Projection device
By using the diffusion surface and light-forming part of the light-forming component in the projection device, the device structure is simplified, the problem of many components in traditional projection devices is solved, and a larger projection range and a larger area of ripple light effect are achieved, creating a realistic atmosphere.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN INTELLIROCKS TECH CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional projection equipment has a complex structure with many components, especially those used to diffuse projection light, which leads to a complex internal structure.
The light-forming component, including a diffusion surface and a light-forming part, is used. The light beam first passes through the diffusion surface and then through the light-forming part, which simplifies the structure and reduces the reliance on optical components such as concave lenses and convex mirrors.
It increases the projection range and light effect coverage area, simplifies the equipment structure, reduces the number of components, forms a larger area of ripple light effect, and creates a more realistic atmosphere.
Smart Images
Figure CN224399730U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of projection device technology, and in particular to a projection device. Background Technology
[0002] With the continuous development of the lighting industry, projection devices have emerged that can project patterns or designs to create environmental ambiance. For example, projection devices can project ripple lighting effects onto a wall to create an atmosphere of being by the water for the user.
[0003] Traditional projection devices have many components for scattering projection light, and their internal structure is relatively complex. Utility Model Content
[0004] This application provides a projection device, which includes a light source and at least one light effect forming member. The light source is used to emit a light beam. The at least one light effect forming member is disposed on the light-emitting side of the light source. The light effect forming member is provided with a light effect forming part for acting on the light beam to form a specified light effect. The side of the light effect forming member facing the light source is provided with a diffusion surface for diffusing the light beam.
[0005] In some optional embodiments, the diffusion surface includes a diffusion concave surface.
[0006] In some optional embodiments, the light source includes multiple light-emitting units, which are arranged sequentially at intervals around a specified axis, and the diffusion concave surface is located in the optical path of the multiple light-emitting units.
[0007] In some optional embodiments, the light effect forming element has a first cross section that coincides with a designated axis, and a first contour line is formed on the first cross section by a diffusion concave surface, the center of curvature of the first contour line being located on the designated axis.
[0008] In some optional embodiments, the diffusion concave surface is arranged around a designated axis; each light-emitting unit has a light axis parallel to the designated axis; the light effect forming element has a second cross section that coincides with the designated axis; the diffusion concave surface forms two second contour lines on the second cross section; the curvature center of each second contour line is spaced apart from the designated axis; and the curvature center of each second contour line coincides with the corresponding light axis.
[0009] In some optional embodiments, the diffusion surface includes multiple diffusion concave surfaces, which are arranged sequentially around a designated axis.
[0010] In some optional embodiments, the light source includes multiple light-emitting units, which are arranged sequentially at intervals around a specified axis; the multiple light-emitting units correspond one-to-one with multiple diffuser concave surfaces.
[0011] In some optional embodiments, each light-emitting unit has an optical axis, the light-forming element has a third cross section that coincides with the designated axis, and the diffusion concave surface forms a third contour line on the third cross section, the center of curvature of the third contour line being located at the optical axis of the light-emitting unit.
[0012] In some optional embodiments, the projection device further includes a driving module; there are multiple light effect forming elements, which are arranged sequentially at intervals along a direction away from the light-emitting side, and all of the multiple light effect forming elements are located in the optical path of the light beam. Among the multiple light effect forming elements, at least one light effect forming element is connected to the driving module and moves under the driving action of the driving module, and there are two light effect forming elements moving relative to each other.
[0013] In some optional embodiments, the projection device further includes a housing and a lampshade. The light source and the light effect forming element are disposed inside the housing, the lampshade is installed in the housing, the light effect forming element is located between the light source and the lampshade, and the lampshade includes a spherical portion. The light beam is transmitted sequentially through the light effect forming element and the spherical portion to be conducted to the outside of the housing.
[0014] This application provides a projection device, which includes a light source and at least one light effect forming element. The light effect forming element is disposed on the light-emitting side of the light source, and the light source is used to emit a light beam to the light effect forming element. In this embodiment, light effect forming portions and diffusion surfaces are respectively provided on opposite sides of the light effect forming element, with the diffusion surface located on the side of the light effect forming element facing the light source. In this embodiment, the light beam is first conducted to the diffusion surface of one of the light effect forming elements and transmitted through the diffusion surface, and then conducted to the light effect forming portion and transmitted through the light effect forming portion. After the light beam is diffused by the diffusion surface, the illumination range of the light beam is larger. After divergence, it is transmitted through the light effect forming portion and forms a wavy light effect, making the projection range of the projection device larger and able to form a large-area wavy light effect. In this embodiment, the projection device does not need to additionally provide optical elements such as concave lenses and convex mirrors for diverging light, which can reduce the number of components of the projection device and simplify the structure of the projection device. Attached Figure Description
[0015] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the projection device provided in the embodiments of this application.
[0017] Figure 2 yes Figure 1 The diagram shows the structure of the lampshade of the projection device.
[0018] Figure 3 yes Figure 1 A schematic diagram of the light source module of the projection device shown.
[0019] Figure 4 yes Figure 1 Another schematic diagram of the light source module of the projection device shown.
[0020] Figure 5 yes Figure 3 A schematic diagram of the structure of the first embodiment of the light effect forming member shown.
[0021] Figure 6 yes Figure 5 The diagram shows the structure of the light-forming component and the light source.
[0022] Figure 7 yes Figure 3 The diagram shows the structure of multiple light-emitting units of the light source.
[0023] Figure 8 yes Figure 3 A schematic diagram of the structure of the second embodiment of the light effect forming element shown.
[0024] Figure 9 yes Figure 8 The diagram shows the structure of the light-forming component and the light source.
[0025] Figure 10 yes Figure 3 A schematic diagram of the structure of the third embodiment of the light effect forming element shown.
[0026] Figure 11 yes Figure 1 The diagram shows the structure of the light-forming component and the light source.
[0027] Reference numerals: 100, projection device; 10, housing; 20, lampshade; 21, connecting part; 22, spherical part; 221, light receiving surface; 30, light source module; 31, light source; 311, light-emitting side; 312, light-emitting unit; 32, light effect forming component; 321, light effect forming part; 322, diffusion surface; 3221, first contour line; 3222, second contour line; 3223, third contour line; 3224, diffusion concave surface; 40, driving module. Detailed Implementation
[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.
[0029] Please see Figure 1 This application provides a projection device 100, which projects light onto a target object (wall or product) to illuminate the object or create a specific lighting effect to create an atmosphere. For example, the projection device 100 can project light onto a wall to create a water ripple effect, evoking a waterside atmosphere. Alternatively, the projection device 100 can project light onto a product (such as a vehicle or home appliance) to illuminate its prominent features and create specific lighting effects, such as rotation or flashing, to attract customer attention.
[0030] In this embodiment, the projection device 100 includes a housing 10 and a light source module 30. The housing 10 forms the main structure of the projection device 100 and its external appearance. In this embodiment, the housing 10 has a hollow interior, and the light source module 30 is disposed within the housing 10. In this embodiment, the housing 10 is opaque, and a light-emitting window 11 is provided on the housing 10. Light emitted by the light source 31 is conducted out of the housing 10 and to the target object through the light-emitting window 11. In this embodiment, the housing 10 also includes a lampshade 20, which is installed on the housing 10 and covers the light-emitting window 11 to isolate the interior of the housing 10 from the external environment, preventing dust or moisture from entering the interior of the housing 10. In this embodiment, the lampshade 20 includes a light-transmitting structure, such as an acrylic structure or a glass structure. In actual application scenarios, the light from the light source module 30 is transmitted through the lampshade 20 and conducted to the outside of the housing 10. In some other embodiments, the housing 10 includes an integrally formed light-transmitting portion and an opaque portion. The light beam from the light source module 30 is transmitted through the light-transmitting portion and conducted to the outside of the housing 10. In such embodiments, the projection device 100 has a stronger overall integrity, and the surface of the housing 10 is relatively flat, which can reduce the number of protruding or recessed parts on the housing 10.
