Optical system with switchable light spot effect, light source and stage lamp

Abstract

The utility model discloses an optical system with a switchable light spot effect, a light source and a stage lamp. The optical system with the switchable light spot effect comprises a plurality of light-emitting units, collimating lenses in one-to-one correspondence with the light-emitting units, and a light receiving lens for integrating light rays generated by the light-emitting units into light beams. The system further comprises a first effect piece, a second effect piece and a driving module, and under driving of the driving module, the first effect piece and the second effect piece are provided with working positions independently or simultaneously cut into the position between the collimating lens and the light receiving lens and waiting positions independently or simultaneously cut out of the position outside the collimating lens and the light receiving lens. A first effect piece and a second effect piece are arranged between the collimating lens and the light receiving lens, when the collimating lens and the light receiving lens are independently switched to working positions, the optical system projects different types of light spots to a target plane, and when the first effect piece and the second effect piece are switched to the working positions at the same time, the optical system projects different types of light spots to the target plane. And the two light spots are overlapped to form a specific light spot with another composite effect.

Description

Technical Field

[0001] The utility model relates to the technical field of stage lights, and more specifically to an optical system with switchable light spot effects, a light source and a stage light. Background Art

[0002] High-power LED lighting technology has attracted widespread attention from the light source industry at home and abroad, and has become a high-tech product with development prospects and influence. With the development of LED technology, more and more stage lights use LED modules as light sources. Compared with traditional halogen bulbs, LED modules are green and environmentally friendly, more energy-efficient, can be turned on quickly and run at low temperatures, and are more durable. Most of the LED modules on the market are as shown in an LED light source system and LED lighting device disclosed in Chinese patent CN103968268B, including a multi-color LED light source array, a collimating lens array corresponding to the light source array, a compound eye lens and a focusing lens. Stage light designers will also add or replace components in the light source as needed to achieve specific effects.

[0003] However, the effects of single LED modules on the market today are relatively single. When the light source is installed in the stage light, when different effects need to be switched, the lamp needs to be disassembled to replace the light source, which consumes time and labor costs and lacks convenience. Utility Model Content

[0004] In order to overcome at least one defect of the above-mentioned prior art, the utility model provides an optical system, a light source and a stage light with switchable light spot effects. By setting the first effect sheet and the second effect sheet that can be selectively cut in, different effect sheets can be cut in between the collimating lens and the light collecting lens as needed to achieve a variety of light spot effects.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an optical system with switchable light spot effects, a light source and a stage light, wherein the optical system with switchable light spot effects includes a plurality of light-emitting units, a collimating lens for collimating the light of the light-emitting units, and a light-collecting lens for integrating the light generated by the light-emitting units to form a light beam; it also includes a first effect sheet, a second effect sheet and a driving module. Under the drive of the driving module, the first effect sheet and the second effect sheet have a working position that is cut into between the collimating lens and the light-collecting lens individually or simultaneously, and a waiting position that is cut out to outside the collimating lens and the light-collecting lens individually or simultaneously.

[0006] The collimating lens collimates the light emitted by the light-emitting unit so that it is emitted in the direction of the main optical axis as much as possible; at the same time, the first effect sheet and the second effect sheet are arranged between the collimating lens and the light-collecting lens. When the two are switched to the working position separately, the optical system projects different types of light spots to the target plane respectively. When the first effect sheet and the second effect sheet are switched to the working position at the same time, the two are superimposed to form another specific light spot with a composite effect. Such an arrangement enables the optical system to achieve at least two or more specific light spots, with richer effects, and can simultaneously meet multiple light spot requirements on the market.

