Laser projection equipment

Abstract

The present application discloses a laser projection device, which belongs to the field of laser projection technology. The laser projection device includes: a first shell, a second shell, and a position adjustment component located between the first shell and the second shell. When the assembly accuracy between the lens in the first shell and the optical engine in the second shell does not meet the design requirements, the distance between the first shell and the second shell can be adjusted by the position adjustment component, so that the distance between the lens in the first shell and the optical engine in the second shell is the same as the distance between the two when the laser projection device is designed, thereby ensuring that the illumination beam provided by the optical engine can be accurately shot into the lens, effectively improving the display effect of the picture projected by the laser projection device.

Description

Technical Field

[0001] The present application relates to the field of laser projection technology, and in particular to a laser projection device. Background Art

[0002] The laser projection system includes a projection screen and a laser projection device. The laser projection device can project images onto the projection screen to achieve functions such as video playback.

[0003] The laser projection device may include: a light source, an optical engine and a lens. The optical engine may modulate the illumination beam provided by the light source. The lens may project the illumination beam modulated by the optical engine into an image. The laser projection device may also include: a first housing for carrying the lens, and a second housing for carrying the optical engine. The second housing has a supporting surface, and the first housing may be fixed on the supporting surface of the second housing to realize the assembly of the lens and the optical engine.

[0004] In order to improve the display effect of the image projected by the laser projection device, it is necessary to improve the assembly accuracy of the lens and the optical engine to ensure that the optical engine can accurately shoot the illumination beam into the lens. To this end, it is necessary to ensure that the distance between the lens and the optical engine after assembly is consistent with the distance between the two when the laser projection device is designed. However, due to the processing error between the first shell and the second shell during processing, the distance between the lens and the optical engine is different from the designed distance after the first shell and the second shell are connected, which leads to poor display effect of the image projected by the laser projection device. Summary of the invention

[0005] The embodiment of the present application provides a laser projection device, which can solve the problem of poor display effect of the images projected by the laser projection device in the prior art. The technical solution is as follows:

[0006] A laser projection device is provided, comprising:

[0007] A first housing, wherein the first housing is used to carry a lens;

[0008] A second housing, the second housing being used to carry the optical engine;

[0009] And, a position adjustment component is located between the first shell and the second shell, the position adjustment component is connected to the first shell and the second shell respectively, and the position adjustment component is configured to: adjust the distance between the first shell and the second shell.

[0010] The beneficial effects of the technical solution provided by the embodiment of the present application are:

[0011] The laser projection device may include: a first shell, a second shell, and a position adjustment component located between the first shell and the second shell. When the assembly accuracy between the lens in the first shell and the optical engine in the second shell does not meet the design requirements, the distance between the first shell and the second shell can be adjusted by the position adjustment component so that the distance between the lens in the first shell and the optical engine in the second shell is the same as the distance between the two when the laser projection device is designed, thereby ensuring that the illumination light beam provided by the optical engine can be accurately shot into the lens, effectively improving the display effect of the picture projected by the laser projection device. In addition, when correcting the lens and the optical engine that do not meet the assembly accuracy, there is no need to remove the first shell from the second shell, which effectively improves the efficiency of correcting the assembly accuracy between the lens in the first shell and the optical engine in the second shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 is a structural schematic diagram of a laser projection device provided in an embodiment of the present application;

[0014] Figure 2 is a schematic structural diagram of another laser projection device provided in an embodiment of the present application;

[0015] Figure 3 yes Figure 2 An exploded view of a laser projection device is shown;

[0016] Figure 4 is a schematic diagram of a movable connecting member provided in an embodiment of the present application being connected to a first housing;

[0017] Figure 5 is a structural schematic diagram of a second shell provided in an embodiment of the present application;

[0018] Figure 6 It is a structural schematic diagram of a movable connecting member provided in an embodiment of the present application;

[0019] Figure 7 This is a schematic diagram of a support column on a second housing provided by an embodiment of the present application being connected to a movable connecting piece;

