agenda
different kinds of lighting
indoor lighting
studio lighting
film lighting
architecture lighting
theater lighting
stage lighting
golden rules of stage lighting
safety first
fixture location is the key
to hide not to show
golden rules
light sources
in which ways can we produce light?
what are the pros and cons?
incandescent 白炽灯
a wire filament heated to such a high temperature that it glows with visible light
efficiency low
heat high
cooling no
color 2700k-3500k
life 2000 hrs
power AC
dimmable yes
halogen 卤素灯
an incandescent lamp consisting of a tungsten filament sealed into a compact transparent envelope that is filled with a mixture of an inert gas and a small amount of a halogen
efficiency low
heat high
cooling no
color 2700k-3500k
life 3600 hrs
power AC
dimmable yes
Fluorescent 荧光灯
a slow pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light
efficiency high
heat low
cooling no
color 2700k-6500k
life 5000 hrs
power ballast 镇流器
warm up long
dimmable no
discharge 放电灯
a high-intensity discharge hid lamp is a type of electrical lamp which produces light by means of an electric arc between tungsten electrodes housed inside a translucent or transparent fused quartz of fused alumina arc tube
efficiency high
heat low
cooling yes
color 6500k-8000k
life 4000 hrs
power ballast 镇流器
warm up long
dimmable no
color temperature
the color temperature of a light source is the temperature of an ideal black-body radiator that radiates light of a color comparable to that of the light source
sources-LED 发光二极管
a light-emitting diode LED is a two-lead semiconductor light source
efficiency high
heat low
cooling yes
color mixing
life 50000 hrs
power DC
warm up short
dimmable yes
sources-Laser 激光
a laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation
fixture specification
wattage
beam angle / field angle 25 degree
beam type beam spot wash
color temperature kelvin
color mixing RGB CMY
fixture positions
front light 面光
to show the face not to create atmosphere
vertical angle 45 degree to 60 degree
use only white color
dont keep changing the brightness
back light 背光
a light source behind the actor helps to give depth to the stage by separating the action from the scenery
vertical angle 0 degree to 60 degree
strong colors can be used to create atmosphere
can also be used to spread beams into audience in order to extend the stage
down light 顶光
color wash
eliminate shadows
side light 侧光
hightlight the contour of the figure
can only have one side