WO2019076147A1 - 一种舞台灯色温补偿系统及方法 - Google Patents

一种舞台灯色温补偿系统及方法 Download PDF

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Publication number
WO2019076147A1
WO2019076147A1 PCT/CN2018/103300 CN2018103300W WO2019076147A1 WO 2019076147 A1 WO2019076147 A1 WO 2019076147A1 CN 2018103300 W CN2018103300 W CN 2018103300W WO 2019076147 A1 WO2019076147 A1 WO 2019076147A1
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WO
WIPO (PCT)
Prior art keywords
color temperature
temperature compensation
compensation sheet
stage lamp
sheet
Prior art date
Application number
PCT/CN2018/103300
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English (en)
French (fr)
Inventor
蒋伟楷
Original Assignee
广州市浩洋电子股份有限公司
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Filing date
Publication date
Application filed by 广州市浩洋电子股份有限公司 filed Critical 广州市浩洋电子股份有限公司
Priority to EP18868271.0A priority Critical patent/EP3699485A4/en
Publication of WO2019076147A1 publication Critical patent/WO2019076147A1/zh
Priority to US16/848,295 priority patent/US10969073B2/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
    • F21S10/026—Lighting devices or systems producing a varying lighting effect changing colors by movement of parts, e.g. by movement of reflectors or light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/003—Controlling the distribution of the light emitted by adjustment of elements by interposition of elements with electrically controlled variable light transmissivity, e.g. liquid crystal elements or electrochromic devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/006—Controlling the distribution of the light emitted by adjustment of elements by means of optical elements, e.g. films, filters or screens, being rolled up around a roller
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/08—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/105—Outdoor lighting of arenas or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to the field of stage lamp technology, and more particularly to a stage lamp color temperature compensation system and method.
  • stage lights In order to enrich the stage art effect and set off the atmosphere, the stage lights need to make many effects to meet the requirements of the stage lighting engineer, such as color effects, pattern effects, prism effects, flame effects, beam effects, beam zooming effects, light and darkness. Dimming effect, etc.
  • the dimming function of the stage light is a very important function in the stage scene, and its main function is to adjust the brightness of the stage lighting from 0-100%.
  • the dimmer used in the existing stage lamp technology is directly blocked in front of the light source, and is dimmed by blocking the light-emitting area of the light source, or the stage light of the LED light source directly uses electronic dimming, which basically satisfies the needs of the general stage scene, but In the process of dimming, the color temperature of the light changes with the brightness of the light, and the atmosphere of the stage scene does not meet the requirements of the lighting engineer. As the stage scene improves the light quality of the stage lamps, more and more lighting engineers demand that the quality of the light cannot be reduced during the dimming process. In particular, the important indicator of the color temperature of the light needs to be maintained during the dimming process. Consistent.
  • the object of the present invention is to overcome the deficiencies of the prior art and provide a stage lamp color temperature compensation system.
  • the color temperature of the light can be compensated in real time, so that the color temperature of the light is basically in the dimming process. Consistently, improve the stability of the light output quality of the luminaire, simple structure and convenient operation.
  • Providing a stage lamp color temperature compensation system comprising: a light source and a dimming device for dimming the light source, and a color temperature compensation sheet for performing color temperature compensation on the light from the dimming device, and controlling the color temperature compensation sheet to move The driving mechanism; the color temperature compensation sheet has different color brightness changes, and the driving mechanism drives the color temperature compensation sheet to cut into the cut-out optical path to realize color temperature compensation.
  • the color temperature compensation is performed by the color temperature compensation sheet; the displacement of the color temperature compensation sheet into the cut optical path is the distance between the color temperature compensation sheet and the optical axis entering and exiting the optical path.
  • the color temperature of the light of different brightness emitted by the light source is compensated in real time, so that the color temperature of the light during the dimming process is basically Consistently, improve the stability of the light output quality of the luminaire, simple structure and convenient operation.
  • the driving mechanism comprises a motor and a belt drive structure driven by the motor, and the color temperature compensation sheet is disposed on the belt of the belt transmission structure.
  • the color temperature compensation piece includes a color temperature compensation area and a fixed end, and the fixed end is used for fixing the color temperature compensation piece to the conveyor belt; when the motor drive belt transmission structure rotates, the conveyor belt rotates, and the color temperature compensation piece moves to cut into the cut light path, thereby realizing color temperature compensation.
  • the driving method is simple and easy to realize, and the color temperature compensation sheet can be cut into and cut out by the forward rotation and the reverse rotation of the motor, which is convenient for control.
  • the belt transmission structure further comprises a driving wheel and a driven wheel sleeved in two ends of the conveyor belt, wherein the motor drives the driving wheel to rotate, specifically, the driving shaft of the motor is connected with the driving wheel;
  • the color temperature compensation system further includes The auxiliary sliding device, the color temperature compensation sheet is slidably connected to the auxiliary sliding device.
  • the number of color temperature compensation sheets is at least one. Further preferably, when the number of the color temperature compensating sheets is two, the driving mechanism drives the color temperature compensating sheets to move toward or away from each other to cut the two color temperature compensating sheets into the cut-out optical path. This arrangement is easier to increase the cut-in and cut-out speed of the color temperature compensation sheet than a color temperature compensation sheet.
