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教室护眼灯的选择要看哪些要素?

来源:http://www.wfjszmd.com/ 日期:2021-10-11 发布人:wanfeng 浏览次数:

1、看显色性显色性,是指在该光源光线的照射下,所显示颜色的情况;所显示的颜色与自然光或标准照射下的显示颜色越相近,则显色性好,反之则差。显色指数,是指显色性能的优劣。根据目前国际照明委员会建议(我国国家标准采纳),显色指数最高为100。在该光源照射下,(各种)颜色所显示的,自然光线或标准光照下的显示的颜色完全一样,差距越大则数值越小。
1. Color rendering refers to the color displayed under the irradiation of the light of the light source; The closer the displayed color is to the display color under natural light or standard illumination, the better the color rendering is, and vice versa. Color rendering index refers to the quality of color rendering performance. According to the current recommendations of the international lighting Committee (adopted by China's national standards), the maximum color rendering index is 100. Under the illumination of the light source, the colors displayed by (various) colors are exactly the same as those under natural light or standard light. The larger the gap, the smaller the value.
2、看频闪频闪是指光线随时间发生强弱、明暗周期性的变化。护眼灯若有频闪,则瞳孔会时而扩张、时而收缩,长时间使用这样的灯泡会造成人眼酸胀、疲劳,可能影响视力。一般我们使用的照明灯具,多数使用50Hz的交流电,存在频闪,人眼只能观察到30Hz/秒以下的频率闪光。所以,严格说来,护眼灯其实并不像有些广告说的“不会闪频”,而是闪频频率较高,我们肉眼无法分辨,属于不可觉察的频闪,可视为无频闪,这并不代表不会闪屏。课堂照明更应采用光频闪烁在肉眼无法察觉、照明稳定的优质LED光源。
2. Look at stroboscopic stroboscopic refers to the periodic changes of light intensity and brightness over time. If the eye protection lamp has stroboscopic, the pupil will expand and contract sometimes. Using such a lamp for a long time will cause acid swelling and fatigue of adult eyes, which may affect vision. Generally, most of the lighting lamps we use use 50Hz AC, with stroboscopic, and the human eye can only observe the flash at a frequency below 30Hz / s. Therefore, strictly speaking, the eye protection lamp is not like "no flicker" as some advertisements say, but the flicker frequency is high, which can not be distinguished by our naked eyes. It belongs to imperceptible stroboscopic, which can be regarded as no stroboscopic, which does not mean that it will not flash the screen. Classroom lighting should adopt high-quality LED light source with light frequency flicker that can not be detected by the naked eye and stable lighting.
校园护眼灯
3、看眩光因为LED是固体光源,人的眼睛看起来会感觉很刺眼,这实际上是一种眩光影响。我们所说的眩光,就是来自于光源的强光通过各种途径进入我们的眼睛,使我们的眼睛产生昏眩、不清、刺眼的感觉。护眼灯发出的光线应均匀柔和、亮度适宜、光区适度、照度均匀。根据有关要求,将护眼灯放置在距离桌面中心高度40cm位置,光源的几何中心向下。距台面中心距离60cm、观测者在距离光源几何中心水平距离60cm时,眼睛不能直接看到发光的光源,且同时看不见灯罩内反射的光源来规避眩光。
3. Look at glare. Because LED is a solid light source, people's eyes will look dazzling, which is actually a kind of glare effect. What we call glare is that the strong light from the light source enters our eyes through various ways, making our eyes feel dizzy, unclear and dazzling. The light emitted by the eye protection lamp shall be uniform and soft, with appropriate brightness, appropriate light area and uniform illumination. According to relevant requirements, the eye protection lamp shall be placed 40cm away from the center of the desktop, and the geometric center of the light source shall be downward. When the distance from the center of the table top is 60cm and the observer is 60cm from the geometric center of the light source, the eyes can not directly see the luminous light source, and can not see the light source reflected in the lampshade to avoid glare.
4、看照明在学习的过程中,注视区域内光照不足或光线过强,光线分布不均或光源闪烁不定,眼睛注视区域有眩光或反光;注视目标太小或不稳定等,都会使眼睛超负荷工作,导致学生视疲劳,并且长期在照度低、照度不均匀的照明环境下学习,极其容易引起视觉疲劳,视疲劳会导致人的近视加深、出现复视、阅读时易串行、注意力无法集中等情况发生,影响学生学习效率。
4. Look at the lighting. In the process of learning, the light in the fixation area is insufficient or the light is too strong, the light distribution is uneven or the light source flickers indefinitely, and there is glare or reflection in the eye fixation area; Looking at the target too small or unstable will overload the eyes and lead to students' visual fatigue. In addition, it is extremely easy to cause visual fatigue when studying in the lighting environment with low and uneven illumination for a long time. Visual fatigue will lead to deepening myopia, diplopia, easy serialization during reading, inability to concentrate, etc., which will affect students' learning efficiency.
5、看色温大多数教室一般使用高色温的荧光灯管(6500k),由于光线的颜色过于偏白,容易引起学生精神亢奋,容易造成疲劳。百分百照明教室护眼灯色温5000k,护眼柔和。选择优质教室护眼灯,选择百分百科技,致力于LED教室护眼灯、教室黑板灯和教室面板灯的研发生产,为广大师生提供优质教室照明光源。
5. Look at the color temperature. Most classrooms generally use fluorescent tubes with high color temperature (6500k). Because the color of the light is too white, it is easy to cause students' excitement and fatigue. 100% lighting classroom eye protection lamp with color temperature of 5000K and soft eye protection. We choose high-quality classroom eye protection lamps and 100% technology, and are committed to the R & D and production of LED classroom eye protection lamps, classroom blackboard lamps and classroom panel lamps, so as to provide high-quality classroom lighting sources for teachers and students.
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