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What is a reflector?

• A surface for reflecting light

• A device for controlling sound

• A material for dispersing heat

• A tool for emitting light

What is the purpose of a lens in luminaires?

• To generate heat

• To block light

• To focus light

• To absorb light

What is a Fresnel lens known for?

• Blocking light completely

• Absorbing heat

• Dispersing light in all directions

• Concentrating light from a small source

What is the function of a louver?

• Absorbing sound waves

• Focusing light

• Controlling the radiation from a light source

• Reflecting heat

What does the term 'collimate' mean?

• To make rays of light parallel

• To disperse light in all directions

• To absorb light completely

• To redirect light upwards