Lighting device

Abstract

The lighting device comprises a lighting system and a driving assembly, the lighting system comprises a light emitting assembly and a lens assembly, a light filtering mechanism and a light emitting assembly which are sequentially arranged in the light emitting direction of the light emitting assembly, the light emitting assembly is used for emitting polychromatic light, and the light filtering mechanism comprises a plurality of light filtering parts; the lens assembly is used for focusing light generated by the light-emitting assembly to the light filtering components, the light filtering components are sequentially arranged in a plane perpendicular to the optical axis of the light-emitting assembly, and a first range is formed in the direction of the optical axis of the light-emitting assembly. The optical center of the light emitting assembly is located at the middle position of the first range; the driving assembly is used for driving the light emitting assembly to move in the first range in the optical axis direction of the light emitting assembly. The lighting device can stably achieve emergence of stage light, is low in overall cost, and can conduct focusing and achieve the zoom effect.

Description

Technical Field

[0001] The present application relates to the field of lighting technology, and more specifically, to a lighting device. Background Art

[0002] Current stage light beam technology includes the function of multi-spectral mixed lighting. However, in actual applications, in order to meet the stringent requirements of stage lighting on color and luminous flux, multi-color LED light sources are usually used for light mixing. However, multi-color LED light sources have defects such as insufficient luminous intensity and poor color mixing effect. To solve these problems, existing stage lighting equipment uses RGB multi-color pure laser light sources to achieve multi-color effects, but this solution has the disadvantages of high cost and safety risks of direct laser output. Summary of the Invention

[0003] The present application aims to overcome at least one of the above-mentioned defects of the prior art and provide a lighting device for solving the problems of high cost and potential safety hazards of stage lighting equipment in the prior art.

[0004] The technical solutions adopted in this application are as follows:

[0005] A lighting device includes a lighting system and a driving component. The lighting system includes a light-emitting component and a lens component, a filtering mechanism and a light-emitting component arranged in sequence along the light-emitting direction of the light-emitting component. The light-emitting component is used to emit multi-color light. The lens component is used to focus the light generated by the light-emitting component onto a target point. The target point is located on the filtering mechanism. The filtering mechanism includes multiple filtering components that can pass through the target point in sequence. The filtering mechanism has a first range along the optical axis direction of the light-emitting component. The first range is arranged around the optical center of the light-emitting component. The driving component is used to drive the light-emitting component to move within the first range along the optical axis direction of the light-emitting component.

[0006] The lighting device according to the embodiment of the present application has at least the following beneficial effects:

[0007] During use, the multi-color light emitted by the light-emitting assembly sequentially passes through the lens assembly, the filter mechanism, and the light-emitting assembly for emission. The lens assembly is used to focus the light generated by the light-emitting assembly onto the target point of the filter mechanism. Because the target point is located on the filter mechanism and the filter mechanism includes multiple filter components that can sequentially pass through the target point, the multiple filter components sequentially pass through the target point and sequentially reduce the multi-color light emitted by the light-emitting assembly to form light of corresponding colors. By controlling the filter mechanism, a light mixing effect can be effectively ensured. The drive assembly can drive the light-emitting assembly to move along the optical axis, and the range of movement of the light-emitting assembly is within a first range near the optical center of the light-emitting assembly, thereby adjusting the width of the light beam emitted by the light-emitting assembly to achieve a zoom effect. This lighting device uses a subtractive color method, which can stably achieve the emission of stage lights while reducing the cost of the lighting device. The multi-color light emitted by the light-emitting assembly is processed by the filter mechanism and the light-emitting assembly, avoiding the safety hazards caused by direct laser emission, ensuring rich colors of the stage lights, and capable of focusing and achieving a zoom effect, with strong controllability.

[0008] According to some embodiments of the present application, the light-emitting assembly includes a white light emitting unit and a first focusing lens, the first focusing lens is arranged close to the light-emitting surface of the white light emitting unit, and the first focusing lens is located between the white light emitting unit and the lens assembly.

[0009] According to some embodiments of the present application, the white light emitting unit includes a substrate, a second focusing lens and a blue light source arranged radially along the first focusing lens, the second focusing lens is arranged between the blue light source and the substrate, a phosphor layer is provided on the substrate, and the first focusing lens is arranged close to the phosphor layer.

[0010] According to some embodiments of the present application, the lighting device includes a shell, the light-emitting component, the lens component, the light-emitting component and the driving component are all installed on the shell, the filtering mechanism includes a moving component movably installed on the shell, and a plurality of the filtering components are sequentially arranged on the moving component.

[0011] According to some embodiments of the present application, the filtering component includes a red filter, a blue filter, a green filter and a white light transmitting area, and the red filter, the blue filter, the green filter and the white light transmitting area are arranged in sequence and continuously on the moving component.

[0012] According to some embodiments of the present application, the filtering mechanism includes a first driving component mounted on the housing, the first driving component is connected to the motion component to drive multiple filtering components to pass through the target point in sequence, multiple filtering components are arranged at intervals on the motion component, and the spacing between adjacent filtering components is not less than the size of the light spot formed by focusing on the filtering mechanism, and the first driving component and the light-emitting component are both electrically connected to the timing controller.

[0013] According to some embodiments of the present application, the motion component includes a rotating component rotatably connected to the shell, a plurality of filtering components are arranged along the circumference of the rotating component, the first driving component includes a driving motor installed on the shell, and the first driving component is connected to the axis of the rotating component to drive the rotating component to rotate.

[0014] According to some embodiments of the present application, the motion component includes a first linear motion component, the shell is provided with a first slideway cooperating with the first linear motion component, the first slideway is arranged along the radial direction of the light-emitting component, a plurality of the filtering components are arranged on the first linear motion component at radial intervals along the light-emitting component, and the first driving component is connected to the first linear motion component to drive the first linear motion component to move along the first slideway.

[0015] According to some embodiments of the present application, the driving assembly includes a second linear motion component, the shell is provided with a second slideway cooperating with the second linear motion component, the second slideway is arranged along the optical axis direction of the light-emitting assembly, the driving assembly includes a second driving component installed on the shell, the second driving component is used to drive the light-emitting assembly to move, and the light-emitting assembly includes a first collimating lens.

[0016] According to some embodiments of the present application, the lens assembly includes a second collimating lens and a third focusing lens arranged in sequence along the light emitting direction of the light emitting assembly, the light incident surface of the second collimating lens is a planar structure, and the light incident surface of the third focusing lens is a convex structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is one of the structural diagrams of an embodiment of the present application;

[0019] Figure 2 This is a second structural diagram of an embodiment of the present application;

[0020] Figure 3This is one of the structural schematic diagrams of the filter component according to one embodiment of the present application;

[0021] Figure 4 This is a second structural diagram of a filter component according to an embodiment of the present application;

[0022] Figure 5 This is the third structural diagram of the filter component according to one embodiment of the present application;

[0023] Figure 6 This is a fourth structural diagram of a filter component according to an embodiment of the present application;

[0024] Figure 7 This is a timing diagram of the operation of the lighting system according to an embodiment of the present application.

[0025] Reference numerals:

[0026] 100, light emitting component; 110, white light emitting unit; 120, first focusing lens; 111, substrate; 112, second focusing lens; 113, blue light source; 114, phosphor layer; 115, third collimating lens 115;

[0027] 200, lens assembly; 210, second collimating lens; 220, third focusing lens; target point 230;

[0028] 300, filter mechanism; 310, filter component; 311, red filter; 312, blue filter; 313, green filter; 314, white light transmission area; 320, motion component; 321, rotating component; 322, first linear motion component; 330, first driving component;

[0029] 400, light output component;

[0030] 500, driving assembly; 510, second linear motion component; 520, second driving component;

[0031] 600, housing; 610, first slide; 620, second slide; 630, lens; 640, heat dissipation hole. DETAILED DESCRIPTION

[0032] The following describes in detail embodiments of the present application. 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 application and are not to be construed as limiting the present application.

