OL 750 Diffuse Spectral Reflectance Measurement System OL 750 Diffuse Spectral Reflectance...
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Transcript of OL 750 Diffuse Spectral Reflectance Measurement System OL 750 Diffuse Spectral Reflectance...
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
OL 750 Diffuse Spectral OL 750 Diffuse Spectral Reflectance Measurement Reflectance Measurement
SystemSystem
OL 750 Diffuse Spectral OL 750 Diffuse Spectral Reflectance Measurement Reflectance Measurement
SystemSystem
Optronic Laboratories, Inc.Optronic Laboratories, Inc.Optronic Laboratories, Inc.Optronic Laboratories, Inc.
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
About Optronic About Optronic Laboratories, Inc.Laboratories, Inc.About Optronic About Optronic
Laboratories, Inc.Laboratories, Inc.
In 1998, Optronic Laboratories, Inc. moved In 1998, Optronic Laboratories, Inc. moved into its new 25,000 square foot purpose-built into its new 25,000 square foot purpose-built
facility, consolidating and expanding facility, consolidating and expanding production, R & D and calibration facilities.production, R & D and calibration facilities.
In 1998, Optronic Laboratories, Inc. moved In 1998, Optronic Laboratories, Inc. moved into its new 25,000 square foot purpose-built into its new 25,000 square foot purpose-built
facility, consolidating and expanding facility, consolidating and expanding production, R & D and calibration facilities.production, R & D and calibration facilities.
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The heart of any spectroradiometric The heart of any spectroradiometric system is the monochromator, but…system is the monochromator, but…
It must give the right bandpasses –It must give the right bandpasses – Too large and spectra are distortedToo large and spectra are distorted Too small and signals are lowToo small and signals are low
It must give high spectral purity (low It must give high spectral purity (low stray light) so only the wavelength of stray light) so only the wavelength of interest is detected.interest is detected.
The heart of any spectroradiometric The heart of any spectroradiometric system is the monochromator, but…system is the monochromator, but…
It must give the right bandpasses –It must give the right bandpasses – Too large and spectra are distortedToo large and spectra are distorted Too small and signals are lowToo small and signals are low
It must give high spectral purity (low It must give high spectral purity (low stray light) so only the wavelength of stray light) so only the wavelength of interest is detected.interest is detected.
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
Available in single Available in single and double and double (shown) versions(shown) versions
F/4 optics for high F/4 optics for high throughputthroughput
Very low stray lightVery low stray light Numerous special Numerous special
features for most features for most accurate resultsaccurate results
Available in single Available in single and double and double (shown) versions(shown) versions
F/4 optics for high F/4 optics for high throughputthroughput
Very low stray lightVery low stray light Numerous special Numerous special
features for most features for most accurate resultsaccurate results
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
Large range of Large range of gratings availablegratings available
Optimised for high Optimised for high efficiencyefficiency
Optimised for wide Optimised for wide wavelength rangewavelength range
Optimised for high Optimised for high resolutionresolution
Large range of Large range of gratings availablegratings available
Optimised for high Optimised for high efficiencyefficiency
Optimised for wide Optimised for wide wavelength rangewavelength range
Optimised for high Optimised for high resolutionresolutionTri-grating mounts change
gratings automaticallyTri-grating mounts change
gratings automatically
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
Range of Plug-in input Range of Plug-in input accessoriesaccessories
Choppers (shown) for Choppers (shown) for IR detectorsIR detectors
Automatic control of Automatic control of chopper speed and chopper speed and “open” position stop“open” position stop
Filter-wheel for input Filter-wheel for input attenuation or filteringattenuation or filtering
Range of Plug-in input Range of Plug-in input accessoriesaccessories
Choppers (shown) for Choppers (shown) for IR detectorsIR detectors
Automatic control of Automatic control of chopper speed and chopper speed and “open” position stop“open” position stop
Filter-wheel for input Filter-wheel for input attenuation or filteringattenuation or filtering
Versatile plug-in chopper or filter wheel input accessoriesVersatile plug-in chopper or filter wheel input accessories
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
Fully automated 11 Fully automated 11 position blocking-position blocking-filter wheelfilter wheel
Includes SHUT Includes SHUT position for dark position for dark current readingscurrent readings
Optimised filters Optimised filters for widest for widest wavelength rangewavelength range
Fully automated 11 Fully automated 11 position blocking-position blocking-filter wheelfilter wheel
