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Yuji Binning VS MacAdam Ellipses

In 1942, David Macadam created 25 ellipses to measure and judge the consistency of different colors.Later, ANSI (American National Standards Institute) C78.377 suggested the standard of lighting should follow the MacAdam Ellipses.Nowadays, with the overflow of LED in the market,...

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Light and Productivity in the Workplace

Lighting in one’s work environment has a large impact on productivity. Although it may not be obvious at first glance, the type and strength of the lighting in a workplace greatly affects the physiological aspect of employees and thus overall...

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Full Spectrum Light Source of Artificial High CRI

Color is beautiful, our lives are always surrounded by a rainbow of colors, but it also affects our lives in many aspects. People tend to pick their favorite color or the color fit them most when buying clothes; we judge...

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CRI and the Visual Impact of Food

The chroma of food will affect people’s visual idea. Multiple color helps appetite, and makes food good taste. The color rendering index decide the standard chroma of food, it influence the judgment of food directly. Red, as a very important...

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High TLCI VS High CRI

The TLCI metric (Television Lighting Consistency Index) was developed as an alternative to address the shortcomings of the commonly used CRI when used with photography equipment. Because the way cameras interpret light is slightly different to how humans perceive it,...

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The Lighting System of Gallery

Under the backdrop of economic boom and political stability, the gallery industry has mushroomed in recent decade. As the site of exhibition and sales of art works, the light plays a dual role in art exhibition as well as commercial...

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High CRI LED Track Light

As directional lighting product, track lights are featured the ability to move along the track, and the adjustable irradiation angle. Generally speaking, track lights are used in Commercial application, such as shopping malls (clothing stores, furniture stores and other brand...

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High CRI LED Lighting In Fashion System

Vanity with light is a cosmetic production which produced by the Fashion industry. High-quality Vanity has bright and soft lights, not only facilitates the work of stylists, but also has high color reproduction, low color difference, and even the effect of beautifying the face. However, most of the Vanity light bulbs are relatively simple, and could not fully...

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Full Spectrum Natural Light Affects People's Emotions

Key words:  SAD   Phototherapy   Full Spectrum   LED Lighting In the Swedish capital of Stockholm in winter, whenever the sun sets at 15:00 pm, the whole city sinks into the dark and gloomy.  More than half of people in this environment will become depressed and lethargic, and looks like a vibrant different person from  summer. 3% of people even need to go to doctors. Before the 1980s, people know nothing about the causes of the personality  change occurs with seasonal variations. Later, Dr. Norman E. Rosenthal, who worked at the U.S. National Institutes of Health  Psychology as senior researcher, and clinical professor of psychiatry at Georgetown University, linked the short and dark  winter's day and the onset of seasonal depression. He and his colleagues began to study this phenomenon and defined it as  Seasonal Affective Disorder (SAD). No one knows the causes of SAD. Experts believe that the light is playing a certain role to SAD patients. With more light, you can  sometimes improve their mood. Melatonin is also considered being associated with SAD. Melatonin is secreted at night, There  would be more melatonin in human blood in winter than in summer, making human body temperature drops and becomes lethargic.  Scientists have confirmed that SAD patients’ symptoms usually are improved after light therapy, which may owing to the light  blocked the generation of melatonin. Most SAD patients need to spend 2-3 days in the  bright sunlight to eliminate abnormal symptoms. Also, you may find that when people travel closer to the equator, the symptoms  become lighter. Back in ancient Greece, Hippocrates period, when doctors had learned many aspects of the human body - both physical and  psychological aspects, are resonating with colors in spectrum. They found that the color will affect human emotions, and even  lead to many psychological disorders. In the book < COLOR ALCHEMY >, America's chief color designer Jami Lin gave a detailed  description of the psychological impact of color to human’s thoughts and feelings. And as preface for this book, Burton Jacknow  who has a PHD in The physical organic chemistry at Columbia University, had mentioned the incredible effects of light on human  body and spirit, namely - Cure Effect. In a major test conducted by National Aeronautics and Space Administration (NASA), the  researchers used colored LED light penetrate human tissue deeply to promote wound healing, accelerating the growth of human  tissue structure, and eventually proved the color wavelengths can affect the chemical structure of the human body, stimulating  natural growth in the healing process. The best way to avoid SAD, is more exposure to full spectrum natural sunlight. If your mood is changing along with the sun in  winter, you can seriously consider taking a vacation to a sunny place, it can dramatically better you healthy and mood throughout  the winter. Dr. Norman E.Rosenthal said, when people receiving the ambient light of full spectrum, his body releases significantly  reduced melatonin, by which the depression is eased, and the mood has been improved significantly. Compared to those receiving  light with certain wavelength, are subject to SAD.     For those who live in the north as well as those who stay indoor all day, the sunshine is almost a luxury during the most of the  time in year. However, general indoor lighting products have a serious lack of spectrum. For example, a primary school in  Vermont's tried to installed ultraviolet (UVB) fluorescent lamp in three classrooms. Before using this yet, the absenteeism caused  by illness of children in experimental group and the comparison group are the same, but after replacing the fluorescent, the  sickness rate of those kids who enjoyed the light with ultraviolet was reduced by 40% than the comparing group. Children have  been relatively easy to get sick particularly in winter and spring. However, this situation could be changed by using lighting  products with part of ultraviolet. That is to say, our immune system could be significantly affected by the length and quality of  our daily light we exposure in. If you can not go to a warm sunny place, you can also think of ways to make yourself at home, receiving the maximum amount...

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Recent developments

Our Progress 1. Expanded binning options to reduce green/magenta shift Some of our initial violet chip LED batches had a slightly noticeable green tint. We quickly found the reason was the deviation of Duv value. Correlated color temperature is one of the...

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