以30名视力正常的学生为研究对象, 采用剂量作业法、生理参数法和疲劳评价法研究了人体在峰值波长分别为468, 457, 453 nm的蓝光LED照明下的光生物节律效应。结果表明:在剂量作业法中, 蓝光LED对错误率、工作速度和脑力工作指数的影响均为453 nm＜457 nm＜468 nm; 在生理参数法中, 468 nm蓝光LED对脉搏的变化影响最大, 对收缩/舒张压的影响不明显; 在疲劳评价法中, 蓝光LED对人体舒适度的影响为453 nm＜457 nm＜468 nm。综上所述, 在3种峰值波长蓝光中, 468 nm的蓝光对人体光生物节律影响最大。

Human have different sensitivity under different wavelengths of light. By using dose work method, physiological parameter method and fatigue evaluation method, the human optical biorhythm effect of 30 students with normal vision was studied under the blue LED, whose peak wavelengths are 468, 457, and 453 nm. In the dose work method, the influence of blue LED on the error rate, speed of work, and the brainwork efficiency is: 453 nm＜457 nm＜468 nm. In physiological parameter method, 468 nm blue LED has the greatest impact on the changes of pulse, and insignificant on systolic/diastolic blood pressure. In fatigue evaluation method, effect of blue LED on human comfort is: 453 nm＜457 nm＜468 nm. In conclusion, 468 nm blue LED has great influence on human optical biological rhythm.