As one of the carrier of artistic expression, television lighting time is not long, but the development speed is amazing. Especially in recent years, LED and other large number of new technology applications for the lighting industry to provide a good hardware protection, while improving the TV lights in the screen visual expression. In this context, high color temperature light source by constant technological innovation, but also more into the TV light workers line of sight. In todays studio, low-color light source is still the main force of the lamp, but with the high color temperature light source of the technical indicators to enhance the latters advantage will gradually appear. The following mainly from four aspects of high color temperature light source technology and its application of the wide range of advantages.
1 for the complex and complex external environment
In recent years, the studio design ideas in constant innovation, from the closed studio gradually transformed into an open studio, from the studio to the outdoor studio, the rational application of high color temperature light source can cope with complex external environment.
To Shanghai radio and television lobby studio as an example, the studio shown in Figure 3. The studio is an open transparent studio, that is, not only has the studio area, the guide area, the work environment area integration of the open studio properties, and the existence of the glass for the partition, sunlight and other transparent studio properties, studio outside The environment is very complicated. Therefore, the designer should not only solve the studio area and work area color temperature consistency of the problem, but also consider the daytime daylight exposure problem. The daylights color temperature is usually 5 600 K, in order to ensure that the impact of sunlight, the studio uses a high color temperature light source for light. The use of high color temperature three primary color cold light as the surface light, and in the first introduction of the high color temperature LED spotlight as backlight and side light, but also the use of high color temperature spotlight and imaging lights as the work area of ambient lighting, and ultimately a perfect solution to the sun exposure and work area Environmental lighting consistency and other issues, making the screen color natural reduction.
Figure 3 Shanghai radio and television lobby lobby
2 for the rapid development of technological innovation
In addition to changes in the studio properties, advanced technology and equipment also changed the lighting division of the light source choice. LED large screen, LCD screen, projection equipment and a large number of high color temperature light source equipment involved, so that the studio elements more abundant, but also for the development of high color temperature light source provides a new opportunity. The reason is that if the operation of the use of low-temperature light source for light, then the high color temperature light source equipment can not be properly restored; if the use of high color temperature light source, large screen and other equipment, the image color can be properly restored.
Shanghai Broadcasting Station Oriental TV open studio is a good example, the studio shown in Figure 4. The studio introduced a number of new elements during the 2011 transformation, including the DLP screen and the PDP screen as the background. Taking into account the addition of these new high-color light source equipment, lighting designers finally choose a high color temperature light source of the studio cloth. In this transformation, all light sources are used high color temperature LED light source, the use of LED flat panel light as the basis of light, LED spotlight as backlight and side light. Through the transformation, greatly enhance the overall visual image of the screen. At the same time, Oriental TV as a high-definition channel has entered the era of high-definition, the success of its studio is undoubtedly high-color light source for high-definition television applications in the establishment of a successful example.
Figure 4 Oriental TV open studio
3 rich light changes, enhance the stage effect
LED high color temperature light into the news studio at the same time, to computer lights as the representative of the stage high color temperature light source also entered the variety of studio. The function of the computer lights is increasingly strong, including the location of light, changes in light and shade, pattern and color changes, as well as prism, zoom, splash screen and other special effects change. In terms of attributes, in addition to high color temperature (most of the computer lights for the high color temperature, about 6 000 K or even higher), but also has a good color, high brightness, light quality modeling effect, good beam forming effect. Therefore, the use of computer lights to the variety of studio, often to the stage picture to bring richer changes in light and shadow, more brilliant stage effects and more shocking audio-visual impact. It can be said that the high color temperature light source, such as computer lights, not only enhances the stage effect of TV art, but also meets the increasing aesthetic needs of people.
4 to enhance the color saturation, highlight the screen level
From the spectral energy analysis curve is not difficult to find, high color temperature light source has a better color saturation, the screen more layered, this feature in the virtual studio to be reflected in the application.
Shanghai TV S5 virtual studio in December 2011 was rebuilt, the transformation of the Shanghai TV station for the first time try high color temperature light source on the virtual studio lighting. S5 Virtual Studio See Figure 5. Designed to use the center of the studio hanging 3 m in diameter circular high-temperature temperature light box, to give virtual studio uniform lighting, combined with virtual layout method to high color temperature flat light for the surface light, high color temperature LED spotlight Backlight, the final effect is very satisfactory. After comparison found that the use of high color temperature lighting makes the virtual keying picture more translucent, with the virtual scene highlights the overall sense of the screen layer.
Figure 5 Shanghai TV station S5 virtual studio