sdk/0.2.2/illuminance_8hpp.html

# Single photometric illuminance measurement.  Light should be assumed to be

# measured along the sensor's x-axis (the area of detection is the y-z plane).

# The illuminance should have a 0 or positive value and be received with

# the sensor's +X axis pointing toward the light source.

#

# Photometric illuminance is the measure of the human eye's sensitivity of the

# intensity of light encountering or passing through a surface.

#

# All other Photometric and Radiometric measurements should not use this message.

# This message cannot represent:

#  - Luminous intensity (candela/light source output)

#  - Luminance (nits/light output per area)

#  - Irradiance (watt/area), etc.


std_msgs/Header header # timestamp is the time the illuminance was measured

                             # frame_id is the location and direction of the reading


float64 illuminance          # Measurement of the Photometric Illuminance in Lux.


float64 variance             # 0 is interpreted as variance unknown
Classes
class	sensor_msgs::msg::Illuminance
	ROS message class definition for Illuminance. More...
Namespaces
namespace	sensor_msgs
	The sensor_msgs package contains ROS2 interface definitions.

namespace	sensor_msgs::msg
	message definitions of the sensor_msgs package