Lighting effect generator

Abstract

The invention provides a lighting effect generator which comprises a control unit, a light source assembly and a plurality of transmission units arranged in a cascading mode, each transmission unit comprises a power source and a power shaft, and the power source is controlled by the control unit to output rotating torque to the power shaft. A transmission mechanism is arranged between every two adjacent stages of transmission units, the transmission mechanism drives the rear-stage transmission unit to rotate around the power shaft of the front-stage transmission unit under the action of the power shaft of the front-stage transmission unit, and the light source assembly is arranged at the position of the last-stage transmission unit in the cascading direction. According to the lighting effect generator, the multiple transmission units which are arranged in a cascade mode work in a matched mode, the light source assembly conducts complex rotation or swing or curvilinear motion in a three-dimensional space, when the light source assembly emits light, the motion trail of the light enables the light to form various unique lighting effects and patterns in the space, and the visual attractiveness is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of lamps, and in particular relates to a light effect generator. Background Art

[0002] In many scenarios such as lighting art, stage performances, and commercial displays, the application of lighting effects is becoming increasingly widespread and important. They can create a unique atmosphere, enhance visual effects, attract audience attention, and improve the quality of the scene. However, existing lighting effects technologies are mostly limited to two-dimensional states and cannot meet the growing demand for three-dimensional lighting effects. To achieve three-dimensional lighting effects, the industry currently uses the following two methods: First, the purpose of three-dimensional lighting effects is achieved by arranging the light strips into a three-dimensional state. Specifically, the operator needs to lay and fix the light strips along a specific three-dimensional track according to the preset three-dimensional lighting effect shape. Although this method can achieve three-dimensional lighting effects to a certain extent, it has obvious disadvantages. In actual operation, the arrangement of the light strips requires a lot of time and effort. Because the light strips need to be installed according to a complex three-dimensional structure, the operator must carefully handle each section of the light strip to ensure its accurate position and firm connection, which makes the entire arrangement process cumbersome and time-consuming. More importantly, when the three-dimensional lighting effect needs to be changed, the arrangement position of the light strips must be readjusted. This means that the original light strip arrangement must be dismantled and then re-laid and fixed according to the new three-dimensional shape. This process not only consumes a lot of time again, but may also cause damage to the light strips, increasing costs and waste of resources.

[0003] The second approach is to achieve three-dimensional lighting effects using moving head lights. These lights use a mechanical structure that allows them to rotate within a certain range, thus changing the direction of light. Moving head lights have also been explored as light sources for starry sky lights, leveraging their rotational properties to simulate the dynamic effects of a starry sky. However, this application also faces numerous challenges. Firstly, moving head lights typically rotate only in one direction, and their rotation angle and range are limited by their mechanical structure. Even when used as a starry sky light source, they struggle to achieve a full, multi-angle, three-dimensional lighting effect, failing to fully simulate the vastness and depth of the starry sky. Secondly, moving head lights were originally designed primarily for illumination, resulting in relatively simple lighting effects. Even when adapted for starry sky simulation, they struggle to produce diverse and creative lighting effects, such as streaking meteors or twinkling constellations. In applications requiring complex and vibrant lighting effects, moving head lights, whether used as standard three-dimensional lighting effects or as a starry sky light source, often fall short and struggle to achieve the desired visual effect.

[0004] Therefore, the existing methods for achieving three-dimensional lighting effects have obvious deficiencies in terms of ease of operation and diversity of lighting effects, and cannot meet the market demand for efficient, flexible and creative three-dimensional lighting effects. Summary of the Invention

[0005] The primary objective of the present invention is to provide a lighting effect generator to solve at least one of the above problems.

[0006] In order to meet the various objectives of the present invention, the present invention adopts the following technical solutions: To meet one of the purposes of the present invention, a light effect generator is provided, including a control unit, a light source assembly and a plurality of transmission units arranged in cascade, the transmission unit including a power source and a power shaft, the power source is controlled by the control unit to output rotational torque to the power shaft, a transmission mechanism is provided between two adjacent transmission units, wherein the transmission mechanism is acted upon by the power shaft of the preceding transmission unit to drive the succeeding transmission unit and rotate around the power shaft of the preceding transmission unit, and the light source assembly is installed at the last transmission unit in the cascade direction.

[0007] In one embodiment, the directions of the power shafts of the plurality of transmission units are the same or different.

