Compact color mixer

Abstract

The utility model relates to a compact color mixer, and belongs to the technical field of stage lighting. The compact color mixer comprises a substrate, and two groups of color filtering assemblies, a rotating disc, a color sheet disc, a transmission mechanism and a magnetic induction positioning assembly which are mounted on the substrate, the substrate is used for a white light transmission channel, each color filtering assembly comprises at least two coaxially stacked color filters and is used for gradient dynamic color mixing, the rotating disc is used for realizing light and shadow cutting, and the magnetic induction positioning assembly is used for positioning the rotating disc. The color chip disc is coaxially integrated at the top of one group of color filtering assemblies and used for rendering pure-color lamplight, the transmission mechanism and the magnetic induction positioning assembly respectively drive and position all rotating parts, and the precision of multi-axis cooperation is ensured. According to the scheme provided by the utility model, through the coaxial laminated color filtering assembly, magnetic induction closed-loop positioning and cooperative driving of multiple transmission mechanisms, the problems of large size and non-uniform color mixing caused by positioning deviation of a traditional color mixer are solved, and the effects of compact structure and high-precision color transition of the color mixer are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to stage lighting technical field especially relates to a compact color mixer. BACKGROUND

[0002] In the stage lighting technical field, the color mixer is the core component to realize the light color rendering. The traditional color mixer adopts the square double-piece plug-in type color piece structure, and realizes the color mixing effect through the superposition of different color filters. However, due to the independent installation and longitudinal arrangement of the color filters, the overall structure is bulky, and the color filters need to be driven independently. The response speed, load characteristics or control parameter differences of each transmission system appear cumulative tolerance, which affects the uniformity of color mixing. SUMMARY

[0003] In order to overcome the problems in the related art, the utility model provides a compact color mixer, which solves the problem of uneven color mixing caused by the large size and positioning deviation of the traditional color mixer through coaxial laminated color filter assembly, magnetic induction closed loop positioning and cooperative driving of multiple transmission mechanisms, and realizes the compact structure of the color mixer and the effect of high-precision color transition.

[0004] The utility model provides a compact color mixer for stage lamp, which comprises:

[0005] A base plate is provided with a light projecting hole;

[0006] Two groups of color filter assemblies are arranged on the base plate and comprise at least two coaxially laminated color filters;

[0007] A rotating disc is arranged on the base plate and comprises a rotating shaft, a revolving disc and a rotating gear, the rotating shaft is rotatably arranged on the base plate, the revolving disc is coaxially connected and fixed with the rotating shaft, the revolving disc is provided with a first light transmitting hole surrounding the rotating shaft and a plurality of pattern discs, the pattern discs are rotatably connected with the revolving disc, and the rotating gear is sleeved with the rotating shaft and is meshed with the pattern discs;

[0008] A color filter disc is coaxially arranged on one of the color filter assemblies, and the color filter disc is provided with a second light transmitting hole surrounding the shaft center and a plurality of pure color filters;

[0009] At least seven transmission mechanisms are used to drive the revolving disc, the rotating gear, the color filter disc and each color filter to rotate respectively;

[0010] At least seven magnetic induction positioning assemblies are provided, each of which comprises a Hall element and a magnet corresponding to the Hall element, and the color filter, the revolving disc, the color filter disc and one of the pattern discs are provided with the magnet.

[0011] In some embodiments, the color filter has a color ring with linearly gradient color.

[0012] In some embodiments, the color wheel is semi-circular, and the color of the color wheel gradually changes from the middle to the two ends.

[0013] In some embodiments, the color filter assembly further comprises a center column vertically arranged on the substrate, the color filter is sleeved on the center column, and the center column is provided with a plurality of spacer columns.

[0014] In some embodiments, the number of color filters of the color filter assembly is two.

[0015] In some embodiments, the color filter comprises a yellow filter, a magenta filter, a cyan filter and a color temperature correction filter.

[0016] In some embodiments, the color filter comprises a pressing plate and a semi-circular ring, the pressing plate is coaxially connected with the semi-circular ring, the pressing plate has an outwardly extending pressing edge, and the pressing edge is provided with the magnet.

[0017] In some embodiments, the transmission mechanism comprises a stepping motor, a synchronous belt, a driving gear and a driven gear, the stepping motor is fixedly arranged on the end surface of the substrate away from the color filter assembly, the output shaft of the stepping motor penetrates through the substrate and is connected with the driving gear, each color filter, the revolving disc, the rotating gear and the color disc are provided with the driven gear, and the driven gear is drivingly connected with the driving gear through the synchronous belt.

