Hera: cost effective spectrometer for lighting measurements
The Hera Series spectrometers is ideal for LED measurements where ease of use, stability, performance and price are key factors. Available in three spectral ranges. VIS spectrometers ranging from 380 to 780nm (Hera 01) and 360 to 830nm (Hera 02). A UV-NIR with a range of 200 to 1100nm (Hera 04).
For measurements of light sources Admesy offers a range of integrating spheres which can be connected through M8 fibre connections. A fixed position fibre connector has been developed to connect the optical fibre in a fixed and uniform way from calibration to final use. Due to this fixed position measurement results are more stable. Furthermore, the Hera series is available in a variety of optical systems: 5, 10 or 20mm collimating lens or a 1cm2 cosine corrector.
Highlights
- Three spectral ranges including VIS and UV-NIR
- Determines both spectral output and colour values
- Auto-range function
- Excellent linearity over entire dynamic range
- Dark current compensated, virtually zero over entire integration range
- Holographic grating for low stray light
- USBTMC compliant, SCPI command set, high speed device
- USB, RS232, Ethernet connections and trigger in & out for ideal system integration
- All calculations are carried out inside the device, saving processing power in production environments
- Robust housing, optimized for mounting and protection in harsh production environments
Speed & ease of use
Admesy strongly believes in developing and manufacturing devices where ease of use and speed are key factors. In order to achieve these aspects, Admesy considers the following aspects of spectrometers to be taken care of.
- Wavelength calibration
- Dark current
- Linearity
- Absolute calibration
Calculations and compensations are done in a staggering 14ms. All this is possible due to the high speed processor inside the Hera combined with algorithms developed for this specific device. In production processes, no external calculation power is needed from computers. Data can be used directly in production settings without any delay of processing data afterwards. This saves time and processing power of the operating system of a production line.
When for example setting the integration time to 10ms, full calibrated spectral data is processed within 24ms. This includes transferring data through high speed USB. This makes the Hera series an ideal LED sorting device where speeds up to 50 LEDs per second can be achieved.
Hera general specifications
Hera types 01-04
Non linearity
<1%
Spectral resolution
Selectable 0.5nm, 1nm, 2.5nm, 5nm or 10nm
Measurement parameters
Spectral output, radiometric data or colour data (Lumen, xy, DWL, PWL, CRI, CCT, etc.)
Data processing time
14ms
Integration time
2.5ms – 20s
Interfaces
High speed USB, RS232, Ethernet, Trigger connections
Size (HxWxD)
95 x 81 x 61mm (without optical system)
Weight
650 gram
Power consumption
1250mW
Operating temperature
10-35°C
Hera series specifications
Hera type
01
02
04
Spectral range
380 – 780nm
360 – 830nm
200 – 1100nm
Optical resolution (FWHM)
2.3nm
2.3nm
1.7nm
Order sorting filter
2nd order sorting on chip
2nd order sorting
Linear variable filter
Wavelength accuracy
+/-0.5nm
+/-0.5nm
+/-0.5nm
Stray light
<0.2%
<0.2%
<0.2%
Lumen accuracy
+/-4%
+/-4%
+/-4%
Chromaticity accuracy
+/-0.002
+/-0.002
+/- 0.002
Luminous flux (AIS 75)
1m – 60lm
1m – 60lm
1m – 60lm
Luminous flux (AIS 150)
5m – 300lm
5m – 300lm
5m – 300lm
Luminous flux (AIS 250)
10m – 600lm
10m – 600lm
10m – 600lm
Note: Specification is subject to change without notification, no legal rights can be derived from this specification.
Note: Specification of models which are not in production can change. Note: Typical value, contact us for different FWHM values.
Note: After calibration to the calibration standard. Note: OD filters can be incorporated for higher ranges into the spheres.
Note: Stray light measured at 400nm with 455nm cut-off filter with broadband light source. Note: Hera 04 type equipped with cosine corrector has typical best response between 250 – 1050nm.
Note: Calibrations with integrating sphere 360 – 1050nm
Integrating spheres, fibres and OD filters
Admesy offers three integrating sphere sizes. Besides, Admesy can help with customizing integrating spheres for production processes or (re)calibrate integrating spheres. Admesy uses a special M8 fibre connection which has been developed to connect the optical fibre in a consistent way to ensure best possible repeatability.
A higher measurement range can be achieved by implementing neutral density filters (OD filters) in the measurement setup. Admesy offers several OD filters to optimize the Hera for any measurement setup.
Speed & performance Hera 01 with AIS 75
Speed & performance Hera 01 with AIS 150
Speed & performance Hera 01 with AIS 250
Hera M8 fibre dimensions
Hera cosine corrector dimensions
商品属性 [波长范围] 200 – 1100nm [光学分辨率] 1.7nm