[0033] In the description of this application, it should be understood that if orientation descriptions are involved, the orientations or positional relationships indicated, such as up, down, front, back, left, and right, are based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.

[0034] In the description of this application, if the words "several", "greater than", "less than", "exceed", "above", "below", "within" etc. appear, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0035] In the description of this application, if words such as first and second appear, they are only used to distinguish technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0037] Reference Figures 1 to 6 According to an embodiment of the present application, a lighting device includes a lighting system and a driving component. The lighting system includes a light-emitting component 100 and a lens component 200, a filtering mechanism 300, and a light-emitting component 400 arranged in sequence along the light-emitting direction of the light-emitting component 100. The light-emitting component 100 is used to emit multi-color light. The lens component 200 is used to focus the light generated by the light-emitting component 100 onto a target point 230. The target point 230 is located on the filtering mechanism 300. The filtering mechanism 300 includes a plurality of filtering components that can pass through the target point 230 in sequence. A first range a is provided along the optical axis direction of the light-emitting component 100. The first range a is arranged around the optical center of the light-emitting component 400. The driving component 500 is used to drive the light-emitting component 400 to move within the first range a along the optical axis direction of the light-emitting component 100.

[0038] During use, the multi-color light emitted by the light-emitting component 100 passes through the lens component 200, the filtering mechanism 300 and the light-emitting component 400 in sequence. The lens component 200 is used to focus the light generated by the light-emitting component 100 onto the target point 230 of the filtering mechanism 300. Since the target point 230 is located on the filtering mechanism 300 and the filtering mechanism 300 includes a plurality of filtering components that can pass through the target point 230 in sequence, the plurality of filtering components pass through the target point 230 in sequence and reduce the multi-color light emitted by the light-emitting component 100 in sequence and form light of corresponding colors. By controlling the filtering mechanism, the mixed light effect can be effectively guaranteed. The driving component 500 can drive the light-emitting component 400 to move along the optical axis, and the light-emitting component 400 The range of motion is within a first range a near the optical center of the light emitting component 400, so that the width of the light beam emitted by the light emitting component 400 can be adjusted to achieve a zoom effect. The lighting device can stably achieve the emission of stage lights and uses a subtractive color method. While being able to stably achieve the emission of stage lights, it reduces the cost of the lighting device and ensures that the stage lights are rich in color. It can be focused to achieve a zoom effect and has strong controllability. The multi-color light emitted by the light emitting component is processed by the filtering mechanism and the light emitting component to avoid the safety hazards caused by direct emission of the laser. It can be understood that in order to ensure the luminous intensity, the light emitting component 100 can select a light source such as a laser light source according to actual needs to ensure high-brightness output.

[0039] In some of the embodiments, preferably, the subtractive model uses white light as a basic light source, and the light-emitting component 100 includes a white light-emitting unit 110 and a first focusing lens 120. The first focusing lens 120 is arranged close to the light-emitting surface of the white light-emitting unit 110, and the first focusing lens 120 is located between the white light-emitting unit 110 and the lens assembly 200. The first focusing lens 120 is used to focus the white light emitted by the white light-emitting unit 110, so that the lens assembly 200 can collimate and focus the light. It can be understood that if there is a subtractive model using non-white light as a basic light source in the future, the lighting device will still be applicable.

[0040] See also Figure 1 and Figure 2In some embodiments, a blue light source 113 is used to generate a white light source. Specifically, the white light emitting unit 110 includes a substrate 111, a second focusing lens 112, and a blue light source 113 arranged radially along the first focusing lens 120. The second focusing lens 112 is arranged between the blue light source 113 and the substrate 111. A phosphor layer 114 is provided on the substrate 111. The second focusing lens 112 focuses the blue light emitted by the blue light source 113 onto the phosphor layer 114 to convert it into white light. The first focusing lens 120 is arranged close to the phosphor layer 114 to focus the phosphor layer 114. The white light excited by the optical powder layer 114 is gathered, which makes it easier for the subsequent lens assembly 200 to collimate and focus the light. It can be understood that a third collimating lens 115 is provided at the light outlet of each blue light source 113. The third collimating lens 115 converts the disordered divergent blue light emitted by the blue light source 113 into directional parallel blue light, which is beneficial for the second focusing lens 112 to accurately focus the blue light on the phosphor layer 114 of the substrate 111 to excite white light. The method of using a blue laser light source to irradiate the phosphor layer 114 to excite white light is low in cost and color-adjustable, and can continuously achieve high-brightness white light output.

