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What kind of light source can be said to be
2018-08-01

Once upon a time, everything on earth was evolved under the care of the sun, and the fittest survived. Human beings are proliferating, and sunlight is nourished and nourished in all aspects. Photobiology has become a science.

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In human daily life, sunlight is the main mode of illumination; in the dark environment, candlelight illumination is the main complement to human wisdom for thousands of years. In modern times, it has realized more convenient filament lighting, incandescent lamps, fluorescent lamps, metal halide lamps, High-pressure gas discharge lamps are the representative of this era. In this century, it is beyond the filament lighting to achieve solid-state lighting (SSL-Solid State Lighting), LED lighting has accelerated into all areas of lighting.

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Despite the rapid development of lighting technology, sunlight is still the best source of light in all sources.


Illuminating people's challenges

Let's take a look at the two commonly used light sources, one for road lighting and one for general lighting.

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øø   HPS   øø

CCT :

1961K

CRI Ra :

8,R9:-259

CQS :

34

TLCI :

8

Rf :

27;Rg:54

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øø   Fluorescent lamp   øø

CCT :

4998K

CRI Ra :

81,R9:27

CQS :

80

TLCI :

51

Rf :

78;Rg:98

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It can be seen from the spectral performance of the high-pressure sodium lamp and the fluorescent lamp above that the blue line is black body radiation or daylight. Such a light source is far removed from natural light.

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øø   Metal halide lamp   øø

CCT :

4041K

CRI Ra :

89,R9:19

CQS :

88

TLCI :

73

Rf :

89;Rg:97

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Metal halide lamps are already a good source of light, and the gap with natural light is still obvious.

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Let's look at the typical spectrum of strong LED lighting, one is cool white light, one warm white light, and both are high quality LED light sources.

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øø   LED warm white   øø

CCT :

3000K

CRI Ra :

92,R9:54

CQS :

92

TLCI :

90

Rf :

90;Rg:97

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øø   LED cool white   øø

CCT :

5600K

CRI Ra :

93,R9:71

CQS :

91

TLCI :

95

Rf :

89;Rg:98

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It can be seen that even LEDs with a CRI of 92 or more have a huge difference between the spectrum and the natural light, and the color expression is not perfect, the public opinion CRI<90. Another bug in which LED light sources are criticized is the apparent blue peak. (PS: The blue line in the figure is blackbody radiation or daylight.)

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At present, there is a practice different from blue-light-emitting phosphors. RGB/RGBY LED light sources and OLEDs are good complements, and have improved color reproduction and color gamut.

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øø   RGB  LED   øø

CCT :

3300K

CRI Ra :

90

CQS :

90

TLCI :

100

Rf :

76

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øø   RGBY LED   øø

CCT :

3300K

CRI Ra :

90

CQS :

90

TLCI :

100

Rf :

87

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The line is still non-continuous, and the true expression of the color is still not good enough.

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The ideal source spectrum should be such that it not only meets the needs of visual lighting, but also meets the needs of physiological lighting.

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øø   Solar spectrum   øø

CCT :

5600K

CRI Ra :

100,R9:100

CQS :

100

TLCI :

100

Rf :

100;Rg:100

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øø   Black body radiation spectrum   øø

CCT :

3200K

CRI Ra :

100,R9:100

CQS :

100

TLCI :

100

Rf :

100;Rg:100

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In the actual lighting source, we certainly don't want the UV and IR parts.

Health lighting

Light, has a complex and extensive impact on organisms, in addition to the well-known biological clock, photosynthesis, visual and visual conduction, psychologically, light-absorbing photosensitizers at the macroscopic, subcellular and molecular level as well as the quantum layer facing cells, enzymes Effective substance synthesis, bioenergy, and even immunity, inheritance, and exercise all have complex effects, and many of them are still superficially cognizant or cognitive blanks.

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In the face of such complex photo-bio- interactions, the solar spectrum or the source close to the solar spectrum is the most suitable source.

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In daily life work, I have been working indoors for a long time, and I can't touch the natural light. However, the human light source lacks some spectrum in the natural light of the whole spectrum, and related health problems will gradually appear, which is difficult to satisfy people's. Physiological and psychological needs.

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Therefore, lighting should meet the needs of both visual and physiological lighting, referred to as health lighting.

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Based on this, ECO's near-solar spectrum LED-SSLECO Daylight(TM) product was first released and uses a completely different principle of UV-excited RGB phosphor technology to achieve natural spectroscopy.

Return to nature - ECO Daylight - 5600k

Under the same test conditions, the measured values of the near-solar spectrum source of S Company are compared with the measured values of the ECO Daylight near-solar spectrum source:

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øø   S company 5600K   øø

øø   ECO Daylight 5600K   øø

Under the same test conditions, the measured values of the near-solar spectrum source of S Company are compared with the measured values of the ECO Daylight near-solar spectrum source:

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øø   S company 5600K   øø

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øø   ECO Daylight 5600K   øø

Return to nature - ECO Daylight - 3200k

Under the same test conditions, the measured values of the near-solar spectrum source of S Company are compared with the measured values of the ECO Daylight near-solar spectrum source:

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øø   S company 3200K   øø

øø   ECO Daylight 3200K   øø

Under the same test conditions, the measured values of the near-solar spectrum source of S Company are compared with the measured values of the ECO Daylight near-solar spectrum source:

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øø   S company 3200K   øø

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øø   ECO Daylight 3200K   øø

Return to Nature - Visual Expression of ECO Daylight

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øø   ECO WW   øø

CCT :

3000K

CRI Ra :

92,R9:54

CQS :

92

TLCI :

90

Rf :

90;Rg:97

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Real but slightly pale.

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øø   ECO Daylight   øø

CCT :

3200K

CRI Ra :

97,R9:93

CQS :

92

TLCI :

99

Rf :

98;Rg:101

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True color reproduction.

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øø   ECO Healthy White   øø

CCT :

3200K

CRI Ra :

98,R9:97

CQS :

98

TLCI :

99

Rf :

96;Rg:105

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Real and lively.

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Return to nature - ECO Daylight application

Return to Nature - ECO Daylight is ideal for scenes that require prolonged artificial lighting and focus on health. For example, schools, offices, hospitals, reading rooms, etc.

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Classroom scene

                 

Reading room scene

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At the same time, due to the return to nature - ECO Daylight's advantages in color performance, there are natural advantages in some work scenes that require high color reproduction, such as museums, shop windows and supermarkets.

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Shop window

                 

Supermarket fresh area

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In addition, the application scenarios in HD studios and special lighting are also very optimistic.

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Museum lighting

                 

Art scene

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It is foreseeable that the solar spectrum and the blackbody radiation spectrum will be another new high point of the LED illumination source.

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