Subsequently, the chord angle measuring apparent light source , the result is :
α = 0. 041rad
4 types of radiation hazard categories for analysis , judgment .
4.1 Eye photochemical ultraviolet and near ultraviolet hazard analysis
Since the UV lamp valid credit spectral irradiance Es, EUVA are 0, less than the standard limit , so no ultraviolet and near-ultraviolet photochemical damage .
4.2 Hazard Analysis retinal blue
Standards: to prevent long-term by the blue radiation retina retinal photochemical damage , radiation exposure in the light of not more than 10000 s at time t in the case , blue weighted radiance LB should not exceed 100W • m - 2 • sr - 1.
According to measurements on the corner of the eye movement and the relationship between the experimentally measured radiation exposure time t is 10000s , the corresponding weighted blue radiance LB is 67. 2W • m - 2 • sr - 1, less than the standard limit , no standard hazard lights in the 10000s inner class does not cause damage to the retina blue provisions .
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