[0008] In one embodiment, the transmission mechanism includes a connecting member, the power shaft of the front-stage transmission unit is connected to the connecting member, and the rear-stage transmission unit is arranged on the connecting member.

[0009] In one embodiment, the connecting member is a long plate-shaped structure or a disc-shaped structure, and the distances between each subsequent transmission unit and the corresponding power shaft are different.

[0010] In one embodiment, the transmission mechanism includes a first gear and a second gear, the first gear is in transmission connection with the second gear, the power shaft of the front-stage transmission unit is in transmission connection with the first gear, and the rear-stage transmission unit is arranged on the second gear.

[0011] In one embodiment, the light effect generator also includes a mounting platform, the power shaft of the last-stage transmission unit is connected to the mounting platform, the light source assembly is arranged on the mounting platform, and the light source assembly includes a laser emitter or an LED lamp bead, and the laser emitter or the LED lamp bead emits outgoing light.

[0012] In one embodiment, the light effect generator further includes a mounting platform, the power shaft of the last-stage transmission unit is connected to the mounting platform, the light source assembly is arranged on the mounting platform, and the light source assembly includes a red light emitter, a green light emitter, and a blue light emitter. The red light emitted by the red light emitter, the green light emitted by the green light emitter, and the blue light emitted by the blue light emitter are combined to form the output light.

[0013] In a further embodiment, the green light emitter and the red light emitter are arranged in sequence along the emission path of the blue light emitted by the blue light emitter, wherein a blue light bandpass filter is set at the intersection of the blue light and the green light, and a red light bandpass filter is set at the intersection of the blue light and the red light.

[0014] In one embodiment, the light effect generator further includes a light blocking plate, which is arranged on the emission path of the outgoing light. A light beam through hole is formed on the light blocking plate, and the outgoing light is emitted outward through the light beam through hole.

[0015] In one embodiment, a beam expander lens is provided directly below or directly above the beam through hole.

[0016] Compared with the prior art, the present invention has many advantages, including but not limited to: The light effect generator of the present invention utilizes multiple cascaded transmission units to coordinate with each other, providing a wide range of motion possibilities for the light source assembly. Each transmission unit has a power source and a power shaft, and adjacent transmission units are connected by a transmission mechanism, enabling the light source assembly to move along a complex, predetermined trajectory.

[0017] For example, by precisely controlling the power sources of each transmission unit through a control unit, the light source assembly can be made to perform complex rotations, swings, or curved motions in three-dimensional space. When the light source assembly emits light, its motion trajectory causes the light to form various unique shapes and patterns in space, such as spirals, waves, petals, etc., greatly enriching the variety of optical patterns. Compared with traditional flat lighting effects or lighting effect devices with simple motion modes, the present invention can create more diverse, more artistic, and visually impactful lighting effects, meeting the needs of different scenarios and users for unique visual experiences, and significantly improving visual aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 Schematic diagram of the structure of a light effect generator according to a typical embodiment of the present invention.

[0019] Figure 2 4 is a circuit principle block diagram of a light effect generator according to a typical embodiment of the present invention.

[0020] Figure 3 Schematic diagram of the structure of a light effect generator according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and are not to be construed as limiting the present invention.

[0022] It will be understood by those skilled in the art that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the description of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. In addition, "connected" or "coupled" as used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0023] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art in the art to which this invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and, unless specifically defined as such, will not be interpreted in an idealized or overly formal sense.

[0024] The present invention provides a light effect generator, which can move in multiple directions simultaneously to generate three-dimensional light effects.

[0025] In an exemplary embodiment of the present invention, Figure 1 and Figure 2 The light effect generator 10 includes a control unit 100, a light source assembly 200, and a motion module 300. The control unit 100 is electrically connected to the light source assembly 200 and the motion module 300 to control the light source assembly 200 and the motion module 300.

[0026] The motion module 300 includes multiple transmission units 310, which are arranged in a cascade configuration. Specifically, in this embodiment, the multiple transmission units 310 are arranged sequentially along the cascade direction. Each transmission unit 310 includes a power source 311 and a power shaft 312. The power source 311 and the power shaft 312 are connected in a transmission relationship, and the power source 311 can output torque to the power shaft 312, thereby driving the power shaft 312 to rotate.

