US Patent 10302745 Method and device for triangulation-based distance measurement

Some embodiments of the invention include a method for determining distances to an object to be measured based on the principle of triangulation, comprising generating and emitting a measuring light beam, directing the measuring light beam to the object to be measured, detecting a reflection of the measuring light from the object with respective pixels of an image sensor during a defined detection sequence (t0-te) and deriving distance information based on the detected reflection. The detection sequence (t0-te) comprises a number of at least two exposure sub-sequences each defining a particular exposure period and saturation limit for the pixels of the sensor, wherein a successive exposure sub-sequence comprises a higher saturation limit than its prior exposure sub-sequence and each saturation limit defines a maximum charging level of the pixels for the respective exposure sub-sequence.