[0007] Furthermore, the first effect sheet is a compound eye lens and / or the second effect sheet is a light homogenizing sheet. Since the light emitting angles of the plurality of light emitting units are narrowed after being collimated by the collimating lens and a plurality of small light beams are formed, the plurality of small light beams emitted from the collimating lens are integrated by the light collecting lens, and a combined light spot composed of a plurality of small light spots with relatively clear edges is projected on the target plane. At this time, the light spot has a central area with higher brightness, but a mesh dark area will appear in the light spot, and the color of the light spot will also have local deviations. When the first effect sheet is a compound eye lens, due to its strong optical integration effect, the incoming light is fully homogenized and then projected into the light-collecting lens, and finally a light spot with uniform brightness and color is presented on the target plane, and there is no obvious dark area; when the second effect sheet is a light homogenizer, the light emitted from the collimating lens is homogenized, the edge of the small light spot is blurred, and the color of the light spot is uniform. Compared with the compound eye lens, the light homogenizer has a weaker homogenizing effect on several small light beams, so after the integration of the light-collecting lens, the light spot finally projected on the target plane has a high-brightness central area, and the color is relatively uniform, and there is no reticular dark area. By setting the first effect sheet and the second effect sheet with different effects, an optical path system can project at least 2 kinds of light spots, enriching the optical effects that can be achieved by the light source system.

[0008] Furthermore, the first effect sheet and the second effect sheet are located in the same plane. Under the drive of the driving module, the first effect sheet and the second effect sheet are selected to cut into the working position by rotation or translation. Such an arrangement makes the collimating lens and the light collecting lens fit more closely, thereby reducing the vertical length of the entire optical system.

[0009] Furthermore, the first effect sheet and the second effect sheet are arranged in sequence along the light emitting direction. With such an arrangement, the first effect sheet and the second effect sheet can be selectively switched to the working position individually or simultaneously without interfering with each other according to design requirements.

[0010] Furthermore, the first effect sheet is a fly-eye lens, which is arranged close to the collimating lens to help reduce the diffusion of light, so as to ensure that the fly-eye lens can effectively capture more light for homogenization, thereby effectively improving the light effect of the entire optical system.

[0011] Furthermore, the driving module includes a driving motor for providing driving force, and the first effect sheet and the second effect sheet are driven by the same driving motor, thereby saving installation space of the driving module and making the overall structure of the optical system more compact.

[0012] Furthermore, the driving module includes a first motor and a second motor for providing driving force, and the first effect sheet and the second effect sheet are driven by the first motor and the second motor respectively. By setting the first motor and the second motor to drive the first effect sheet and the second effect sheet separately, the control is more flexible and accurate.

[0013] Furthermore, the spacing between the collimating lens and the light collecting lens ranges from 8 mm to 15 mm. By controlling the spacing between the collimating lens and the light collecting lens, light loss caused by an excessively long optical path can be avoided while providing sufficient space for the first effect sheet and / or the second effect sheet to be cut in.

[0014] Furthermore, the light emitting unit is an LED chip, which has the advantages of being environmentally friendly, highly efficient, more durable, and easier to maintain.

[0015] The utility model also provides a light source, comprising any one of the above optical systems, and further comprising a substrate, and a plurality of the light-emitting units are closely mounted on the substrate.

[0016] The utility model also provides a stage light, comprising the aforementioned light source, and also comprising a lamp tube with an opening, wherein the light source is located at one end of the lamp tube away from the opening, and the opening cover is provided with a light-emitting lens. The light source is applied to the stage light, and the stage light can switch different modes according to design requirements, and cooperate with other effect modules of the stage light to produce richer light spot effects. Compared with the existing stage lights with only a single effect light source, the light spot effect can be easily switched without replacing the light source, and the operation is simple, and it is more convenient for subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram when the first effect member and the second effect member are stacked and arranged and cut into the working position.

[0018] Figure 2 It is a structural schematic diagram when the first effect sheet and the second effect sheet are stacked and switched to a pending position.

[0019] Figure 3 It is a structural schematic diagram of another embodiment in which the first effect sheet and the second effect sheet are located on the same plane.

[0020] Figure 4 It is a structural schematic diagram of another embodiment when the second effect sheet is cut into the working position.

[0021] Figure 5 It is an illumination diagram of the simulated light spot in the XY direction when the fly-eye lens is switched to the working position.

[0022] Figure 6 It is an illumination diagram of the simulated light spot in the XY direction when the light homogenizer is switched to the working position.

[0023] Figure 7 It is a structural schematic diagram of installing the light source of the utility model in a stage lamp.

