Laser projector

Abstract

The utility model provides a laser projector, which comprises a projector main body, and the projector main body comprises a projector housing; the optical module is installed in the projector shell, the optical module comprises a laser module, an optical lens and a prism assembly, the laser module, the optical lens and the prism assembly are linearly arranged on a light source channel of the laser projector, and an optical prism is installed on the prism assembly; the light shield is installed on the projector shell, a glass plate is installed on the light shield, projection patterns are arranged on the glass plate, and laser beams emitted by the laser module sequentially pass through the optical lens, the optical prism and the glass plate and then project the projection patterns on the glass plate out. Patterns are projected through the laser projector, so that the marks can be projected to the preset surface, the marks can be kept clear for a long time, compared with paint marks, the marks do not need to be maintained and re-sprayed regularly through laser projection, and the marks can be projected to soil or uneven ground.

Description

Technical Field

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

[0002] Safety zones, parking lots, and other marking areas are typically achieved by spraying paint. However, paint fades and wears over time, and is also affected by weather conditions, making it difficult to maintain legibility over time. Therefore, regular maintenance and re-painting are necessary. Furthermore, spraying paint cannot be used to mark certain surfaces, such as soil or uneven ground. Therefore, there is an urgent need for a device that can maintain legibility over time and can mark on a variety of surfaces. Summary of the Invention

[0003] The present invention provides a laser projector to solve the problems existing in the related art. The technical solution is as follows:

[0004] An embodiment of the present application provides a laser projector, including a projector body, wherein the projector body includes:

[0005] Projector housing;

[0006] The optical module is installed in the projector housing. The optical module includes a laser module, an optical lens, and a prism assembly. The laser module, the optical lens, and the prism assembly are arranged linearly on the light source channel of the laser projector. The optical prism is installed on the prism assembly;

[0007] The light shield is installed on the projector housing. A glass plate is installed on the light shield. A projection pattern is set on the glass plate. The laser beam emitted by the laser module passes through the optical lens, the optical prism and the glass plate in sequence, and then projects the projection pattern on the glass plate.

[0008] In one embodiment, the projector body further includes:

[0009] The heat sink is installed on the projector housing, the optical module is located inside the heat sink, and the optical module dissipates heat through the heat sink.

[0010] In one embodiment, a projector housing comprises:

[0011] A rear cover is mounted on one end of the heat sink;

[0012] Extension tube, the extension tube is installed at the other end of the heat sink, and the heat sink is located between the rear cover and the extension tube;

[0013] The adjusting tube is movably connected to the extension tube. The adjusting tube can move relative to the extension tube toward or away from the prism assembly. The extension tube is located between the adjusting tube and the heat sink. The light shield is installed on the adjusting tube.

[0014] In one embodiment, the projector body further includes a power module and an input cable. The power module is installed in the back cover. The input cable is electrically connected to the power module. The power module is electrically connected to the laser module. The power module supplies power to the laser module.

[0015] In one embodiment, the optical module also includes an optical base and an adjustment assembly. The laser module is installed on the optical base. The adjustment assembly and the optical lens are movably arranged on the optical base. The adjustment assembly drives the optical lens to move between the laser module and the prism assembly. The prism assembly is rotatably connected to the optical base.

[0016] In one embodiment, an optical housing is mounted on the optical base, and the optical lens is located inside the optical housing; the adjustment assembly includes an adjustment sleeve, an adjustment nut and a threaded pin, the adjustment sleeve and the adjustment nut are both sleeved on the optical housing, the adjustment nut is located between the outer circumference of the optical housing and the adjustment sleeve, the adjustment sleeve is rotatably connected to the optical housing through an anti-friction bushing, the adjustment sleeve is threadedly connected to the adjustment nut, and the adjustment nut is connected to the outer shell of the optical lens through the threaded pin.

[0017] In one embodiment, a limiting groove extending along the axial direction of the optical housing is provided on the optical housing, the threaded pin is located in the limiting groove, and the adjusting nut drives the threaded pin to move in the limiting groove; an elastic member is also provided in the optical housing, the elastic member is located between the optical lens and the prism assembly, one end of the elastic member is against the outer shell of the optical lens, and the other end of the elastic member is against the outer shell of the prism assembly.

[0018] In one embodiment, the prism assembly is mounted on an end of the optical housing away from the optical base. The prism assembly can rotate relative to the optical housing. A fastener is provided on the optical housing, and an end of the fastener abuts against an outer shell of the prism assembly.

