Structured Light 3D Scanner

Last crawled date: 1 year, 11 months ago

A 3D scanner is used to analyze three-dimensional objects and collect data such as their shape, size, texture, etc. The point cloud data can then be utilized in several different ways, including being imported into a CAD software package for modifications. There are several ways to go about building a homemade 3D scanner; each method involves using a light transmitter and receiver. Though, the method used in this project is the structured light method. Structured light 3D scanning can be accomplished using an overhead projector and a machine vision camera. Three dimensional scanning can be useful for engineers in need of a simplistic reverse engineering process.

Version 1 Notes:
-Acrylic plates are too flimsy
-Lead screws are difficult to rotate
-More lens separation from camera to projector is necessary
-Camera must be angled up approximately 15 degrees, or projector must be angled down approximately 15 degrees, in relation to each other
-Motion control, via lead screws, did not produce desired effect as scanner must be almost maxed out in each direction to get decent calibration and scan
-Plastic ABS connectors used to connect aluminum square tubing can be purchased from http://estoconnectors.com/
-Version 1 will not be updated

Links to other users GrabCad files used:
http://grabcad.com/library/acer-dsv0008-projector
http://grabcad.com/library/hp-30-monitor (modified)
http://grabcad.com/library/tec-m55-telecentric-lens (suppressed to simplify assembly)
http://grabcad.com/library/everest-wired-ultra-thin-keyboard-mini-compact (certain components suppressed)
http://grabcad.com/library/caster-3-tockic

Version 2 will be a tripod based design, stay tuned!