[0020] Figure 8 It is a structural schematic diagram of a laser projection system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0022] In the related art, after the first shell in the laser projection device is fixed on the supporting surface of the second shell, if the assembly accuracy between the lens in the first shell and the optical engine in the second shell does not meet the design requirements due to the processing error between the first shell and the second shell during processing, there are the following two correction methods:

[0023] The first correction method is that when the distance between the lens in the first shell and the optical engine in the second shell is smaller than the distance between the two when the laser projection equipment is designed, the first shell needs to be removed from the supporting surface of the second shell, and after adding a gasket between the first shell and the second shell, the first shell needs to be reinstalled on the supporting surface of the second shell, so that the distance between the lens in the first shell and the optical engine in the second shell is the same as the distance between the two when the laser projection equipment is designed.

[0024] The second correction method is that when the distance between the lens in the first shell and the optical engine in the second shell is greater than the distance between the two when the laser projection equipment is designed, the first shell needs to be removed from the supporting surface of the second shell, and the supporting surface of the second shell needs to be re-machined, and then the first shell needs to be re-installed on the supporting surface of the second shell, so that the distance between the lens in the first shell and the optical engine in the second shell is the same as the distance between the two when the laser projection equipment is designed.

[0025] In the related art, when the assembly accuracy between the lens in the first shell and the optical engine in the second shell does not meet the design requirements, the first shell needs to be disassembled from the second shell during the correction process, resulting in low efficiency in correcting the assembly accuracy between the lens in the first shell and the optical engine in the second shell.

[0026] Please refer to Figure 1 , Figure 1 00 is a schematic diagram of the structure of a laser projection device provided in an embodiment of the present application. The laser projection device 00 may include:

[0027] A first housing 100 , a second housing 200 and a position adjustment assembly 300 .

[0028] The first housing 100 is used to carry a lens, and the second housing 200 is used to carry an optical engine. The position adjustment component 300 may be located between the first housing 100 and the second housing 200, and the position adjustment component is connected to the first housing 100 and the second housing 200, respectively.

[0029] The position adjustment component 300 is configured to adjust the distance between the first shell 100 and the second shell 200 .

[0030] In the embodiment of the present application, the first housing 100 can be connected to the second housing 200 through the position adjustment component 300, so that the assembly between the lens in the first housing 100 and the optical engine in the second housing 200 can be achieved. If the assembly accuracy between the lens in the first housing 100 and the optical engine in the second housing 200 does not meet the design requirements due to the processing error existing in the processing of the first housing 100 and the second housing 200, the embodiment of the present application can be corrected by the following two correction methods:

[0031] The first correction method is that when the distance between the lens in the first shell 100 and the optical engine in the second shell 200 is smaller than the distance between the two when the laser projection device 00 is designed, the distance between the first shell 100 and the second shell 200 can be increased by the position adjustment component 300, so that the distance between the lens in the first shell 100 and the optical engine in the second shell 200 is the same as the distance between the two when the laser projection device 00 is designed.

[0032] The second correction method is that when the distance between the lens in the first shell 100 and the optical engine in the second shell 200 is greater than the distance between the two when the laser projection device 00 is designed, the distance between the first shell 100 and the second shell 200 can be reduced by the position adjustment component 300, so that the distance between the lens in the first shell 100 and the optical engine in the second shell 200 is the same as the distance between the two when the laser projection device 00 is designed.

[0033] In the above two correction methods, there is no need to disassemble the first shell 100 from the second shell 200, so as to achieve the correction of the assembly accuracy between the lens in the first shell 100 and the optical engine in the second shell 200, which effectively improves the efficiency of correcting the assembly accuracy between the lens in the first shell 100 and the optical engine in the second shell 200.

[0034] In summary, the laser projection device provided in the embodiment of the present application includes: a first shell, a second shell, and a position adjustment component located between the first shell and the second shell. When the assembly accuracy between the lens in the first shell and the optical engine in the second shell does not meet the design requirements, the distance between the first shell and the second shell can be adjusted by the position adjustment component so that the distance between the lens in the first shell and the optical engine in the second shell is the same as the distance between the two when the laser projection device is designed, thereby ensuring that the illumination light beam provided by the optical engine can be accurately shot into the lens, effectively improving the display effect of the picture projected by the laser projection device. In addition, when correcting the lens and the optical engine that do not meet the assembly accuracy, there is no need to remove the first shell from the second shell, which effectively improves the efficiency of correcting the assembly accuracy between the lens in the first shell and the optical engine in the second shell.