[0019] In one embodiment, the laser projector further includes a mounting assembly, the mounting assembly includes a mounting base, and the heat sink is movably hinged to the mounting base.

[0020] In one embodiment, the number of projector bodies is at least two, and the laser projector further includes a mounting assembly, which includes a mounting base and a conversion plate. The two projector bodies are stacked up and down, and the heat dissipation parts of the two projector bodies are movably hinged to the conversion plate, and the conversion plate is movably hinged to the mounting base.

[0021] The advantages or beneficial effects of the above technical solution include at least:

[0022] The laser projector of the embodiment of the present application includes a projector body, which includes a projector housing, an optical module, and a light shield. The optical module includes a laser module, an optical lens, and a prism assembly. A glass plate is mounted on the light shield, and a projection pattern is provided on the glass plate. When the laser projector is in operation, the laser module emits a laser beam, which is focused by the optical lens and then adjusted in direction and angle by the prism assembly, and finally the projection pattern on the glass plate is projected onto a predetermined surface. The embodiment of the present application projects a pattern through a laser projector, so that a mark can be projected onto a predetermined surface, and the mark can remain clear for a long time. Compared with paint marking, laser projection does not require regular maintenance and re-spraying of the mark, and can be projected onto soil or uneven ground.

[0023] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0025] Figure 1 Schematic diagram of the structure of a laser projector;

[0026] Figure 2 The figure is an exploded view of the projector body of the laser projector;

[0027] Figure 3 is a first cross-sectional view of the optical module;

[0028] Figure 4 is a second cross-sectional view of the optical module;

[0029] Figure 5 is a schematic diagram of an optical module;

[0030] Figure 6 is a third cross-sectional view of the optical module;

[0031] Figure 7 is a fourth cross-sectional view of the optical module;

[0032] Figure 8 Exploded view of the installed components;

[0033] Figure 9 This is a schematic structural diagram of a laser projector according to the second embodiment.

[0034] Description of reference numerals:

[0035] 1. Projector body; 11. Projector housing; 12. Optical module; 13. Light shield; 120. Laser module; 121. Optical lens; 122. Prism assembly; 1221. Optical prism; 14. Glass plate; 15. Heat sink; 110. Back cover; 111. Extension tube; 112. Adjustment tube; 16. Power module; 17. Input cable; 18. Control switch; 19. Lock nut; 125. Optical base; 126. Adjustment assembly; 127. Optical housing; 1271. Limiting groove; 1261. Adjustment sleeve. 1262. Adjusting nut; 1263. Threaded pin; 1264. Anti-friction bushing; 128. Elastic member; 129. End cover; 1291. Fastening hole; 1292. Fastener; 2. Mounting assembly; 21. Mounting base; 210. Base bottom plate; 211. Base side plate; 212. Fixing hole; 213. Adjusting slot; 22. Mounting lock; 220. Semicircular lock; 23. Conversion plate; 230. First hinge; 231. Second hinge; 232. Third hinge; 123. First screw; 124. Second screw. DETAILED DESCRIPTION

[0036] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0037] Example 1:

[0038] like Figures 1 to 7 As shown, an embodiment of the present application provides a laser projector, comprising a projector body 1, which includes a projector housing 11, an optical module 12, and a light shield 13. The optical module 12 is mounted within the projector housing 11 and includes a laser module 120, an optical lens 121, and a prism assembly 122. The laser module 120, the optical lens 121, and the prism assembly 122 are arranged linearly along the light source path of the laser projector, and an optical prism 1221 is mounted on the prism assembly 122. The light shield 13 is mounted on the projector housing 11, and a glass plate 14 is mounted on the light shield 13. The glass plate 14 is provided with a projection pattern. The laser beam emitted by the laser module 120 passes through the optical lens 121, the optical prism 1221 of the prism assembly 122, and the glass plate 14 in sequence, and then projects the projection pattern on the glass plate 14.

[0039] When the laser projector of the embodiment of the present application is in operation, the laser module 120 emits a laser beam. After being focused by the optical lens 121, the laser beam is then adjusted in direction and angle by the prism assembly 122, ultimately projecting the projection pattern on the glass plate 14 onto a predetermined surface. The embodiment of the present application projects a pattern through the laser projector, thereby projecting a mark onto a predetermined surface, and the mark remains clear and long-lasting. Compared to paint marking, laser projection does not require regular maintenance or repainting, and can project onto soil or uneven surfaces.

[0040] The optical lens 121 is used for focusing and calibrating the optical flow of the laser beam and guiding it to the prism assembly 122 . The prism assembly 122 converts the laser beam into a projection line, thereby projecting a projection pattern.