[0031] Please see Figure 1 and Figure 2In this embodiment, the lampshade 20 includes a connecting portion 21 and a spherical portion 22. The spherical portion 22 is approximately half of a complete sphere, i.e., the spherical portion 22 has a hemispherical structure. In other embodiments, the proportion of the spherical portion 22 to the complete sphere can be specifically set. In this embodiment, the connecting portion 21 is connected to the outer periphery of the spherical portion 22 and is installed on the housing 10. The spherical portion 22 covers the light-emitting window 11. In this embodiment, the spherical portion 22 can make the light more uniform and increase the illumination range of the beam. In this embodiment, the spherical portion 22 has multiple light-receiving surfaces 221 on the side facing the housing 10. The multiple light-receiving surfaces 221 are spliced together and approximately form the inner surface of the spherical portion 22. The beam of light is transmitted through the multiple light-receiving surfaces 221 and conducted to the target object, which can form multiple light spots on the target object to create a starry sky atmosphere. In this embodiment, the multiple light-receiving surfaces 221 can include at least one of curved surfaces and planes.
[0032] Please see Figure 3 In this embodiment, the light source module 30 includes a light source 31 and at least one light effect forming element 32. Both the light source 31 and the light effect forming element 32 are disposed within the housing 10. The light effect forming element 32 is a light-transmitting structure and is located between the light source 31 and the lampshade 20. The light source 31 emits a light beam, and the light effect forming element 32 is disposed on the light-emitting side 311 of the light source 31 to receive the light beam. The light beam passes through the light effect forming element 32 and the lampshade 20 in sequence and is conducted to the outside of the housing 10. The light effect forming element 32 has a light effect forming section 321 for receiving the light beam. After the light beam passes through the light effect forming section 321, a specific light effect can be formed on the target object. In this embodiment, the light effect forming element 32 includes a corrugated sheet, and the light effect forming section 321 is disposed on one side of the corrugated sheet. The light effect forming section 321 includes a water ripple-like texture structure. After the light beam passes through the water ripple structure, a ripple-like light effect can be formed on the target object to create a waterside atmosphere. In other embodiments, the light effect forming element 32 may also include optical elements such as filters and optical grids, and different lighting effects may be formed based on different optical elements.
[0033] In this embodiment, the light effect forming element 32 is provided with a diffusion surface 322. The diffusion surface 322 can receive and diffuse the light beam. After the light beam passes through the light effect forming element 32 and the diffusion surface 322, the light beam can be diffused, so that the projection range of the projection device 100 is larger, and the wavy light effect can occupy most of the surface of the target object. In this embodiment, the light effect forming part 321 is located on the side of the light effect forming element 32 away from the light source 31, and the diffusion surface 322 is located on the side of the light effect forming element 32 facing the light source 31. The light beam is first conducted to the diffusion surface 322 of the light effect forming element 32 and transmitted through the diffusion surface 322, and then conducted to the light effect forming part 321 and transmitted through the light effect forming part 321. Under the configuration of this embodiment, the light beam can first diffuse and then transmit through the light effect forming part 321 to form a wavy light effect, so that the projection range of the projection device 100 is larger, the projection device 100 can form a larger area of wavy light effect, and increase the area ratio of the wavy light effect on the surface of the target object. In other embodiments, the light effect forming portion 321 may be located on the side of the light effect forming member 32 facing the light source 31, and the diffusion surface 322 may be located on the side of the light effect forming member 32 away from the light source 31.
[0034] In summary, this embodiment provides a projection device 100, which includes a light source 31 and at least one light effect forming element 32. The light effect forming element 32 is disposed on the light-emitting side 311 of the light source 31, and the light source 31 is used to emit a light beam to the light effect forming element 32. In this embodiment, light effect forming portions 321 and diffusion surfaces 322 are respectively provided on opposite sides of the light effect forming element 32, with the diffusion surface 322 located on the side of the light effect forming element 32 facing the light source 31. In this embodiment, the light beam is first conducted to the diffusion surface 322 of one of the light effect forming elements 32 and transmitted through the diffusion surface 322, and then conducted to the light effect forming portion 321 and transmitted through the light effect forming portion 321. After the light beam is diffused by the diffusion surface 322, the illumination range of the light beam is larger. After divergence, it is transmitted through the light effect forming portion 321 and forms a wavy light effect, making the projection range of the projection device 100 larger and able to form a large area of wavy light effect. In this embodiment, the projection device 100 does not need to be equipped with additional optical elements such as concave lenses and convex mirrors for scattering light, which can reduce the number of components of the projection device 100. The projection device 100 has fewer structures for cooperating with the components, which can simplify the structure of the projection device 100.