Includes SHUT Includes SHUT position for dark position for dark current readingscurrent readings
Optimised filters Optimised filters for widest for widest wavelength rangewavelength range
Blocking-filter wheel changes filters automatically
Blocking-filter wheel changes filters automatically
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
Blocking filters:how they work
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
Gratings diffract light Gratings diffract light at different angles at different angles depending on depending on wavelengthwavelength
400nm will also 400nm will also diffract at the same diffract at the same angle as 800nm angle as 800nm (since (since 2 x 400 = 800)2 x 400 = 800)
A blocking filter A blocking filter removes the 400nm so removes the 400nm so just 800nm is leftjust 800nm is left
Gratings diffract light Gratings diffract light at different angles at different angles depending on depending on wavelengthwavelength
400nm will also 400nm will also diffract at the same diffract at the same angle as 800nm angle as 800nm (since (since 2 x 400 = 800)2 x 400 = 800)
A blocking filter A blocking filter removes the 400nm so removes the 400nm so just 800nm is leftjust 800nm is left
400nm +
800nm
400nm +
800nm400nm400nm400nm400nm
800nm800nm
Blocking filter
Blocking filter
grating
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
Light passes into the Light passes into the monochromator monochromator through the entrance through the entrance slit, then onto the slit, then onto the first collimating first collimating mirror.mirror.
Light passes into the Light passes into the monochromator monochromator through the entrance through the entrance slit, then onto the slit, then onto the first collimating first collimating mirror.mirror.
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
Collimated (parallel) Collimated (parallel) light is directed onto light is directed onto the grating.the grating.
Collimated (parallel) Collimated (parallel) light is directed onto light is directed onto the grating.the grating.
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The grating diffracts The grating diffracts the light, sending the light, sending each wavelength off each wavelength off at a different angle.at a different angle.
The desired The desired wavelength is wavelength is collected by the first collected by the first focussing mirror….focussing mirror….
The grating diffracts The grating diffracts the light, sending the light, sending each wavelength off each wavelength off at a different angle.at a different angle.
The desired The desired wavelength is wavelength is collected by the first collected by the first focussing mirror….focussing mirror….
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
……which focuses it at which focuses it at the middle slit.the middle slit.
A second collimating A second collimating mirror collects this mirror collects this beam…beam…
……which focuses it at which focuses it at the middle slit.the middle slit.
A second collimating A second collimating mirror collects this mirror collects this beam…beam…
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
……and collimates it and collimates it onto a second onto a second grating.grating.
Since the second Since the second grating is linked to grating is linked to the first, they are at the first, they are at the same angle and the same angle and hence the same hence the same wavelength.wavelength.
……and collimates it and collimates it onto a second onto a second grating.grating.
Since the second Since the second grating is linked to grating is linked to the first, they are at the first, they are at the same angle and the same angle and hence the same hence the same wavelength.wavelength.
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
This second grating This second grating acts like the first, but acts like the first, but the spectral purity is the spectral purity is increased by many increased by many decades.decades.
This second grating This second grating acts like the first, but acts like the first, but the spectral purity is the spectral purity is increased by many increased by many decades.decades.
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The OL Series 750 The OL Series 750 MonochromatorsMonochromators
The pure The pure monochromatic light, monochromatic light, at the wavelength at the wavelength desired, is then desired, is then focussed onto the focussed onto the exit slit and emerges exit slit and emerges from the from the monochromator.monochromator.
The pure The pure monochromatic light, monochromatic light, at the wavelength at the wavelength desired, is then desired, is then focussed onto the focussed onto the exit slit and emerges exit slit and emerges from the from the monochromator.monochromator.
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 740-20 The OL Series 740-20 Light SourcesLight Sources
The OL Series 740-20 The OL Series 740-20 Light SourcesLight Sources
For transmission, reflection and For transmission, reflection and detector response measurements, a detector response measurements, a light source at the entrance of the OL light source at the entrance of the OL 750 creates monochromatic light at 750 creates monochromatic light at the exit.the exit.
