Title :
The Assessment System of Human Visual Spectral Sensitivity Curve by Frequency Modulated Light
Author :
Huang, Y.S. ; Huang, Y.P. ; Young, M.S. ; Young, M.S.
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan
Abstract :
Previous studies used fixed wavelength modulated light to demonstrate the relationship between critical flicker frequency threshold (CFFT) and the factors of the subjects. We address a method to assess the whole human visual spectral sensitivity curve (with the visible range of wavelength) to CFFT by frequency modulated light. The color sensitivity curve of three cones of human eyes is discussed as well as the hardware design of the assessment system is provided. The result shows that this system could be successfully used to experiment the relationship between the stimulus wavelength and the CFFT
Keywords :
bio-optics; biomedical equipment; colour vision; light emitting diodes; optical modulation; assessment system; color sensitivity curve; critical flicker frequency threshold; frequency modulated light; hardware design; human eyes; human visual spectral sensitivity curve; stimulus wavelength; Control systems; Frequency modulation; Humans; Light emitting diodes; Lighting control; Optical filters; Optical modulation; Optical sensors; Pulse width modulation; Wavelength measurement; modulated light; visual spectral sensitivity;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1616394