[0027] To facilitate the description of the technical solution of the present invention, in this embodiment, the power source 311 is a motor, and the power shaft 312 is the output shaft of the motor. However, it should be understood that this example is merely an aid in understanding the technical concept of the present invention and should not be construed as limiting the present invention. The control unit 100 communicates and controls the motor via an electrical connection. The control unit 100 can send control signals to the motor to control the motor's operating state, thereby controlling the speed and direction of rotation of the output shaft.

[0028] Among the multiple transmission units 310 arranged in cascade, two adjacent transmission units 310 are respectively a front-stage transmission unit 320 and a rear-stage transmission unit 330. A transmission mechanism 340 is provided between the front-stage transmission unit 320 and the rear-stage transmission unit 330. The power shaft of the front-stage transmission unit 320 (referred to as the front-stage power shaft 321) is connected to the transmission mechanism 340. During operation, the front-stage transmission unit 320 can synchronously drive the transmission mechanism 340 to rotate about the front-stage power shaft 321.

[0029] The rear-stage transmission unit 330 is installed on the transmission mechanism 340. When the front-stage transmission unit 320 drives the transmission mechanism 340 to rotate around the front-stage power shaft 321, the transmission mechanism 340 will synchronously drive the rear-stage transmission unit 330 to rotate around the front-stage power shaft 321, thereby realizing power transmission and motion coordination between adjacent transmission units 310.

[0030] In this embodiment, the transmission mechanism 340 includes a connecting member 341 . The front-stage power shaft 321 of the front-stage transmission unit 320 is fixedly connected to the connecting member 341 to ensure a stable relative position between the two. The rear-stage transmission unit 330 is mounted on the connecting member 341 .

[0031] During operation, the front-stage transmission unit 320 drives the connecting member 341 to rotate around the front-stage power shaft 321 through the front-stage power shaft 321, and the connecting member 341 further drives the rear-stage transmission unit 330 to rotate synchronously around the front-stage power shaft 321, thereby realizing the transmission of power from the front-stage transmission unit 320 to the rear-stage transmission unit 330.

[0032] In this embodiment, the connector 341 is preferably in the form of an elongated plate, a circular disc, or an elliptical disc. However, it should be noted that these structures are merely exemplary and should not be construed as limiting the present invention. To facilitate the description of the technical solution of the present invention, the following description uses the connector 341 as an example of an elongated plate, but this should not be construed as limiting the present invention.

[0033] According to kinematic principles, the linear velocity v of the rear-stage transmission unit 330 satisfies the formula v=ω⋅r, where v represents the linear velocity of the rear-stage transmission unit 330, ω represents the angular velocity of the front-stage power shaft 321, and r represents the distance between the rear-stage transmission unit 330 and the front-stage power shaft 321. Based on this formula, the linear velocity of the rear-stage transmission unit 330 can be accurately calculated. By controlling the length of the connecting member 341 and the position of the rear-stage transmission unit 330 on the connecting member 341, the distance r between the rear-stage transmission unit 330 and the front-stage power shaft 321 can be effectively adjusted, thereby achieving control of the linear velocity of the rear-stage transmission unit 330.

[0034] In this embodiment, the distances between each rear-stage transmission unit 330 and its corresponding front-stage power shaft 321 are different, so that each rear-stage transmission unit 330 has a different linear speed, thereby meeting different motion requirements and application scenarios.

[0035] In another embodiment, combined Figure 3 The transmission mechanism 340 includes two gears, which are respectively referred to as the first gear 342 and the second gear 343. The first gear 342 and the second gear 343 can be directly engaged to achieve transmission, or can be connected through a gear system. The specific transmission method can be selected according to actual transmission needs and design requirements.

[0036] The front-stage power shaft 321 of the front-stage transmission unit 320 is inserted into and fixed in the gear hole of the first gear 342, so that a stable transmission connection is formed between the front-stage power shaft 321 and the first gear 342. When the front-stage transmission unit 320 is in operation, the front-stage power shaft 321 can drive the first gear 342 to rotate around its own axis.

[0037] The rear-stage transmission unit 330 is mounted on the second gear 343. When the first gear 342 rotates under the drive of the front-stage power shaft 321, it also drives the second gear 343 to rotate synchronously. Because the rear-stage transmission unit 330 is mounted on the second gear 343, the second gear 343 synchronously drives the rear-stage transmission unit 330 to rotate around the front-stage power shaft 321, thereby achieving power transmission from the front-stage transmission unit 320 to the rear-stage transmission unit 330.

