问 题 人眼对光谱各波长的灵敏度,是产生一种阈限反应或主观相等亮度所需要的辐射能量的倒数。它们原称光谱视亮度,现在我们称之为光谱相对视亮度。即使是等能光谱,各波长引起的相对视亮度也很不相同。具体测量时除绝对阈限法外,一般常用匹配法:使人眼将不同波长的光谱色光分别和一个固定强度的白色标准光作亮度匹配,达 The sensitivity of the human eye to each wavelength of the spectrum is the reciprocal of the radiant energy required to produce a threshold response or subjectively equivalent brightness. They were originally called spectral brightness, which we now call spectral relative brightness. Even if the energy spectrum, the relative brightness caused by the wavelength is very different. Specific measurement in addition to the absolute threshold method, the commonly used matching method: the human eye will be different wavelengths of spectral color light and a fixed intensity of the white standard light for brightness matching