Development of stage and studio ellipsoidal light in China

Stage and studio ellipsoidal lights came out in China in the early 1980s. Many insightful people in Beijing's stage lighting industry actively introduced advanced foreign technology. They have successively developed the first generation of stage profile lights in various models in China. The branch of Beijing Electron Tube Factory draws on the technology of American Berkey Colortran Company, and the new product developed is the most successful. It has high technical content, high processing accuracy and excellent optical quality. At the end of the 1990s, a company in Hangzhou referred to the products of ETC in the United States and created a new stage ellipsoidal light. It is said to have been well received after listing, and the prospects are promising.

The stage profile light is a local name in China. It is indeed easy to understand. In fact, she has several foreign names on the head, such as "profile spotlight", "zoom profile spotlight", "ellipsoidal spotlight", “leko spotlight”etc.. There are several versions in the lighting industry, using different names, which are respectively translated into "contour spotlights", "variable beam modeling spotlights" and "ellipsoidal spotlights" (a kind of stage imaging lights, because the condenser system uses elliptical mirrors), the rich information is also transmitted from many names: this kind of lighting fixture belongs to the spotlight series, it has a strong spot power, and at the same time is not a spotlight in the general sense, it can light paint and enlarge "Clone" the lines, contours and patterns on the modeling board. In addition, it can change the solid angle of the projected beam to produce variable light spots and projections, and modeling lighting effects. The various naming of the stage ellipsoidal light has fully demonstrated to us that it is a novel multifunctional spotlight.

1) Deep ellipsoidal reflector concentrating system, American berkey company, ETC company, UK Rank company and other products all adopt this condensing mode. Some companies directly call it "ellipsoidal spotlight". The luminous body of light is adjusted to the focus of the ellipsoidal reflector and its vicinity. In the reflector, this condensing system has a large tolerance angle to the light source, and can obtain a high light energy utilization rate of the light source. It is a novel, high-efficiency concentrating mode.

2) Condensing system mode of spherical mirror + aspheric lens. German ADB products use this condensing mode. There is an aspheric lens in front of the light source and a spherical mirror at the back, and it is very close to the aspheric lens. The two optical devices are paired The clamping configuration of the light source can also form a large containment angle and achieve a high concentration effect.