Overhaul of a Miniature Goniophotometer
Session Number
Project ID: ENGN 2
Advisor(s)
Dr. Kevin Martin; Northern Illinois University
Discipline
Engineering
Start Date
22-4-2020 8:30 AM
End Date
22-4-2020 8:45 AM
Abstract
A goniophotometer is a device that determines the different intensities (luminosity) of different wavelengths of light emitted from an LED at different angles. Modern goniophotometers are expensive, and the entire setup takes up the size of a large room. Our research is concerned with creating a miniaturized version of a goniophotometer. We are picking up the project from undergraduate students who have developed a one cubic meter version of the goniophotometer. Their version utilizes a Raspberry Pi, and a nanoLambda spectral sensor. However, this was only a prototyped and incomplete model, so while the previous goniophotometer was able to take spectral measurements, there were extreme inefficiencies in the coding and in the measurement algorithm. We have been working on doing a complete overhaul of the project, which includes replacing the nanoLambda sensor with a AS726X spectral sensor, two rotary encoders to more precisely measure the angle of measurements, and a complete remake of all the code.
Overhaul of a Miniature Goniophotometer
A goniophotometer is a device that determines the different intensities (luminosity) of different wavelengths of light emitted from an LED at different angles. Modern goniophotometers are expensive, and the entire setup takes up the size of a large room. Our research is concerned with creating a miniaturized version of a goniophotometer. We are picking up the project from undergraduate students who have developed a one cubic meter version of the goniophotometer. Their version utilizes a Raspberry Pi, and a nanoLambda spectral sensor. However, this was only a prototyped and incomplete model, so while the previous goniophotometer was able to take spectral measurements, there were extreme inefficiencies in the coding and in the measurement algorithm. We have been working on doing a complete overhaul of the project, which includes replacing the nanoLambda sensor with a AS726X spectral sensor, two rotary encoders to more precisely measure the angle of measurements, and a complete remake of all the code.