Light detection device and light detection system

A light detection system comprising:

• a projection device that projects a projection pattern determined in advance in a measurement range via a projection optical system;
• an imaging device that captures the measurement range in which the projection pattern is projected via an imaging optical system;
• and
• a processing device that generates three-dimensional distance data for the measurement range on the basis of captured image data captured by the imaging device, wherein
• the processing device includes a distortion correction unit that corrects distortion of a two-dimensional coordinate based on the captured image data.

A light detection system comprising:

• a projection device that projects a projection pattern determined in advance in a measurement range via a projection optical system;
• a first imaging device that captures the measurement range in which the projection pattern is projected via a first imaging optical system;
• and
• a second imaging device that captures the measurement range in which the projection pattern is projected via a second imaging optical system, wherein:
• the second imaging device includes a signal processing unit that generates three-dimensional distance data for the measurement range on the basis of first captured image data captured by the first imaging device and second captured image data captured by the second imaging device;
• and
• the signal processing unit includes a distortion correction unit that corrects distortion of a two-dimensional coordinate of the first captured image data and a two-dimensional coordinate of the second captured image data.