[0038] According to the kinematic principles of gear transmission, by controlling the dimensions (e.g., number of teeth, module, etc.) of the first gear 342 and the dimensions of the second gear 343, the rotation radius of the second gear 343 can be changed, thereby controlling the distance between the rear-stage transmission unit 330 and the front-stage power shaft 321. The linear velocity of the rear-stage transmission unit 330 is related to this distance and the angular velocity of the front-stage power shaft 321. Therefore, the linear velocity of the rear-stage transmission unit 330 can be controlled by adjusting the dimensions of the first gear 342 and the second gear 343.

[0039] In this embodiment, the distances between each rear-stage transmission unit 330 and its corresponding front-stage power shaft 321 are different, so that each rear-stage transmission unit 330 has a different linear speed, thereby meeting diverse motion requirements and application scenarios.

[0040] In an exemplary embodiment of the present invention, Figure 1 and Figure 2 Among the multiple transmission units 310 arranged in cascade in the motion module 300, the last transmission unit 310 along the cascade direction is defined as a final-stage transmission unit 350. A mounting platform 351 is provided on the final-stage transmission unit 350, and a power shaft of the final-stage transmission unit 350 (referred to as the final-stage power shaft 352) is connected to the mounting platform 351. When the final-stage power shaft 352 is driven by the power source 311 of the final-stage transmission unit 350 (referred to as the final-stage power source 353) to rotate, it simultaneously drives the mounting platform 351 to rotate about its own axis.

[0041] The light source assembly 200 is mounted on the mounting platform 351 and is configured to emit light to the outside world. When the mounting platform 351 rotates at a speed greater than a predetermined speed, the light will form a continuous image effect in the eyes of the observer.

[0042] Specifically, its principle is based on the human eye's persistence of vision. When stimulated by light, the visual receptors on the retina convert the light signal into neural signals that are transmitted to the brain. However, the brain's perception of the image does not cease immediately after the light signal disappears; instead, it is retained for a brief period. Modern medical research indicates that the human eye's persistence of vision typically ranges from 0.1 to 0.4 seconds, with 1 / 24 second (approximately 0.042 seconds) being the minimum threshold for ensuring that dynamic images appear continuous and flicker-free to the observer.

[0043] Based on this principle, the present invention uses a final power source 353 to drive the light source assembly 200 to rotate at high speed, so that the light source forms a specific motion trajectory in space. Due to the persistence of vision of the human eye, this motion trajectory will be perceived by the observer as a continuous image. Specifically, to achieve smooth dynamic light effects, the rotation speed of the final power shaft 352 must be at least 24 rpm (i.e., 1440 rpm) to ensure that the number of frames displayed per unit time exceeds the minimum requirement of the human eye's persistence of vision. When the rotation speed of the final power shaft 352 is lower than this threshold, the observer may perceive the light flickering or appearing as intermittent light spots; when the rotation speed is increased to 30 rpm (1800 rpm) or higher, the continuity of the dynamic light effect will be further improved, which can meet more complex image display requirements.

[0044] Furthermore, by adjusting the rotation speed and rotation radius of the final power shaft 352 and the light emission timing of the light source assembly 200, the scanning trajectory of the light spot can be precisely controlled, thereby generating various regular dynamic or static optical patterns to meet the light effect requirements in different application scenarios.

[0045] As can be seen, in the present invention, given that the power shafts 312 of the multiple transmission units 310 may or may not be oriented in the same direction, the control unit 100 controls the operating state of the power source 311 of each transmission unit 310 by sending a control signal to the power source 311 of each transmission unit 310, thereby precisely controlling the speed, rotation direction, and rotation stroke of the power shaft 312 of each transmission unit 310. The multiple transmission units 310 cooperate with each other under the coordinated control of the control unit 100, allowing the light source assembly 200 mounted on the mounting platform 351 to travel along different paths, thereby forming diverse optical images or light effects.

[0046] For example, the motion paths of the light source assembly 200 mounted on a motion module 300 composed of two transmission units 310, a motion module 300 composed of three transmission units 310, and a motion module 300 composed of four transmission units 310 are different. By combining different numbers of transmission units 310 and differentially controlling their power shafts 312, the light source assembly 200 can move along a predetermined trajectory, thereby forming unique optical images or light effects, meeting the diverse lighting effect requirements in different application scenarios.