  • the motor and the belt transmission structure are one, and the two color temperature compensation sheets are respectively disposed on the two sides of the conveyor belt, so that the setting not only facilitates the movement speed of the two color temperature compensation sheets, but also simplifies the driving mechanism. It is easy to control and saves cost; or the motor and belt transmission structure are two, and two color temperature compensation sheets are respectively disposed on two conveyor belts.
  • the two color temperature compensation sheets are provided with a height difference, and can partially overlap when the two color temperature compensation sheets move toward each other.
  • the contact can only be overlapped, and the partial overlap enables the light at any position on the optical path to be compensated for the color temperature, preventing the light at the position of the contact line from being compensated for the color temperature when the two color temperature compensation sheets are in parallel contact. The situation arises, which in turn affects the color temperature compensation effect.
  • the color temperature compensation sheet uses the same hue as a reference color, and compensates for or reduces the color temperature of the light passing therethrough by the brightness change of the reference color. Further preferably, the color temperature compensation sheet compensates for an increase in color temperature of light passing therethrough by using a change in brightness of blue, or the color temperature compensation sheet compensates for a decrease in color temperature of light passing therethrough by using a change in brightness of yellow .
  • the color temperature compensation sheet is perpendicular to the optical axis.
  • the brightness change of the color temperature compensation sheet is uniformly changed to simplify the design and production process of the color temperature compensation sheet; or the brightness change of the color temperature compensation sheet is determined according to the color temperature compensation value required by the light source under different brightness conditions.
  • the driving mechanism can control the moving speed of the color temperature compensation sheet when cutting into the cut light path according to the dimming speed.
  • the light source is a conventional light source
  • the dimming device of the conventional light source is a dimming piece
  • the dimming piece is located between the color temperature compensating piece and the light source, and the dimming piece blocks and dims the light passing through the cut and cut light path.
  • the light source is an LED light source
  • the dimming device of the LED light source uses electronic dimming.
  • Conventional light sources include non-LED lights and non-laser lights.
  • the light adjustment sheet and the color temperature compensation sheet are disposed on the same driving mechanism; the displacement of the color temperature compensation sheet cut into the optical path is smaller than the displacement of the light cutting sheet cut into the optical path, and the displacement is relative to the optical axis. The distance of the light path.
  • the dimming piece and the color temperature compensating piece are disposed on the same driving mechanism, which can save the internal space of the stage lamp luminaire, and the color temperature compensating piece and the dimming piece are matched and cut into the cutting optical path.
  • a reflector is further included, and the color temperature compensation sheet is located at a position between the focus of the first focus of the light source and the reflector.
  • This arrangement can avoid optical imaging of the color temperature compensation sheet.
  • the color temperature compensation sheet is disposed at a position close to the light source and away from the focus of the first focus of the light source.
  • Another object of the present invention is to provide a stage lamp color temperature compensation method.
  • the use of the above stage stage color temperature compensation system includes the following steps:
  • the driving mechanism controls the movement of the color temperature compensation sheet according to the displacement value of the color temperature compensation sheet under different brightness conditions.
  • Factors affecting color temperature include optical path focusing, magnification, lens refraction, etc. Therefore, the design of color temperature compensation sheet brightness changes needs to be based on specific test data, there is no unified calculation formula, and different stage lamp models need to be determined.
  • the color temperature compensation value can be appropriately reduced within the brightness standard range, and the light output brightness reaches the required brightness as a priority.
  • the invention relates to a stage lamp color temperature compensation system, which is provided with a color temperature compensation sheet and a driving mechanism, and uses a driving mechanism to control the cutting and cutting of the color temperature compensation sheet to compensate the color temperature of the light of different brightness emitted by the light source in real time, so that the dimming is performed.
  • the color temperature of the light is basically the same, the stability of the light output quality of the lamp is improved, the structure is simple, and the operation is convenient.
  • FIG. 1 is a simplified structural diagram of an optical path of a stage lamp color temperature compensation system in the first embodiment.
  • FIG. 2 is a schematic structural view of a color temperature compensation sheet in the first embodiment.
  • 3 is a schematic view showing the connection between the color temperature compensation sheet and the driving mechanism in the first embodiment.
  • FIG. 5 is a graph showing a color temperature compensation curve calculated according to a color temperature luminance change curve in the first embodiment.
  • FIG. 6 is a graph showing changes in color temperature and brightness after the color temperature compensation system is used in the first embodiment.
  • a schematic diagram of a stage lamp color temperature compensation system includes a light source 1 and a dimming device 3 for dimming the light source 1, and further includes light for coming out from the dimming device 3.
  • a color temperature compensation sheet 4 for color temperature compensation, and a driving mechanism 9 for controlling the movement of the color temperature compensation sheet 4;
  • the color brightness compensation sheet 4 has a different color brightness change, and the driving mechanism 9 drives the color temperature compensation sheet 4 to cut into the cut light path to realize Color temperature compensation.
  • the light source 1 is a conventional light source, and the conventional light source includes a non-LED lamp and a non-laser lamp.
  • the dimming device 3 of the conventional light source is a dimming piece, and the dimming piece is located between the color temperature compensating plate 4 and the light source 1.
  • the dimming piece occludes and dims the light passing through the cut-out optical path; the dimming piece and the color temperature compensating piece 4 are disposed on the same driving mechanism 9, which can save the internal space of the stage lamp luminaire and compensate the color temperature.
