White Light Scanning: How Does it Work?

[Ranger Mike]

ow does white light scanning work?
I know the system is used in industry to measure parts for dimensions like diameter, size.

I know there is a white light source. There is a camera mounted at a known angle relative to the white light source. I was told the signal is obtained from the center of energy of the white light source which means the system can measure features smaller than the size of t he white light dot. Also the white light source can be targeted at surfaces up to 85 degrees form perpendicular and still yield credible data.

does anyone have more insight regarding this ?

 

[Valerie Park]

White light scanning works by using a white light source, such as an LED or laser and a camera to capture 3D images of the surface of an object. The light source is placed at a fixed angle relative to the object and a series of images are taken of the object as it is rotated. The camera then captures the light reflected off the surface of the object in order to measure its dimensions and features. The white light scanning system can measure features smaller than the size of the white light dot, and can effectively measure surfaces up to 85 degrees from perpendicular. The software then processes the images and creates a 3D model of the object that can be used for further analysis.