Photo detector, photo detection system, lidar device and vehicle

A photo detector comprising:

• a plurality of photo detection elements;
• and
• a plurality of trenches each provided among a plurality of the photo detection elements;
• the trenches surrounding at least the two photo detection elements.

A photo detection system comprising:

• a photo detector;
• and
• a distance measuring circuit to calculate a light flight time from an output signal of the photo detector;
• the photo detector including
• a plurality of photo detection elements,
• a plurality of trenches each provided among a plurality of the photo detection elements, and
• a wiring provided between the two photo detection elements out of the plurality of photo detection elements to electrically connect to the two photo detection elements,
• the trenches surrounding the 2·m (m is a positive integer) photo detection elements including the two photo detection elements, and
• the two photo detection elements being lined in a direction orthogonal to an extending direction of the metal layer for electrical connection.

A lidar device comprising:

• a light source to irradiate an object with light;
• and
• a photo detection system to detect the light reflected from the object;
• the photo detection system including
• a photo detector to detect the light reflected from the object, and
• a distance measuring circuit to calculate a light flight time from an output signal of the photo detector;
• the photo detector including
• a plurality of photo detection elements,
• a plurality of trenches each provided among a plurality of the photo detection elements, and
• a wiring provided between the two photo detection elements out of the plurality of photo detection elements to electrically connect to the two photo detection elements,
• the trenches surrounding the 2·m (m is a positive integer) photo detection elements including the two photo detection elements, and
• the two photo detection elements being lined in a direction orthogonal to an extending direction of the metal layer for electrical connection.

A vehicle comprising:

• four lidar devices at respective four corners of a vehicle body;
• the lidar device including
• a light source to irradiate an object with light, and
• a photo detection system to detect the light reflected from the object;
• the photo detection system including
• a photo detector to detect the light reflected from the object, and
• a distance measuring circuit to calculate a light flight time from an output signal of the photo detector;
• the photo detector including
• a plurality of photo detection elements,
• a plurality of trenches each provided among a plurality of the photo detection elements, and
• a wiring provided between the two photo detection elements out of the plurality of photo detection elements to electrically connect to the two photo detection elements,
• the trenches surrounding the 2·m (m is a positive integer) photo detection elements including the two photo detection elements, and
• the two photo detection elements being lined in a direction orthogonal to an extending direction of the metal layer for electrical connection.

A photo detection system comprising:

• a photo detector;
• and
• a distance measuring circuit to calculate a light flight time from an output signal of the photo detector;
• the photo detector including
• a plurality of photo detection elements, and
• a plurality of trenches each provided among a plurality of the photo detection elements,
• the trenches surrounding at least the two photo detection elements.

A lidar device comprising:

• a light source to irradiate an object with light;
• and
• a photo detection system to detect the light reflected from the object;
• the photo detection system including
• a photo detector to detect the light reflected from the object, and
• a distance measuring circuit to calculate a light flight time from an output signal of the photo detector;
• the photo detector including
• a plurality of photo detection elements, and
• a plurality of trenches each provided among a plurality of the photo detection elements,
• the trenches surrounding at least the two photo detection elements.

A vehicle comprising:

• four lidar devices at respective four corners of a vehicle body;
• the lidar device including
• a light source to irradiate an object with light, and
• a photo detection system to detect the light reflected from the object;
• the photo detection system including
• a photo detector to detect the light reflected from the object, and
• a distance measuring circuit to calculate a light flight time from an output signal of the photo detector;
• the photo detector including
• a plurality of photo detection elements, and
• a plurality of trenches each provided among a plurality of the photo detection elements,
• the trenches surrounding at least the two photo detection elements.