Correction method for measuring luminous flux by using integral method
A technology of luminous flux and integral method, applied in the field of optical radiation measurement, which can solve the problem of low measurement accuracy
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Embodiment 1
[0034] Embodiment 1: a kind of correction method of integral method measuring luminous flux, comprises the following steps:
[0035] a) First, calculate the luminous flux correction coefficient K through the following formula (1):
[0036] K = K 1 × Σ zone = 1 n ( Φ Azone × F zone ) Σ zone = 1 n ( Φ Bzone × F z...
Embodiment 2
[0061] Embodiment 2: refer to figure 1 . A device for measuring relative reflection distribution parameters at various angles of an integrating sphere. Two holes are opened on the integrating sphere 1 to be measured: one hole is used to install the illuminance probe 5; 11 is slightly larger in diameter. The illuminance probe 5 calibrated by V(λ) is located on the wall of the integrating sphere behind the shading baffle 2 belonging to the attachment of the integrating sphere to be measured, and the signal of the illuminance probe 5 is transmitted to the display instrument 3 through the signal line 4 . The motor 6 is fixed on the case 7 , the case 7 is fixed on the interface seat 8 , the interface seat 8 is fixed on the integrating sphere 1 , and the bearing 10 is fixed on the interface seat 8 . The rotating shaft 11 is connected with the motor 6 through the bearing 10 , so that the power of the motor 6 is transmitted to the rotating shaft 11 . The rotating shaft 11 with cert...
Embodiment 3
[0067] Embodiment 3: on the basis of embodiment 2, we can measure and obtain following three groups of data, are respectively: the relative light intensity distribution I of luminous flux standard lamp A (C, γ), the relative light intensity distribution I of the light source to be measured B (C, γ), the relative reflection distribution parameter E(C, γ) of each angle of the integrating sphere. Through the above three sets of data, the correction coefficient K can be calculated, and the luminous flux measured by the integration method of the measured light source can be corrected by the correction coefficient K, as follows:
[0068] 1) According to the total luminous flux calculation formula of C-γ system, there are:
[0069] Φ Atot = ∫ 0 2 π ∫ 0 π I A ( ...
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