  • the sheet 4 is matched with the dimming sheet to cut into and cut out the optical path; the displacement of the color temperature compensation sheet 4 into the optical path is smaller than the displacement of the dimming piece into the optical path, the displacement is the distance from the optical axis into and out of the optical path; and the reflective cup 2 is further included, the color temperature
  • the compensation sheet 4 is located between the focus of the first focus of the light source 1 and the reflector 2, so that the optical temperature compensation sheet can be prevented from being optically imaged.
  • the color temperature compensation sheet 4 in order to reduce the size of the color temperature compensation sheet 4, the color temperature compensation sheet 4 is disposed at a position close to the light source 1 and away from the focus of the first focus of the light source 1.
  • the light emitted by the light source 1 is reflected by the reflector 2, and propagates in the direction of the optical axis.
  • the color temperature compensation is performed by the color temperature compensation sheet 4; the displacement of the color temperature compensation sheet 4 into the cut light path is the color temperature compensation sheet 4
  • FIG. 1 omits some optical components and the drive mechanism 9 for simplicity.
  • the stage lamp color temperature compensation system of the present invention sets the color temperature compensation sheet 4 and the driving mechanism 9 and controls the cutting and cutting of the color temperature compensation sheet 4 by using the driving mechanism 9, so as to perform real-time on the color temperature of the light of different brightness emitted by the light source 1.
  • the compensation makes the color temperature of the light in the dimming process basically the same, improves the stability of the light output quality of the lamp, has a simple structure and is convenient to operate.
  • the driving mechanism 9 includes a motor and a belt drive structure driven by the motor, and the color temperature compensation sheet 4 is disposed on the belt 6 of the belt transmission structure.
  • the color temperature compensation sheet 4 includes a color temperature compensation area 41 and a fixed end 42 for fixing the color temperature compensation sheet 4 to the conveyor belt 6; when the motor drive belt transmission structure rotates, the conveyor belt 6 rotates, and the color temperature compensation sheet 4 is moved to cut in.
  • the optical path is cut out to realize the color temperature compensation, and the driving method is simple and easy to realize.
  • the color temperature compensation sheet 4 can be cut into and cut out by the forward rotation and the reverse rotation of the motor, which is convenient for control.
  • the belt transmission structure further includes a driving wheel and a driven wheel which are sleeved in the two ends of the conveyor belt 6.
  • the motor drives the driving wheel to rotate.
  • the driving shaft 5 of the motor is connected with the driving wheel;
  • the system also includes an auxiliary slide device, and the color temperature compensation sheet 4 is slidably coupled to the auxiliary slide device.
  • the conveyor belt 6 drives the color temperature compensation sheet 4 to move, the color temperature compensation sheet 4 slides on the auxiliary sliding device, which can improve the smoothness of the movement of the color temperature compensation sheet 4, thereby ensuring the color temperature compensation effect.
  • the number of color temperature compensation sheets 4 is at least one.
  • the driving mechanism 9 drives the color temperature compensation sheets 4 to move toward or away from each other to cut the two color temperature compensation sheets 4 into the cut-out optical paths. This arrangement is easier to increase the cut-in and cut-out speed of the color temperature compensation sheet than a color temperature compensation sheet.
  • the number of color temperature compensation sheets 4 is two.
  • the motor, the belt transmission structure and the two color temperature compensation sheets 4 are mainly connected in two ways: the first one is that the motor and the belt transmission structure are one, and the two color temperature compensation sheets 4 are respectively disposed on the conveyor belt 6 On the side, this arrangement not only facilitates the same speed of moving the two color temperature compensation sheets 4, but also simplifies the driving mechanism 9, which is convenient for control and saves cost; the second is that the motor and the belt transmission structure are two, Two color temperature compensation sheets 4 are provided on the two conveyor belts 6, respectively.
  • the first type is used for the connection mode of the motor, the belt transmission structure and the two color temperature compensation sheets 4.
  • the two color temperature compensation sheets 4 are provided with a height difference, and can partially overlap when the two color temperature compensation sheets 4 move toward each other.
  • the contact can only be overlapped, and the partial overlap enables the light at any position on the optical path to be compensated for the color temperature, preventing the light at the position of the contact line when the two color temperature compensation sheets 4 are in parallel contact. The condition of compensating for the color temperature appears, which in turn affects the color temperature compensation effect.
  • the color temperature compensation sheet 4 uses the same hue as the reference color, and compensates or reduces the compensation for the increase in the color temperature of the light passing through the light of the reference color.
  • the color temperature compensation sheet 4 compensates for the increase in color temperature of the light passing therethrough by using a change in brightness of the blue color, or the color temperature compensation sheet performs color temperature on the light passing therethrough by using a change in brightness of yellow. Reduce the compensation.
  • the reference color selected as the compensation for the increase in color temperature is not limited to blue, and the reference color selected as the compensation for the decrease in color temperature is not limited to yellow.
  • the color temperature compensation sheet 4 is perpendicular to the optical axis.
  • the brightness change of the color temperature compensation sheet 4 is uniformly changed to simplify the design and production process of the color temperature compensation sheet 4; the driving mechanism 9 can control the movement of the color temperature compensation sheet 4 when cutting into the cut light path according to the dimming speed. speed.