[0041] To dissipate heat from the laser heat sink, the projector body 1 further includes a heat sink 15 mounted on the projector housing 11. The optical module 12 is located within the heat sink 15, and heat is dissipated from the optical module 12 via the heat sink 15. Since the optical module 12 is located within the heat sink 15, heat can be dissipated from the optical module 12 via the heat sink 15 without generating noise.

[0042] The heat sink 15 of the present embodiment can be a natural convection heat sink. A natural convection heat sink has fins made of a material with good thermal conductivity, such as aluminum or copper. The layout and shape of the fins can be similar to those of any existing natural convection heat sink. This arrangement of fins achieves convection heat dissipation. Thermal paste is used to conduct heat between the natural convection heat sink and the optical module 12, allowing for direct heat absorption, improving heat dissipation efficiency, and extending the life of the laser module 120.

[0043] The laser projector dissipates heat through a natural convection radiator. Natural convection radiator is a passive heat dissipation method that eliminates heat dissipation noise. Compared with cooling systems such as cooling fans, it has higher reliability and reduces the problem of overtemperature caused by cooling system failure. It also helps to reduce energy consumption.

[0044] In one embodiment, the projector housing 11 includes a rear cover 110, an extension tube 111, and an adjustment tube 112. The rear cover 110 is mounted on one end of the heat sink 15, and the extension tube 111 is mounted on the other end of the heat sink 15. The heat sink 15 is located between the rear cover 110 and the extension tube 111. The adjustment tube 112 is movably connected to the extension tube 111 and can move relative to the extension tube 111 toward or away from the prism assembly 122. The extension tube 111 is located between the adjustment tube 112 and the heat sink 15, and the light shield 13 is mounted on the adjustment tube 112. Preferably, the rear cover 110 and the heat sink 15, and the heat sink 15 and the extension tube 111 can be fixed by threaded connection or bolted connection, as long as the connection and fixation between the rear cover 110 and the heat sink 15, and between the heat sink 15 and the extension tube 111 can be achieved.

[0045] The projector body 1 also includes a power module 16 and an input cable 17. The power module 16 is installed in the rear cover 110. The input cable 17 is electrically connected to the power module 16, which is in turn electrically connected to the laser module 120. The power module 16 supplies power to the laser module 120. In one embodiment, a control switch 18 may be provided on the input cable 17 to control the power supply to the laser projector. The control switch 18 has a green or red button. When the button is green, the user can press it to turn on the laser projector for laser projection; when the button is red, the user can press it to turn off the laser projector. The power module 16 can be a power module used in existing projectors.

[0046] In order to achieve the movable connection between the adjustment tube 112 and the extension tube 111 , the projector body 1 further includes a locking nut 19 . One end of the adjustment tube 112 is inserted into the extension tube 111 , and the locking nut 19 is movably connected to the adjustment tube 112 and the extension tube 111 .

[0047] In one embodiment, the adjustment tube 112 and the extension tube 111 can be threadedly connected. External threads can be provided on the outer circumference of the extension tube 111. A locking nut 19 is threadedly connected to the external threads on the extension tube 111. The locking nut 19 can be rotated to adjust the preload force, ensuring a secure fixation between the adjustment tube 112 and the extension tube 111. The locking nut 19 can be any commercially available locking nut 19 that can lock the adjustment tube 112 and the extension tube 111.

[0048] With the lock nut 19 unlocked, the adjustment tube 112 can be rotated to move toward or away from the prism assembly 122 relative to the extension tube 111, thereby adjusting the distance between the glass plate 14 and the prism assembly 122 and adjusting the length of the pattern on the glass plate 14. In actual use, optical prisms 1221 with different vertex angles can be selected according to actual needs, such as those with vertex angles of 60°, 70°, 100°, or 110°.

[0049] To facilitate the installation of the glass plate 14 on the sunshade 13, a circle of mounting grooves can be provided inside the sunshade 13. The glass plate 14 is mounted on the sunshade 13 through the mounting grooves, thereby facilitating the installation and removal of the glass plate 14. By installing glass plates 14 with different patterns, different projection patterns can be achieved. The glass plate 14 is a high-temperature resistant glass plate.

[0050] In order to adjust the projected pattern on the glass plate 14 , the light shield 13 is fixed to the extension tube 111 by screws. After loosening the screws, the light shield 13 can be rotated to adjust the angle of the projected pattern on the glass plate 14 .