[0041] See also Figure 1 and Figure 2 In some embodiments, the lighting device includes a housing 600, the light-emitting component 100, the lens component 200, the light-emitting component 400 and the driving component 500 are all mounted on the housing 600, the filtering mechanism 300 includes a motion component 320 mounted on the housing 600, and multiple filter components 310 are sequentially arranged on the motion component 320. The movement of the motion component 320 can drive the filter components 310 to pass through the target point 230 in sequence. It can be understood that the multiple filter components 310 are sequentially arranged in a plane perpendicular to the optical axis of the light-emitting component 100, and the multiple filter components 310 are all located in a plane perpendicular to the optical axis of the light-emitting component 100.

[0042] See also Figure 4In some embodiments, the filter component 310 includes a red filter 311, a blue filter 312, a green filter 313 and a white light transmitting area 314. The red filter 311, the blue filter 312, the green filter 313 and the white light transmitting area 314 are arranged successively on the motion component 320. The subtractive method is adopted. The red filter 311 transmits red light and absorbs blue and green light. The blue filter 312 transmits blue light and absorbs red and green light. When in use, if monochromatic light is required, the motion component 320 is manually moved to move the red filter 311 to the target point 230, so that the white light emitted by the white light emitting unit 110 is focused on the red filter 311 through the lens assembly 200 and generates red light through the light output assembly 400; the motion component 320 is manually moved to move the blue filter 312 to the target point 230. Point 230, so that the white light emitted by the white light emitting unit 110 is focused onto the blue filter 312 through the lens assembly 200, and blue light is generated through the light emitting assembly 400; manually move the moving part 320 to move the green filter 313 to the target point 230, so that the white light emitted by the white light emitting unit 110 is focused onto the green filter 313 through the lens assembly 200, and green light is generated through the light emitting assembly 400; manually move the moving part 320 to move the white light transmission area 314 to the target point 230, so that the white light emitted by the white light emitting unit 110 is focused onto the white light transmission area 314 through the lens assembly 200, and white light is generated through the light emitting assembly 400. It can be understood that setting the white light transmission area 314 is a better solution for generating white light. If white light is not required, only red, green and blue light are required, the white light transmission area 314 is used. Figure 3 In the embodiment, only the red filter 311, the blue filter 312, and the green filter 313 are required.

[0043] Reference Figure 5 and Figure 6 In other embodiments, the filter mechanism 300 includes a motion component 320 and a first driving component 330 mounted on the housing 600. The first driving component 330 is connected to the motion component 320 to drive the plurality of filter components 310 to sequentially pass through the target point 230. The plurality of filter components 310 are arranged at intervals on the motion component 320. The spacing between adjacent filter components 310 is not less than the size of the light spot formed by focusing on the filter mechanism 300. The filter components 310 are physically separated to ensure spectral purity, avoid cross-color and energy loss, effectively avoid light mixing, and ensure light output quality. The first driving component 330 and the light-emitting component 100 are both electrically connected to the timing controller. Figure 7In the timing diagram, the horizontal axis T represents time, and the vertical axis P represents light power. When the light emitted by the light emitting component 100 is focused to the distance between the adjacent filter components 310 through the lens component 200, the timing controller controls the light emitting component 100 to turn off; when the light emitted by the light emitting component 100 is focused to the filter component 310 through the lens component 200, the timing controller controls the light emitting component 100 to emit light. The timing controller is based on Figure 7 In the illustrated time operation, when the filter component 310 includes a red filter 311, a blue filter 312, a green filter 313 and a white light-transmitting area 314, red light, blue light, green light and white light are generated in sequence. It can be understood that the white light-transmitting area 314 allows full-spectrum white light to pass directly, with a transmittance of more than 95%, significantly improving the system brightness output, so that the brightness of the RGBW color wheel in the lighting device is increased by 30% to 50% compared with the pure RGB color wheel solution; and under the same brightness, the white light-transmitting area 314 shares part of the lighting task, reducing the switching frequency of the filter component 310, reducing the power consumption of the light-emitting component 100 and the overall heat dissipation pressure of the lighting device.