[0035] In the embodiments of the present application, Figure 2 and 3 As shown, Figure 2 is a schematic diagram of the structure of another laser projection device provided in an embodiment of the present application, Figure 3 yes Figure 2 The exploded view of the laser projection device is shown. The position adjustment assembly 300 in the laser projection device 00 may include: a support column 301 and a movable connection member 302 connected to the support column 301 .

[0036] The support column 301 may be located on the second shell 200 , and the support column 301 may be fixedly connected to the second shell 200 .

[0037] The movable connecting member 302 has a supporting surface 302 a. The supporting surface 302 a of the movable connecting member 302 can be connected to the first housing 100.

[0038] In the embodiment of the present application, the movable connecting member 302 is configured to move on the support column 301 along the length direction of the support column 301 to adjust the distance between the supporting surface 302a of the movable connecting member 302 and the second shell 200, thereby adjusting the distance between the first shell 100 and the second shell 200.

[0039] For example, the support column 301 in the position adjustment component 300 has a first external thread, and the movable connecting member 302 in the position adjustment component 300 has a first internal thread that matches the first external thread. For example, the support column 301 may be cylindrical in shape, and the first external thread may be located on the outer wall of the support column 301; the movable connecting member 302 may have a first opening 3021 that matches the shape of the support column 301, and the first internal thread may be located on the inner wall of the first opening 3021.

[0040] The movable connecting member 302 can be threadedly connected to the support column 301. In this way, when the movable connecting member 302 rotates around the axis of the support column 301, the movable connecting member 302 can move along the length direction of the support column 301.

[0041] It should be noted that the length direction of the support column 301 in the present application is the direction in which the first shell 100 or the second shell 200 moves when the position adjustment component 300 adjusts the distance between the first shell 100 and the second shell 200. Due to the relative positional relationship between the first shell 100 and the second shell 200, it is usually necessary to adjust the direction of the optical axis of the illumination light beam emitted by the optical engine in the second shell 200. Therefore, the length direction of the support column 301 needs to be parallel to the direction of the optical axis of the illumination light beam emitted by the optical engine in the second shell 200. Usually, the direction of the optical axis of the illumination light beam emitted by the optical engine in the second shell 200 is perpendicular to the side of the second shell 200 connected to the support column 301. Therefore, the length direction of the support column 301 is also perpendicular to the side of the second shell 200 connected to the support column 301.

[0042] In the embodiment of the present application, there are multiple ways to connect the movable connecting member 302 and the first housing 100. The embodiment of the present application uses the following two optional implementations as examples for schematic illustration:

[0043] In the first optional implementation, Figure 4 As shown, Figure 4 1 is a schematic diagram of a movable connecting member connected to a first housing provided in an embodiment of the present application. The movable connecting member 302 may be a cylindrical structure, and a side of the first housing 100 close to the second housing has a blind hole 101 matching the shape of the movable connecting member 302. The movable connecting member 302 may be located in the blind hole and may be connected to the first housing 100 through a rotating bearing A.

[0044] For example, the rotary bearing A has an inner ring A1, an outer ring A2, and a plurality of balls A3 located at the inner ring A1 and the outer ring A2 and used to connect the inner ring A1 and the outer ring A2. The outer ring A2 of the rotary bearing A can be fixedly connected to the inner wall of the blind hole 101, and the inner ring A1 of the rotary bearing can be fixedly connected to the outer wall of the movable connecting member 302. Since the inner ring A1 and the outer ring A2 of the rotary bearing A can rotate relative to each other through the plurality of balls A3 located therebetween, after the movable connecting member 302 is connected to the first housing 100 through the rotary bearing A, the movable connecting member 302 can rotate freely in the blind hole 101 in the first housing 100, but the movable connecting member 302 will not move in a direction perpendicular to the rotation plane of the movable connecting member 302.