[0051] The embodiments of the present application can not only adjust the length of the projection line of the projected pattern, but also adjust the width of the projection line of the pattern. To adjust the width of the projection line of the projected pattern, the optical module 12 also includes an optical base 125 and an adjustment assembly 126. The laser module 120 is mounted on the optical base 125, and the laser module 120 can be fixed to the optical base 125 via a flange and screws. The adjustment assembly 126 and the optical lens 121 are movably arranged on the optical base 125. The adjustment assembly 126 drives the optical lens 121 to move between the laser module 120 and the prism assembly 122. The prism assembly 122 is rotatably connected to the optical base 125, and the position of the line on the projection plane can be adjusted by rotating the prism assembly 122.

[0052] In order to adjust the position of the optical lens 121, an optical housing 127 is also installed on the optical base 125. The optical housing 127 can also be fixed to the optical base 125 by screws. The optical lens 121 and the laser module 121 are located inside the optical housing 127, and the optical lens 121 moves inside the optical housing 127.

[0053] The adjustment assembly 126 includes an adjustment sleeve 1261, an adjustment nut 1262, and a threaded pin 1263. Both the adjustment sleeve 1261 and the adjustment nut 1262 are mounted on the optical housing 127, with the adjustment sleeve 1261 positioned between the ends of the optical housing 127. The adjustment nut 1262 is positioned between the outer circumference of the optical housing 127 and the adjustment sleeve 1261. Anti-friction bushings 1264 are provided at each end of the adjustment sleeve 1261, and the adjustment sleeve 1261 is rotatably connected to the optical housing 127 via the anti-friction bushings 1264. The adjustment sleeve 1261 is threadedly connected to the adjustment nut 1262, which is rigidly connected to one end of the threaded pin 1263. The other end of the threaded pin 1263 is rigidly connected to the outer shell of the optical lens 121. Preferably, there are two threaded pins 1263.

[0054] In order to limit the movement of the threaded pin 1263 , a limiting groove 1271 extending along the axial direction of the optical housing 127 is provided on the optical housing 127 . The threaded pin 1263 is located in the limiting groove 1271 , and the adjusting nut 1262 drives the threaded pin 1263 to move in the limiting groove 1271 .

[0055] When the position of the optical lens 121 needs to be adjusted, the adjusting sleeve 1261 is rotated. The adjusting sleeve 1261 drives the adjusting nut 1262 to move axially along the optical housing 127. The adjusting nut 1262 drives the threaded pin 1263 to move axially along the optical housing 127. During the movement, the threaded pin 1263 drives the optical lens 121 connected thereto to move, thereby adjusting the position of the optical lens 121. The movement direction of the optical lens 121 is adjusted by rotating the adjusting sleeve 1261 clockwise or counterclockwise.

[0056] In this embodiment of the present application, an elastic member 128 is further provided within the optical housing 127. One end of the elastic member 128 abuts against the outer shell of the optical lens 121, and the other end of the elastic member 128 abuts against the outer shell of the prism assembly 122. Preferably, the elastic member 128 is a spring, and the laser beam passes through the middle of the spring, so the spring does not affect the transmission of the laser beam.

[0057] To enable rotation of the prism assembly 122, in this embodiment, the prism assembly 122 is mounted on the end of the optical housing 127 away from the optical base 125, allowing the prism assembly 122 to rotate relative to the optical housing 127. An end cap 129 is mounted on one end of the optical housing 127 and is threadedly connected to the optical housing 127. Preferably, the inner circumferential surface of the end cap 129 near the end of the optical housing 127 is provided with internal threads, while the outer circumferential surface of the optical housing 127 is provided with external threads, with the internal threads of the end cap 129 threadedly connected to the external threads of the optical housing 127. A fastening hole 1291 is provided in the end cap 129 along its radial direction. A fastener 1292 is disposed within the fastening hole 1291, and the end of the fastener 1292 abuts against the outer shell of the prism assembly 122. Preferably, the fastener 1292 is a bolt, and multiple fasteners 1292 may be provided. When the prism assembly 122 needs to be rotated, the fastener 1292 is loosened, or the fastener 1292 is removed from the fastening hole 1291, and then the prism assembly 122 is rotated. After the prism assembly 122 is rotated to a suitable position, the prism assembly 122 is fixed by the fastener 1292 abutting against the outer shell of the prism assembly 122.

