CR 250 光谱式亮度、色度计

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光谱辐射度计

CR 250 光谱式亮度、色度计


“CR 250的可转动目视对准目镜系统，以及可选的监控摄像头，可大大解放测试者的眼睛”

CR 250 是一款便携性的光谱辐射度计，有可见光（380nm-780nm）和近红外（380nm-1050nm）两种型号

测试参数： 亮度，色度，光谱辐亮度，色温，显色指数，并支持透射、反射、光密度测量
应用领域： 显示器调校；LED测量；道路照明评价
主要特点： 便携、高精度；带有低温自动加热功能，可以在严寒的野外条件下正常工作

技术参数

选件与附件

软件功能

探测器	CMOS image sensor, 256 pixels （红外512 pixels）
光谱范围	380 - 780 nm （380-1080nm)
光谱带宽	5 nm
波长精度	± 0.3 nm
光谱解析度	1.6 nm / pixel
亮度范围	0.05 fL to 45000 fL(0.1-135000cd/m2)^‡
亮度精度	±2 %^Ω
亮度重复性	≤1%^Ω
色度精度	± 0.0015 x, y^Ω
色度重复性	0.0005 x, y^Ω
偏振误差	≤ 0.5 %
数字解析度	16 bits
光学系统	Direct viewing and direct measuring system
物镜	40 mm
变焦范围	200 mm to infinity
光圈	Fix (available at order time: 3°, 2°, 1°, 0.5°, 0.25°, 0.125°)
视场	10°
瞄准光路	Patent pending removable and rotatable viewing system.
同步频率	10 - 10000 Hz
曝光范围	0.02 to 30 seconds
功耗	5V, 120 mA (600 mW) via USB 2.0
数据接口	USB 2.0, Ethernet, RS-232
重量	1 pound (0.45 kg) 1.2 pounds (0.54 kg) with viewing system VO-201

选件与附件标题

强光衰减片；余弦修整器；光纤探头；内置加热器；积分球；外部触发接口（用于同步及闪烁信号测试）

不同光圈对应的测试点大小：

测试距离 (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

软件功能及特点

CR250 软件基于Colorimetry Research, Inc 公司的 CRIApp软件平台，该平台同时支持其他CR 100,200,110等产品。具有以下特点和功能：

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

免费的 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.