News

Lamps used for lighting in art galleries and museums

Floodlights are simple floodlights commonly used on stage and in studio. They do not have more complex optical controls, only a Reflector made of polished metal or silver-coated glass, and can control the light without a sunshade. Under normal circumstances, this type of lamp only needs a frame to install a color filter, and the commonly used bulbs are 150 watts, 200 watts and 1000 watts.

There are more than 50 colors of color filters, each with its name and number for easy selection. The sheet is made of dyed plastic. Because plastic has the disadvantages of fading, whitening and curling under the combined influence of light and heat, tinted glass can also be used instead if necessary.

Floodlights sometimes need to be arranged in long strips to form sky and ground rows of lights, and generally several alternative lamps with 3 to 4 color control light are installed on another separate circuit. Floodlights have increasingly commonly used aluminum-plated parabolic Reflector bulbs (PAR), which can be used alone or in combination.

Contour spotlight This type of light is the most widely used and most versatile in theaters (see Figure 27-1B). Its controllable light beam can produce a clearly defined spot of any shape. The light box is equipped with a variable aperture, which can adjust the diameter of the spot at will, and is equipped with a metal front cover to make the light beam form an irregular or special shape. The rated power of the commonly used bulbs is 250 watts to 2000 watts, and the beam angle is between 20° and 30°. The light box is equipped with a tungsten filament bulb with dense filaments. The light beam is focused by an elliptical Reflector and shines on the objective lens through the aperture. The size and shape of the aperture can be controlled by the insert light gate or the front cover, and the focus can be adjusted by moving the objective lens.

PREVIOUS：Light sources for stage and TV studios NEXT：Control equipment for stage and television st