Contents

UnitIlluminance

A unit of measure for illuminance.

Declaration

class UnitIlluminance

Overview

You typically use instances of UnitIlluminance to represent specific quantities of illuminance using the NSMeasurement class.

Illuminance

Illuminance is the luminous flux incident on a surface. The SI unit for illuminance is the lux (lx), which is derived as one lumen per square meter (1lm / 1m2).

The UnitIlluminance class defines its baseUnit() as lux.

Name

Method

Symbol

Lux

Lux

lx

Topics

Accessing the Base Unit

Accesing Predefined Units

See Also

Energy, Heat, and Light