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How 3D Works

LASER TRIANGULATION BASICS

A laser triangulation sensor projects a laser pattern from the sensor onto the surface of an object, and images the surface with a camera or receiver array. A processor determines the location of the imaged laser on the camera and calculates the distance from the sensor to the surface. 

Lasers are used in triangulation sensors because they efficiently produce small, intense and precisely focused beams that reduce camera exposure times so errors due to object motion blur can effectively be eliminated.

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Laser Triangulation

 

Structured Light Technology

STRUCTURED LIGHT BASICS

Structured light (fringe projection) uses reflections of one or more light patterns projected onto the object to create a 3D point cloud of the object surface. Stereo cameras in the sensor are used to achieve the highest accuracy and sensor stability. 

Blue LED illumination is used to produce high-contrast patterns that deliver high-resolution scanning with excellent ambient light immunity. LED illumination is eye safe, without the need for compliance with laser safety regulations.

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