[0045] In the embodiment of the present application, the support surface 302a of the movable connecting member 302 is located in the blind hole 101 in the first housing 100. After the movable connecting member 302 is connected to the first housing 100 through the rotary bearing A and the movable connecting member 302 is connected to the support column 301, the first housing 100 and the second housing 200 can be connected.

[0046] In this case, when the assembly accuracy between the lens in the first housing 100 and the optical engine in the second housing 200 does not meet the design requirements, the assembly accuracy between the lens in the first housing 100 and the optical engine in the second housing 200 is corrected as follows:

[0047] If the distance between the lens in the first housing 100 and the optical engine in the second housing 200 is smaller than the distance between the two when the laser projection device 00 is designed, the operator can manipulate the movable connection member 302 in the position adjustment assembly 300 to rotate on the support column 301, so that the movable connection member 302 can move on the support column 301 in a direction away from the second housing 200. In this way, the movable connection member 302 can drive the first housing 100 to move in a direction away from the second housing 200 to increase the distance between the first housing 100 and the second housing 200, so that the distance between the lens in the first housing 100 and the optical engine in the second housing 200 is the same as the distance between the two when the laser projection device 00 is designed, thereby completing the correction of the assembly accuracy between the lens in the first housing 100 and the optical engine in the second housing 200.

[0048] If the distance between the lens in the first housing 100 and the optical engine in the second housing 200 is greater than the distance between the two when the laser projection device 00 is designed, the operator can manipulate the movable connection member 302 in the position adjustment assembly 300 to rotate on the support column 301, so that the movable connection member 302 can move on the support column 301 in a direction close to the second housing 200. In this way, the movable connection member 302 can drive the first housing 100 to move in a direction close to the second housing 200 to reduce the distance between the first housing 100 and the second housing 200, so that the distance between the lens in the first housing 100 and the optical engine in the second housing 200 is the same as the distance between the two when the laser projection device 00 is designed, thereby completing the correction of the assembly accuracy between the lens in the first housing 100 and the optical engine in the second housing 200.

[0049] In the second alternative implementation, Figure 2 and 3As shown, the position adjustment component 300 in the laser projection device 00 may also include: a fastener 303. The first housing 100 in the laser projection device 00 has a through hole 102 that matches the fastener 303. The first end of the fastener 303 has a fastening piece 303a for clamping with the first housing 100, and the second end of the fastener 303 can pass through the through hole 102 on the first housing 100 and then connect with the support column 301.

[0050] For example, the fastener 302 in the position adjustment component 300 has a second external thread, and the support column 301 in the position adjustment component 300 has a second internal thread that matches the second external thread. For example, the fastener 302 can be a screw; Figure 5 As shown, Figure 5 It is a structural schematic diagram of a second shell provided in an embodiment of the present application. The support column 301 on the second shell 200 may have a second opening 301a that matches the shape of the fastener 302, and the second internal thread may be located on the inner wall of the second opening 301a.

[0051] The fastener 302 can be threadedly connected to the support column 301. In this way, the fastener 302 can be fastened to the support column 301 by threading.

[0052] In the embodiment of the present application, the supporting surface 302a of the movable connecting member 302 can abut against the first shell 100, and after the fastener 303 is fastened to the supporting column 301, the first shell 100 and the second shell 200 can be fastened together.

[0053] It should be noted that if Figure 5 As shown, the support column 301 on the second shell 200 has both an external thread (i.e., a first external thread) and an internal thread (i.e., a second external thread). Therefore, the support column 301 can be a cylindrical structure, and the external thread of the support column 301 can be distributed on the outer wall of the support column 301, and the internal thread of the support column can be distributed on the inner wall of the support column 301.

