True color and color effect which is more important?

Lighting is a about light and visual discipline, the strength of the light, the color of the light, not just physical phenomena, as well as comprehensive physiology and psychology. In this issue, we talk about technology and moral philosophy thought.

it is well known that the development of the technology tend to be some conflicts and social morality, such as cloning technology. Actually, color also have this problem, we know that the color is divided into true color and color effect, which is more important?

we WeChat interviewed at fudan university to discuss the problem of light source and lighting engineering bachelor's degree, the Pennsylvania state university, construction engineering, CIE TC1 90年,TC1 - 91, IES color quality working group members Wei Minchen Sir, to look at him.

the following interview is the text ( Q said lighting micro classroom questions, says Dr Wei Minchen answer A)

in the field of lighting color and is not a simple colorimetric

Q light colour respect, we human beings is the real world?

A for lighting quality, color is very important aspect. And lighting in the field of color is not simple colorimetry, also is a combination of physiology and psychology. The reason we can see the color is due to our retina of three types of cones by light stimulation, then such a stimulus through visual neurotransmitter in the brain. Exactly how these three cells, however, will be the stimulus for processing, how our brain is processing the information, whether our handling of this information is affected by the cultural and geographical remains unknown.

the condition of the lighting vision research at home and abroad of Q can introduce to us a general idea of the lighting vision research at home and abroad?

the two A CIE international lighting association technical committee ( TC1- And TC1-90 91). And north American lighting association IES of a working group is a collection of scientific research personnel and lighting manufacturers strive to study how to accurately evaluate people's color vision, and the ability to source for the color of the object.

compared to our domestic lighting market, we participate in the international study researchers rarely. Our domestic with fudan university professor yan-dan Lin and her vision and color science laboratory to do a lot of work in this respect, as CIE TC1 - professor Lin himself 91 the chairman of the technical committee. We hope that the domestic lighting manufacturers on photosynthetic efficiency at the same time, more focus on quality, including color, lighting, and can be more together with our scientific research personnel to carry out the related research.

faithfully color and color effect which is more important?

Q color is divided into true color and color effect, in your opinion, which one is more important?

A: in my opinion, true color and color are very important effect.

what we call a true color ( We are usually represented) with a CRI Just will be metering source under the irradiation of color in comparing with present color in standard light source. The more similar the two, true color, the better. Used in standard light source I already described in the previous period, is the blackbody radiation model or the sun, the standard light source is just we think we are familiar with the light source, does not mean we really will be metering source of color and the color comparison under the standard light source.

along with the expansion of leds in many commercial lighting renovation project, the color will be particularly important. In transforming a process, you will be LED lighting, the color and the color of the original under the halogen tungsten lamp, and hope in two kinds of color can be as consistent as possible under the irradiation of light source. Due to the spectrum of halogen tungsten lamp and blackbody radiation, so when the LED's faithful color ability is good, the color of the object under the LED light is closer to the original halogen tungsten lamp under the irradiation of color.

the so-called effect color actually is also hope that the object in under the irradiation of light color is more beautiful. Many studies have shown that people with some commonly used color exist memory, and the memory color of these objects and under the standard light source of color is not completely the same, people prefer compared with the saturation higher color in standard light source. These color preference has something to do with race, also related to the application scenario. For example white people prefer to own some more ruddy complexion than under the standard light source; People in the hotel and for the same object in the color of the vegetable markets have different preferences.

fluorescent whitening technology replaced by LED light source technology?

Q before fluorescent whitening technology, in the current era of LED light source technology, may no longer useful, this also is a good thing?

A: in my opinion, the fluorescent whitening techniques will not disappear because of the existence of the LED. When people are in a lighting environment, we don't want all the white object is only one white degree, in other words we still need fluorescent whitening agent. How to adjust the LED spectrum to make fluorescent whitening agent play their effect is the problem we need to consider.

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