  • the embodiment further provides a stage lamp color temperature compensation method, which uses the above color temperature compensation system, and includes the following steps:
  • the relationship between the brightness of the stage lamp and the change of the color temperature is tested by the illuminance meter, the stage lamp sample machine of the applied model is dimmed, and the color temperature brightness change curve is obtained by testing the light output effect, as shown in the figure. 4; a certain brightness value can be taken as the termination compensation point, in this example, the brightness is 3% as the termination compensation point, and the part below 3% is not compensated, so the dimming range is 100%-3%;
  • the color temperature compensation curve can be obtained, as shown in FIG. 5, and it is judged that the compensation of the stage lamp dimming brightness needs to be increased, and the maximum compensation color temperature is calculated to be 2100K, which is two in this embodiment.
  • the color temperature compensation sheet 4 performs color temperature compensation, and accordingly, the reference color of the color temperature compensation region 41 of the two color temperature compensation sheets 4 is blue, and the total range of brightness change is the color temperature rise of 2100K;
  • the color temperature compensation sheet 4 is mounted on the driving mechanism 9 and loaded into the detected stage light.
  • the present invention controls the driving mechanism 9 to move according to the color temperature compensation curve shown in FIG. 5, and then adjusts the displacement of the color temperature compensation sheet 4 according to the light output effect. Numerical value, and record the distance that the color temperature compensation sheet 4 should move when the dimmer is at different positions; S7.
  • the driving mechanism 9 controls the two color temperature compensation sheets according to the displacement values of the color temperature compensation sheet 4 under different brightness conditions. 4 Move to cut in and out the light path to complete the process of color temperature compensation.
  • test data obtained as shown in Table 1 and the new color temperature brightness change curve are shown in Fig. 6. It can be seen from Table 1 that the color temperature change varies with the brightness. Control is within 300K.
  • the dimming range is usually 100%-0%.
  • the low-luminance part of the dimming has little meaning in actual use, and the color temperature varies greatly, so it can be taken according to actual conditions.
