Stage lighting can be divided into three categories according to the optical structure: floodlights, spotlights and slide lanterns; according to the parts installed on the stage, there are surface lights, ear lights, foot lights, column lights, top row lights and sky row lights. Light, ground light and flowing light.
1. Floodlight system refers to a lamp that can emit uniform and soft light and can illuminate light in a certain direction. Individual floodlights, overhead lights, footlights and curtain lights are generally used to illuminate canopies, painting sets or performance areas.
2. Condensing system
Lamps that can emit directional light and control the range of the light area. Generally, the principle of refraction is used to project different light spots through the lens. If you use a threaded soft light lens, you can produce a light spot with soft edges. A lamp that uses a reflective optical structure to achieve a spotlight effect is called a backlight.
3. Slide system
Add a set of objective lenses in front of the spotlight to project light into the image. This kind of slide show can be divided into: ① projection slide show that uses slide imaging; ② projection slide show that projects moving images such as clouds, water, and fire on the scenery through a rotating disc chain; ③ uses long focal length objective lenses Make small light spots clearly imaged. Follow-up lights that highlight the protagonist's image; ④ Elliptical concave mirror lamps called modeling lights.
Extended information
1. Commonly used lamps
Spotlight, soft light, return light, diffuse light, modeling light, footlight (also known as strip light) ), light column lights (also known as downlights), projection slides (also known as projection slides) and canopy effect lights, computer lights, follow-up lights, etc.
2. Stage lighting design basis
"Acoustic Characteristics Index of Hall Sound Reinforcement System" GYJ25-86; "Measurement Method of Hall Sound Reinforcement Characteristics" GB/T4959-1995; "Acoustic System "Preferred patching value for equipment interconnection" GB14197-93; "RASTI method for objective evaluation of language intelligibility in halls" GB/T14476-93; "Code for measurement of hall reverberation time" GBJ76-84; "Code for design of electrical appliances in civil buildings" 》JGJ/T16-92.
Reference: Baidu Encyclopedia-Stage Lighting