lens 2, and the second plate 12 is provided with a through hole.
The heat dissipation part 3 comprises a connecting part 31 and a heat dissipation body 32 connected with the connecting part 31, the connecting part 31 penetrates through the through hole and is fixedly connected with the plastic lens 2, and the heat dissipation body 32 is located outside the equipment main body 1.
In this embodiment, the plate body includes a second plate 12, and the second plate 12 and the first plate 11 described above are disposed oppositely. For example, the apparatus body 1 includes a first plate 11 and an opto-mechanical body, and the first plate 11 and the opto-mechanical body may be connected by a fastener. The second plate 12 may serve as a bottom plate of the opto-mechanical body.
In this embodiment, one end of the heat dissipation member 3 may be connected to the plastic lens 2, and the other end of the heat dissipation member 3 is located outside the second plate 12. Specifically, the heat dissipation member 3 includes a connection portion 31 and a heat dissipation body 32, the connection portion 31 and the heat dissipation body 32 may be integrally formed, in an actual installation process, the heat dissipation body 32 is located outside the second plate 12, and the connection portion 31 penetrates through the through hole to be located in the device main body 1, and then the plastic lens 2 and the connection portion 31 are connected together. The heat of the plastic lens 2 can be conducted to the outside of the optical projection apparatus through the connecting portion 31 and the heat dissipating body 32.
In an alternative embodiment, the heat dissipation member 3 may be connected to a specific plastic lens 2, or one heat dissipation member 3 may be connected to a plurality of plastic lenses 2, so as to achieve the purpose of dissipating heat of the plurality of plastic lenses 2 at the same time.
In one embodiment, referring to fig. 2, a groove 311 is formed on the connecting portion 31, and the lower end of the plastic lens 2 is embedded in the groove 311.
In this embodiment, a side surface of the connecting portion 31 away from the heat dissipating body 32 is recessed to form a groove 311, wherein the groove 311 may penetrate through the connecting portion 31, and an upper surface of the heat dissipating body 32 forms a bottom of the groove 311. In this case, the lower end of the plastic lens 2 is inserted into the groove 311, the lower end of the plastic lens 2 is abutted against the upper surface of the heat dissipation body 32, or the lower end of the plastic lens 2 is clamped in the groove 311. For example, a protrusion may be formed on the lower end surface of the plastic lens 2, and the protrusion is embedded in the groove 311.
Or the surface of one side of the connecting portion 31 away from the heat dissipating body 32 is recessed to form a groove 311, wherein the depth of the groove 311 can be smaller than the height of the connecting portion 31, in this case, the lower end of the plastic lens 2 is embedded in the groove 311, and the lower end of the plastic lens 2 and the groove 311 can be tightly fitted.
In this embodiment, the heat dissipation member 3 is located below the plastic lens 2, and the position of the heat dissipation member 3 does not interfere with the transmission of light in the optical projection apparatus, so the heat dissipation member 3 does not affect the transmission of light in the optical projection apparatus.
In an alternative embodiment, the connecting portion 31 of the heat dissipating member 3 may be fixedly connected to the plastic lens 2 by bonding or by fastening.
In an alternative embodiment, the heat dissipation device 4 can be used in combination with a graphite sheet, a heat conductive gasket, and other heat conductive materials, so as to achieve a better heat dissipation effect. For example, a graphite sheet or a heat conductive gasket or the like is provided on the inner surface of the second plate 12.
In one embodiment, referring to fig. 1-3, a plurality of the heat dissipating fins 30 are fixedly disposed on the heat dissipating body 32.
In this embodiment, the heat dissipating body 32 is provided with a plurality of heat dissipating fins 30, and the plurality of heat dissipating fins 30 are uniformly disposed on the heat dissipating body 32. For example, the heat dissipating body 32 includes a connecting plate connected to the connecting portion 31, and a plurality of heat dissipating fins 30 are provided on the connecting plate, the heat dissipating fins 30 extending in a direction away from the second plate 12.
In one embodiment, referring to fig. 1-7, the spacing between adjacent fins 30 is d1, the fins 30 have a thickness d2, wherein the spacing d1 between adjacent fins 30 is 2-3 times the distance d 2.