  • a certain brightness value is the termination compensation point.
  • the reference color is not limited to blue, and other cool color colors may be employed.
  • step S3 when the above step S3 is performed, the maximum value of the compensation color temperature can be appropriately increased, and the margin is reserved to avoid the insufficient compensation range of the color temperature in the stage lamp.
  • the position of the color temperature compensation sheet 4 in the optical axis direction from the light source 1 and the light adjustment sheet should be as close as possible to the light adjustment sheet to reduce the size of the color temperature compensation sheet 4.
  • step S6 due to the influence of the color temperature compensation sheet 4 on the brightness, the color temperature compensation value should be appropriately relaxed within the brightness standard range, and the brightness reaching the standard is prioritized.
  • the difference between the second embodiment and the first embodiment is that the brightness change of the color temperature compensation sheet 4 does not adopt a uniform change, and the brightness change varies according to the color temperature compensation value required by the light source 1 under different brightness conditions, which is uneven change, and the driving mechanism 9 Controls the moving speed of the color temperature compensation sheet 4 when cutting the optical path according to the dimming speed.
  • the driving shaft 5 can be rotated at a constant speed to control the movement of the two color temperature compensation sheets 4. In the control process, only the color temperature compensation sheet 4 is required to cut the direction of the cut light path and the displacement value.
  • the third embodiment is different from the first embodiment in that the light source 1 is an LED light source, and the dimming device 3 of the LED light source uses electronic dimming.

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  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

一种舞台灯色温补偿系统包括光源（1）与对光源进行调光的调光装置（3），还包括用于对从调光装置出来的光进行色温补偿的色温补偿片（4），及控制色温补偿片移动的驱动机构（9）；色温补偿片上的色彩明度变化不同，驱动机构驱动色温补偿片切入切出光路以实现色温补偿。这种舞台灯色温补偿系统，通过设置色温补偿片及驱动机构，并使用驱动机构控制色温补偿片的切入切出，以对光源发出的不同亮度的光的色温进行实时补偿，使得调光过程中光的色温基本保持一致，提高灯具光输出质量的稳定性，结构简单，操作方便。还公开了一种舞台灯色温补偿方法。

Description

一种舞台灯色温补偿系统及方法 技术领域
本发明涉及舞台灯技术领域，更具体地，涉及一种舞台灯色温补偿系统及方法。
 背景技术
为了丰富舞台美术效果、烘托气氛，舞台灯都需要做出许多的效果来达到舞台灯光师的要求，如颜色效果、图案效果、棱镜效果、火焰效果、光束效果、光束放大缩小效果、光的明暗调光效果等。其中舞台灯的调光功能作为舞台场景中很重要的一个功能，其主要的功能是把舞台灯具的光亮度从0-100%进行调节。现有舞台灯技术中使用的调光片直接挡在光源前面，通过挡住光源的发光面积进行调光，或者LED光源的舞台灯具直接使用电子调光，这个基本能满足一般舞台场景的需要，但是这个调光结构在调光的过程中，光的色温会随着光线的亮度变化而变化，导致舞台场景的气氛达不到灯光师的要求。随着舞台场景对舞台灯具光质量的提高，越来越多的灯光师要求，在调光的过程中光的质量不能下降，尤其要求光的色温这个重要指标需要在调光的过程中基本保持一致。