[0018] In some embodiments, a heat dissipation fan is further included, the heat dissipation fan is arranged on the end surface of the substrate away from the rotating disc, the air outlet direction of the heat dissipation fan is towards the light projecting hole, and the air inlet is towards the color filter assembly.

[0019] In some embodiments, a top plate is further included, the top plate is fixedly arranged on the substrate through a support column, the top plate is provided with a notch avoiding the rotating disc, and the color filter assembly and the color disc are located between the substrate and the top plate.

[0020] The technical scheme provided by the utility model can have the following beneficial effects:

[0021] The compact color mixer comprises two groups of color filter assemblies, a rotating disc, a color disc, a transmission mechanism and a magnetic induction positioning assembly, the color filters of the two groups of color filter assemblies are coaxially and laminated, the color disc is integrated on one of the color filter assemblies, the integrated structure of the rotating disc supports multi-axis cooperative movement, ensures the smoothness of color switching, realizes the functions of light color rendering, changing the shape of a light beam and switching a light effect pattern, and reduces the occupied longitudinal space in structure; in addition, the compact color mixer realizes non-contact detection by using the magnetic induction positioning assembly, ensures the real-time closed-loop control of each color filter, the revolving disc and the color disc, avoids wear and error accumulation, and improves positioning accuracy and response speed. Attached Figure Description

[0022] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0023] Figure 1 This is a schematic diagram of the overall structure of the compact color mixer shown in an embodiment of the present invention;

[0024] Figure 2 This is another structural schematic diagram of the compact color mixer shown in this embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the compact color mixer after the top plate has been removed, as shown in an embodiment of this utility model;

[0026] Figure 4 This is an exploded view of a compact color mixer according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram showing the cooperation between the rotating disk, the magnetic induction positioning component and the transmission mechanism in an embodiment of this utility model;

[0028] Figure 6 This is another schematic diagram showing the cooperation between the rotating disk, the magnetic induction positioning component and the transmission mechanism in an embodiment of this utility model;

[0029] Figure 7 This is a schematic diagram showing the cooperation between the color filter component and the color disc in an embodiment of this utility model;

[0030] Figure 8 This is an assembly diagram of the color filter assembly shown in an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure of the color filter assembly shown in an embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of the structure of the color filter shown in an embodiment of the present invention.

[0033] Figure label:

[0034] 1. Substrate; 10. Light projection hole;

[0035] 2. Color filter assembly; 20. Color filter sheet; 200. Color ring; 201. Pressure plate; 202. Semi-circular ring; 203. Edge pressing; 21. Center column; 22. Spacer column;

[0036] 3, rotating disc; 30, rotating shaft; 31, revolving disc; 310, first light transmission hole; 32, rotating gear; 33, pattern disc;

[0037] 4, color disc; 40, second light transmission hole; 41, pure color disc;

[0038] 5, transmission mechanism; 50, stepping motor; 51, synchronous belt; 52, driving gear; 53, driven gear;

[0039] 6, magnetic induction positioning assembly; 61, Hall element; 62, magnet;

[0040] 7, heat dissipation fan; 8, top plate. DETAILED DESCRIPTION

[0041] The preferred embodiments of the present application will be described in detail below with reference to the drawings. Although the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0042] The terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0043] It should be understood that although the terms "first", "second", "third" and the like can be used in the present application to describe various information, these information should not be limited by these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0044] The technical solutions of the embodiments of the present application will be described in detail below with reference to the drawings.

[0045] Referring to Figures 1-10The utility model discloses a compact color mixer, applied to stage lighting, including substrate 1 and install color filter subassembly 2, rotating disc 3, color sheet disc 4, transmission mechanism 5 and magnetic induction positioning assembly 6 on substrate 1, substrate 1 adopts lightweight aluminum material or engineering plastics to make, and the middle part is provided with circular light projection, as white light transmission channel, two color filter subassembly 2 symmetric distribution in light projection hole 10 both sides, and each color filter subassembly 2 includes at least two coaxial laminated color filter 20, is used for the dynamic color mixing of gradual change, rotating disc 3 is used for realizing light and shadow cutting, and rotating disc 3 and two color filter subassembly 2 are in triangular layout, and light projection hole 10 is located in the center of triangle, and color sheet disc 4 is coaxially integrated in the top of one color filter subassembly 2, is used for the light rendering of pure color, and transmission mechanism 5 and magnetic induction positioning assembly 6 drive and position each rotating component respectively, ensure the precision of multi-axis cooperation.

