CR 250 光譜式亮度、色度計

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光譜輻射度計

CR 250 光譜式亮度、色度計


“CR 250的可轉動目視對準目鏡系統，以及可選的監控攝像頭，可大大解放測試者的眼睛”

CR 250 是一款便攜性的光譜輻射度計，有可見光（380nm-780nm）和近紅外（380nm-1050nm）兩種型號

測試參數： 亮度，色度，光譜輻亮度，色溫，顯色指數，并支持透射、反射、光密度測量
應用領域： 顯示器調校；LED測量；道路照明評價
主要特點： 便攜、高精度；帶有低溫自動加熱功能，可以在嚴寒的野外條件下正常工作

技術參數

選件與附件

軟件功能

探測器	CMOS image sensor, 256 pixels （紅外512 pixels）
光譜范圍	380 - 780 nm （380-1080nm)
光譜帶寬	5 nm
波長精度	± 0.3 nm
光譜解析度	1.6 nm / pixel
亮度范圍	0.05 fL to 45000 fL(0.1-135000cd/m2)^‡
亮度精度	±2 %^Ω
亮度重復性	≤1%^Ω
色度精度	± 0.0015 x, y^Ω
色度重復性	0.0005 x, y^Ω
偏振誤差	≤ 0.5 %
數字解析度	16 bits
光學系統	Direct viewing and direct measuring system
物鏡	40 mm
變焦范圍	200 mm to infinity
光圈	Fix (available at order time: 3°, 2°, 1°, 0.5°, 0.25°, 0.125°)
視場	10°
瞄準光路	Patent pending removable and rotatable viewing system.
同步頻率	10 - 10000 Hz
曝光范圍	0.02 to 30 seconds
功耗	5V, 120 mA (600 mW) via USB 2.0
數據接口	USB 2.0, Ethernet, RS-232
重量	1 pound (0.45 kg) 1.2 pounds (0.54 kg) with viewing system VO-201

選件與附件標題

強光衰減片；余弦修整器；光纖探頭；內置加熱器；積分球；外部觸發接口（用于同步及閃爍信號測試）

不同光圈對應的測試點大小：

測試距離 (mm)	3° Aperture (mm)	2° Aperture (mm)	1° Aperture (mm)	0.5° Aperture (mm)	0.25° Aperture (mm)	0.125° Aperture (mm)
2000	103.50	68.99	34.49	17.25	8.62	4.31
1500	77.30	51.53	25.76	12.88	6.44	3.22
1000	51.10	34.06	17.03	8.52	4.26	2.13
750	38.02	25.34	12.67	6.34	3.17	1.58
500	24.94	16.62	8.31	4.16	2.078	1.039
400	19.69	13.12	6.56	3.28	1.64	0.82
300	14.46	9.64	4.82	2.41	1.205	0.603
254	12.05	8.03	4.01	2.01	1	0.5
250	11.84	7.89	3.94	1.97	0.985	0.493
240	11.31	7.54	3.77	1.89	0.943	0.471
200	9.22	6.14	3.07	1.54	0.768	0.384

軟件功能及特點

CR250 軟件基于Colorimetry Research, Inc 公司的 CRIApp軟件平臺，該平臺同時支持其他CR 100,200,110等產品。具有以下特點和功能：

Standard

Tristimulus - XYZ (2° & 10° observers)
CIE 1931 - xy (2° observer)
CIE 1960 - uv
CIE 1964 - xy (10° observer)
CIE 1976 - u'v'
Luminance - fL & cd/m²
Illuminance - lux & fc
Luminous Intensity - candelas
Luminous Flux - lumens & candelas
RGB
CCT, MK^-1, uv Deviation
Dominant Wavelength, Purity

Transmittance

Reflectance

Absorptance

Optical Density

Contrast

Contrast Ratio
Raster Modulation
Depth of Modulation

Gamma

γ(X), γ(Y), γ(Z)

Color Rendering Index

L*a*b*

L*ab
C*ab (Chroma)
h ab (Hue)
ΔE*, ΔH*

L*u*v*

L*uv
C*uv (Chroma)
h uv (Hue)
s uv (Saturation)
ΔE*, ΔH*

Flicker

Flicker Frequency
Weighted Flicker Level (EIAJ or JEITA flicker level, ISO flicker)
Photometric Flicker (IESNA)
- Percent Flicker
- Flicker Index
- Flicker Modulation Amplitude

免費的 SDK：

The CRI colorimeters comes standard with a well documented, easy to learn, pseudo english language based, command interpreter to control all aspects of it's operation using a computer, tablet or a smart device, making it a easy for customers to create their own software dedicated to perform specific measurement tasks or for inclusion in an Automated Test Environment. In addition, a fully documented communication and calculation libraries with numerous real world sample templates are included as starting points for building your own software tools using any of the modern computer development environments such as Visual Studio, Xcode etc.
LabVIEW driver available upon request.