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eLibrary > 23/30456750 DC BS ISO 13915. Fine ceramics (advanced ceramics, advanced technical ceramics). Test method for optical properties of ceramic phosphors for white light-emitting diodes with reference materials >

23/30456750 DC BS ISO 13915. Fine ceramics (advanced ceramics, advanced technical ceramics). Test method for optical properties of ceramic phosphors for white light-emitting diodes with reference materials, 2023

23/30456750 DC BS ISO 13915. Fine ceramics (advanced ceramics, advanced technical ceramics). Test method for optical properties of ceramic phosphors for white light-emitting diodes with reference materials, 2023

ISO_DIS 13915 ed.1 - id.84441 Enquiry PDF (en).pdf [Go to Page]
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Measurement apparatus [Go to Page]
4.1 Apparatus configuration
4.2 Light source unit
4.3 Sample unit [Go to Page]
4.3.1 Cell
4.3.2 Sample compartment and cell holder
4.4 Detection unit [Go to Page]
4.4.1 Directing optical system
4.4.2 Spectrometer and detector
4.4.3 Amplifier
4.5 Signal and data processing unit
5 Calibration, inspection and maintenance of measurement apparatus [Go to Page]
5.1 General
5.2 Wavelength calibration of light source unit
5.3 Cells
5.4 Wavelength calibration of detection unit
5.5 Spectral responsivity calibration
6 Samples [Go to Page]
6.1 Reference material
6.2 Storage and pre-processing
6.3 Filling cells with phosphor powders
7 Measurement procedures [Go to Page]
7.1 Measurement environment
7.2 Spectrometer setup for substitution measurement
7.3 Measurement for reference material
7.4 Measurement for phosphor material under test
8 Calculation [Go to Page]
8.1 Spectral responsivity correction
8.2 Conversion to photon number-based spectral distribution
8.3 Calculation of scattered light and fluorescence photon numbers
8.4 External quantum efficiency
8.5 Absorptance
8.6 Internal quantum efficiency
9 Test report
Annex€A (informative) Wavelength correction of monochromators by using phosphor material with specific fluorescence peaks
Annex€B (informative) Correction method for chromaticity coordinates of ceramic phosphors for white light-emitting diodes with reference materials
Annex€C (informative) Guide to application of relevant ISO documents concerning test methods for optical properties of ceramic phosphors for white LEDs [Go to Page]

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23/30456750 DC BS ISO 13915. Fine ceramics (advanced ceramics, advanced technical ceramics). Test method for optical properties of ceramic phosphors for white light-emitting diodes with reference materials, 2023

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