A Comparison Of Light Throughput Efficiency and Bandpass of
Multispectral And Hyperspectral Imaging Systems
1
•
Multispectral with Electronic filters Include: Liquid Crystal Tunable Filters (LCTF), Acousto Optic
Tunable Filters (AOTF), and Interferometers (sequential wavelength by wavelength acquisition)
•
Hyperspectral with Wavelength Dispersive Spectroscopy (WDS): Based either on a prism, such
as the PARISS system, or a diffraction grating (All wavelengths acquired simultaneously)
WDS Grating
WDS Prism
Filter (Multi-Spectral)
Spectral Bandpass:
High
~constant
High
(changes)
Low (changes)
Efficiency:
Varies (medium to low)
High
(constant)
Low (changes)
High Order pollution:
Significant
None
Significant (limits wavelength range)
Wavelength acquisition:
Simultaneous
Simultaneous
Sequential
Field of View:
Sequential
Sequential
Simultaneous
Analytical data:
Yes
Yes
No: relative
1: Approaches to Spectral Imaging Hardware, Lerner, JM, Gat, N, Wachman, E., Current Protocols in Cytometry 12.20.1-12.20.40, July 2010
Copyright © LightForm Inc, 2011
LightForm Inc: PARISS® Analytical Spectral and Hyperspectral Imaging
Bandpass characteristics of multi-
spectral and Hyperspectral systems
Efficiency characteristics of multi-
spectral and Hyperspectral systems
Chart comparing the operating parameters of Multispectral and Hyperspectral imaging systems
•
Multispectral with Electronic filters Include: Liquid Crystal Tunable Filters (LCTF), Acousto Optic
Tunable Filters (AOTF), and Interferometers (sequential wavelength by wavelength acquisition)
•
Hyperspectral with Wavelength Dispersive Spectroscopy (WDS): Based either on a prism, such
as the PARISS system, or a diffraction grating (All wavelengths acquired simultaneously)
WDS Grating
WDS Prism
Filter (Multi-Spectral)
Spectral Bandpass:
High
~constant
High
(changes)
Low (changes)
Efficiency:
Varies (medium to low)
High
(constant)
Low (changes)
High Order pollution:
Significant
None
Significant (limits wavelength range)
Wavelength acquisition:
Simultaneous
Simultaneous
Sequential
Field of View:
Sequential
Sequential
Simultaneous
Analytical data:
Yes
Yes
No: relative
1: Approaches to Spectral Imaging Hardware, Lerner, JM, Gat, N, Wachman, E., Current Protocols in Cytometry 12.20.1-12.20.40, July 2010
Copyright © LightForm Inc, 2011
LightForm Inc: PARISS® Analytical Spectral and Hyperspectral Imaging
Bandpass characteristics of multi-
spectral and Hyperspectral systems
Efficiency characteristics of multi-
spectral and Hyperspectral systems
Chart comparing the operating parameters of Multispectral and Hyperspectral imaging systems