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首页> 外文会议>Optics for arts, architecture, and archaeology IV >Modular Wide Spectrum Lighting System for Diagnosis, Conservation and Restoration
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Modular Wide Spectrum Lighting System for Diagnosis, Conservation and Restoration

机译：用于诊断，保护和修复的模块化广谱照明系统

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摘要

In the framework of imaging, lighting systems have always played a key role due to the primary importance of both the uniformity of the illumination and the richness of the emitted spectra. Multispectral imaging, i.e. imaging systems working inside and outside the visible wavelength range, are even more demanding and require to pay further attention to a number of parameters characterizing the lighting system. A critical issue for lighting systems, even in the visible light, is the shape of the emitted spectra and (only in the visible range) the Color Rendering Index. The color we perceive from a surface is our eyes' interpretation of the linear spectral combination of the illuminant spectrum and the surface spectral reflectance. If there is a lack of energy in a portion of the visible spectrum, that portion will turn into black to our eyes (and to whatever instrument) regardless the actual reflectance of the surface. In other words a lack in the exciting energy hides part of the spectral reflectance of the observed subject. Furthermore, the wider is the investigated spectrum, the fewer are the sources of light able to cover such a range. In this paper we show how we solved both the problems of the not uniformity of the light beam, independently on the incident angle, and of the selection of a light source with energy rich and continuous enough emitted spectrum.
机译：在成像的框架中，由于照明的均匀性和发射光谱的丰富性的首要重要性，照明系统一直扮演着关键角色。多光谱成像，即在可见波长范围内和之外工作的成像系统，要求更高，并且需要进一步注意表征照明系统的许多参数。即使在可见光下，照明系统的一个关键问题是发射光谱的形状和（仅在可见光范围内）显色指数。我们从表面感知到的颜色是我们的眼睛对照明光谱和表面光谱反射率的线性光谱组合的解释。如果在可见光谱的一部分中缺少能量，则无论表面的实际反射率如何，该部分对于我们的眼睛（以及任何仪器）都会变成黑色。换句话说，激发能的缺乏掩盖了所观察对象的部分光谱反射率。此外，研究的光谱越宽，能够覆盖该范围的光源越少。在本文中，我们展示了如何解决与入射角无关的光束不均匀问题，以及如何选择能量丰富且发射光谱足够连续的光源。

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