Spectral Sensors

CORONA - The compact sensor unit for universal use-1-Spectral Sensors! CORONA is a compact application-oriented
diode array sensor unit based on well-proof andinnovated units like MMS1, MMS NIR, OMK500,
OFR und TSPEC electronic unit
! Rugged and reliable optical and electronical units permitt use
in production control, on-line quality control, mobile applications andeven mounted on acricultural harvesting machines.
! CORONA ist the first industrial proof spectral sensor unit
allowing spectral scans between 360 - 2200 nm in few milliseconds.
! Several versions with application designed measuring optics available! Interface compatible with ZEISS Diode array system MCS500-2-Spectral Sensors

CORONA Benefits

CORONA compact - many advantages at a glance:! modern diode array technology! Fast, precise and robust! Large wavelength range in milliseconds detectable! Permanently aligned due to no moving parts! Reflection and Transmission measurement
possible! easy and fast installation! Large software package from color measurement
until chemometric algorythms-3-

Spectral Sensors

CORONA Highlights! Compact, application oriented sensor unit––

based on reliable, proven and innovative moduls from ZEISS like
MMS1, MMS NIR, OMK500 and TSPEC! Robust optical and electronical components––

guarantee reliable application in production, in-line spectroscopy, agricultural equipment
and quality control! CORONA is the first in-line reflections/transmissions measuring head,–

which allows simultaneous measurement in the VIS- and NIR-range within milliseconds! New applications like the combination of color and moisture measurement– in the textile industry–

during harvesting of corn-4-

Spectral Sensors

CORONA Family Tree

Mean price (k$)
Corona1001999
1988 / 1995

10MCS 500

1MCS- / MMS-Module

1985 / 1993

0,1
GitterIntegration-5-

Spectral Sensors

CORONA Components

Polychromator
Measuring head
Housing IP65
Light source
Power supply
Electronic unit

Interface-6-

Spectral Sensors

The standard of all things: Precision to the smallest detailLight source• Halogen lamp , 10W,
• Colour temperature 2900 K

Interface• RS 422• RS 485• RS 232

Electronics• 16 Bit resolution• 200 kHz measuring frequency• integrated microprocessor

Polychromator
The module consists of a spectral
measuring body,bonded with a concave
grating that corrects aberrations, a fibrecross-section converter as an optical input
and a diode array detector.
• Compact, permanently aligned design• Robust and thermally stable• Small• High degree of light sensitivity

OMK
Measurement of diffuse reflection.
Lighting 0°
Observation 45° circular
Effective measuring area 20 mm
Reflection/transmission optics

Reflectance sphere

Projection 1:1
Measuring area 3mm
Projection 1: infinite
Measuring area 15 mm

Lighting diffuse
Observation 0° or 8°
Diameter of sphere ∅ 55 mm
Effective measuring area ∅ 15 mm-7-Spectral Sensors

Configuration example for transmission measurement-8-Spectral Sensors

MMS Design Principles! Fiber cross-section converter as optical input, SMA connector! Holographically recorded and blazed imaging grating! Photodiode Read-out! Robust housing, no moving parts-9-

Spectral Sensors
CORONA Family
Model

Wavelength range

Measuring geometry

Application

CORONA 45 VIS

380-1050 nm

Reflexion

Color

CORONA 45 NIR

950-1700 nm

Reflexion

CORONA 45 VISNIRCORONA D VIS

380-1700 nm
380-1050 nm

Reflexion
Reflexion

CORONA D VISNIR

380-1700 nm

Reflexion

CORONA T VISCORONA T VISNIRCORONA TF VIS

380–1050 nm
380-1700 nm
380-1050 nmTransmission
Transmission
Reflexion/Transmission

CORONA TF VISNIR

380-1700 nm

Reflexion/Transmission

CORONA FOCUS

380-1050 nm

Reflexion

moistureproteinfat
dry substancecolor + moisture
Reflection of
Coated foils
Reflection of
Coated foils
Transmission
Transmission
Reflection /Transmission
Reflection /Transmission
Reflexion-10-Spectral Sensors

Applications CORONA! Combine harvester with diode array sensor ( VIS-NIR)! Measurement of moisture, protein, color, oil, ...

-11-

Spectral Sensors

Applications CORONAInvestigation of foods! Determination of fat, starch and proteins in food
! Detection of the moisture of products! Monitoring of drying processes! Incoming inspection of powder-based products
such as flour or milk powder

Measuring running conveyor belts! Determination of moisture and colour in paper manufacture! On-line colour of textile and plastic lines! Determination of colour and heat protection degree ofarchitectural glass! Measurement of layer thickness of foils-12-Spectral Sensors

Applications CORONA
Optical industry! Reflection and transmission properties of coated glass! Colour properties of optical coatings

Plastics technology! Identification of plastics! Colour of plastic lines or components! Specification of layer thickness of transparent coatings

Pharmaceutical industry! Identification of raw materials! Powder blending-13-

Spectral Sensors
SoftwareGRAMS 32
from Galactic
running with CORONA! Detection of spectral ranges and data processing! Macro programming! UV/VIS/NIR application package! 3D visualisation! Chemometric routines for the creation of calibration models! Library administration-14-

Spectral Sensors
Software
ASPECT PLUS

The ZEISS standard package for Spectroscopy! Macro programming for the creation of automated sequences! Multi-component analysis! Extensive mathematical functions! Options for colour and calculation of layer thickness! Data export to ASCII, JCAMP, GRAMS formats-15-

Spectral Sensors
Software! Customer-designed Solutions! More 20 software packages for on-line applications
and routine measurements

Programmed under LabView from NI! We also provide libraries in C and LabView !
-16-

Spectral Sensors

Spectra of Fresh Grass with Different Dry Matteron the ZEISS CORONA ( MMS-NIR 1.7)
0,7f re s h g ra s sA b s o r p tio n (L o g 1 /R

0,60,50,40,30,20,1d ry g ra s s0,096 0

1 02 81 101

11 73

124 5

1 31 8

1 390

14 62

15 34

1 60 7

1 67 9W a v e le n g th (n m )-17-

Spectral Sensors

Calibration Comparison of Dry Samples
on the NIRSystems ( scanning) and the ZEISS ( Diode array)
Equalized Wavelength Range
958-1678 nm

NIRSystem s 6500

ZEISS M M S-N IR

Constituentn (6500/M M S)

Range (% )Term sSE

Term sSEDry Matter

94 / 97

93,8 - 98,7

50,43

70,46

Crude Protein

92 / 94

8,7 - 23,7

80,52

80,57

Crude Ash

65 / 64

7,6 - 12,6

60,61

50,67

Crude Fibre

94 / 94

16,7 - 34,1

80,99

8

1,22W SC

194 / 193

3,3 - 15,5

120,63

100,87EULOS

93 / 93

116,5 - 388,3

815,99819,21-18-