[0044] Combine Figure 1 and Figure 3 In some embodiments, the motion component 320 includes a rotating component 321 rotatably connected to the housing 600, and multiple filter components 310 are arranged along the circumference of the rotating component 321. The first driving component 330 includes a driving motor mounted on the housing 600, and the output shaft of the driving motor is connected to the axis of the rotating component 321 to drive the rotating component 321 to rotate, thereby driving the multiple filter components 310 to pass through the target point 230 in sequence, and the switching speed of the multiple filter components 310 can be controlled by the speed of the driving motor to achieve timing control to ensure uniformity of color mixing. It can be understood that the rotating component 321 is a turntable. In addition to the driving motor, the first driving component 330 can also be a driving component that can drive the rotating component 321 to rotate around its axis.

[0045] In addition to the design of using the rotating component 321, in some other embodiments, the motion component 320 is slidably mounted on the housing 600, see Figure 2 and Figure 6The motion component 320 includes a first linear motion component 322. A first slide 610 is provided on the housing 600 to cooperate with the first linear motion component 322. The first slide 610 is arranged along the radial direction of the light-emitting component 100. A plurality of filter components 310 are arranged on the first linear motion component 322 at intervals along the radial direction of the light-emitting component 100. The first driving component 330 is connected to the first linear motion component 322 to drive the first linear motion component 322 to move along the first slide 610. By setting the first driving component 330, it is possible to drive the first linear motion component 322 to reciprocate along the radial direction of the light-emitting component 100. Movement causes the multiple filter components 310 to circulate and pass through the target point 230 in sequence. It can be understood that the first driving component 330 includes a telescopic component, one end of the telescopic component is mounted on the housing 600, and the other end of the telescopic component is connected to the first linear motion component 322 to drive the multiple filter components 310 to pass through the target point 230 in sequence. The telescopic component quickly drives the first linear motion component 322 to reciprocate to achieve rapid switching of the multiple filter components 310. It can be understood that the telescopic component can use a linear motor, a gear rack drive, a ball screw drive, etc. to achieve switching of the multiple filter components 310.

[0046] In some of these embodiments, see Figure 1 and Figure 2 The driving component 500 includes a second linear motion component 510, and a second slide 620 cooperating with the second linear motion component 510 is provided on the shell 600. The second slide 620 is arranged along the optical axis direction of the light-emitting component 100. The driving component 500 includes a second driving component 520 installed on the shell 600. The second driving component 520 is used to drive the light-emitting component 400 to move within the first range a. It can be understood that the light-emitting component 400 can adopt the movement mode of the slide rail slider, or the movement mode of the gear rack engagement, or the movement mode of the ball screw transmission, the linear motor direct drive, etc. to achieve reciprocating focusing. The light-emitting component 400 includes a first collimating lens. It can be understood that the light-emitting component 400 can also be composed of multiple lens groups to achieve the effect of emitting a collimated light beam.

[0047] See also Figure 1 and Figure 2 The lens assembly 200 includes a second collimating lens 210 and a third focusing lens 220 arranged in sequence along the light emitting direction of the light emitting assembly 100. The light incident surface of the second collimating lens 210 is a planar structure. Such a planar structure can effectively reduce the overall thickness of the second collimating lens 210 and is more suitable for situations where space is limited in the lighting device. The light incident surface of the third focusing lens 220 is a convex structure. The convex surface has a significant focusing effect on light and reduces the complexity and cost of the optical system of the lighting device.

