Surefire P3 Fury sphere measurements

rleonard

Newly Enlightened
Joined
May 15, 2014
Messages
2
My first post here.

We have a NIST calibrated, 1 meter photometry sphere here at work. Since my Surefire P3 arrived the other day I wanted to see how close to 1000 lumens it was producing.

I was most pleased to see that the measured luminous flux was 975 lumens. This was with the OEM batteries that came in the light, not fresh.

Bob

Data as follows;

Derived Data
Parameter,Scan 8,
Date/Time,5/14/2014 4:22:21 PM,
Radiant Flux (Watts),3.235E00,
Luminous Flux (lumens),9.752E02,
Scotopic Luminous Flux (lm'),1.940E03,
Chromaticity x coord,0.3082,
Chromaticity y coord,0.3220,
Chromaticity u coord,0.1973,
Chromaticity v coord,0.3092,
Delta uv,0.0013,
Chromaticity u' coord,0.1973,
Chromaticity v' coord,0.4639,
Peak Wavelength (nm),438.7,
Center Wavelength (nm),437.6,
Centroid Wavelength (nm),530.0,
Dominant Wavelength (nm),485.7,
Full Width Half Max Bandwidth (nm),23.4,
Excitation Purity (%),9.4,
Correlated Color Temperature (deg. K),6818.0,
Luminous Efficacy (lm/W),,
SDCM,8 F 6500,
Correlation,0.0054,
Correlation Coeficient,0.00127060223788679,
Color Rendering Index Average (RA),68.3562851841481,
Color Rendering Index (R1),69.8,
Color Rendering Index (R2),69.4,
Color Rendering Index (R3),69.2,
Color Rendering Index (R4),70.1,
Color Rendering Index (R5),72,
Color Rendering Index (R6),62.8,
Color Rendering Index (R7),72.4,
Color Rendering Index (R8),61.2,
Color Rendering Index (R9),-25.7,
Color Rendering Index (R10),28,
Color Rendering Index (R11),74.1,
Color Rendering Index (R12),47.5,
Color Rendering Index (R13),67.3,
Color Rendering Index (R14),82.4,
Measured DUT Current (A),N/A,
Measured DUT Voltage (V),N/A,
 

sgt253

Enlightened
Joined
Aug 17, 2004
Messages
875
Location
Chicago, Illinois
Nice. It is reassuring to know that what you have is what you expected to receive. Thanks for posting this info.


Regards.
 

rleonard

Newly Enlightened
Joined
May 15, 2014
Messages
2
The color temp looks right against the measurement. We measure 5600K lamps regularly and these are higher in cct. Here is the data in graph form;

Bob

SpectrumSF_zpsf9bfe35f.jpg
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SFChart_zps92033dab.jpg
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