[0024] In the figure:

[0025] 100, optical system; 110, light-emitting unit; 120, collimating lens; 130, light-collecting lens; 140, first effect sheet; 141, first bracket; 150, second effect sheet; 151, second bracket; 160, driving module; 161, first motor; 162, second motor; 200, light source; 210, substrate; 220, housing; 300, lamp tube; 310, opening; 320, light-emitting lens; 330, effect module. DETAILED DESCRIPTION

[0026] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0027] like Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, an optical system 100 with switchable light spot effect, a light source 200 and a stage light, wherein the optical system 100 with switchable light spot effect includes a plurality of light-emitting units 110, a collimating lens 120 for collimating the light of the light-emitting unit 110, and a light-collecting lens 130 for integrating the light generated by the light-emitting unit 110 to form a light beam; and also includes a first effect sheet 140, a second effect sheet 150 and a driving module 160. Driven by the driving module 160, the first effect sheet 140 and the second effect sheet 150 have a working position that is cut in between the collimating lens 120 and the light-collecting lens 130 individually or simultaneously, and a waiting position that is cut out outside the collimating lens 120 and the light-collecting lens 130 individually or simultaneously.

[0028] The collimating lens 120 collimates the light emitted by the light-emitting unit 110 so that it is emitted along the direction of the main optical axis as much as possible; at the same time, the first effect sheet 140 and the second effect sheet 150 are arranged between the collimating lens 120 and the light-collecting lens 130. When the two are switched to the working position separately, the optical system 100 projects different types of light spots to the target plane respectively. When the first effect sheet 140 and the second effect sheet 150 are switched to the working position at the same time, the two are superimposed to form another specific light spot with a composite effect. Such a setting enables the optical system 100 to achieve at least two or more specific light spots, with richer effects, and can simultaneously meet multiple light spot requirements on the market.

[0029] Preferably, the first effect sheet 140 and the second effect sheet 150 are driven by the driving module 160 to switch to the working positions individually and sequentially to achieve two different light spot effects to meet different light effect requirements of designers.

[0030] Preferably, the collimating lens 120 is a structure of multiple small lenses corresponding one-to-one to the light-emitting units 110 , and is integrated into a whole component, which is more convenient for assembly and disassembly.

[0031] In a preferred embodiment of the utility model, the first effect sheet 140 is a compound eye lens and / or the second effect sheet 150 is a light homogenizer. Since the light emitting angles of the plurality of light emitting units 110 are narrowed after being collimated by the collimating lens 120 and a plurality of small light beams are formed, the plurality of small light beams emitted from the collimating lens 120 are integrated by the light collecting lens 130, and a combined light spot composed of a plurality of small light spots with relatively clear edges is projected on the target plane. At this time, the light spot has a central area with higher brightness, but a mesh dark area will appear in the light spot, and the color of the light spot will also have local deviation. When the first effect sheet 140 is a compound eye lens, due to its strong optical integration effect, the incoming light is fully homogenized and then projected into the light-collecting lens 130, and finally a light spot with uniform brightness and color is presented on the target plane without obvious dark areas; when the second effect sheet 150 is a light homogenizer, the light emitted from the collimating lens 120 is homogenized, the edge of the small light spot is blurred, and the color of the light spot is uniform. Compared with the compound eye lens, the light homogenizer has a weaker homogenizing effect on several small light beams, so after the integration of the light-collecting lens 130, the light spot finally projected on the target plane has a high-brightness central area, and the color is relatively uniform, and there will be no reticular dark areas. By setting the first effect sheet 140 and the second effect sheet 150 with different effects, an optical path system can project at least two kinds of light spots, enriching the optical effects that can be achieved by the light source 200 system.

[0032] like Figure 3 As shown in FIG4 , in a preferred embodiment of the present invention, the first effect sheet 140 and the second effect sheet 150 are located in the same plane. Driven by the driving module 160, the first effect sheet 140 and the second effect sheet 150 are selectively cut into the working position by rotation or translation. Such an arrangement makes the collimating lens 120 and the light collecting lens 130 fit more closely, thereby reducing the vertical length of the entire optical system 100.

[0033] like Figure 3 As shown, preferably, the first effect sheet 140 and the second effect sheet 150 are respectively located at two sides of the light emitting unit 110 , and are sequentially cut into the working position under the drive of the driving module 160 .