[0058] In one embodiment, a first screw 123 and a second screw 124 are further provided on the end cap 129. Both the first screw 123 and the second screw 124 are threadedly connected to the end cap 129. One end of the first screw 123 abuts against an anti-friction bushing 1264, thereby preventing the adjustment sleeve 1261 and the anti-friction bushing 1264 from rotating, thereby preventing the optical lens 121 from moving due to vibration when the entire laser projector is installed on a crane or other machine. The second screw 124 abuts against the end of the optical housing 127, thereby preventing the optical housing 127 from loosening.

[0059] This embodiment utilizes a modular design for optical module 12, resulting in a high level of integration. When the projection color needs to be changed, the optical module 12 can be replaced directly, without having to replace the entire projector body 1. This makes changing the projection color much simpler and more convenient. Optical module 12 minimizes assembly steps, reduces technical errors during production and assembly, ensures projection accuracy, and simplifies equipment repair and maintenance.

[0060] In this embodiment, the laser module 120 and the optical lens 121 are installed in the optical housing 127. The optical housing 127 protects the laser module 120 and the optical lens 121 from dust and moisture, thereby extending the service life of the product.

[0061] like Figure 8As shown, in one embodiment, to facilitate installation of the projector body 1, the laser projector further includes a mounting assembly 2, which includes a mounting base 21. The heat sink 15 is movably hinged to the mounting base 21. The mounting base 21 includes a base bottom plate 210 and two base side plates 211. The bottoms of the two base side plates 211 are connected to opposite ends of the base bottom plate 210. The base bottom plate 210 is provided with fixing holes 212 and adjustment slots 213. The mounting base 21 can be mounted on a wall or other equipment through the fixing holes 212 or adjustment slots 213. The adjustment slots 213 are arc-shaped slots provided along the width of the mounting base 21. When the mounting base 21 is mounted on a wall or other equipment through the adjustment slots 213, the angle of the projector body 1 can be adjusted through the adjustment slots 213. This laser projector can be mounted on mobile devices, such as cranes and robotic arms, to display the safe area in real time as the mobile device moves, thereby improving operational flexibility.

[0062] Furthermore, the mounting assembly 2 includes a mounting latch 22 that is locked to the heat sink 15 and is movably hinged to the mounting base 21. The mounting latch 22 includes two semicircular latches 220, each secured by bolts at both ends. One of the semicircular latches 220 is movably hinged to the two base side panels 211 at both ends via a hinge axis, such as a pin. To connect the mounting base 21 to the heat sink 15, the two semicircular latches 220 are placed on the upper and lower sides of the heat sink 15, respectively, and then locked.

[0063] Since the projector body 1 is movably hinged to the mounting base 21, the projector body 1 can rotate 360 ​​degrees around the hinge axis. Since the mounting lock 22 is connected to the heat sink 15, the heat inside the projector body 1 can be transferred to the mounting lock 22 through the heat sink 15, thereby achieving better heat dissipation effect.

[0064] In this embodiment, straight lines, dotted lines, warning signs, and various images can be projected onto the glass plate 14, enabling visual projection of safety zones and warning signs. This laser projector can be used in warehouses, production sites, parking lots, construction sites, and other locations for temporary or permanent marking, work area instructions, and process flow lines.

[0065] Example 2:

[0066] The present embodiment is described in detail below with reference to Example 1:

[0067] This embodiment also discloses a laser projector, which differs from the first embodiment in that:

[0068] like Figure 9As shown, the number of projector bodies 1 in this embodiment is at least two. The laser projector also includes a mounting assembly 2, which includes a mounting base 21 and a conversion plate 23. The two projector bodies 1 are stacked one on top of the other. The heat sinks 15 of the two projector bodies 1 are both hingedly connected to the conversion plate 23, which is in turn hingedly connected to the mounting base 21. The mounting assembly 2 also includes two mounting latches 22. The structures of the two mounting latches 22 are identical to those of the mounting latches 22 in the first embodiment, and the structures of the mounting base 21 are also identical to those of the first embodiment. One of the mounting latches 22 is connected to the heat sink 15 of the lower projector body 1, and the other mounting latch 22 is connected to the heat sink 15 of the upper projector body 1.

[0069] There are two conversion plates 23, each having a first hinge portion 230, a second hinge portion 231, and a third hinge portion 232. One mounting lock 22 is hinged to the first hinge portions 230 of the two conversion plates 23, and the other mounting lock 22 is hinged to the third hinge portions 232 of the two conversion plates 23. The second hinge portions 231 of the two conversion plates 23 are respectively hinged to the two base side panels 211.

