CAJ | 학술논문

本实验研究了不同亮度级的光谱色光(440,460,540,560,640,660nm)和白光的CFF。结果表明:除极高亮度(5087td)外,CFF与logI函数均呈线性关系。白光表现了最大的CFF,其图线斜率大于任何色光的图线斜率。可以见到:亮度是CFF和logI之间关系的最重要的决定因素之一。在所用的色光中,绿色不论在CFF绝对值或其图线斜率方面均高于光谱两端色光的相应数据。从而可以推断:波长对CFF和logI之间关系的效应不可忽视。光谱两端色光曲线的差别明显,而同色区内相邻色的曲线间差异则不显著,这又一次说明波长的区别对CFF的意义重大。在某些亮度水平上白光CFF绝对值低于色光,虽然在最高亮度级时其最大CFF值高于所有色光的相应数据。我们的研究结果再次提出,有必要对CIE V(λ)在某些条件下应用的适当性进行重新考虑。
본실험연구료불동량도급적광보색광(440,460,540,560,640,660nm)화백광적CFF。결과표명:제겁고량도(5087td)외,CFF여logI함수균정선성관계。백광표현료최대적CFF,기도선사솔대우임하색광적도선사솔。가이견도:량도시CFF화logI지간관계적최중요적결정인소지일。재소용적색광중,록색불론재CFF절대치혹기도선사솔방면균고우광보량단색광적상응수거。종이가이추단:파장대CFF화logI지간관계적효응불가홀시。광보량단색광곡선적차별명현,이동색구내상린색적곡선간차이칙불현저,저우일차설명파장적구별대CFF적의의중대。재모사량도수평상백광CFF절대치저우색광,수연재최고량도급시기최대CFF치고우소유색광적상응수거。아문적연구결과재차제출,유필요대CIE V(λ)재모사조건하응용적괄당성진행중신고필。
The present study examined the critical flicker fusion (CFF) of spectrallights and white light at different luminance levels. Flicker was produced byintercepting a beam of light with a sector disk driven by a variable speedmotor. Six wavelengths were used, i. e. 440, 460, 540, 560, 640 and 660 nm.CFF thresholds were determined with three subjects of normal color vision. The results indicated(1) the relation of CFF to log I or to luminancelevels (Ferry-Porter law), for a given range of luminance, is a linear one,except at the highest luminance level (5087td). White light showed CFFmax and the slope for the curve relating CFF to log I was larger than thatof each of the colored lights. It was shown that luminance is one of the mostimportant determinants for the relation between CFF and log I. (2) Amongcolored lights used, green is higher than those at the extreme ends of thespectrum for either absolute values of CFF or the slope described above.Based on these results, we may infer that the effect of wavelength on therelation between CFF and log I is not negligible. (3) While the differenceof curves described above between middle wavelength and extremes of thespectrum is rather obvious, the difference between the curves of adjacentwavelengths or the same hue is not apparent. It seems that the influence ofwavelength separations on CFF is negligible. (4) Under some luminancelevels absolute values of CFF are lower for white light than those for coloredlights, but the CFF max for white light mentioned is greater than those ofall the wavelengths used under highest luminance levels. Our findings oncemore suggest the reconsideration of the appropriateness of the application ofCIE V(λ) under certain conditions.