[0034] like Figure 4 As shown, in other embodiments of the utility model, it also includes a disk body for installing the first effect piece 140 and the second effect piece 150 on the same plane, and the disk body is connected to the driving module 160 so that the two can rotate under the drive of the driving module 160 and switch to the working position in sequence.

[0035] like Figure 1 , Figure 2 As shown, in a preferred embodiment of the utility model, the first effect sheet 140 and the second effect sheet 150 are arranged in sequence along the light emitting direction. Through such an arrangement, the first effect sheet 140 and the second effect sheet 150 can be selectively switched to the working position individually or simultaneously without interfering with each other according to design requirements.

[0036] Preferably, it also includes a first bracket 141 for installing the first effect sheet 140, and a second bracket 151 for installing the second effect sheet 150. The first effect sheet 140 is installed on one end of the first bracket 141, and the other end is connected to the driving module 160. Similarly, the second effect sheet 150 is installed on one end of the second bracket 151, and the other end is connected to the driving module 160. The first bracket 141 and the second bracket 151 transmit the driving force of the driving module 160 to the first effect sheet 140 and the second effect sheet 150.

[0037] In a preferred embodiment of the utility model, the first effect sheet 140 is a fly-eye lens. The fly-eye lens is arranged close to the collimating lens 120 to help reduce the diffusion of light, so as to ensure that the fly-eye lens can effectively capture more light for homogenization, and effectively improve the light effect of the entire optical system 100.

[0038] In a preferred embodiment of the present invention, the driving module 160 includes a driving motor for providing driving force, and the first effect sheet 140 and the second effect sheet 150 are driven by the same driving motor, which saves installation space of the driving module 160 and makes the overall structure of the optical system 100 more compact.

[0039] In a preferred embodiment of the utility model, the driving module 160 includes a first motor 161 and a second motor 162 that provide driving force, and the first effect piece 140 and the second effect piece 150 are driven by the first motor 161 and the second motor 162 respectively. By setting the first motor 161 and the second motor 162 to drive the first effect piece 140 and the second effect piece 150 separately, the control is more flexible and accurate.

[0040] In a preferred embodiment of the utility model, the interval between the collimating lens 120 and the light collecting lens 130 is between 8 mm and 15 mm. By controlling the interval between the collimating lens 120 and the light collecting lens 130, light loss caused by an excessively long optical path can be avoided while providing sufficient space for the first effect sheet 140 and / or the second effect sheet 150 to cut in.

[0041] Preferably, the light emitting unit 110 is an LED chip. Since the LED chip is a point light source 200, and in order to reduce light loss, the fly-eye lens should be arranged closer to the LED chip, and the distance is preferably between several millimeters and one centimeter.

[0042] Preferably, when the first effect piece 140 is a single-layer or double-layer compound eye lens and the second effect piece 150 is a light homogenizing piece, the interval between the collimating lens 120 and the light collecting lens 130 is 8 mm; when in order to make the light mixing more complete, the first effect piece 140 is a combination of multi-layer compound eye lenses, and the second effect piece 150 is a light homogenizing piece, the collimating lens 120 and the light collecting lens 130 can be set with a larger spacing as needed, but it is limited to less than 15 mm to avoid excessive diffusion of light.

[0043] In a preferred embodiment of the present invention, the light emitting unit 110 is an LED chip, which has the advantages of being environmentally friendly, highly efficient, more durable, and easier to maintain.

[0044] like Figure 1 and Figure 7 As shown, in another embodiment of the present invention, a light source 200 is provided, comprising any one of the aforementioned optical systems 100 , and further comprising a substrate 210 , and a plurality of the light emitting units 110 are closely mounted on the substrate 210 .

[0045] Preferably, the collimating lens 120, the first effect sheet 140, the second effect sheet 150 and the driving module 160 are fixed on the substrate 210. The light emitting unit 110 is arranged close to the substrate 210, which is convenient for installation and also helps the heat dissipation of the light emitting unit 110.

