Omron B5L User Manual page 24

Precautions on TOF sensor principles
This product measures the distance by emitting light and calculating based on the phase
difference between the emitted and reflected light.
Also, the measurement requires time to accumulate the light received.
As a consequence precise measurement may not be available under the following
conditions.
- Highly reflective objects (e.g. mirror and shiny object), low reflective objects (e.g. black
object), objects that allow light to pass through (e.g. glass and plastics with high
transmission)
- A measurement target is in (speed of light/source modulation frequency)/2 (= approx.
12.5m) or farther away from the product (measured as closer)
- Presence of an obstacle other than the object to measure
- When this product or an object to measure is moving or vibrating
Impact of ambient light
This product emits 940nm infrared light.
If the main body or measurement target is exposed to strong ambient light of the same
wavelength band, the distance to the target cannot be measured accurately due to the
effect of the ambient light.
Impact of cover
Before installing a cover, you must take into account the followings.
- Separately install a cover so that the emitted light should not be reflected by the inside
surface of the cover and enter the receiver.
- Take into account the transmittance of the 940 nm wavelength for the cover material.
- To reduce the effect of reflection on the cover surface, apply AR coating.
Impact of heat
This product is equipped with an internal temperature sensor to stop measurement for
safety reasons when the temperature exceeds a certain level.
To cover this product, you must take into account sufficient heat dissipation.
To use multiple products at the same time
If you use two or more units of this product simultaneously, configure unique LED
emission frequency ID for each unit.
Refer to "4-13 LED Emission Frequency ID Setting (8EHex)" for details.
By default, the LED emission frequency ID is 8.
3D TOF Sensor Module B5L User's Manual (No. E596)
Measurement target
Measurement target
Chapter 2 Installation & Wiring
This product
Measurement target
2-1 Installation
This product
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