Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10408675 | Optics and Lasers in Engineering | 2005 | 15 Pages |
Abstract
The luminous intensity unit of candela was realized based on filter-radiometer, which is traceable to detector-based primary standard electrical substitution cryogenic radiometer (ESCR). In that realization the traditional Osram Wi41/G-type incandescent lamp and filter-radiometer consisting of an aperture, a V(λ) filter and a silicon photodiode based trap detector were used as light source and detection element, respectively. Measurement techniques of effective aperture area, spectral transmittance of V(λ) filter and absolute responsivity of trap detector are also presented.
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Authors
Farhad Samedov, Murat Durak, Ãzcan Bazkır,