Goniophotometric Measurement System
GP series
To measure the angular distribution of luminous intensity to evaluate the goniophotometric characteristics
Measurement Items
- Angular distribution
- Spectral radiant flux
- Chromaticity
- Other
Features
- Goniophotometric measurement for LED luminaries up to 2400 mm.
- 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)
Spectroscopic Characterization Instrument About the GP series
To measure the angular distribution of luminous intensity to evaluate the goniophotometric characteristics
Features
- Goniophotometric measurement for LED luminaries up to 2400 mm.
- 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)
Measurement Items
- Angular distribution (Light distribution)
- Spectral radiant flux (Spectrum)
- Chromaticity (u,v) 〔CIE 1960UCS〕
- Spectral radiant intensity (Spectrum)
- Chromaticity (u’,v’) 〔CIE 1976UCS〕
- Chromaticity (x,y) 〔JIS Z 8724〕
- Dominant wavelength and Excitation purity 〔JIS Z 8701:1999〕
- Correlated color temperature and Duv 〔JIS Z 8725〕
- Color rendering index （Ra, R1～R15） 〔JIS Z 8726〕
Specifications
| Model | GP-500 | GP-1100 | GP-2000 |
|---|---|---|---|
| Optics | Two-axis goniometer | ||
| TypeC | TypeC | TypeB/C | |
| Optical path length | < 500mm | 500 to 1500 mm | 1500 to 12000 mm |
| Measurable sample | LED chip | General lightning Module |
General lightning (Incl. fluorescent tube) |
| Detector | Array spectrometer | ||
| Wavelength |
360nm to 830nm*2 |
||
| Measurement Items | ・Angular distribution (Light distribution) ・Spectral radiant flux (Spectrum) ・Chromaticity (u,v) 〔CIE 1960UCS〕 ・Spectral radiant intensity (Spectrum) ・Chromaticity (u’,v’) 〔CIE 1976UCS〕 ・Chromaticity (x,y) 〔JIS Z 8724〕 ・Dominant wavelength and Excitation purity 〔JIS Z 8701:1999〕 ・Correlated color temperature and Duv 〔JIS Z 8725〕 ・Color rendering index （Ra, R1～R15） 〔JIS Z 8726〕 |
||
*1 Corresponding with LM-75 for IESNA
*2 Wavelength for detecter can be adjustable
Types of coordinate system in light distribution measurement
(JIS C 8105-5)
| Coordinate system | Angle of inclination against polar axis (Vertical angle) |
Angle of inclination where the polar axis is made a rotating center. (Horizontal angle) |
IESNA LM-75 | ||
|---|---|---|---|---|---|
| Mark | Range | Mark | Range | ||
| αβ | α | -90° ≦ α ≦ 90° | β | -180° ≦ β ＜ 180° | Type B |
| θφ | θ | 0° ≦ θ ≦ 180° | θ | 0° ≦ φ ＜ 360° | Type C |
System Configuration
Contact
Please feel free to contact us with any inquiries or requests.
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