[0047] To facilitate a clear explanation of the technical solution of the present invention, this embodiment uses the example of the motion module 300 including two transmission units 310 for illustration. However, it should be understood that this example should not be construed as limiting the present invention. In this embodiment, the two transmission units 310 of the motion module 300 are referred to as a first transmission unit 360 and a second transmission unit 370, respectively. The first transmission unit 360 and the second transmission unit 370 are disposed adjacent to each other. The first transmission unit 360 constitutes the preceding transmission unit of the second transmission unit 370, and the second transmission unit 370 constitutes the succeeding transmission unit of the first transmission unit 360. Furthermore, the second transmission unit 370 also serves as the final transmission unit of the motion module 300.

[0048] The power shaft of the first transmission unit 360 (referred to as the first power shaft 361) and the power shaft of the second transmission unit 370 (referred to as the second power shaft 371) are oriented in the same direction. The first power shaft 361 and the connecting member 341 are fixedly connected to ensure a stable relative position between them, thereby enabling the first power shaft 361 to drive the connecting member 341 to move.

[0049] The power source of the second transmission unit 370 (referred to as the second power source 372) is mounted on the connector 341, and the second power shaft 371 is mounted on the second power source 372. When the first power shaft 361 rotates the connector 341, the connector 341 simultaneously drives the second power shaft 371 to rotate about the first power shaft 361. Subsequently, the second power source 372 drives the second power shaft 371 to rotate, which in turn drives the mounting platform 351 to rotate, thereby causing the mounting platform 351 to simultaneously rotate the light source assembly 200 mounted thereon.

[0050] Given that both the first power shaft 361 and the second power shaft 371 are in a rotating state, the motion path of the mounting platform 351 in space can be determined through kinematic analysis based on the rotational direction and speed of each of the first power shaft 361 and the second power shaft 371, as well as the relative distance between the first power shaft 361 and the second power shaft 371. Accordingly, since the light source assembly 200 is mounted on the mounting platform 351, the motion path of the mounting platform 351 also defines the motion path of the light source assembly 200.

[0051] As the light source assembly 200 moves along the mounting platform 351, it continuously emits light. The light propagates through space along the path defined by the light source assembly 200. Due to the persistence of vision of the human eye and the continuity of light propagation, the light forms a specific optical image or presents a specific lighting effect to the observer.

[0052] In one embodiment, the first rotating unit and the second rotating unit cooperate with each other. When the amplitude of the light source assembly 200 is set to 2 and the frequency is set to 3 rad / s, the motion trajectory of the light source assembly 200 in space satisfies the following trajectory equation: f(t) = 2e −3it +e it Based on the above trajectory equation, those skilled in the art can use Euler's formula to convert the trajectory equation into a parametric equation in real form, and then draw the motion trajectory of the light source assembly 200 in a coordinate system.

[0053] It is understood that because the light source assembly 200 continuously emits light during its motion, the light distribution formed by its motion trajectory in space will present a specific optical pattern or light effect. By analyzing the motion trajectory of the light source assembly 200, those skilled in the art can correspondingly obtain the specific characteristics of the optical pattern or light effect produced by the light source assembly 200, such as the shape and size of the pattern, the intensity distribution of the light effect, and the dynamic change pattern, so as to meet the optical effect requirements in different application scenarios.

[0054] In an exemplary embodiment of the present invention, the light source assembly 200 includes three laser emitters, namely a red light emitter 210, a green light emitter 220, and a blue light emitter 230. The red light emitter 210 is configured to emit red light, the wavelength of which is within the red spectrum of visible light; the green light emitter 220 is configured to emit green light, the wavelength of which is within the green spectrum of visible light; and the blue light emitter 230 is configured to emit blue light, the wavelength of which is within the blue spectrum of visible light.

[0055] The red light emitted by the red light emitter 210, the green light emitted by the green light emitter 220, and the blue light emitted by the blue light emitter 230 converge in space. Based on the principle of mixing the three primary colors of light, these three colors of light can be combined to form the output light. The control unit 100 is electrically connected to the red light emitter 210, the green light emitter 220, and the blue light emitter 230, respectively, and controls the luminous power of the red light emitter 210, the green light emitter 220, and the blue light emitter 230 by sending control signals to each laser emitter. By adjusting the luminous power ratio of the three color laser emitters, the output light can be made to present any color of light to meet the light color requirements in different application scenarios.