[0046] Specifically, the color filter 20 has a blank area and a color area for light rendering, the color filter 20 can adopt a yellow color filter 20, a magenta color filter 20, a cyan color filter 20 and a color temperature correction color filter 20, the color filters 20 in one color filter subassembly 2 can be freely matched, the color temperature correction color filter 20 is used to reduce the color temperature of the light source from a high color temperature to a certain degree of low color temperature, preferably, the color temperature correction color filter 20 linearly reduces the color temperature of the light source from 6500K to 3200K by plating a cerium oxide-silicon dioxide composite coating, and the color temperature deviation is ±100K. In the preferred embodiment, to avoid the problem of black edges of the color mixer in any color mixing, the color filter 20 can adopt a semi-ring color ring 200, the color linearly changes from the center to both ends, for example, cyan to transparent, and the color filter 20 is made of a high-temperature-resistant polyester film, the surface is deposited with a gradient light filtering coating by a vacuum coating process, the coating thickness is 50-100nm, and the light transmittance of the color ring 200 gradually changes from 10% at the center to 90% at both ends. The color filters 20 are stacked by a center column 21, and a spacing column 22 is arranged between the color filters 20, the spacing column 22 is used to adjust the interlayer spacing of the color filters 20, and the color filters 20 are made of a high-temperature-resistant polyester film and are plated with a gradient light filtering coating. When the color filter 20 rotates, the color area is above the light projection hole 10.

[0047] The rotating disc 3 is composed of a rotating shaft 30, a revolving disc 31, a pattern disc 33 and a rotating gear 32. The rotating shaft 30 is rotatably arranged on the base plate 1. The revolving disc 31 is coaxially connected with the rotating shaft 30 and is fixed. The revolving disc 31 is located at the top end of the rotating shaft 30. The rotating gear 32 is located between the revolving disc 31 and the base plate 1. The revolving disc 31 is provided with a first light-transmitting hole 310 and a plurality of mounting holes for placing the pattern disc 33. The number of the mounting holes can be six. Each pattern disc 33 has different hollow patterns. The hollow patterns of the pattern disc 33 include sawtooth, wave, honeycomb and snowflake structures. The pattern width is 0.5-2 mm. After the light beam penetrates, the light and shadow cutting effect of the corresponding shape is formed. The cutting angle can be adjusted by the rotating gear 32, and the range is 0-360°. The pattern disc 33 is composed of a rotating ring and a gear ring. The hollow pattern is arranged on the rotating ring. The rotating ring is connected and fixed with the gear ring. The rotating ring is accommodated in the mounting hole, and the rotating ring can rotate in the mounting hole. Each pattern disc 33 surrounds the axis of the revolving disc 31. Each pattern disc 33 is engaged and connected with the rotating gear 32. Under the drive of the transmission mechanism 5, the rotating gear 32 rotates and drives each pattern disc 33 to rotate. When one of the pattern discs 33 is located above the light-throwing hole 10, the light and shadow cutting can be realized.

[0048] The color disc 4 is coaxially arranged on the top of one group of the color filter assemblies 2. The color disc 4 is provided with a plurality of pure color discs 41, such as magenta, green, blue, yellow, carmine, cyan and orange. When the color of the light rendering needs pure color, the blank area in the two groups of color filter assemblies 2 is located above the light-throwing hole 10. The pure color corresponding to the color disc 4 is used for light rendering. When dynamic color mixing is needed, the first light-transmitting hole 310 of the color disc 4 is located above the light-throwing hole 10, and the color area of the color filter assembly 2 is located above the light-throwing hole 10. Generally, the pure color disc 41 in the color disc 4 and the color filter disc 20 do not perform light rendering at the same time, so as to avoid too high light loss rate.

[0049] Please refer to Figure 2 , combined with Figure 1 , Figure 3 and Figure 4, the revolution disc 31, the rotation gear 32, the color disc 4 and each color filter 20 are rotated through independent transmission mechanism 5, so the number of transmission mechanism 5 installed on the substrate 1 corresponds to the number of components required to rotate. When each group of color filter assembly 2 is provided with two color filters 20, the number of transmission mechanism 5 provided on the substrate 1 is seven. When one group of color filter assembly 2 is provided with three color filters 20, the number of transmission mechanism 5 is eight. The transmission mechanism 5 includes a stepper motor 50, a synchronous belt 51, a driving gear 52 and a driven gear 53, in order to improve the space utilization of the color mixer, the seven stepper motors 50 are installed on the side of the substrate 1 away from the rotating disc 3, the output shaft of the stepper motor 50 is connected to the driving gear 52 through the substrate 1, and correspondingly, the revolution disc 31, the rotation gear 32, the color disc 4 and each color filter 20 are coaxially connected with the driven gear 53, and the driving gear 52 and the driven gear 53 are connected through the synchronous belt 51.

