What is the specific name of an illuminated area?

Question

Example: When a street light shines on street, the area illuminated has a specific name. Can't remember for the life of me. Can you help?

Answer 1

for a specific street light, the lamp has a wattage input and lumens lighting output. when it shines down on an area, the light is either called LUX or FOOTCANDLE

LUX = lumens / square meter

FOOTCANDLE = lumens / sqft

example you need 30 ft.cd of lighting to read printed novel under the traffic light

Answer 2

the illuminated area

the lit area

.

Answer 3

Bright spot