官宣：光不仅用于视觉
国际照明委员会（CIE）2020年推出了经过修订和更新的《国际照明词汇International Lighting Vocabulary》。
在已定义的 1347 个术语中，有一个变化最为突出。“光Light”一词本身被重新定义。
新定义包括三个词条：
17-21-012 光，<心理物理学>名词：
从激发视觉系统能力的角度考虑的辐射。
注 1：”光 “一词有时也用于可见光范围以外的光辐射，但不建议使用。
注 2：本条目在 IEC 60050-845:1987 中的编号为 845-01-06。
注 3：本条目在 CIE S 017:2011 中的编号为 17-659 (2.)。
17-21-013 光，<光度学>名词：
可见辐射的光谱范围内的辐射。
注 1：有时，物理学中也把 “光 “作为光学辐射的同义词来使用，其光谱范围从 100 纳米到 1 毫米，有时甚至包括 X 射线光谱范围。这种对“光”这一专业词汇的滥用应予以避免。
17-22-039 光，<知觉心理学>名词： 感知到的光。视觉系统特有的所有感觉和知觉的特征。
注 1：光通常，但不总是，作为光刺激作用于视觉系统的结果而被感知。
注 2：本条目在 IEC 60050-845:1987 中的编号为 845-02-17。
注 3：本条目在 CIE S 017:2011 中的编号为 17-659 (1.)。
第一种和第三种定义基本上等同于 CIE 以前对光的定义。这两个被继承下来的定义最值得注意的是，它们明确地将 “光 “局限于视觉现象。这让人越来越不舒服，因为近年来，”光 “已被普遍用于指代能引起人类非视觉反应的光学辐射。
新条目在上述清单中排名第二，将 “光”定义为一种纯物理现象。
该定义与 “光学辐射 “的定义大致相同，但仅限于可见辐射的波长区域。有了这个新条目，”光 “就不再局限于视觉现象。因此，虽然 LEUKOS 的读者已经了解到人们对波长在 380 至 780 nm 之间的光学辐射有非视觉反应，但现在使用 “对光的非视觉反应 “这样简洁的短语在技术上也是正确的。更新后的定义让我们可以说我们已经说过的话，而不会出现技术上的错误，因此这次更新是值得的，也是受欢迎的。
It’s Official, Light is Not Just for Vision
CIE recently introduced a revised and updated International Lighting Vocabulary (CIE 2020).
Within the 1,347 terms defined, there is one change that stands above the rest. The word “light” itself has been redefined. The new definition spans three entries:
● 17–21-012 light,
Radiation that is considered from the point of view of its ability to excite the visual system.
Note 1: The term “light” is sometimes used for optical radiation outside the visible range, but this usage is not recommended.
Note 2: This entry was numbered 845–01-06 in IEC 60050–845:1987. Note 3: This entry was numbered 17–659 (2.) in CIE S 017:2011.
● 17–21-013 light,
Radiation within the spectral range of visible radiation. Note 1: Sometimes, the term “light” is also used in physics as a synonym for optical radiation, covering the spectral range from 100 nm to 1 mm and sometimes even covering the X-ray spectral range. This misuse of the term “light” should be avoided.
● 17–22-039 light,
light. Characteristic of all sensations and perceptions that is specific to the visual system.
Note 1: Light is normally, but not always, perceived as a result of the action of a light stimulus
on the visual system.
Note 2: This entry was numbered 845–02-17 in IEC 60050–845:1987.
Note: This entry was numbered 17–659 (1.) in CIE S 017:2011.
The first and third definitions are essentially equivalent to how light was previously defined by CIE (CIE 2011). Most notable about these two legacy definitions, which have been carried forward, is that they unequivocally confine “light” to visual phenomenon. That had become increasingly uncomfortable because, in recent years, “light” has been commonly employed to refer to optical radiation that elicits nonvisual responses in humans.
The new entry, listed second in the above list, defines “light” as a purely physical phenomenon.
The definition is much the same as the definition of “optical radiation” but constrained within the wavelength region of visible radiation. With the new entry, “light” is no longer restricted to visual phenomena. Thus, while readers of LEUKOS already appreciate that people have nonvisual responses to optical radiation between 380 and 780 nm, it is now also technically correct to use a succinct phrase such as nonvisual responses to light. The updated definition allows us to say what we have already been saying without being technically incorrect, making this update both worthy and welcomed.
作者Kevin W. Houser
School of Civil and Construction Engineering,
Oregon State University, Corvallis, Oregon, USA
kevin.houser@oregonstate.edu
原文地址： https://doi.org/10.1080/15502724.2021.1885271