[0046] Preferably, it further comprises a housing 220 having a housing cavity, the housing 220 is buckled on the substrate 210, the optical system 100 is located in the housing cavity, and a light outlet for light to pass through is provided at one end of the housing 220 away from the substrate 210, and the light receiving lens 130 covers the light outlet. The housing 220 ensures that the light generated by the optical system 100 is only emitted from the light receiving lens 130, and avoids stray light from other emission directions passing through and causing light leakage.

[0047] Preferably, the substrate 210 is made of aluminum alloy, which provides sufficient supporting force and is more conducive to heat dissipation of the light-emitting unit 110.

[0048] In another embodiment of the utility model, a stage light is provided, comprising the aforementioned light source 200, and also comprising a lamp tube 300 having an opening 310, wherein the light source 200 is located at one end of the lamp tube 300 away from the opening 310, and the opening 310 is covered with a light-emitting lens 320. The light source 200 is applied to the stage light, and the stage light can switch different modes according to design requirements, and cooperate with other effect modules 330 of the stage light to produce richer light spot effects. Compared with the existing stage light with only a single effect light source 200, the light spot effect can be easily switched without disassembling the light source 200, and the operation is simple, and it is more convenient for subsequent maintenance.

[0049] Preferably, the light source 200 generates a light path with a main optical axis, and the stage light further includes a CMY module that can cut into the light path, an effect module 330 and a magnifying lens, etc., so that the stage light can project a light spot with richer effects.

[0050] Preferably, the effect module 330 is a pattern plate, the first effect plate 140 is a compound eye lens, and the second effect plate 150 is a homogenizer. When the compound eye lens is switched to the working position alone, the light beam generated by the light source 200 can form a light spot with uniform brightness. At this time, the light beam passes through the pattern plate and is projected from the light output lens 320 to the target plane, presenting a pattern with uniform brightness; when the homogenizer is switched to the working position alone, the brightness of the pattern light spot projected by the stage light to the target plane gradually darkens from the middle to the surrounding areas. Combined with special patterns, a specific stage effect can be achieved.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An optical system with switchable light spot effect, characterized in that: The invention comprises a plurality of light-emitting units (110), a collimating lens (120) for collimating the light of the light-emitting unit (110), and a light-collecting lens (130) for integrating the light generated by the light-emitting unit (110) to form a light beam; and further comprises a first effect sheet (140), a second effect sheet (150) and a driving module (160). Under the drive of the driving module (160), the first effect sheet (140) and the second effect sheet (150) have a working position that is cut in between the collimating lens (120) and the light-collecting lens (130) individually or simultaneously, and a waiting position that is cut out outside the collimating lens (120) and the light-collecting lens (130) individually or simultaneously.

2. The optical system according to claim 1, characterized in that The first effect sheet (140) is a fly-eye lens and / or the second effect sheet (150) is a light homogenizing sheet.

3. The optical system according to claim 1, characterized in that The first effect sheet (140) and the second effect sheet (150) are located on the same plane.

4. The optical system according to claim 1, characterized in that The first effect sheet (140) and the second effect sheet (150) are arranged in sequence along the light emitting direction.

5. The optical system according to claim 4, characterized in that The first effect sheet (140) is a fly-eye lens.

6. The optical system according to claim 3 or 4, characterized in that: The driving module (160) comprises a driving motor for providing driving force, and the first effect piece (140) and the second effect piece (150) are driven by the same driving motor.

7. The optical system according to claim 3 or 4, characterized in that: The driving module (160) comprises a first motor (161) and a second motor (162) for providing driving force, and the first effect sheet (140) and the second effect sheet (150) are driven by the first motor (161) and the second motor (162) respectively.

8. The optical system according to claim 1, characterized in that The distance between the collimating lens (120) and the light collecting lens (130) ranges from 8 mm to 15 mm.

9. The optical system according to claim 1, characterized in that The light-emitting unit (110) is an LED chip.

10. A light source, characterized in that: The optical system (100) comprises any one of claims 1 to 9, and further comprises a substrate (210), wherein a plurality of the light-emitting units (110) are closely mounted on the substrate (210).

11. A stage light, characterized in that: A light source (200) as claimed in claim 10, further comprising a lamp tube (300) having an opening (310), wherein the light source (200) is located at one end of the lamp tube (300) away from the opening (310), and the opening (310) is covered with a light emitting lens (320).

Images