[0035] Please see Figure 3 and Figure 4In some embodiments, the projection device 100 may include a plurality of light effect forming elements 32, all of which are located between the light source 31 and the lampshade 20. In this embodiment, the plurality of light effect forming elements 32 are arranged sequentially at intervals along a direction away from the light-emitting side 311, and all of the plurality of light effect forming elements 32 are located in the optical path of the light beam, and are arranged sequentially at intervals approximately along the propagation path of the light beam. In this embodiment, at least one of the plurality of light effect forming elements 32 has a diffusion surface 322. As an example, the number of light effect forming elements 32 is two, and of the two light effect forming elements 32, the one closer to the light source 31 has a diffusion surface 322, and the one farther from the light source 31 does not have a diffusion surface 322; or, the one closer to the light source 31 does not have a diffusion surface 322, and the one farther from the light source 31 has a diffusion surface 322; or, both light effect forming elements 32 have a diffusion surface 322. As another example, the number of light effect forming elements 32 is three, and a diffusion surface 322 can be provided on one, two or three light effect forming elements 32.
[0036] In this embodiment, the diffusion surface 322 has three implementations.
[0037] Please see Figure 5 , Figure 6 and Figure 7 In the first embodiment, the diffusion surface 322 includes a diffusion concave surface 3224, which approximates a portion of the surface of a sphere. In the first embodiment, the light source module 30 includes multiple light-emitting units 312 (e.g., LED beads), which are arranged sequentially at intervals around a designated axis L. In the first embodiment, the multiple light-emitting units 312 have the same specifications (e.g., rated power, brightness), and the light rays from the multiple light-emitting units 312 converge to form a beam from the light source 31. The outer contour surface of the beam is approximately a plane of rotation about the designated axis L, which approximately coincides with the principal optical axis of the beam. In the configuration of the first embodiment, the diffusion concave surface 3224 is located in the optical path of the multiple light-emitting units 312, and multiple locations on the diffusion concave surface 3224 are illuminated by the light source 31, resulting in a more uniform wavy light effect formed by the projection device 100.
[0038] In the first embodiment, the diffuser concave surface 3224 is a surface of rotation about a specified axis L. A plane passing through the specified axis L is used to cross-section the light effect forming member 32, and this cross-section is defined as the first cross-section. A first contour line 3221 is formed on the first cross-section of the diffuser concave surface 3224. The first contour line 3221 is approximately an arc, and the center of curvature of the arc-shaped first contour line 3221 coincides with the specified axis L. In this first embodiment, the geometric center of the diffuser concave surface 3224 approximately coincides with the principal optical axis of the light beam, making the divergence effect of the diffuser concave surface 3224 on different parts of the light beam approximately the same. This results in a more uniform diverged light beam, leading to a larger projected area for the formed wavy light effect and improved coverage of the projected light effect.
[0039] Please see Figure 7 , Figure 8 and Figure 9 In the second embodiment, the diffusion surface 322 includes a diffusion concave surface 3224, which is arranged around a designated axis L. In the second embodiment, the light source module 30 includes multiple light-emitting units 312 (e.g., LED beads), which are arranged sequentially at intervals around the designated axis L. In the second embodiment, the multiple light-emitting units 312 have the same specifications (e.g., rated power, brightness), and the light rays from the multiple light-emitting units 312 converge to form a beam of light from the light source 31. The outer contour surface of the beam is approximately a surface of rotation about the designated axis L, and the designated axis L approximately coincides with the principal optical axis of the beam.
[0040] In the second embodiment, the diffuser concave surface 3224 is a surface of rotation about a specified axis L. A plane passing through the specified axis L is used to cross-section the light effect forming member 32, and this cross-section is defined as the second cross-section. Two second contour lines 3222 are formed on the second cross-section of the diffuser concave surface 3224. Each second contour line 3222 is approximately an arc, and the center of curvature of the arc-shaped second contour line 3222 is spaced apart from the specified axis L. In the second embodiment, each light-emitting unit 312 has a light axis P, which is parallel to the specified axis L. When the diffuser concave surface 3224 is cross-sectioned with a plane passing through the specified axis L, at least one light-emitting unit 312's light axis P coincides with the plane passing through the specified axis L, and the light axis P of this light-emitting unit 312 coincides with the center of curvature of the second contour line 3222. In the second embodiment, the diffuser concave surface 3224 has a roughly equal divergence effect on different parts of the light beam, resulting in a more uniform diverged light beam. This leads to a larger projected area for the wavy light effect, improving the coverage of the projected light effect. In this embodiment, the two second contour lines 3222 are connected; in other embodiments, the two second contour lines 3222 may be spaced apart.
