Total luminous flux measurement system

HM/FM series

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HM/FM series

  • Accommodates Maximum 2,400mm fluorescent tube
  • ESNA LM79 and LM-80 compliant
  • Wide dynamic range thanks to high performance array spectrometer
  • Wide sphere diameter range between φ250mm and φ3,000mm
  • L-I-V, pulse, temperature control(-40℃ to +200℃) measurement are available
  • PWM(Pulse Width Modulation) applicable

#integrating sphere, integrating hemisphere, spectroradiometer, lumen, color coordinates, CCT, CRI, sphere, hemisphere, halfmoon, MCPD


HM series

  • Goniophotometric measurement for LED luminaries up to 2,400mm

  • Spectral distribution at each angle by controlling two-axis goniophotometer automatically to obtain total luminous flux with zonal spherical function

  • Goniophotometric measurement for large displays

  • Wide dynamic range with brand-new detector

  • Complying with IESNA LM-75 and CIE121

  • Usable for both Type B and Type C

  • Goniophotometric measurement at both UV and NIR region(spectral radiant flux calculation available)

FM series

  • Accommodates max. 2,400mm fluorescent tube

  • Has self absorption correction function



*Size of integrating hemisphereφ 250, φ 300, φ 500, φ 1,000, φ 1,650, φ 2,000, φ 3,000mm
Flux standard lamp< 5W, < 5V, approx. 50lm
Self absorption correction lamp< 5W, < 5V, approx. 50lm
Power supply of lamp± 0.1%, ± 2.0mA
Lamp switching boxFlux standard lamp and self absorption correction lamp are switched each other by ON/OFF with one lamp power supply  

*ask for other sizes

Array spectrometer

Wavelength range*360 ~ 1,100nm

*can be chosen from several models

Measurement items
  • Total luminous flux 〔JIS C 7801:2009 / JIS C 8152:2007〕

  • Total radiant flux(spectrum)

  • SDCM

  • Chromaticity(u, v) 〔CIE 1960UCS〕

  • Chromaticity(x, y) 〔JIS Z 8724:1997〕

  • Chromaticity(u', v') 〔CIE 1976UCS〕

  • Color Temperature & Duv 〔JIS Z 8725:1999〕

  • Dominant wavelength and Excitation purity 〔JIS Z 8701:1999〕

  • Color rendering index(Ra, R1 ~ R15) 〔JIS Z 8726:1990〕

 System configuration 

HM series

FM series