Light receiving element and ranging module having light receiving regions and an isolation portion between adjacent light receiving regions

A ranging module, comprising:

• a light receiving element;
• a light source that radiates irradiation light whose brightness varies periodically;
• and
• a light emission control part that controls an irradiation timing of the irradiation light, wherein
• the light receiving element includes:
• light receiving regions each including:
• a first voltage application unit to which a first voltage is applied;
• a first charge detection unit provided around the first voltage application unit;
• a second voltage application unit to which a second voltage different from the first voltage is applied;
• and
• a second charge detection unit provided around the second voltage application unit;
• and
• an isolation portion that is arranged at a boundary between the light receiving regions adjacent to each other, and wherein the isolation portion isolates the light receiving regions from each other.