[0050] Please refer to Figure 3 , and combine Figure 5 , Figure 6 , Figures 8-10 , the revolution disc 31, the rotation gear 32, the color disc 4 and each color filter 20 are rotated through independent transmission mechanism 5, but due to the differences in response speed, load characteristics or control parameters of the stepper motor 50, the stage lamp will accumulate rotation tolerance after running for a period of time, which will affect the uniformity and stability of the color mixing. In order to ensure the color mixing effect, the above-mentioned revolution disc 31, rotation gear 32, color disc 4 and each color filter 20 are positioned through magnetic induction positioning assembly 6, the position signal of the magnet 62 is detected by the Hall element 61 in real time, and the signal is transmitted to the controller; the controller adjusts the driving pulse of the stepper motor 50 according to the deviation between the preset angle and the detected angle, so as to realize the closed-loop positioning of the color filter 20, the revolution disc 31 and other components, and the error precision is ≤0.1°.

[0051] Please continue to refer to Figure 5 and Figure 6 , the two groups of magnetic induction positioning assembly 6 are used to detect the positioning of the revolution disc 31 and the rotation gear 32, the Hall elements 61 of the two groups of magnetic induction positioning assembly 6 are installed on the substrate 1, the magnet 62 of one group of magnetic induction positioning assembly 6 is installed on the revolution disc 31, and the magnet 62 of the other group of magnetic induction positioning assembly 6 is installed on any pattern disc 33, the distance between the two magnets 62 and the axis of the revolution disc 31 is not equal, so as to stagger the two Hall elements 61 installed on the substrate 1, and ensure the positioning accuracy. In specific implementation, a plurality of pattern discs 33 are rotated through the rotation gear 32, the pattern disc 33 with the magnet 62 is taken as the 0 base point, after the initial angle of each pattern disc 33 is adjusted during assembly, the parameters of each pattern disc 33 can be stored, and the subsequent positioning projection can be directly called out.

[0052] Please continue to refer toFigures 8-10 wherein Figure 8 The four sets of magnetic induction positioning components 6 shown in the above embodiment are used for positioning detection of the color filter 20, which is composed of a pressing plate 201 and a semicircular ring 202. The pressing plate 201 is coaxially connected with the semicircular ring 202 by screws. The pressing plate 201 has an outwardly extending pressing edge 203, which is in close contact with the side edge of the semicircular ring. The magnet 62 is mounted on the pressing edge 203. Preferably, in order to ensure the positioning accuracy, the distances from the magnets of each color filter to the axis are not equal.

[0053] Referring to Figure 2 The compact color mixer further comprises heat dissipation fans 7 arranged on the back of the base plate 1. The air outlets of the heat dissipation fans 7 face the light projection hole 10. The base plate 1 is provided with a through hole. The air inlet of the heat dissipation fan 7 corresponds to the through hole. The air inlet of the heat dissipation fan 7 faces the color filter assembly 2, so as to suck air from the surroundings of the color filter assembly 2 and accelerate the air flow around the color filter assembly 2, thereby achieving heat dissipation of the color filter assembly 2 and preventing the deterioration of the light filtering coating caused by high temperature. Correspondingly, the number of heat dissipation fans 7 can be two. One of the heat dissipation fans 7 blows air towards the light projection hole 10, and the other heat dissipation fan 7 blows air towards the light source assembly on the base plate 1.

[0054] Referring to Figure 1 The compact color mixer further comprises a top plate 8, which is fixed to the base plate 1 by a support column. The top plate 8 is made of lightweight aluminum or engineering plastic. The top plate 8 is located above the front surface of the base plate 1. The top plate 8 is a flat plate with a size smaller than that of the base plate 1. The top plate 8 is fixed to the base plate 1 by a support column. The top plate 8 is provided with a gap for avoiding the rotating disc 3. The top plate 8 and the base plate 1 form a sandwich layer for mounting the color filter assembly 2 and the color disc 4. The two ends of the central column 21 are fixed to the base plate 1 and the top plate 8, respectively, so as to improve the structural strength of the color filter assembly 2 and the color disc 4.

[0055] The working process of the compact color mixer is as follows:

[0056] Gradual color mixing mode: the controller sends a command, and the transmission mechanism 5 drives the color ring 200 of the corresponding color filter 20 to rotate above the light projection hole 10. The first light transmission hole 310 of the revolving disc 31 is synchronously aligned with the second light transmission hole 40 of the color disc 4. The magnetic induction positioning component 6 real-time calibrates the angle of the color filter 20, thereby realizing gradual color mixing output.

