JETI Specbos 1211L2- Screen Brightness Meter - Brightness Colorimeter - Spectroradiometer

Product Description:

JETI Specbos 1211L2- Screen Brightness Meter - Brightness Colorimeter - Spectroradiometer As a special version, it is only calibrated for spectral radiance and is mainly used for radiance measurement in applications such as display calibration or projection system measurement. In addition, all other parameters of Specbos 1211L-2 are the same as the standard version Specbos 1211L-2. Its wavelength range is from 350~1000nm (the special version specbos 1211 UV-2 can extend the UV range to 230nm), based on NIST traceable calibration. This spectral radiometer is based on a high-quality array spectrometer with controlled characteristics, featuring high sensitivity, fast and accurate measurement, lightweight size, and easy portability. Starting measurement through an external trigger signal, with a built-in target laser that can be used for rapid alignment; Due to its fast and accurate measurement, this spectral radiometer is widely used in laboratories and factories, including calibration of displays or measurement of projection systems.

JETI offers two models of spectral radiometers: spectrorval and specbos. These two types of spectral radiometers are based on high-quality array spectrometers with controlled characteristics. This spectrometer uses a detector array instead of a single detector, so only fixed components are required. All calibrations can be traced back to NIST. This array spectrometer consists of input slits, gratings, possibly other optical imaging elements, line detectors, and a stable housing. Its development also overcomes some drawbacks, such as non parallel measurement, movable components, and size of occupied space. They are widely used in PC coupling, standalone, and handheld devices, and even in line process measurement.

Product Highlights:

• Wavelength range 350~1000nm (Specbos 1211UV-2 can cover 230-1000nm)
• high sensitivity
• Brightness and illuminance measurement modes can be switched
• Starting measurement through external triggering signal
• Mechanical shutter, can be used for dark signal compensation
• Automatically measure within the selected time interval
• Built in target laser
• Equipped with JETI LiVal software, easy to operate
• USB 2.0 power supply
• NIST traceable calibration
• Lightweight in size, including a portable case
• Compatible with DLL or SCPI command operations

Application scope：

• Display calibration
• Projection system measurement
• Small size light source measurement
• Laboratory general optical measurement
• Street lighting measurement
• Museum illumination measurement
• Photobiological safety measurement
• Classification of hazard levels for strong lights
• CRI measurement of medical lighting fixtures

Application example:

Upgrade options:

• Fine measurement (specbos 1211-2 focus spot diameter reduction: 3mm, 1mm, and 0.5mm diameters are optional, with fixed distance)
• Enhance measurement range (OD filter can be selected to improve the measurement range of brightness and illumination)
• Luminous flux measurement (specbos 1311-2 with 300 and 500mm integrating spheres, capable of 2 π and 4 π measurement modes)
• UV band measurement (specbos 1211UV-2 can cover 230-1000 nm)
• Photobiological safety measurement (equipped with corresponding optical lenses, probes, displacement tables, and software upgrades)
• Supports multiple types of interfaces (Bluetooth (specbos 1211-BT), RS232 (specbos 1211-RS), LAN (specbos 1211-LAN)
• Extended probe (illumination probe with fiber optic, standard and 90 ° measurement angles optional, 35cm, 1m, 3m fiber optic optional, customizable)

Technical parameters:

Optical parameters

• Spectral range: 350~1000nm
• Optical bandwidth: 4.5nm
• Digital resolution: 15 bit ADC
• Wavelength resolution: 1nm
• Field of view angle: 1.8 ° (brightness mode)
• Polarization error: f₈=0.5%
• Measurement distance/spot diameter: 20cm - φ 6mm; 100cm - φ 31mm (brightness mode)

Measurement value

• Brightness/Total Brightness and Weighted Brightness
• Illumination/total illumination and weighted illumination
• Spectral radiance/spectral radiance
• Relative Color Temperature (CCT), Color Purity
• Color coordinate x, y；u’,v’
• CRI，CQS，RGB
• Sichen rhythm index, photosynthetic activity radiation

Measurement range and accuracy

• Illuminance measurement range: 1-1800000lx (Ill.A)

1~1,500,000lx/m2（typical warm white LED）

(Using a filter can achieve a higher range)

• Brightness measurement range: 0.2~150000cd/m²（Ill.A）

0.2~100,000cd/m²（typical warm white LED）

(Using a filter can achieve a higher range)

• Brightness accuracy: ± 2% (@ 100cd/m)²and Ill.A）
• Brightness repeatability: ± 1% (@ 100cd/m)²and Ill.A）
• Color temperature repeatability: ± 20K (Ill. A)
• Color repeatability: ± 0.0005 x, y（Ill.A）
• Chromaticity accuracy: ± 0.002 x, y（Ill.A）

Other technical parameters

• Spectral element: imaging grating (flat field)
• Light receiving element: rear thin CCD array 2048 pixels (binned)
• Power supply: USB hub power supply
• Interface: USB 2.0 fullspeed； Bluetooth (specbos 1211-BT)；
• RS232 (specbos 1211-RS)； LAN (specbos 1211-LAN)
• Operating conditions: temperature between 10-40 ℃; Humidity<85% relative humidity (35 ℃)
• Calibration: NIST traceable (recommended interval: 1 year)
• Size: 180mm x 82mm x 53mm
• Weight: 450g

Accessories include:

• Accessories (included): PC software JETI LiVal for Windows 7/8/10, SDK

USB cable and trigger interface

Cosine diffuser (illumination mode)

Calibration report, operation manual, tripod, transport box

• Accessories (optional): filters, side and fiber extension probes, various optical lenses

JETI LiVal software: