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EFFECTIVE IRRADIANCE measurement probe in the spectral range of Blue light
LP 471 BLUE complete with SICRAM module and equipped with the instrument
Measurement range (W/m
2
):
0.1 10
-3 … 999.9 10 -3
1.000…19.999 20.00…199.99 200.0…1999.9
Resolution (W/m
2
): 0.1 10
-3
0.001 0.01 0.1
Spectral range: 380 nm…550 nm. Blue hazard action curve
B(λ).
Calibration uncertainty: <10%
f
2
(response according to the cosine law): <6%
f
3
(linearity): <3%
f
4
(instrument reading error):
1 digit
f
5
(fatigue): <0.5%
Drift after 1 year: <2%
Functioning temperature:
0…50 C
Typical response curve
The radiometric probe LP 471 BLUE measures the irradiance (W/m
2
) in the spectral range of
Blue light. The probe consists of a photodiode with an appropriate filter and is provided with a
diffuser for correct measurement according to the cosine law.
The spectral response curve of the probe allows to measure the effective irradiance for blue light
hazard (curve B (λ) according to the standards ACGIH / ICNIRP) in the spectral range 380nm ...
550nm. Optical radiations in this range can produce photochemical retinal injury. Another field
of application is the monitoring of the blue light irradiance in the treatment of neonatal jaundice.
λ (nm)
R
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sp
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