[0070] Since the two projector bodies 1 are hinged to the two conversion plates 23, and the two conversion plates 23 are hinged to the mounting base 21, the two projector bodies 1 can be rotated relative to the hinges with the conversion plates 23, and the conversion plates 23 can also be rotated relative to the hinges with the mounting base 21, thereby adjusting the inclination angles of the two projector bodies 1, projecting patterns onto different surfaces, achieving different projection effects, and being suitable for different work scene requirements.

[0071] The number of projector bodies 1 is not limited to two; multiple projector bodies 1 can be stacked one above the other to achieve overlapping projection of images, thereby increasing the brightness and thickness of the projected lines. Furthermore, by simultaneously mounting multiple projector bodies 1 on the same mounting base 21 for projection, high-precision cross-projections can be generated, thereby shortening installation time and reducing installation costs.

[0072] In the description of this specification, the reference terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0073] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0074] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A laser projector, characterized in that: The projector comprises a main body, wherein the main body comprises: Projector housing; An optical module, the optical module being installed in the projector housing, the optical module comprising a laser module, an optical lens, and a prism assembly, the laser module, the optical lens, and the prism assembly being arranged linearly on the light source channel of the laser projector, and the prism assembly being mounted with an optical prism; A light shield is installed on the projector housing, a glass plate is installed on the light shield, and a projection pattern is set on the glass plate. The laser beam emitted by the laser module passes through the optical lens, the optical prism of the optical prism and the glass plate in sequence, and then projects the projection pattern on the glass plate.

2. The laser projector according to claim 1, characterized in that The projector body also includes: A heat sink is installed on the projector housing, the optical module is located inside the heat sink, and the optical module dissipates heat through the heat sink.

3. The laser projector according to claim 2, characterized in that The projector housing comprises: a rear cover mounted on one end of the heat sink; an extension tube, the extension tube being mounted on the other end of the heat sink, the heat sink being located between the rear cover and the extension tube; An adjusting tube is movably connected to the extension tube. The adjusting tube can move relative to the extension tube toward or away from the prism assembly. The extension tube is located between the adjusting tube and the heat sink. The light shield is mounted on the adjusting tube.

4. The laser projector according to claim 3, characterized in that The projector body also includes a power module and an input cable. The power module is installed in the back cover. The input cable is electrically connected to the power module. The power module is electrically connected to the laser module. The power module supplies power to the laser module.

5. The laser projector according to any one of claims 1 to 4, characterized in that: The optical module also includes an optical base and an adjustment component. The laser module is installed on the optical base. The adjustment component and the optical lens are movably arranged on the optical base. The adjustment component drives the optical lens to move between the laser module and the prism component. The prism component is rotatably connected to the optical base.

6. The laser projector according to claim 5, characterized in that An optical housing is mounted on the optical base, and the optical lens is located inside the optical housing; the adjustment assembly includes an adjustment sleeve, an adjustment nut, and a threaded pin, the adjustment sleeve and the adjustment nut are both sleeved on the optical housing, the adjustment nut is located between the outer circumference of the optical housing and the adjustment sleeve, the adjustment sleeve is rotatably connected to the optical housing through an anti-friction bushing, the adjustment sleeve is threadedly connected to the adjustment nut, and the adjustment nut is connected to the outer shell of the optical lens through a threaded pin.

7. The laser projector according to claim 6, characterized in that The optical housing is provided with a limiting groove extending along the axial direction of the optical housing, the threaded pin is located in the limiting groove, and the adjusting nut drives the threaded pin to move in the limiting groove; an elastic member is also provided in the optical housing, the elastic member is located between the optical lens and the prism assembly, one end of the elastic member is against the outer shell of the optical lens, and the other end of the elastic member is against the outer shell of the prism assembly.

8. The laser projector according to claim 6, characterized in that The prism assembly is mounted on one end of the optical housing away from the optical base. The prism assembly can rotate relative to the optical housing. A fastener is provided on the optical housing, and an end of the fastener abuts against an outer shell of the prism assembly.

9. The laser projector according to claim 2, characterized in that: The laser projector further includes a mounting assembly, which includes a mounting base, and the heat sink is movably hinged to the mounting base.

10. The laser projector according to any one of claims 1 to 4, characterized in that: There are at least two projector bodies, and the laser projector further includes a mounting assembly, which includes a mounting base and a conversion plate. The two projector bodies are stacked up one on top of the other, and the heat dissipation parts of the two projector bodies are movably hinged to the conversion plate, and the conversion plate is movably hinged to the mounting base.

Images