It is interesting to find out the two displays have dramatically different spectral outputs. The imac has a few peaks at specific wavelengths (e.g. at 550 nm and 615 nm), while the macbook is broader.
Tuesday, March 6, 2012
The spectral output of computer LCD
I examined two computers that I have, one is a imac and the other is a macbook. The two screens were set to the same Gamma settings. Blank white Microsoft word page were open on both computers. A calibrated compact CCD spectrometer was used to scan the "white" color from two displays. The scanned spectral outputs were shown in the figure below, with the X-axis to be wavelength in nm and Y-axis with arbitrary unit.
It is interesting to find out the two displays have dramatically different spectral outputs. The imac has a few peaks at specific wavelengths (e.g. at 550 nm and 615 nm), while the macbook is broader.
It is interesting to find out the two displays have dramatically different spectral outputs. The imac has a few peaks at specific wavelengths (e.g. at 550 nm and 615 nm), while the macbook is broader.
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