[0056] Furthermore, as the light source assembly 200 moves along the mounting platform 351, the control unit 100 can change the operating states of the red, green, and blue light emitters 210, 220, and 230 in real time. By dynamically adjusting the operating states of each laser emitter, the light source assembly 200 continuously changes the color of its emitted light during its movement. This dynamically changing color of light propagates through space, combined with the motion trajectory of the light source assembly 200, to form vibrant optical patterns or lighting effects, significantly enhancing visual aesthetics.

[0057] The light effect assembly further includes a light blocking plate 240, which is disposed on the propagation path of the outgoing light and can block the outgoing light from being further emitted to the outside space, thereby preliminarily limiting the propagation range of the outgoing light.

[0058] The light-blocking plate 240 is provided with a through hole (referred to as a beam through hole 241). The outgoing light can continue to be emitted into the external space through the beam through hole 241. By designing the shape of the beam through hole 241, the beam shape of the outgoing light after passing through the beam through hole 241 can be limited, thereby enhancing the aesthetics and ornamental value of the optical pattern or light effect formed by the outgoing light. For example, when the shape of the beam through hole 241 is rectangular, the beam shape of the outgoing light emitted through the beam through hole 241 is also rectangular; when the shape of the beam through hole 241 is star-shaped, the beam shape of the outgoing light emitted through the beam through hole 241 is also star-shaped.

[0059] The light effect component also includes a beam expander lens 250, which is arranged directly below the light beam hole 241, that is, the beam expander lens 250 is closer to the emission end of the outgoing light than the light baffle 240. The beam expander lens 250 can expand the outgoing light and increase the beam diameter of the outgoing light by changing the divergence angle of the light, thereby improving the intensity and coverage of the formed optical pattern or light effect. Alternatively, the beam expander lens 250 can also be arranged directly above the light beam hole 241, that is, the beam expander lens 250 is farther away from the emission end of the outgoing light than the light baffle 240. In this arrangement, the beam expander lens 250 can expand the outgoing light passing through the light beam hole 241 to meet the specific requirements of optical patterns or light effects in different application scenarios.

[0060] In a further embodiment, in combination Figure 1 The blue light emitter 230 emits blue light, and the green light emitter 220 and the red light emitter 210 are arranged sequentially along the propagation path of the blue light. The green light emitted by the green light emitter 220 and the red light emitted by the red light emitter 210 are both arranged perpendicular to the blue light, and the light outlet of the red light emitter 210 faces the light beam aperture 241, allowing the red light to be directly emitted into the light beam aperture 241.

[0061] The light effect assembly also includes two bandpass filters, each with specific optical properties that transmit light within a specific frequency band while reflecting light from other frequency bands. These two bandpass filters are a blue bandpass filter 261 and a red bandpass filter 262. The blue bandpass filter 261 transmits light within the wavelength range of blue light while refracting or reflecting light of other wavelengths; the red bandpass filter 262 transmits light within the wavelength range of red light while refracting or reflecting light of other wavelengths.

[0062] The blue light bandpass filter 261 is positioned at the intersection of the blue and green light rays, with its mirror surface formed at a 45° angle to the blue and green light rays, respectively. Based on the principles of optical reflection and transmission, the blue light can pass through the blue light bandpass filter 261 and continue its original propagation direction toward the red light. However, the green light, whose wavelength does not meet the transmission requirements of the blue light bandpass filter 261, cannot pass through the filter. Instead, it is refracted by the filter and propagates in the same direction as the red light, resulting in the green and blue light rays overlapping or being arranged parallel in space.

[0063] The red bandpass mirror 262 is positioned at the intersection of the blue and red light rays, with its mirror surface formed at a 45° angle to the blue and red light rays, respectively. Under this configuration, the red light can pass through the red bandpass mirror 262 and continue along its original propagation direction toward the beam aperture 241. However, the blue and green light rays, whose wavelengths do not meet the transmission requirements of the red bandpass mirror 262, are refracted by the mirror and similarly emitted toward the beam aperture 241. Ultimately, the red, blue, and green light rays overlap in space and, based on the principle of mixing the three primary colors of light, are combined to form the aforementioned outgoing light beam.

[0064] In another embodiment, the light source assembly 200 includes LED lamp beads (not shown), which are used to replace the red light emitter 210, green light emitter 220, and blue light emitter 230 described above. The control unit 100 is electrically connected to the LED lamp beads and can control the color and intensity of the light emitted by the LED lamp beads by sending control signals to the LED lamp beads. Based on the light-emitting principle of the LED lamp beads and the precise control of the control unit 100, the LED lamp beads can emit light of any color to meet the diverse light color requirements in different application scenarios.