[0054] In this case, when the assembly accuracy between the lens in the first housing 100 and the optical engine in the second housing 200 does not meet the design requirements, the assembly accuracy between the lens in the first housing 100 and the optical engine in the second housing 200 is corrected as follows:

[0055] If the distance between the lens in the first shell 100 and the optical engine in the second shell 200 is smaller than the distance between the two when the laser projection device 00 is designed, first, the operator can loosen the fastener 302 and manipulate the first shell 100 to move away from the second shell 200, so that there is a certain distance between the first shell 100 and the movable connection 302 in the position adjustment assembly 300; then, the operator can manipulate the movable connection 302 to rotate on the support column 301, so that the movable connection 302 can move on the support column 301 in the direction away from the second shell 200; finally, the operator can tighten the fastener 302 so that the first shell 100 abuts against the supporting surface 302a of the movable connection 302. In this way, the distance between the first shell 100 and the second shell 200 can be increased, so that the distance between the lens in the first shell 100 and the optical engine in the second shell 200 is the same as the distance between the two when the laser projection device 00 is designed, thereby completing the correction of the assembly accuracy between the lens in the first shell 100 and the optical engine in the second shell 200.

[0056] If the distance between the lens in the first shell 100 and the optical engine in the second shell 200 is greater than the distance between the two when the laser projection device 00 is designed, first, the operator can loosen the fastener 302 and manipulate the first shell 100 to move away from the second shell 200, so that there is a certain distance between the first shell 100 and the movable connection 302 in the position adjustment assembly 300; then, the operator can manipulate the movable connection 302 to rotate on the support column 301, so that the movable connection 302 can move on the support column 301 in a direction close to the second shell 200; finally, the operator can tighten the fastener 302 so that the first shell 100 abuts against the supporting surface 302a of the movable connection 302. In this way, the distance between the first shell 100 and the second shell 200 can be reduced, so that the distance between the lens in the first shell 100 and the optical engine in the second shell 200 is the same as the distance between the two when the laser projection device 00 is designed, thereby completing the correction of the assembly accuracy between the lens in the first shell 100 and the optical engine in the second shell 200.

[0057] The above two optional implementation methods have the following two advantages compared with related technologies:

[0058] On the one hand, in the related art, when the distance between the lens in the first shell and the optical engine in the second shell is smaller than the distance between the two when the laser projection device is designed, the first shell needs to be disassembled from the second shell, and after adding a gasket between the first shell and the second shell, the first shell needs to be reinstalled on the second shell. Since the thickness of the gasket between the first shell and the second shell is usually fixed, when the distance between the first shell and the second shell needs to be increased, only the fixed distance between the first shell and the second shell can be increased, and the distance between the first shell and the second shell cannot be continuously adjusted, resulting in low accuracy in adjusting the distance between the first shell and the second shell.

[0059] In the above two optional implementations, when the distance between the lens in the first housing 100 and the optical engine in the second housing 200 is smaller than the distance between the two when the laser projection device 00 is designed, it is not necessary to remove the first housing 100 from the second housing 200. It is only necessary to rotate the movable connecting member 302 on the support column 301 so that the movable connecting member 302 can move on the support column 301 in a direction away from the second housing 200, so as to increase the distance between the first housing 100 and the second housing 200. Since the movable connecting member 302 can move to any position on the support column 301, the distance between the first housing 100 and the second housing 200 can be continuously adjusted, which effectively improves the accuracy of adjusting the distance between the first housing 100 and the second housing 200.

[0060] Secondly, in the related art, when the distance between the lens in the first housing and the optical engine in the second housing is greater than the distance between the two when the laser projection device is designed, the first housing needs to be disassembled from the second housing, and the supporting surface of the second housing needs to be re-machined before the first housing is re-installed on the second housing. This requires secondary processing of the second housing, which makes the processing of the laser projection device more difficult and leads to low efficiency in assembling the laser projection device.

[0061] In the above two optional implementations, when the distance between the lens in the first housing 100 and the optical engine in the second housing 200 is greater than the distance between the two when the laser projection device 00 is designed, it is not necessary to remove the first housing 100 from the second housing 200. It is only necessary to rotate the movable connecting member 302 on the support column 301 so that the movable connecting member 302 can move on the support column 301 in a direction close to the second housing 200, so as to reduce the distance between the first housing 100 and the second housing 200. In this way, the second housing 200 only needs to be die-cast on one side. Even if there is a processing error in the second housing 200, there is no need to perform secondary processing on the second housing 200, which effectively reduces the processing difficulty of the laser projection device 00 and improves the efficiency of assembling the laser projection device 00.