[0048] See also Figure 1 and Figure 2 In some embodiments, a lens 630 for emitting a light beam is provided on the housing 600. The light beam emitted by the light emitting component 400 is projected to the outside through the lens 630, and a heat dissipation hole 640 is provided on the top of the housing 600 to quickly discharge the hot air in the lighting device to the outside to prevent the temperature inside the lighting device from accumulating.

[0049] Throughout this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," and "some examples" indicate 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. In this specification, the illustrative use of the above terms does 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 any one or more embodiments or examples.

[0050] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A lighting device, characterized in that: include: An illumination system includes a light-emitting assembly and a lens assembly, a filter mechanism, and a light-emitting assembly sequentially arranged along a light-emitting direction of the light-emitting assembly, wherein the light-emitting assembly is configured to emit polychromatic light, the lens assembly is configured to focus the light generated by the light-emitting assembly onto a target point, the target point being located on the filter mechanism, the filter mechanism including a plurality of filter components capable of sequentially passing through the target point, and having a first range along the optical axis of the light-emitting assembly, the first range being arranged around the optical center of the light-emitting assembly; A driving component is used to drive the light emitting component to move within the first range along the optical axis direction of the light emitting component.

2. The lighting device according to claim 1, characterized in that The light emitting assembly includes a white light emitting unit and a first focusing lens. The first focusing lens is arranged close to the light emitting surface of the white light emitting unit and is located between the white light emitting unit and the lens assembly.

3. The lighting device according to claim 2, characterized in that The white light emitting unit includes a substrate, a second focusing lens and a blue light source arranged radially along the first focusing lens, the second focusing lens is arranged between the blue light source and the substrate, a phosphor layer is provided on the substrate, and the first focusing lens is arranged close to the phosphor layer.

4. The lighting device according to claim 2, characterized in that It includes a shell, the light-emitting component, the lens component, the light-emitting component and the driving component are all installed on the shell, the filtering mechanism includes a moving component movably installed on the shell, and multiple filtering components are sequentially arranged on the moving component.

5. The lighting device according to claim 4, characterized in that The filter component includes a red filter, a blue filter, a green filter and a white light transmission area, and the red filter, the blue filter, the green filter and the white light transmission area are arranged in sequence and continuously on the moving component.

6. The lighting device according to claim 4, characterized in that The filtering mechanism includes a first driving component mounted on the housing, the first driving component being connected to the motion component to drive the plurality of filtering components to pass through the target point in sequence, the plurality of filtering components being arranged at intervals on the motion component, the spacing between adjacent filtering components being no less than the size of a light spot formed by focusing on the filtering mechanism, and the first driving component and the light-emitting component being electrically connected to a timing controller.

7. The lighting device according to claim 6, characterized in that The motion assembly includes a rotating component rotatably connected to the housing, a plurality of filter components are arranged along the circumference of the rotating component, and the first driving component is connected to the axis of the rotating component to drive the rotating component to rotate.

8. The lighting device according to claim 6, characterized in that The motion component includes a first linear motion component, and the shell is provided with a first slideway that cooperates with the first linear motion component. The first slideway is arranged along the radial direction of the light-emitting component, and multiple filter components are arranged on the first linear motion component at intervals along the radial direction of the light-emitting component. The first driving component is connected to the first linear motion component to drive the first linear motion component to move along the first slideway.

9. The lighting device according to claim 4, characterized in that The driving assembly includes a second linear motion component, and the shell is provided with a second slideway that cooperates with the second linear motion component. The second slideway is arranged along the optical axis direction of the light-emitting assembly. The driving assembly includes a second driving component installed on the shell, and the second driving component is used to drive the light-emitting assembly to move. The light-emitting assembly includes a first collimating lens.

10. The lighting device according to claim 1, wherein The lens assembly includes a second collimating lens and a third focusing lens sequentially arranged along the light emitting direction of the light emitting assembly. The light incident surface of the second collimating lens is a planar structure, and the light incident surface of the third focusing lens is a convex structure.

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