一种声光色度计
An Acousto-Optic Colorimeter
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中文总结 AI 辅助
本文提出一种声光色度计，利用四通道声光可调滤波器和超连续谱激光器生成高饱和、均匀且稳定的刺激，覆盖95%的CIE 1964色度区域，以填补色差测量中高饱和区域的数据空白。
中文摘要 AI 辅助
均匀颜色空间和色差公式所依据的视觉数据几乎全部来自表面样品和常规显示器，而这些设备的主原色将测量限制在有限的色度范围内。因此，在量子点、微发光二极管和激光显示器开始进入高饱和色域运行的当下，颜色空间中高度饱和的区域恰恰是人类颜色感知中测量最少的部分。要填补这一空白，需要比任何固定原色设备所能产生的刺激更饱和的刺激，同时满足视觉实验所要求的稳定性和均匀性。我们为此构建了一种声光色度计。一个四通道声光可调滤波器从超连续谱激光器中选取窄光谱成分，覆盖校准范围443至660纳米，实测线宽为1.37至3.20纳米；每个成分的波长和辐射度均通过电子方式设定，因此原色组本身成为实验变量。一个紧凑的漫射器-光管匀光器将所选成分合成为均匀的观察视场，光谱反馈稳定其强度。校准后的原色组覆盖了CIE 1964年10度光谱轨迹在x,y色度平面内所包围面积的95%。计算的最大亮度达到1406坎德拉每平方米，在灰色罗伯逊色度点可获得328坎德拉每平方米。在18毫米观察视场上，平均空间ΔE00差异为0.913，在连续反馈下复现的五个罗伯逊颜色中心在10分钟间隔内的平均目标误差为0.34至1.26 ΔE00。因此，该仪器能够提供校准、均匀且稳定的高饱和刺激，旨在将色差测量的经验基础扩展到目前仍缺乏数据的区域。
英文摘要
Uniform color spaces and color-difference formulae rest on visual data obtained almost entirely with surface samples and conventional displays, whose primaries confine the measurements to a limited chromaticity range. The highly saturated region of color space is therefore the least measured part of human color perception, at the moment when quantum-dot, microLED, and laser displays have begun to operate inside it. Closing this gap requires stimuli more saturated than any fixed-primary device can produce, together with the stability and uniformity demanded by visual experiments. We present an acousto-optic colorimeter built for this purpose. A four-channel acousto-optic tunable filter selects narrow spectral components from a supercontinuum laser over the calibrated range of 443--660~nm, with measured linewidths of 1.37--3.20~nm; the wavelength and radiance of every component are set electronically, so the primary set itself becomes an experimental variable. A compact diffuser--light-pipe homogenizer combines the selected components into a uniform observation field, and spectral feedback stabilizes their intensities. The calibrated primary set covered 95\% of the area enclosed by the CIE 1964 $10^{\circ}$ spectral locus in the $x,y$ chromaticity plane. The calculated maximum luminance reached 1406~cd\,m$^{-2}$, with 328~cd\,m$^{-2}$ available at the gray Robertson chromaticity. Across an 18-mm observation field the mean spatial $ΔE_{00}$ difference was 0.913, and five Robertson color centers reproduced under continuous feedback gave mean target errors of 0.34--1.26~$ΔE_{00}$ over 10-min intervals. The instrument thus delivers calibrated, uniform, and stable highly saturated stimuli, and is intended to extend the empirical basis of color-difference measurement into the region where data are still absent.
发表机构
- Color Reproduction and Synthesis Institute（色彩再现与合成研究所）
- Moscow Center for Advanced Studies（莫斯科高级研究中心）
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