P13552: Projected Image Prototype II
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Projector Capability Experiment

Objective

The primary objective of this experiment was to project, measure and analyze the intensity of our light source in order to make a determination regarding material selection for the bottom surface of the resin bath. This test was made possible due to assistance from the College of Imaging Science. Spectral data was collected as light was measured under varying conditions by placing panes of glass in front of the projector. The conditions for the test were as follows:

Each of these materials are candidates for the bottom surface of the resin bath. Ideally the material that allows transmission of the most UV light would be selected.

Graphical displays of the test results are shown below.

Test Results
FOR REFERENCE - Image source: http://www.olympusmicro.com

FOR REFERENCE - Image source: http://www.olympusmicro.com

Plot of the entire wavelength range.

Plot of the entire wavelength range.

Plot of 400-450nm range.

Plot of 400-450nm range.

Conclusion

The results of this test align well with our expectations. As predicted, the projector yields an insignificant amount of UV light with the current hardware. Without a reconsideration of light source, the team will have to focus further testing on identifying a polymer that will effectively cure under these conditions. Regarding material selection, this test suggests that the glass on the bottom surface of the resin bath will not have significant influence on the light being transmitted due to the absence of any UV in the first place.