 技术问题
本发明的目的在于克服现有技术的不足，提供一种舞台灯色温补偿系统，当光源发出不同亮度的光时，能对光的色温进行实时补偿，以使光的色温在调光过程中基本保持一致，提高灯具光输出质量的稳定性，结构简单，操作方便。
 技术解决方案
为达到上述目的，本发明采用的技术方案是：
提供一种舞台灯色温补偿系统，包括光源与对光源进行调光的调光装置，还包括用于对从调光装置出来的光进行色温补偿的色温补偿片，及控制所述色温补偿片移动的驱动机构；所述色温补偿片上的色彩明度变化不同，驱动机构驱动色温补偿片切入切出光路以实现色温补偿。
光源发出的光经过调光装置调解亮度后，由色温补偿片进行色温补偿；色温补偿片切入切出光路的位移为色温补偿片相对光轴进出光路的距离。
上述方案中，通过设置色温补偿片及驱动机构，并使用驱动机构控制色温补偿片的切入切出，以对光源发出的不同亮度的光的色温进行实时补偿，使得调光过程中光的色温基本保持一致，提高灯具光输出质量的稳定性，结构简单，操作方便。
优选地，所述驱动机构包括电机及由电机驱动的带传动结构，色温补偿片设于带传动结构的传送带上。色温补偿片包括色温补偿区域及固定端，固定端用于将色温补偿片固定于传送带上；电机驱动带传动结构转动时传送带转动，并带动色温补偿片移动以切入切出光路，进而实现色温补偿，这种驱动方式简单易实现，通过电机的正转与反转即可实现色温补偿片切入切出光路，便于控制。进一步优选地，带传动结构还包括套设于传送带两端内的主动轮及从动轮，所述电机驱动主动轮转动，具体地，电机的驱动转轴与主动轮连接；所述色温补偿系统还包括辅助滑动装置，色温补偿片与辅助滑动装置滑动连接。当传送带带动色温补偿片移动时，色温补偿片在辅助滑动装置上滑动，这样能提高色温补偿片移动的平稳性，进而保证色温补偿效果。
优选地，所述色温补偿片数量至少为一个。进一步优选地，所述色温补偿片数量为两个时，所述驱动机构驱动色温补偿片相向运动或相离运动以使两个色温补偿片切入切出光路。这样设置相比于一个色温补偿片，便于提高色温补偿片的切入切出速度。
优选地，所述电机及带传动结构均为一个，两个色温补偿片分别设于传送带的两侧边上，这样设置不但便于使两个色温补偿片移动的速度相同，而且能简化驱动机构，便于控制的同时节省成本；或所述电机及带传动结构均为两个，两个色温补偿片分别设于两个传送带上。
优选地，所述两个色温补偿片设有高度差，当两个色温补偿片相向运动时能部分重叠。相比于两个色温补偿片只能接触不能重叠的情况，部分重叠使得光路上任何位置的光都能被补偿色温，防止两个色温补偿片平行接触时接触线位置处的光不能被补偿色温的情况出现，进而影响色温补偿效果。
优选地，所述色温补偿片使用同一色相作为基准颜色，通过基准颜色的明度变化对经过其的光进行色温的升高补偿或降低补偿。进一步优选地，所述色温补偿片通过使用蓝色的明度变化对经过其的光进行色温的升高补偿，或所述色温补偿片通过使用黄色的明度变化对经过其的光进行色温的降低补偿。
优选地，所述色温补偿片垂直于光轴。
优选地，所述色温补偿片的明度变化为均匀变化，用以简化所述色温补偿片的设计与生产过程；或所述色温补偿片的明度变化根据光源在不同亮度情况下需要的色温补偿值变化；驱动机构能根据调光速度控制色温补偿片切入切出光路时的移动速度。
优选地，所述光源为传统光源，传统光源的调光装置为调光片，调光片位于色温补偿片与光源之间，调光片通过切入切出光路对经过其的光进行遮挡调光；或所述光源为LED光源，LED光源的调光装置使用电子调光。传统光源包括非LED灯及非激光灯。进一步优选地，当光源为传统光源时，调光片与色温补偿片设于同一个驱动机构上；色温补偿片切入光路的位移小于调光片切入光路的位移，所述位移为相对光轴进出光路的距离。将调光片与色温补偿片设于同一个驱动机构上，能节约舞台灯灯具的内部空间，并且使所述色温补偿片与调光片配套切入切出光路。
优选地，还包括反光杯，所述色温补偿片位于光源第一次聚焦的焦点与反光杯之间的位置。这样设置能避免所述色温补偿片光学成像。进一步优选地，为减小所述色温补偿片的尺寸，将色温补偿片设置在靠近光源并远离光源第一次聚焦的焦点的位置。
本发明的另一个目的在于提供一种舞台灯色温补偿方法，使用上述舞台灯色温补偿系统包括如下步骤：
S1.选择待补偿色温的舞台灯型号；
S2.测试所述舞台灯调光过程中出光亮度变化情况，并根据出光亮度情况测试色温变化的相应情况，记录色温偏离标准色温的最大值，即色温补偿最大值；用照度计测试舞台灯调光过程中的亮度与色温；
S3.根据所述色温变化与所述出光亮度变化的关系以及所述色温补偿最大值设计色温补偿片的色彩明度变化范围，根据需要的色温升高补偿或降低补偿选择基准颜色；
S4.根据舞台灯空间结构设计所述色温补偿片在光路上的空间位置，并确定色温补偿片的尺寸大小，根据所述色温补偿片的尺寸、数量、色彩明度变化范围及基准颜色设计所述色温补偿片上色彩的明度变化；
S5.根据所述色温变化与所述出光亮度变化的关系确定不同亮度情况下需要的色温补偿值，根据所述色温补偿片的色彩明度变化情况、尺寸及色温补偿片在光路上的空间位置确定不同亮度情况下色温补偿片切入切出光路的位移数值；
S6.所述驱动机构根据不同亮度情况下色温补偿片的位移数值控制色温补偿片移动。
影响色温的因素除光源亮度变化，还包括光路调焦、放大、镜头折射等，因此色温补偿片明度变化的设计需要根据具体测试数据，没有统一的计算公式，并且需要确定不同舞台灯型号。
使用该色温补偿方法对舞台灯进行色温补偿时，由于色温补偿片对亮度的影响，可在亮度标准范围内适当减少色温补偿值，以所述出光亮度达到要求亮度为优先。
 有益效果
与现有技术相比，本发明的有益效果是：
本发明一种舞台灯色温补偿系统，通过设置色温补偿片及驱动机构，并使用驱动机构控制色温补偿片的切入切出，以对光源发出的不同亮度的光的色温进行实时补偿，使得调光过程中光的色温基本保持一致，提高灯具光输出质量的稳定性，结构简单，操作方便。
 附图说明
图1为实施例一中的一种舞台灯色温补偿系统的光路简化结构图。
图2为实施例一中色温补偿片的结构示意图。
图3为实施例一中色温补偿片与驱动机构的连接示意图。