In this embodiment, the heat dissipation member 3 includes a plurality of heat dissipation fins 30, wherein the distance between the heat dissipation fins 30 affects the temperature discharge of the plastic lens 2. For example, the heat dissipation member 3 includes a plurality of heat dissipation fins 30, the heat dissipation member 3 is combined with the heat dissipation device 4 (fan) in the optical projection apparatus, and the heat dissipation device 4 (fan) performs air blowing processing on the heat dissipation member 3, so as to improve the heat dissipation effect of the heat dissipation member 3. When the distance between the heat dissipation fins 30 is too small (too close), the wind resistance is too large; if the pitch of the heat dissipating fins 30 is too large (too thin), the utilization rate of the heat dissipating fins 30 is lowered.
In this embodiment, the distance between adjacent heat dissipation fins 30 is defined as d1, the thickness of the heat dissipation fins 30 is defined as d2, wherein the distance d1 between adjacent heat dissipation fins 30 is within the range of 2d2-3d2, that is, the distance d1 between adjacent heat dissipation fins 30 is 2-3 times the thickness of the heat dissipation fins 30, the heat dissipation effect of the heat dissipation component 3 and the utilization rate of the heat dissipation fins 30 in the heat dissipation component 3 are both balanced, the heat dissipation effect is gradually increased along with the increase of the wind speed, and the heat dissipation effect of the heat dissipation component 3 is greatly improved. In an alternative embodiment, the spacing between adjacent fins 30 may be the same or different.
In one embodiment, adjacent fins 30 form channels therebetween, the channels extending in a direction configured to coincide with the wind direction of the wind energy provided by the heat sink 4.
In this embodiment, in order to avoid interference of the whole air path (i.e. the heat dissipation device 4 of the optical projection apparatus) in the optical projection apparatus, the design of the heat dissipation fins 30 is that the wind direction of the wind energy provided by the heat dissipation device 4 is parallel to the extension of the heat dissipation fins 30 as much as possible, that is, a channel is formed between adjacent heat dissipation fins 30, and the extension direction of the channel is consistent with the wind direction of the wind energy provided by the heat dissipation device 4, so that the convection effect of the heat dissipation fins 30 is exerted, and the heat dissipation effect of the heat dissipation member 3 is improved.
In one embodiment, the second plate 12 is made of plastic.
In this embodiment, the second plate 12 is defined by a plastic material, so that the heat of the plastic lens 2 is conducted to the outside of the optical projection apparatus by thermal conduction. Specifically, the second plate 12 is made of plastic material, and the thermal conductivity coefficient of the plastic material is different, so that the heat dissipation member 3 is directly connected to the plastic lens 2, and the heat of the plastic lens 2 is directly transferred to the outside of the optical projection apparatus through the heat dissipation member 3.
In the above embodiments, the differences between the embodiments are described in emphasis, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in consideration of brevity of the text.
Although some specific embodiments of the present application have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.
Claims (10)
1. An optical projection device, comprising: the device comprises a device body (1), at least one plastic lens (2) and a heat dissipation component (3);
the plastic lenses (2) are arranged in the equipment main body (1);
the equipment main body (1) is provided with a plate body, and the plate body is opposite to the plastic lens (2) in the height direction of the equipment main body (1);
the heat dissipation part (3) comprises a plurality of heat dissipation fins (30), the heat dissipation part (3) is arranged on the outer surface of the plate body, and/or one end of the heat dissipation part (3) is fixed on the plastic lens (2), and the other end of the heat dissipation part (3) is located on the outer side of the equipment main body (1).
2. The optical projection device according to claim 1, wherein the plate body comprises a first plate (11), the first plate (11) being located above the plastic lens (2); a plurality of the heat radiating fins (30) are fixedly provided on the outer surface of the first plate (11).
3. An optical projection device as claimed in claim 2, characterized in that a baffle portion (111) is arranged on the inner surface of the first plate (11), the baffle portion (111) being located on the optical path when the optical projection device is in the dark state.
4. An optical projection device as claimed in any one of claims 2 to 3, characterized in that the first plate (11) is a metal cover plate provided with heat-dissipating components (3).
