植物生长灯对人体有什么危害?

植物生长灯对人体有什么危害?

2018-03-18 21:22:02 55
LED植物生长灯光源主要是由红蓝光源组成的,采用植物最敏感的光波段,蓝光波长使用450-460nm和460-470nm。
蓝光是波长处于400nm-480nm之间具有相对较高能量的光线,大量存在于电脑显示器、荧光灯、手机、数码产品、显示屏、LED等光线中,该波长内的蓝光会使眼睛内的黄斑区毒素量增高,严重威胁我们的眼底健康。


蓝光的具体危害有哪些:
  
1、蓝光将加重视网膜黄斑区疾病
随着年龄的增长,视网膜色素上皮细胞吞噬作用后留下的脂褐质(细胞碎片)将在视网膜色素上皮细胞层逐渐积累,将造成视网膜对慢性光线照射伤更为敏感。蓝光将加重由于遗传、营养、环境、健康习惯和老年相关性引起的黄斑问题。在长时间的曝光后视网膜的毒性将随着波长的缩短而增加,从而加重黄斑区疾病。

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2、蓝光可导致白内障术后的眼底损伤
随着年龄的增长,人体本身的晶状体会逐渐偏黄。这有助于过滤蓝光。然而白内障手术后病人失去了这些天然屏障。蓝光将直达视网膜,进而损伤视网膜色素上皮细胞,严重影响眼底健康。
  
3、蓝光可已发视觉模糊,导致视觉疲劳,引起VDT综合征
蓝光射入眼底经过聚焦后焦点没有落在视网膜上而是落在视网膜与晶状体之间。这就增大了光线在眼内聚焦的色差距离。而眼内焦点之间的距离是形成视物模糊的主要原因,所以蓝光的射入会加剧色差和视觉模糊度,到时眼部肌肉过度紧张,眼部供血过度紧张,眼部血液供应加强,从而加重疲劳。
  
4、蓝光可以发眩光
蓝光在处于400nm-500nm之间具有较高的能量。而能量较高的光线在遇到空气中细小粒子时散射几率较高,蓝光便成了晃眼的主要原因。

5、蓝光能够抑制褪黑素的分泌、打扰睡眠,提高自身重大疾病的发生率

蓝光光线足以刺激大脑,使得大脑处于兴奋状态,影响生物钟规律,出现入睡需要时间过长,睡眠过程中多次醒来等失眠症状。
  
睡不好觉意味着各器官系统都容易出现功能障碍。睡觉不足或睡觉质量低的人免疫功能、反应力、记忆力和协调能力明显下降,罹患糖尿病、心脏病、癌症、肥胖、消化不良、便秘、抑郁症等疾病的几率增大。


如果经常在植物生长灯环境下工作,请务必佩戴专业的防护眼镜,上海素里生物技术有限公司供应美国LUYOR公司的防护眼镜。

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Digital Blue Light Sources
So what’s blue light, anyway? For starters, sunlight contains 25-30% blue light, so some blue light is natural. Artificial light sources emitting blue light include compact fluorescent lamps (CFL) and LEDs. These are the bulbs which are replacing traditional light bulbs. Interestingly, traditional incandescent light bulbs emit very little blue light.
LEDs are found in almost every digital device including computer monitors, tablets, readers and smartphones. Additionally, studies show we hold digital devices closer to eyes than printed materials, typically 12 inches for digital devices as compared to 16 inches for traditional print. This also increases blue light exposure. For younger people the blue light exposure is even higher. Young people typically have larger pupils which allow even more blue light to enter the eye. Not only that, but kids age 8-18 spend an average of 7+ hours day viewing LED screens.
The science of Blue Light
This mini lesson in the science of light will be less painful than a sunburn—I promise!
Light is described in wavelengths measured in Nanometers (nm). Visible light ranges from about 380 to 780nm and  lies between Ultraviolet Rays (UV) -up to 380 nm- and infrared rays over (780nm). We all understand UV Rays cause your skin to tan or burn.
The blue/violet portion of visible light, from 380 to 500 nm, is next to Ultraviolet (UV) rays, as shown in the chart below. These wavelengths of blue light in the near UV range are sometimes referred to as “High Energy Visible” Light or HEV light.