图4为实施例一中使用该色温补偿系统之前的色温亮度变化曲线图。
图5为实施例一中根据色温亮度变化曲线计算的色温补偿曲线图。
图6为实施例一中使用该色温补偿系统之后的色温亮度变化曲线图。
 本发明的最佳实施方式
实施例一
本实施例一种舞台灯色温补偿系统的示意图如图1至图3所示，包括光源1与对光源1进行调光的调光装置3，还包括用于对从调光装置3出来的光进行色温补偿的色温补偿片4，及控制所述色温补偿片4移动的驱动机构9；所述色温补偿片4上的色彩明度变化不同，驱动机构9驱动色温补偿片4切入切出光路以实现色温补偿。
本实施例中，所述光源1为传统光源，传统光源包括非LED灯及非激光灯，传统光源的调光装置3为调光片，调光片位于色温补偿片4与光源1之间，调光片通过切入切出光路对经过其的光进行遮挡调光；调光片与色温补偿片4设于同一个驱动机构9上，能节约舞台灯灯具的内部空间，并且使所述色温补偿片4与调光片配套切入切出光路；色温补偿片4切入光路的位移小于调光片切入光路的位移，所述位移为相对光轴进出光路的距离；还包括反光杯2，所述色温补偿片4位于光源1第一次聚焦的焦点与反光杯2之间的位置，这样设置能避免所述色温补偿片光学成像。本实施例中，为减小所述色温补偿片4的尺寸，将色温补偿片4设置在靠近光源1并远离光源1第一次聚焦的焦点的位置。
光源1发出的光通过反光杯2反射，延光轴方向传播，经过调光装置调解亮度后，再由色温补偿片4进行色温补偿；色温补偿片4切入切出光路的位移为色温补偿片4相对光轴进出光路的距离；图1为了简化，省略了部分光学组件、以及驱动机构9。
本发明一种舞台灯色温补偿系统，通过设置色温补偿片4及驱动机构9，并使用驱动机构9控制色温补偿片4的切入切出，以对光源1发出的不同亮度的光的色温进行实时补偿，使得调光过程中光的色温基本保持一致，提高灯具光输出质量的稳定性，结构简单，操作方便。
其中，所述驱动机构9包括电机及由电机驱动的带传动结构，色温补偿片4设于带传动结构的传送带6上。色温补偿片4包括色温补偿区域41及固定端42，固定端42用于将色温补偿片4固定于传送带6上；电机驱动带传动结构转动时传送带6转动，并带动色温补偿片4移动以切入切出光路，进而实现色温补偿，这种驱动方式简单易实现，通过电机的正转与反转即可实现色温补偿片4切入切出光路，便于控制。
本实施例中，带传动结构还包括套设于传送带6两端内的主动轮及从动轮，所述电机驱动主动轮转动，具体地，电机的驱动转轴5与主动轮连接；所述色温补偿系统还包括辅助滑动装置，色温补偿片4与辅助滑动装置滑动连接。当传送带6带动色温补偿片4移动时，色温补偿片4在辅助滑动装置上滑动，这样能提高色温补偿片4移动的平稳性，进而保证色温补偿效果。
另外，所述色温补偿片4数量至少为一个。所述色温补偿片4数量为两个时，所述驱动机构9驱动色温补偿片4相向运动或相离运动以使两个色温补偿片4切入切出光路。这样设置相比于一个色温补偿片，便于提高色温补偿片的切入切出速度。本实施例中，色温补偿片4数量为两个。
其中，电机、带传动结构及两个色温补偿片4的连接方式主要有两种：第一种是所述电机及带传动结构均为一个，两个色温补偿片4分别设于传送带6的两侧边上，这样设置不但便于使两个色温补偿片4移动的速度相同，而且能简化驱动机构9，便于控制的同时节省成本；第二种是所述电机及带传动结构均为两个，两个色温补偿片4分别设于两个传送带6上。本实施例中，电机、带传动结构及两个色温补偿片4的连接方式使用第一种。
另外，所述两个色温补偿片4设有高度差，当两个色温补偿片4相向运动时能部分重叠。相比于两个色温补偿片4只能接触不能重叠的情况，部分重叠使得光路上任何位置的光都能被补偿色温，防止两个色温补偿片4平行接触时接触线位置处的光不能被补偿色温的情况出现，进而影响色温补偿效果。
其中，所述色温补偿片4使用同一色相作为基准颜色，通过基准颜色的明度变化对经过其的光进行色温的升高补偿或降低补偿。本实施例中，所述色温补偿片4通过使用蓝色的明度变化对经过其的光进行色温的升高补偿，或所述色温补偿片通过使用黄色的明度变化对经过其的光进行色温的降低补偿。当然，作为对色温的升高补偿选取的基准颜色不仅限于蓝色，作为对色温的降低补偿选取的基准颜色不仅限于黄色。
另外，所述色温补偿片4垂直于光轴。
其中，所述色温补偿片4的明度变化为均匀变化，用以简化所述色温补偿片4的设计与生产过程；驱动机构9能根据调光速度控制色温补偿片4切入切出光路时的移动速度。
本实施例还提供了一种舞台灯色温补偿方法，使用上述色温补偿系统，包括如下步骤：
S1.选择待补偿色温的舞台灯型号；
S2.使用该色温补偿系统之前，对舞台灯出光亮度与色温变化的关系用照度计进行测试，对所应用型号的舞台灯样机进行调光，并通过测试出光效果获得色温亮度变化曲线，如图4所示；可取一定的亮度数值为终止补偿点，本实例中取亮度3%作为终止补偿点，低于3%的部分不进行补偿，因此调光范围为100%-3%；
S3.根据色温亮度变化曲线，可得到色温补偿曲线，如图5所示，并判断舞台灯调光亮度降低过程中需要升高补偿，计算补偿色温最大值为2100K，本实施例中采用两个色温补偿片4进行色温补偿，依此设计两个色温补偿片4的色温补偿区域41的基准颜色为蓝色，明度变化总范围为色温升高2100K；
S4.根据舞台灯空间结构设计所述色温补偿片4在光路上的空间位置，并确定色温补偿片4的尺寸大小，根据色温补偿片4的尺寸、基准颜色及色彩明度变化范围设计单个色温补偿区域41上蓝色的明度为0-2100K均匀变化，并注意变化方向为由靠近光轴部分向远离光轴部分由浅及深，两个色温补偿片呈对称设计；
S5.根据色温补偿曲线确定不同亮度情况下需要的色温补偿值，根据色温补偿片4的色彩明度变化情况、尺寸及在光路上的空间位置确定不同亮度情况下色温补偿片4的位移数值，可作为控制驱动机构9移动距离的参考数据；
S6.将色温补偿片4安装到驱动机构9上，并装入所检测舞台灯当中，本发明根据图5所示色温补偿曲线控制驱动机构9移动，再根据出光效果调节色温补偿片4的位移数值，并记录调光片处于不同位置时色温补偿片4应移动的距离；S7.舞台灯启动后，所述驱动机构9根据不同亮度情况下色温补偿片4的位移数值控制两个色温补偿片4移动以切入切出光路，完成色温补偿的过程。