[0041] Please see Figure 10In the third embodiment, the diffusion surface 322 includes a plurality of diffusion concave surfaces 3224, which are arranged around a designated axis L, and each diffusion concave surface 3224 approximates a portion of the surface of a sphere. See also... Figure 7 In the third embodiment, two adjacent circumferentially adjacent diffuser concave surfaces 3224 are tangent to each other. In other embodiments, two adjacent circumferentially adjacent diffuser concave surfaces 3224 may be spaced apart or connected to each other. In the third embodiment, the light source module 30 includes a plurality of light-emitting units 312 (e.g., LED beads), which are arranged sequentially and spaced apart around a specified axis L. In the third embodiment, the specifications (e.g., rated power, brightness, etc.) of the plurality of light-emitting units 312 are consistent, and the light rays from the plurality of light-emitting units 312 converge to form a beam of light from the light source 31. The outer contour surface of the beam is approximately a plane of rotation about the specified axis L, and the specified axis L is approximately coincident with the principal optical axis of the beam. In the third embodiment, the number of light-emitting units 312 is the same as the number of diffuser concave surfaces 3224, and the plurality of light-emitting units 312 correspond one-to-one with the plurality of diffuser concave surfaces 3224.
[0042] Please see Figure 11 In the third embodiment, each light-emitting unit 312 has an optical axis P, which is parallel to a designated axis L. When multiple light-emitting units 312 correspond one-to-one with multiple diffusion concave surfaces 3224, a plane passing through the optical axis P of one light-emitting unit 312 is used to cross-section the light-effect forming member 32, and this cross-section is defined as the third cross-section. The diffusion concave surface 3224 corresponding to the light-emitting unit 312 has a third contour line 3223 formed on the third cross-section. The third contour line 3223 is approximately an arc, and the center of curvature of the arc-shaped third contour line 3223 is spaced apart from the designated axis L. The center of curvature of the third contour line 3223 of the diffusion concave surface 3224 corresponding to the light-emitting unit 312 coincides with the optical axis P of the light-emitting unit 312. In this embodiment, the diffusion concave surface 3224 is a surface of rotation about the optical axis P of the light-emitting unit 312. In the third embodiment, each diffused concave surface 3224 can diffuse the light of a corresponding light-emitting unit 312. The light of multiple light-emitting units 312 is diffused to a similar degree, so that the light of multiple light-emitting units 312 has approximately the same uniformity and brightness after being diffused, so that the formed ripple light effect has a large projection area and the brightness of the ripple light effect is relatively uniform, thus ensuring the projection effect.
[0043] In other embodiments, the number of light-emitting units 312 and the number of diffusion concave surfaces 3224 may be different. When one light-emitting unit 312 corresponds to one diffusion concave surface 3224, a plane passing through the optical axis P of the light-emitting unit 312 is used to cross-section the light-effect forming member 32 and this cross-section is defined as the fourth cross-section. The diffusion concave surface 3224 forms a fourth contour line on the fourth cross-section. The fourth contour line is approximately the same as the third contour line 3223. The fourth contour line is approximately an arc. The center of curvature of the arc-shaped fourth contour line is spaced apart from the designated axis L. The center of curvature of the fourth contour line coincides with the optical axis P of the light-emitting unit 312. The diffusion concave surface 3224 is a surface of rotation about the optical axis P of the light-emitting unit 312.
[0044] In the first, second, or third embodiment, the projection device 100 may further include a driving module 40. At least one of the plurality of light effect forming elements 32 is driven and connected to the driving module 40, and moves under the driving action of the driving module 40. Among the plurality of light effect forming elements 32, two light effect forming elements 32 move relative to each other. In this embodiment, the relative movement of the two light effect forming elements 32 can create dynamic lighting effects, enhancing the dynamism of the lighting effects, making the ripple lighting effects more realistic, and creating a stronger waterside atmosphere. In this embodiment, the driving module 40 may include a rotary motor, which is driven and connected to the light effect forming element 32, and the light effect forming element 32 rotates approximately around a specified axis L. In other embodiments, the type and driving mode of the driving module 40 can be specifically set according to factors such as the arrangement of the plurality of light-emitting units 312, the shape of the diffusion surface 322, and the type of the light effect forming element 32.
