Overview: Health and comfort evaluation of LED lighting products

What is the health and comfort evaluation of lighting products:

The evaluation of health and comfort of lighting products is to evaluate the health and safety of illumination light from the perspective of human physiology and perception: to study the different light parameters (brightness, illumination) of lighting products with the final receptor of illumination, human eye. , color temperature, color rendering index, peak spectrum, stroboscopic, etc.) and the human eye? According to the correspondence between physiological functions, an objective evaluation model of human eye fatigue is constructed, and an evaluation index, a limit value/limited range and a light source ratio model for objectively quantifying the health and comfort of the human eye are proposed to guide the enterprise to produce both energy saving. Sexual and health-safe lighting products guide the healthy development of lighting products.

Lighting product health and comfort evaluation method:

The LED illumination source will form on the eyes: photobiohazard, glare hazard, Purkinje effect, eye fatigue, eye soreness, etc. Most of these are subjective feelings. Therefore, how to extract the objective measurement indicators of health and comfort from a large number of subjective physiological responses has become the most concerned issue in the global lighting industry.

Cai Jianqi Visual Humanity has established the basic refraction, Zernike high-order aberration, human visual optical transfer function (MTF), high-frequency muscle (HF), and adjustment focus by measuring the human eye through nearly three years of research. Ability to (AC/A), intraocular pressure, optic nerve feedback and other visual physiology indicators of the human eye, to obtain the parameters of visual fatigue, combined with the current subjective questionnaire survey of CIE, the evaluation system is divided into 5 grades Then, using the neural network algorithm, through the objective visual index parameters obtained by the experiment, six objective indicators are selected as the input layer P (Input) of the network, and the subjective scoring of the subject is successfully established as the output layer T (Output) through the neural network model. The relationship between objective visual indicators and subjective comfort is constructed, and the illumination health comfort evaluation model which is unified with subjective feelings and objective indicators is constructed. The MAR evaluation index is first proposed - the vision based on human eye axis and corneal refractive changes. Health comfort indicators used to characterize the visual health and comfort of lighting products.

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Label: Overview: LED lighting products health and comfort evaluation

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