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Epazo Toi Light source health standard popularization — Help To Create Healthy Lighting

More and more people are paying attention to health topics in their lives, such as the environment, diet, sleep, etc. From this, we gradually penetrate into the connection between lighting and health, and consumers are beginning to realize that unhealthy lamps and lanterns can damage the body, eyesight and brain through low color rendering index, stroboscopic flicker, glare and blue light. The concept of “healthy lighting” was born. Epazo Toi has never stopped researching and developing healthy lamps and firmly believes that a healthy lamp must have high color rendering, no video flicker, anti-glare, and no blue light hazards in order to maximize the protection of our brain and eyes, which is an important quality concept for Epazo Toi. We hope to use this to create a healthy lighting environment for more consumers.

More and more people are paying attention to health topics in their lives, such as the environment, diet, sleep, etc. From this, we gradually penetrate into the connection between lighting and health, and consumers are beginning to realize that unhealthy lamps and lanterns can damage the body, eyesight and brain through low color rendering index, stroboscopic flicker, glare and blue light. The concept of “healthy lighting” was born.

Epazo Toi has never stopped researching and developing healthy lamps and firmly believes that a healthy lamp must have high color rendering, no video flicker, anti-glare, and no blue light hazards in order to maximize the protection of our brain and eyes, which is an important quality concept for Epazo Toi. We hope to use this to create a healthy lighting environment for more consumers.

In order to help consumers better choose a healthy light, this article will provide a detailed explanation of the four elements of healthy lighting.

1.Color rendering

The natural and correct color of objects and your skin in the environment, so that people look healthy and attractive, which is extremely important for both visual effect and comfort.

In order to provide an objective indicator of the color rendering of a light source, a general color rendering index, Ra, was introduced. The maximum value of Ra is 100, and the smaller the Ra, the lower the quality of the color rendering.

Luminaires with Ra less than 80 should not be used in interiors where people work or stay for long periods of time. High-span lighting and outdoor lighting can be exceptions. But even in this case, appropriate measures should be taken to ensure that lamps with high color rendering performance are used in continuous workplaces where safety colors should be recognizable.

Experts emphasize that poor color quality will reduce visual sensitivity and the accuracy of the presentation of the illuminated object, low color rendering light will largely affect the mood and appetite, see things not realistic, things deviate from the original color, but also more likely to lead to visual fatigue, and may induce myopia.

2. Strobe

All light sources working under AC power will produce flicker. The degree of flicker depends on the frequency of the alternating current, the continuity of the light produced by the light source and the observation conditions. Flicker has a significant effect on moving objects within the viewing area. Moving objects observed under flickering illumination may appear discrete rather than continuous, an effect known as the stroboscopic effect. The level of the stroboscopic effect depends on the speed and amplitude of the flicker, as well as the speed of the object and the state of observation.

Flicker may cause a stroboscopic effect, which may occur when observing objects moving at high speeds, such as a ball moving at high speeds or a wheel spinning at high speeds.

Health effects of flicker

  • 1: Photosensitive epilepsy or seizures caused by flashing light;
  • 2: Stroboscopic effects and associated apparent slowing down or stopping of rotating machinery;
  • 3: Migraines or severe headaches often accompanied by nausea and visual disturbances;
  • 4: Increased recurrent behaviors of autism;
  • 5: visual deterioration including: ocular overload, fatigue, blurred vision, as well as traditional headaches and reduced ability to perform on vision-related tasks.

3. Glare

Glare is a visual perception due to bright areas within the visual field and is categorized as uncomfortable glare and disabling glare. Glare may also be caused by reflections from specific surfaces and is often referred to as light curtain reflections and reflective glare. In indoor workplaces, uncomfortable glare is often a direct result of bright light fixtures or windows. Limiting glare is important to avoid errors, fatigue and accidents.

ISO 8995:2002/CIE S008/E:2001 refers to a hierarchy of harmonized glare values UGR: 10-13-16-19-22-25-28, with each level representing a noticeable change in glare effect. The industry generally considers 19 to represent the threshold value between perceived comfort and discomfort.

ISO 8995:2002/CIE S008/E:2001 also emphasizes the hazards of glare to the human eye: it can cause refractive error, visual dysfunction, and has the possibility of inducing disorders of the nervous system and the human biological clock.

In addition, the industry believes that glare is also one of the important causes of visual fatigue, light if too harsh, may cause disgust, discomfort, or even visual impairment.

4. Blue light

Photochemically induced retinal damage caused by radiation within the range of 300nm-700nm.

Blue light hazard classification:

  • a. RG0 - exempt category. LED products belonging to category 0 hazard, under normal use conditions, 10000s (about 2.8h) will not cause blue light hazard to the retina.
  • b. RG1 - Low Hazard Category. LED products belonging to category 1 hazard, under normal use conditions, within 100s will not cause blue light hazard to the retina.
  • c. RG2 - Medium Hazard Category. LED products belonging to category 2 hazardous, under normal use conditions, within 0.25s will not cause blue light hazard to the retina.
  • d. RG3 - High Hazard Category. For general lighting LED products, generally do not allow the use of category 3 hazardous products.

Relevant medical research shows that the blue light hazard is mainly manifested in the eye pathology and human rhythm hazards that lead to myopia, cataracts and macular degeneration, which is manifested in three aspects:

One is the loss of structure, LED lights blue light content is too high easily caused by retinal pigment epithelial cell atrophy or even death, resulting in vision loss or even complete loss, and is an irreversible damage, but also lead to macular degeneration.

The second is visual fatigue, LED lights, the proportion of blue light is too high, the user's eyes will be in a prolonged period of time in a state of tension, thus causing visual fatigue, which may lead to deepening myopia, diplopia, easy to read serial, attention can not be focused on and other symptoms.

The third is poor sleep, blue light will inhibit the secretion of melatonin, and melatonin is an important hormone that affects sleep, and is now known to promote sleep and regulate jet lag. Prolonged use of LED lights with excessive blue light content may lead to poor sleep quality or even insomnia.

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