[0062] In the embodiment of the present application, in order to allow the operator to more conveniently control the movable connecting member 302 to rotate on the support column 301, as shown in FIG. Figure 6 As shown, Figure 6 302 is a schematic diagram of a structure of a movable connecting member provided in an embodiment of the present application. The movable connecting member 302 may be cylindrical in shape, and a plurality of engaging holes 3022 are provided on the side wall of the movable connecting member 302. For example, Figure 7 As shown, Figure 7 It is a schematic diagram of a support column on a second shell provided in an embodiment of the present application after being connected to a movable connecting piece. An operator can use a special tool (for example, an L-shaped wrench) that is engaged with the engaging hole 3022 to control the movable connecting piece 3022 to rotate on the support column 301.

[0063] Optional, such as Figure 6 and Figure 7 As shown, the movable connecting member 302 may be in the shape of a hexagonal prism, and each side wall of the movable connecting member 302 has a snap-in hole 3022. Thus, when the movable connecting member 302 rotates on the support column 301, when it rotates to any position, a special tool can be inserted into the snap-in hole 3022 in the movable connecting member 302, so that the operator can more conveniently control the movable connecting member 302 to rotate on the support column 301.

[0064] In the embodiment of the present application, the height of the movable connecting member 302 in the position adjustment assembly 300 is greater than or equal to the length of the support column 301. The height direction of the movable connecting member 302 is parallel to the length direction of the support column 301. In this way, when the side of the movable connecting member 302 away from the support surface 302a contacts the second shell 200, the distance between the first shell 100 and the second shell 200 is the smallest; for the first optional implementation method mentioned above, when the distance between the side of the movable connecting member 302 away from the support surface 302a and the second shell 200 reaches the limit distance, the distance between the first shell 100 and the second shell 200 is the largest, wherein the limit distance is the maximum distance at which the movable connecting member 302 does not fall off the support column 301; for the second optional implementation method mentioned above, when the side of the movable connecting member 302 away from the support surface 302a contacts the side of the support column 301 away from the second shell 200, the distance between the first shell 100 and the second shell 200 is the largest.

[0065] Optionally, the laser projection device 00 may include: a plurality of support columns 301, a plurality of movable connecting members 302, and a plurality of fasteners 303. Each support column 301 is respectively connected to a corresponding movable connecting member 302 and a corresponding fastener 303. Thus, through the plurality of support columns 301, the plurality of movable connecting members 302, and the plurality of fasteners 303, the stability when adjusting the distance between the first shell 100 and the second shell 200 can be effectively improved.

[0066] In the embodiments of the present application, Figure 3 , Figure 5 and Figure 7 As shown, the first housing 100 has at least one positioning post 103, and the second housing 200 has at least one positioning hole 201 corresponding to the at least one positioning post 103. The first end of each positioning post 103 is located in the corresponding alignment hole 201. Through the cooperation between the positioning post 103 and the alignment hole 201, the first housing 100 and the second housing 200 can be assembled without falling off the second housing 200, so that the first housing 100 can be easily fixed to the second housing 200.

[0067] Optionally, the laser projection device in the embodiment of the present application may further include: a light source assembly, an optical engine located in the second shell 200 , and a lens located in the first shell 100 .

[0068] For example, the light source may include: a laser, a fluorescent wheel, a color filter wheel, and a reflective component. The laser may be a blue laser. After the blue laser emits blue light, it generates red light and green light through the fluorescent wheel. After that, the blue light, red light, and green light may pass through the color filter wheel and then be reflected to the optical engine through the reflective component.

