Talk about the characteristics and type of stage and television lights
 
 

Talk about the characteristics and type of stage and television lights
audio and stage lighting

    Stage film and television lamps (luminaire for stage)

    A class of lamps, lighting and reach some kind of lighting effects used in stage performances and film shooting. It helps the performance of programs, reflecting the author's creative intent, and express the artistic atmosphere and the audience, photography (as) machine to get the correct color perception and exposure. Other lamps, such lamps mostly have to change the beam diffusion angle and degree of soft light and color features, and is equipped with a special agency of the focus, aperture, color filter frame.

    A Brief History

    Stage light earliest movie lights, followed by television lights later. The early performances with the illumination of natural light torches, oil lamps, candles and other sources. The 17th century frame stage, stage lights developed by controllable light source to be able to control the intensity of light and color, simple lamps. In 1804, there has been the incandescent light to the combustion of acetylene gas heating quicklime and lamps for stage lighting. The 19th century, the stage lights has gas lights, kerosene lamps and electric light, the light fixture, spotlights, astigmatism lights (floodlights), and centralized control of scattered inside and outside of the stage lighting, stage lighting gradually entering the field of art lighting . 1960s, the stage lights tend to the series, systematic, automation, lighting the way with a full range of computer control, and extensive use of laser and voice effects.

    Early movie lights to incandescent lamps, carbon arc lamps and high-pressure mercury lamp as the light source for shooting black and white. The 1960s began using halogen lamps, a color temperature of 3200K and color rendering index of 99 to ensure that the color film color reproduction. Early 1970s, the Chinese invented the DC dysprosium holmium light, color temperature of 5500K and color rendering index of 80 or more, and has the advantages of exchange strobe to ensure a daylight color film color reproduction and interior outdoor photo.

    TV lights 1950s, developed on the basis of stage, film lights. More and more high-sensitivity camera tube, the TV lights power reduced accordingly. Especially the rapid development of small studio with closed-circuit television, the special requirements of television lights, there has been the lever control lights, electric lights.

    Composition

    Stage film and television lights from the light source, optical components, mechanical parts and electrical parts. light. Incandescent, halogen and metal halide lamps and other. Their luminescence takes the shape of the point, strip or rectangular geometry, color temperature 3200K, 5500K are two kinds of color rendering index of 80 or more. optical components. Requirements, according to the shape of the light emitter and light cloth, imaging effects by the reflector, the field lens (condenser), objective, etc. constitute the optical system. mechanical components. Envelope and block light, heat, insulation and other role, and can guarantee the stability of the optical system is reliable and play a variety of functions, including zoom in and received a small angle of the light beam, focusing on the common objective lens or zoom lens, the effect motor-mechanical transmission. electrical components. Including power supply, light source accessories (triggers, ballast, rheostat, etc.), the dimmer and the effect of the continuously variable drive motor control electrical wiring and so on.

    Feature

    Stage lights to help the audience to directly see all the scenarios or part of the scene on the stage, backdrops and stage look realistic, the better the creative intent of the demonstration of the writers and works of artistic standards, the range of dark and light changes, lighting The area is also large. Use of television lights in the studio, studio or field scene, the "audience" is removable and can be for technical processing or video cameras, and more close-range lighting lighting in addition to the artistic effect outside there to make the correct exposure of the camera tube or film , especially for color reproduction, in the light (shoot interior) for the light color temperature is 3200K, the color rendering index of 90 or more sunlight (on location) of 5500K and 80 above.

    Type

    Stage film and television lights according to the characteristics of the emitted beam is divided into three types of spotlights, astigmatism lights and effects lights.

    Spotlight

    To get the lighting of the local projection optical effect. Adjustable beam angle, the light is more concentrated, spot the edge of a filter frame. According to the clarity of the contour of the spot edge can be divided into the following three kinds. Soft spotlight. Light, soft contours, commonly used Fresnel lens, also known as the Fresnel lens spotlight. plano-convex lens spotlight. Clearer outline of the light, strength, and the widespread use of a lamp on stage. spotlights. Using the principle of imaging, so that the projected beam of light in the dark boundary, a significant spot on the stage, used to track the local scale of the performers or projection lighting.

    Astigmatism lights

    Beam diffusion angle, the soft spot and uniform edge of the traces of a class of lamps. It uses a reflector, and filter frame. There are many varieties of grid lights, foot lights, canopy astigmatism lights, day tablets, astigmatism lights, the four and six associated astigmatism lights, location astigmatism lights, etc..

    Effect of light

    Use a combination of lighting, mechanical drive and electrical control, projected a variety of scenery, nature changes in the weather and the unreal scene of a stage film and television lights. Able to demonstrate a variety of changes in static scenes and activities, scenery rain, snow, flames, clouds, waves, lightning, the sun rises, etc., can also use the shadow of the dynamic background of the performance of a variety of landscapes, mining.