[0065] In this embodiment, the light source assembly 200 further includes a lens (the lens is referred to as a cup-shaped lens, not shown). The cup-shaped lens is in the shape of a cup as a whole, and its inner surface has a specific optical curve, which can converge and shape the light. Since the light distribution of the LED lamp bead is similar to the Lambertian distribution, its half-intensity angle is usually 120°, and the light is dispersed and propagated within a larger angle range, resulting in a relatively low light intensity directly in front. By covering the LED lamp bead with the cup-shaped lens cover, the cup-shaped lens can constrain and shape the light emitted by the LED lamp bead. On the one hand, it can reduce the half-intensity angle of the light, so that the light is more concentrated in a specific direction; on the other hand, it can increase the light intensity directly in front of the LED lamp bead and increase the energy density of the light in this direction, thereby improving the optical performance and lighting effect of the light source assembly 200.

[0066] The present invention also provides a starry sky lamp, which includes a projection module and the light effect generator described above. The light effect generator serves as the light source of the starry sky lamp. The light effect generator emits light to the projection module so that the projection module projects light effects outward to generate predetermined light effects.

[0067] In summary, the light effect generator of the present invention can drive the light source assembly to perform predetermined movements through the motion module, so that the light emitted by the light source assembly forms corresponding optical patterns or light effects, thereby improving visual aesthetics.

[0068] The above description is merely an illustration of the preferred embodiments of the present invention and the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this invention is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the above-mentioned inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions invented in this invention.

[0069] Although the subject matter has been described in language specific to structural features and / or methodological logical acts, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely example forms of implementing the claims.

Claims

1. A light effect generator, characterized in that: It includes a control unit, a light source assembly and multiple transmission units arranged in cascade. The transmission unit includes a power source and a power shaft. The power source is controlled by the control unit to output torque to the power shaft. A transmission mechanism is provided between two adjacent transmission units. The transmission mechanism is driven by the power shaft of the previous transmission unit to drive the subsequent transmission unit and rotate around the power shaft of the previous transmission unit. The light source assembly is installed at the last transmission unit in the cascade direction.

2. The light effect generator according to claim 1, wherein: The directions of the power shafts of the plurality of transmission units are the same or different.

3. The light effect generator according to claim 1, wherein: The transmission mechanism includes a connecting member, a power shaft of the front-stage transmission unit is connected to the connecting member, and the rear-stage transmission unit is arranged on the connecting member.

4. The light effect generator according to claim 3, wherein: The connecting member is a long plate structure or a disc structure, and the distances between each subsequent transmission unit and the corresponding power shaft are different.

5. The light effect generator according to claim 1, wherein: The transmission mechanism includes a first gear and a second gear, the first gear is in transmission connection with the second gear, the power shaft of the front-stage transmission unit is in transmission connection with the first gear, and the rear-stage transmission unit is arranged on the second gear.

6. The light effect generator according to claim 1, wherein: The light effect generator also includes a mounting platform, the power shaft of the last-stage transmission unit is connected to the mounting platform, the light source assembly is arranged on the mounting platform, and the light source assembly includes a laser emitter or an LED lamp bead, and the laser emitter or the LED lamp bead emits outgoing light.

7. The light effect generator according to claim 1, wherein: The light effect generator also includes a mounting platform, the power shaft of the last-stage transmission unit is connected to the mounting platform, and the light source assembly is arranged on the mounting platform. The light source assembly includes a red light emitter, a green light emitter and a blue light emitter. The red light emitted by the red light emitter, the green light emitted by the green light emitter and the blue light emitted by the blue light emitter are combined to form the output light.

8. The light effect generator according to claim 7, wherein: The green light emitter and the red light emitter are arranged in sequence along the emission path of the blue light emitted by the blue light emitter, wherein a blue light bandpass filter is set at the intersection of the blue light and the green light, and a red light bandpass filter is set at the intersection of the blue light and the red light.

9. The light effect generator according to any one of claims 6 to 8, characterized in that: The light effect generator further includes a light blocking plate, which is arranged on the emission path of the outgoing light. A light beam through hole is formed on the light blocking plate, and the outgoing light is emitted outward through the light beam through hole.

10. The light effect generator according to claim 9, wherein: A beam expander lens is provided directly below or directly above the light beam through hole.

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