[0057] Pure color mode: the transmission mechanism 5 drives the color ring 200 of each color filter 20 to avoid the light projection hole 10. The pure color disc 41 of the color disc 4 is cut into the light path, thereby outputting stable monochromatic light.

[0058] Pattern mode: the transmission mechanism 5 drives the revolving disc 31 to drive the pattern disc 33 to revolve. The self-rotating gear 32 synchronously drives the pattern disc 33 to self-rotate, thereby combining with the hollow pattern to dynamically cut light, thereby forming a complex light and shadow effect.

[0059] The above has described various embodiments of the present application, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

1. A compact color mixer for a stage light, characterized by, The application relates to a color filter device, which comprises the following components: a substrate (1) provided with a light-throwing hole (10); two groups of color filter assemblies (2) arranged on the substrate (1) and comprising at least two coaxially arranged color filter sheets (20); a rotating disc (3) arranged on the substrate (1) and comprising a rotating shaft (30), a revolving disc (31) and a rotating gear (32), the rotating shaft (30) is rotatably arranged on the substrate (1), the revolving disc (31) is coaxially connected with the rotating shaft (30), the revolving disc (31) is provided with a first light-transmitting hole (310) surrounding the rotating shaft (30) and a plurality of pattern discs (33), the pattern discs (33) are rotatably connected with the revolving disc (31), the rotating gear (32) is sleeved on the rotating shaft (30) and is in meshing connection with the pattern discs (33); a color filter disc (4) coaxially arranged on one of the color filter assemblies (2), the color filter disc (4) is provided with a second light-transmitting hole (40) surrounding the shaft center and a plurality of pure color filter sheets (41); at least seven transmission mechanisms (5) for respectively driving the revolving disc (31), the rotating gear (32), the color filter disc (4) and each color filter sheet (20) to rotate; at least seven magnetic induction positioning assemblies (6), the magnetic induction positioning assembly (6) comprises a Hall element (61) and a magnet (62) corresponding to the Hall element (61), and the color filter sheet (20), the revolving disc (31), the color filter disc (4) and one of the pattern discs (33) are all provided with the magnet (62). The color filter sheet (20) has a color ring (200) with linearly changing colors. The color ring (200) is a half ring, and the color of the color ring (200) changes from the middle part to the two ends. The color filter assembly (2) further comprises a center column (21) vertically arranged on the substrate (1), the color filter sheet (20) is sleeved on the center column (21), and the center column (21) is provided with a plurality of spacing columns (22), and the spacing columns (22) are used for adjusting the interval between the color filter sheets (20). The number of the color filter sheets (20) of the color filter assembly (2) is two. The color filter sheet (20) comprises a yellow color filter sheet, a magenta color filter sheet, a cyan color filter sheet and a color temperature correction color filter sheet. The color filter sheet (20) comprises a pressing plate (201) and a half circular ring (202), the pressing plate (201) is coaxially connected with the half circular ring (202), the pressing plate (201) has a pressing edge (203) extending outward, and the pressing edge (203) is provided with the magnet (62).

2. The compact color mixer of claim 1, wherein, The transmission mechanism (5) comprises a stepping motor (50), a synchronous belt (51), a driving gear (52) and a driven gear (53), the stepping motor (50) is fixedly arranged on one end surface of the substrate (1) away from the color filter assembly (2), the output shaft of the stepping motor (50) penetrates through the substrate (1) and is connected with the driving gear (52), each color filter sheet (20), the revolving disc (31), the rotating gear (32) and the color filter disc (4) are all provided with the driven gear (53), and the driven gear (53) is in transmission connection with the driving gear (52) through the synchronous belt (51).

3. The compact color mixer of claim 2, wherein, ​ 4. The compact color mixer of claim 3, wherein, ​ 5. The compact color mixer of claim 4, wherein, ​ 6. The compact color mixer of claim 5, wherein, ​ 7. The compact color mixer of claim 6, wherein, ​ 8. The compact color mixer of claim 1, wherein, ​ 9. The compact color mixer of claim 1, wherein, Further comprising a heat dissipation fan (7) arranged on the end surface of the base plate (1) away from the rotating disc (3), the air outlet direction of the heat dissipation fan (7) is towards the light projecting hole, and the air inlet is towards the color filter assembly (2).

10. The compact color mixer of claim 1, wherein, Further comprising a top plate (8) fixed on the base plate (1) by a support column, the top plate (8) is provided with a notch avoiding the rotating disc (3), and the color filter assembly (2) and the color disc (4) are located between the base plate (1) and the top plate (8).

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