Long measuring distance can easily be achieved with this kind of goniophotometer, and the mechanism of the goniophotometer is relatively simply that easy to realize high angular accuracy.
However, no matter incandescent lamps, fluorescent lamps, metal halide lamps or some other light sources, the changing of burning attitude may cause fluctuation of the irradiation state of the light source and affect the measurement precision. Generally, this influence for the discharge lamps is usually serious that can achieve several percent, and even over ten percent sometimes. For the solid state lighting sources, the influence caused by the changing of burning attitude is smaller, but the attitude changing affects the heat dissipation which is important for LED products.
Long measuring distance can easily be achieved with this kind of goniophotometer, and the mechanism of the goniophotometer is relatively simply that easy to realize high angular accuracy.However, no matter incandescent lamps, fluorescent lamps, metal halide lamps or some other light sources, the changing of burning attitude may cause fluctuation of the irradiation state of the light source and affect the measurement precision. Generally, this influence for the discharge lamps is usually serious that can achieve several percent, and even over ten percent sometimes. For the solid state lighting sources, the influence caused by the changing of burning attitude is smaller, but the attitude changing affects the heat dissipation which is important for LED products.
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