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        Theater stage lighting configuration
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        The stage in the theater has a variety of stages, such as a regular framed 
        stage, an extended stage, an island stage, and a stage called a black box. 
        Because the stage forms are different, the configuration requirements of the 
        stage lamps are not the same. . For the sake of convenience, I take the 
        ordinary framed stage as an example. This kind of stage is more in the past 
        or in the current reconstruction and new theater. Therefore, it is extremely 
        necessary and necessary to talk about the lighting configuration of this 
        stage.
        The stage (which refers to the framed stage, the latter is the same) will 
        have different lighting requirements due to the different plays. Therefore, 
        we must be clear about what kind of repertoires to perform on this stage 
        before using the lamps, so that the lamps and lanterns will have clear goals 
        and intentions. If the stage is located in the traditional opera and ballet, 
        the configuration of the lamps must be configured according to the 
        requirements of opera and ballet. For example, in the case of large-scale 
        songs and dances, chowders and other special programs, in addition to the 
        basic requirements for configuring beam lights and pattern lights, special 
        lamp positions and lamp configurations should be added according to specific 
        program requirements, which is difficult to clarify here. Therefore, I only 
        talk about the configuration of the basic lamps on the theater stage. 
        According to this configuration, it can meet the requirements of local 
        dramas such as opera, dance, ballet, drama, and Beijing opera.
        ?Before configuring the luminaires, you should first understand the types of 
        luminaires and their main functions and uses. I will briefly introduce the 
        performance of some luminaires here for the luminaire configuration.
        1. Spotlights - Spotlights used on the stage refer to the use of flat 
        convex condensers in front of the lamps. Compared with 230W beam lamps, the 
        lamps can adjust the spot size. The beam beams are concentrated, and the 
        diffused light is smaller. There are a variety of 0.5W to 5KW, the focal 
        length is long, medium and short, and the distance of the range of sight is 
        selected according to the needs.
        2. A rib lamp - or a soft light, but in the television world, the lamp is 
        called a spotlight. In order to distinguish the above-mentioned flat convex 
        concentrating or beam lamp on the stage, the threaded lamp is scattered and 
        soft, so the diffusing area is large, and sometimes the light is scattered 
        in front of the mirror in order to control the diffused light, which is 
        characterized by light. The area is large, not like the spotlight or the 
        beam lamp has obvious spot feeling, the shooting distance is relatively 
        close, and the power is 1KW, 2KW and so on.
        3. Backlights - There is no lens in front of this kind of lamp, and the 
        light is completely emitted by the larger mirror behind it. With the same 
        2KW bulb, the brightness is brighter than the concentrated light, so it 
        should be used when the stage is to show strong light source and brightness. 
        The effect is better than other lamps, characterized by strong beam, but pay 
        attention to the focus point when dimming, it is not appropriate to adjust 
        the focus point on the color paper or the screen, which is easy to cause 
        burning, and the center often appears black in the dimming In order to avoid 
        the black heart, an annular baffle is added at the center of the front end 
        of the lamp, and the spot light emitted is large and not easy to gather. Now 
        a new type of coating on the reflective bowl to make the outer line of the 
        line backwards to reduce the temperature in front of the lamp, the effect is 
        very good, the name is the cold light super spotlight, the actual structure 
        of the lamp is the same as the back light.
        4. Imaging lights - or shaped lights, ellipsoid spotlights. There are a 
        variety of beam angles that can be selected according to the needs. The main 
        characteristics are such as slides that can cut the spot into square, 
        diamond, triangle and other shapes, or project various patterns and 
        patterns, and the power is also 1KW, 2KW, etc. Optional configuration.
        5. Simple lamp - also known as PAR lamp, or beam lamp, its structure is to 
        install a mirror bulb in the cylinder and also use a reflective bowl to 
        install bromine tungsten bubble. The main characteristic is to shoot a 
        relatively fixed beam, the beam angle is wide and narrow, and the spot is 
        light. The size cannot be adjusted.
        6. Daylighting lamp - a high-power astigmatism lamp used to illuminate the 
        skylight from top to bottom, requiring a bright and balanced light with a 
        large illumination area.
        7. Floor lamp - a high-power astigmatism lamp, used to place on the stage 
        surface, the lower part of the skylight is illuminated upwards, and is 
        connected to the light of the daylight lamp, evenly above and below.
        8. Astigmatic strip light - long strips, divided into multiple grids, 
        generally can be divided into three or four colors, each with an 
        incandescent bulb power of about 200W, requiring a variety of colors to 
        self-align, for large-area illumination screen or screen use It can also be 
        used as a large-area balanced lighting. Various colors of light can also be 
        used at the same time to bring out different colored beams.
        9. General astigmatism lamps, such as iodine-tungsten lamps and ordinary 
        floodlights, are used to evenly illuminate an area, or some set of scenes.

        The lamps introduced above are the basic lamps used in the general stage, 
        but other types of lamps should be arranged depending on the form of the 
        performance.

        For example, in addition to the basic lamps, the song and dance party 
        uses a large number of downlights, computer lights, hose lights, lights, 
        various effects lamps, and even smokers, dry ice machines, strobe lights, 
        lasers and projection slides, and supporting use. For post-projection, to 
        reduce the source of spots, special seamless plastic screens, etc., here are 
        not examples.
        The stage lighting configuration is divided into two parts: the mouth and 
        the mouth.
        First, the surface of the station is generally divided into light, slap, box 
        (stairs), long-distance chasing room.
        1. According to the scale of the theater stage, there is a surface light, 
        two light, and even three light. The configuration of the surface light 
        should be based on the distance between the distance and the spotlight, and 
        the spotlights and imaging lights with different set distances should be 
        above 2KW. The first surface light is closer to the mouth of the station, 
        and some 2KW rib lights and back lights can be added. A face light and two 
        side lights should be equipped with a suitable focal length in the left, 
        middle and right positions. The power-matching light-receiving lamps can be 
        individually controlled by the chasing personnel to control their brightness 
        and color change.
        2. The slaps are symmetrically arranged on the left and right sides of 
        the platform. According to the scale of the theater stage, one or two slaps 
        can be set on each side. The luminaires are mainly equipped with spotlights. 
        The imaging lights and rib lights can be arranged in a small amount, because 
        the slaps rely on the side walls of the audience hall. Very close, when 
        using ribbed lights, diffused light often brightens the walls nearby, 
        affecting the atmosphere of some scenes, so it should be used less. A set of 
        follow-up lights should be set in each of the left and right slaps for the 
        chasing personnel to control.
        3. The foot light is generally on the side of the music pool outside the 
        mouth of the station. The foot is light, the built-in four-color astigmatism 
        strip light, and the color separation control, the length is slightly 
        smaller than the width of the table.
        4. The long-distance chasing room is generally set up on the left and 
        right sides of the auditorium. The gas discharge lamp such as a xenon lamp 
        is arranged inside. All the controls are operated by the chasing light. If 
        no special chasing room can be set, it is often on the left and right sides 
        of the building. The rear area is equipped with a follow-up light.

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