[0069] The optical engine includes: a light adjustment component, a prism component, and a digital micromirror device (DMD) light valve, etc. The light adjustment component can receive the illumination beam provided by the light source component and inject the illumination beam into the prism component; the prism component can receive the illumination beam emitted from the light adjustment component and inject the illumination beam emitted from the light adjustment component into the light receiving surface of the DMD light valve after two reflections; the DMD light valve can modulate the illumination beam emitted from the prism component based on the image signal and reflect the modulated illumination beam to the lens.

[0070] The lens may include: a plurality of lens groups, each of which may be composed of lenses such as convex lenses and concave lenses. The illumination light beam reflected by the DMD light valve in the optical engine may be projected into an image through the plurality of lens groups.

[0071] In summary, the laser projection device provided in the embodiment of the present application includes: a first shell, a second shell, and a position adjustment component located between the first shell and the second shell. When the assembly accuracy between the lens in the first shell and the optical engine in the second shell does not meet the design requirements, the distance between the first shell and the second shell can be adjusted by the position adjustment component so that the distance between the lens in the first shell and the optical engine in the second shell is the same as the distance between the two when the laser projection device is designed, thereby ensuring that the illumination light beam provided by the optical engine can be accurately shot into the lens, effectively improving the display effect of the picture projected by the laser projection device. In addition, when correcting the lens and the optical engine that do not meet the assembly accuracy, there is no need to remove the first shell from the second shell, which effectively improves the efficiency of correcting the assembly accuracy between the lens in the first shell and the optical engine in the second shell.

[0072] The present application also provides a laser projection system. Figure 8 As shown, Figure 8 1 is a schematic diagram of the structure of a laser projection system provided in an embodiment of the present application. The laser projection system may include: a laser projection device 00 and a projection screen 01. The laser projection device 00 may be the laser projection device shown in the above embodiment. The laser projection device 00 may emit light obliquely upward, so that the laser projection device 001 may project a picture onto the projection screen 01.

[0073] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0074] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A laser projection device, characterized in that: include: A first housing, wherein the first housing is used to carry a lens; A second housing, the second housing being used to carry the optical engine; and, a position adjustment component located between the first shell and the second shell, the position adjustment component being connected to the first shell and the second shell respectively, the position adjustment component being configured to: adjust the distance between the first shell and the second shell; The position adjustment assembly comprises: a support column located on the second housing, and a movable connecting member connected to the support column, wherein the movable connecting member has a supporting surface, and the supporting surface of the movable connecting member is connected to the first housing; The movable connecting member is configured to: move on the supporting column along the length direction of the supporting column to adjust the distance between the supporting surface of the movable connecting member and the second shell; The support column has a first external thread, the movable connecting piece has a first internal thread matching the first external thread, and the movable connecting piece is threadedly connected to the support column; The position adjustment component also includes: a fastener, the first shell has a through hole that cooperates with the fastener, the first end of the fastener has a fastening plate for clamping with the first shell, and the second end of the fastener passes through the through hole and is connected to the support column.

2. The laser projection device according to claim 1, characterized in that: The fastener has a second external thread, the support column has a second internal thread matching the second external thread, and the fastener is threadedly connected to the support column.

3. The laser projection device according to claim 1 or 2, characterized in that: The movable connecting piece is in the shape of a column, and a plurality of clamping holes are arranged on the side wall of the movable connecting piece.

4. The laser projection device according to claim 3, characterized in that: The movable connecting piece is in the shape of a hexagonal prism, and each side wall of the movable connecting piece is provided with a clamping hole.

5. The laser projection device according to claim 4, characterized in that: The height of the movable connecting member is greater than or equal to the length of the supporting column, and the height direction of the movable connecting member is parallel to the length direction of the supporting column.

6. The laser projection device according to claim 4 or 5, characterized in that: The laser projection device comprises a plurality of the supporting columns, a plurality of the movable connecting members and a plurality of the fastening members, and each of the supporting columns is respectively connected to a corresponding movable connecting member and a corresponding fastening member.

7. The laser projection device according to claim 1 or 2, characterized in that: The first shell has at least one positioning post, and the second shell has at least one positioning hole corresponding to the at least one positioning post, and one end of each positioning post is located in the corresponding positioning hole.

Images