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Anonymous users2024-02-16It means the amount of radiant power that can be perceived by the human eye. Luminous flux refers to the physical quantity used to express the spectral radiant power after the radiation power is affected by the visual function of the human eye.
It is equal to the product of the radiant energy of a band and the relative visibility of that band per unit of time.
Due to the different relative visibility of different wavelengths of light to the human eye, the luminous flux of different wavelengths of light is not equal when the radiation power of different wavelengths of light is equal.
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Anonymous users2024-02-15Luminous flux refers to the radiation power that can be perceived by the human eye, which is equal to the product of the radiation energy in a certain band per unit time and the relative visibility of that band.
radiant energy flux of a light source; The physical quantity of vision caused by the human eye. It is the product of the radiant energy in a band per unit of time and the relative visibility of that band. The human eye has different visibility rates for light in different wavelengths; Therefore, the optical radiation power in different bands is equal, but the luminous flux is not equal.
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Anonymous users2024-02-14Luminious flux:The sum of the light emitted by a light source per unit of time is called a light source.
luminous flux. For example, a 40W ordinary white weave lamp has a luminous flux of 350---470lm, while a 40W ordinary straight tube.
The luminous flux of fluorescent lamp is about 2800lm, which is 6-8 times that of white woven lamp.
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Anonymous users2024-02-13The amount of light passing through is a unit of lumens.
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Anonymous users2024-02-12The luminous flux (lumens lm) is not calculated, it is measured using the "luminous flux" plus the "integrating sphere".
If you know the luminous effect (lumens watts lm w) and the power (watts watts), then luminous flux = luminous efficacy * power.
If you know the illuminance (lumens decimeter lm mm) and the irradiated area (square meter mm), then luminous flux = illuminance * area.
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Anonymous users2024-02-11<>1. Luminous flux is defined as the amount of luminous flux per unit of time. Using a fluid analogy, it is similar to how many liters of water flow through per minute. The flow of light refers to the total amount of light energy produced by a light source, with no specified direction, distance, or intensity.
2. Whether an object or space appears bright or dark is determined by the amount of light emitted from a certain light source. The term for the amount of light emitted from this light source is called luminous flux.
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