根据使用该色温补偿系统后舞台灯的出光效果，获得测试数据如表1所示，以及新的色温亮度变化曲线图如图6所示，从表1可以看出色温变化随亮度变化的范围可控制在300K以内。
其中，执行上述步骤S2时，通常调光范围为100%-0%，对于色温补偿过程，调光中低亮度部分在实际使用中意义不大，并且色温变化很大，所以可根据实际情况取一定的亮度数值为终止补偿点。
另外，执行上述步骤S3时，基准颜色不限定于蓝色，可采用其他冷色系色彩。
其中，执行上述步骤S3时，可适当增加补偿色温最大值，保留余量，避免舞台灯使用中色温补偿范围不足。
另外，执行上述步骤S4时，色温补偿片4沿光轴方向距离光源1及调光片的位置应尽可能靠近调光片，以减小色温补偿片4的尺寸。
其中，执行上述步骤S6时，由于色温补偿片4对亮度的影响，应在亮度标准范围内适当放松色温补偿值，以亮度达到标准为优先。
表1测试数据
Figure 81967dest_path_image001
 本发明的实施方式
实施例二
实施例二与实施例一的不同之处在于，色温补偿片4的明度变化不采用均匀变化，其明度变化根据光源1在不同亮度情况下需要的色温补偿值变化，为不均匀变化，驱动机构9根据调光速度控制色温补偿片4切入切出光路时的移动速度。
实施例二能实现驱动转轴5匀速转动控制两个色温补偿片4移动，控制过程中只需要控制色温补偿片4切入切出光路方向及位移数值。
实施例三
实施例三与实施例一的不同之处在于，所述光源1为LED光源，LED光源的调光装置3使用电子调光。

Claims (15)

  1. 一种舞台灯色温补偿系统，包括光源（1）与对光源（1）进行调光的调光装置（3），其特征在于，还包括用于对从调光装置（3）出来的光进行色温补偿的色温补偿片（4），及控制所述色温补偿片（4）移动的驱动机构（9）；所述色温补偿片（4）上的色彩明度变化不同，驱动机构（9）驱动色温补偿片（4）切入切出光路以实现色温补偿。
  2. 根据权利要求1所述的一种舞台灯色温补偿系统，其特征在于，所述驱动机构（9）包括电机及由电机驱动的带传动结构，色温补偿片（4）设于带传动结构的传送带（6）上。
  3. 根据权利要求2所述的一种舞台灯色温补偿系统，其特征在于，带传动结构还包括套设于传送带（6）两端内的主动轮及从动轮，所述电机驱动主动轮转动；所述色温补偿系统还包括辅助滑动装置，色温补偿片（4）与辅助滑动装置滑动连接。
  4. 根据权利要求2所述的一种舞台灯色温补偿系统，其特征在于，所述色温补偿片（4）数量至少为一个。
  5. 根据权利要求4所述的一种舞台灯色温补偿系统，其特征在于，所述色温补偿片（4）数量为两个时，所述驱动机构（9）驱动色温补偿片（4）相向运动或相离运动以使两个色温补偿片（4）切入切出光路。
  6. 根据权利要求5所述的一种舞台灯色温补偿系统，其特征在于， 所述电机及带传动结构均为一个，两个色温补偿片（4）分别设于传送带（6）的两侧边上；或所述电机及带传动结构均为两个，两个色温补偿片（4）分别设于两个传送带（6）上。
  7. 根据权利要求5所述的一种舞台灯色温补偿系统，其特征在于，所述两个色温补偿片（4）设有高度差，当两个色温补偿片（4）相向运动时能部分重叠。
  8. 根据权利要求1所述的一种舞台灯色温补偿系统，其特征在于，所述色温补偿片（4）使用同一色相作为基准颜色，通过基准颜色的明度变化对经过其的光进行色温的升高补偿或降低补偿。
  9. 根据权利要求8所述的一种舞台灯色温补偿系统，其特征在于，所述色温补偿片（4）通过使用蓝色的明度变化对经过其的光进行色温的升高补偿，或所述色温补偿片通过使用黄色的明度变化对经过其的光进行色温的降低补偿。
  10. 根据权利要求8所述的一种舞台灯色温补偿系统，其特征在于，所述色温补偿片（4）垂直于光轴。
  11. 根据权利要求8所述的一种舞台灯色温补偿系统，其特征在于，所述色温补偿片（4）的明度变化为均匀变化；或所述色温补偿片（4）的明度变化根据光源（1）在不同亮度情况下需要的色温补偿值变化；驱动机构（9）能根据调光速度控制色温补偿片（4）切入切出光路时的移动速度。
  12. 根据权利要求1所述的一种舞台灯色温补偿系统，其特征在于，所述光源（1）为传统光源，传统光源的调光装置（3）为调光片，调光片位于色温补偿片（4）与光源（1）之间，调光片通过切入切出光路对经过其的光进行遮挡调光；或所述光源（1）为LED光源，LED光源的调光装置（3）使用电子调光。
  13. 根据权利要求12所述的一种舞台灯色温补偿系统，其特征在于，当光源（1）为传统光源时，调光片与色温补偿片（4）设于同一个驱动机构（9）上；色温补偿片（4）切入光路的位移小于调光片切入光路的位移，所述位移为相对光轴进出光路的距离。
  14. 根据权利要求1所述的一种舞台灯色温补偿系统，其特征在于，还包括反光杯（2），所述色温补偿片（4）位于光源（1）第一次聚焦的焦点与反光杯（2）之间的位置。
  15. 一种舞台灯色温补偿方法，其特征在于，使用权利要求1所述的色温补偿系统，包括如下步骤：
    S1.选择待补偿色温的舞台灯型号；
    S2.测试所述舞台灯调光过程中出光亮度变化情况，并根据出光亮度情况测试色温变化的相应情况，记录色温偏离标准色温的最大值，即色温补偿最大值；
    S3.根据所述色温变化与所述出光亮度变化的关系以及所述色温补偿最大值设计色温补偿片（4）的色彩明度变化范围，根据需要的色温升高补偿或降低补偿选择基准颜色；
    S4.根据舞台灯空间结构设计所述色温补偿片（4）在光路上的空间位置，并确定色温补偿片（4）的尺寸大小，根据所述色温补偿片（4）的尺寸、数量、色彩明度变化范围及基准颜色设计所述色温补偿片上（4）色彩的明度变化；
    S5.根据所述色温变化与所述出光亮度变化的关系确定不同亮度情况下需要的色温补偿值，根据所述色温补偿片（4）的色彩明度变化情况、尺寸及色温补偿片（4）在光路上的空间位置确定不同亮度情况下色温补偿片（4）切入切出光路的位移数值；
    S6.所述驱动机构（9）根据不同亮度情况下色温补偿片（4）的位移数值控制色温补偿片（4）移动。
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