5. The optical projection device according to claim 1, wherein the plate body comprises a second plate (12), the second plate (12) is located below the plastic lens (2), and the second plate (12) is provided with a through hole;
the heat dissipation part (3) comprises a connecting part (31) and a heat dissipation body (32) connected with the connecting part (31), the connecting part (31) penetrates through the through hole and the plastic lens (2) and is fixedly connected with the through hole, and the heat dissipation body (32) is located on the outer side of the second plate (12).
6. The optical projection device as claimed in claim 5, characterized in that the connecting portion (31) is provided with a groove (311), and the lower end of the plastic lens (2) is embedded in the groove (311).
7. The optical projection device according to claim 5, characterized in that a plurality of said heat dissipating fins (30) are fixedly arranged on said heat dissipating body (32).
8. The optical projection device according to claim 1, wherein the spacing between adjacent heat dissipating fins (30) is d1, the thickness of the heat dissipating fins (30) is d2, wherein the spacing d1 between adjacent heat dissipating fins (30) is 2-3 times the d 2.
9. An optical projection device as claimed in claim 1, characterized in that between adjacent heat-dissipating fins (30) channels are formed, the extension direction of which channels is configured to coincide with the direction of the wind provided by the heat-dissipating means (4).
10. An optical projection device as claimed in claim 5, characterized in that the second plate (12) is made of a plastic material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210600656.1A CN115047697A (en) | 2022-05-30 | 2022-05-30 | Optical projection equipment |
| PCT/CN2022/101430 WO2023231102A1 (en) | 2022-05-30 | 2022-06-27 | Optical projection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210600656.1A CN115047697A (en) | 2022-05-30 | 2022-05-30 | Optical projection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115047697A true CN115047697A (en) | 2022-09-13 |
Family
ID=83159177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210600656.1A Pending CN115047697A (en) | 2022-05-30 | 2022-05-30 | Optical projection equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115047697A (en) |
| WO (1) | WO2023231102A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873579A (en) * | 2018-06-19 | 2018-11-23 | 青岛海信激光显示股份有限公司 | projection device |
| US20200081331A1 (en) * | 2018-09-07 | 2020-03-12 | Coretronic Corporation | Heat dissipation module and projection apparatus |
| CN112505995A (en) * | 2020-12-15 | 2021-03-16 | 青岛海信激光显示股份有限公司 | Laser projection lens and laser projection equipment |
| CN112835252A (en) * | 2021-01-18 | 2021-05-25 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN113917769A (en) * | 2021-06-23 | 2022-01-11 | 深圳市安华光电技术有限公司 | Projection light machine and projection equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003337380A (en) * | 2002-05-21 | 2003-11-28 | Sharp Corp | Projection type display |
| CN101726819B (en) * | 2008-10-16 | 2013-04-24 | 鸿富锦精密工业（深圳）有限公司 | Lens combination structure and projection device applying lens combination structure |
| JP2016001270A (en) * | 2014-06-12 | 2016-01-07 | 株式会社リコー | Optical unit and image projection device |
| CN112631053B (en) * | 2021-03-06 | 2021-12-07 | 深圳市源广浩电子有限公司 | DLP projection device |
| CN216118354U (en) * | 2021-08-13 | 2022-03-22 | 深圳市火乐科技发展有限公司 | Projection equipment and projection optical machine and heat dissipation structure thereof |
-
2022
- 2022-05-30 CN CN202210600656.1A patent/CN115047697A/en active Pending
- 2022-06-27 WO PCT/CN2022/101430 patent/WO2023231102A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873579A (en) * | 2018-06-19 | 2018-11-23 | 青岛海信激光显示股份有限公司 | projection device |
| US20200081331A1 (en) * | 2018-09-07 | 2020-03-12 | Coretronic Corporation | Heat dissipation module and projection apparatus |
| CN112505995A (en) * | 2020-12-15 | 2021-03-16 | 青岛海信激光显示股份有限公司 | Laser projection lens and laser projection equipment |
| CN112835252A (en) * | 2021-01-18 | 2021-05-25 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN113917769A (en) * | 2021-06-23 | 2022-01-11 | 深圳市安华光电技术有限公司 | Projection light machine and projection equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023231102A1 (en) | 2023-12-07 |
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