[0045] This embodiment provides a projection device 100, which includes a light source 31 and at least one light effect forming element 32. The light effect forming element 32 is disposed on the light-emitting side 311 of the light source 31, and the light source 31 is used to emit a light beam to the light effect forming element 32. In this embodiment, light effect forming portions 321 and diffusion surfaces 322 are respectively provided on opposite sides of the light effect forming element 32, with the diffusion surface 322 located on the side of the light effect forming element 32 facing the light source 31. In this embodiment, the light beam is first conducted to the diffusion surface 322 of one of the light effect forming elements 32 and transmitted through the diffusion surface 322, and then conducted to the light effect forming portion 321 and transmitted through the light effect forming portion 321. After the light beam is diffused by the diffusion surface 322, the illumination range of the light beam is larger. After divergence, it is transmitted through the light effect forming portion 321 and forms a wavy light effect, making the projection range of the projection device 100 larger and able to form a large-area wavy light effect. In this embodiment, the projection device 100 does not need to be equipped with additional optical elements such as concave lenses and convex mirrors for scattering light, which can reduce the number of components of the projection device 100 and simplify the structure of the projection device 100.
[0046] In this application specification, certain terms are used to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to"; "generally" means that those skilled in the art can solve the technical problem within a certain margin of error and basically achieve the technical effect.
[0047] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of simplifying the description of this application and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0048] In this application, unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or merely surface contact. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0050] 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 indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A projection device, characterized in that, include: A light source used to emit a beam of light; as well as At least one light effect forming member, wherein at least one light effect forming member is disposed on the light-emitting side of the light source, and the light effect forming member is provided with a light effect forming portion for acting on the light beam to form a specified light effect; The light-forming component has a diffusion surface on the side facing the light source for emitting the light beam.
2. The projection device as described in claim 1, characterized in that, The diffusion surface includes a diffusion concave surface.
3. The projection device as described in claim 2, characterized in that, The light source includes multiple light-emitting units, which are arranged sequentially at intervals around a specified axis, and the diffusion concave surface is located in the optical path of the multiple light-emitting units.
4. The projection device as described in claim 3, characterized in that, The light-forming element has a first cross section that coincides with the designated axis, and the diffusion concave surface forms a first contour line on the first cross section, with the center of curvature of the first contour line located on the designated axis.
5. The projection device as described in claim 3, characterized in that, The diffusion concave surface is arranged around the designated axis; Each of the light-emitting units has a light axis that is parallel to the designated axis. The light-effect forming element has a second cross section that coincides with the designated axis. The diffusion concave surface forms two second contour lines on the second cross section. The curvature center of each second contour line is spaced apart from the designated axis, and the curvature center of each second contour line coincides with the corresponding light axis.
6. The projection device as described in claim 1, characterized in that, The diffusion surface includes multiple diffusion concave surfaces, which are arranged sequentially around a designated axis.
7. The projection device as described in claim 6, characterized in that, The light source includes multiple light-emitting units, which are arranged sequentially at intervals around the designated axis; the multiple light-emitting units and the multiple diffusion concave surfaces correspond one-to-one.
8. The projection device as described in claim 7, characterized in that, Each of the light-emitting units has an optical axis, the light-effect forming member has a third cross section, the third cross section coincides with the designated axis, the diffusion concave surface forms a third contour line on the third cross section, and the center of curvature of the third contour line is located at the optical axis of the light-emitting unit.
9. The projection device according to any one of claims 1 to 8, characterized in that, The projection device also includes a drive module; The number of light effect forming elements is multiple, and the multiple light effect forming elements are arranged sequentially at intervals along the direction away from the light emission side. The multiple light effect forming elements are all located in the optical path of the light beam. Among the multiple light effect forming elements, at least one light effect forming element is connected to the driving module and moves under the driving action of the driving module. There are two light effect forming elements that move relative to each other.
10. The projection device according to any one of claims 1 to 8, characterized in that, The projection device further includes a housing and a lampshade. The light source and the light effect forming element are disposed inside the housing. The lampshade is installed in the housing. The light effect forming element is located between the light source and the lampshade. The lampshade includes a spherical portion. The light beam is transmitted sequentially through the light effect forming element and the spherical portion to be conducted to the outside of the housing.