The OL Series 740-20 is an ideal light The OL Series 740-20 is an ideal light source for most applications.source for most applications.
For transmission, reflection and For transmission, reflection and detector response measurements, a detector response measurements, a light source at the entrance of the OL light source at the entrance of the OL 750 creates monochromatic light at 750 creates monochromatic light at the exit.the exit.
The OL Series 740-20 is an ideal light The OL Series 740-20 is an ideal light source for most applications.source for most applications.
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 740-20 The OL Series 740-20 Light SourcesLight Sources
The OL Series 740-20 The OL Series 740-20 Light SourcesLight Sources
Single and double Single and double lamp versionslamp versions
UV lampUV lamp 200nm to 400nm200nm to 400nm
Tungsten lampTungsten lamp 250nm to 2500nm250nm to 2500nm
GlowbarGlowbar 1000nm to 1000nm to
30000nm30000nm
Single and double Single and double lamp versionslamp versions
UV lampUV lamp 200nm to 400nm200nm to 400nm
Tungsten lampTungsten lamp 250nm to 2500nm250nm to 2500nm
GlowbarGlowbar 1000nm to 1000nm to
30000nm30000nm
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 740-20 The OL Series 740-20 Light SourcesLight Sources
The OL Series 740-20 The OL Series 740-20 Light SourcesLight Sources
Optics match the Optics match the OL Series 750 OL Series 750 MonochromatorsMonochromators
Easy switching Easy switching from one source …from one source …
Optics match the Optics match the OL Series 750 OL Series 750 MonochromatorsMonochromators
Easy switching Easy switching from one source …from one source …
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 740-20 The OL Series 740-20 Light SourcesLight Sources
The OL Series 740-20 The OL Series 740-20 Light SourcesLight Sources
……to the otherto the other……to the otherto the other
Optics match the OL series 750 monochromators
Easy switching from one source …
Optics match the OL series 750 monochromators
Easy switching from one source …
Fully automated switching available
Fully automated switching available
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL 750 + OL 740-The OL 750 + OL 740-2020
The OL 750 + OL 740-The OL 750 + OL 740-2020
200 to 30,000 nm 200 to 30,000 nm coveragecoverage
monochromatic light monochromatic light prevents sample prevents sample heatingheating
Suits a very wide Suits a very wide range of standard OL range of standard OL accessoriesaccessories
Suits many existing Suits many existing and future and future applicationsapplications
200 to 30,000 nm 200 to 30,000 nm coveragecoverage
monochromatic light monochromatic light prevents sample prevents sample heatingheating
Suits a very wide Suits a very wide range of standard OL range of standard OL accessoriesaccessories
Suits many existing Suits many existing and future and future applicationsapplications
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
Reflectance Reflectance MeasurementsMeasurements
Reflectance Reflectance MeasurementsMeasurements
Reflectance can be specular (like a Reflectance can be specular (like a mirror) or diffuse (like paper).mirror) or diffuse (like paper).
Optronic Laboratories, Inc. Optronic Laboratories, Inc. manufactures a wide range of manufactures a wide range of accessories for regular and diffuse accessories for regular and diffuse transmittance.transmittance.
Reflectance can be specular (like a Reflectance can be specular (like a mirror) or diffuse (like paper).mirror) or diffuse (like paper).
Optronic Laboratories, Inc. Optronic Laboratories, Inc. manufactures a wide range of manufactures a wide range of accessories for regular and diffuse accessories for regular and diffuse transmittance.transmittance.
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
Diffuse ReflectanceDiffuse ReflectanceDiffuse ReflectanceDiffuse Reflectance
Optronic Laboratories, Inc. Optronic Laboratories, Inc. manufactures a range of fixed-angle manufactures a range of fixed-angle and Edward spheres for diffuse and Edward spheres for diffuse reflectance measurements.reflectance measurements.
To illustrate a diffuse reflectance To illustrate a diffuse reflectance measurement system, we will use the measurement system, we will use the OL 750-70 Diffuse Reflectance OL 750-70 Diffuse Reflectance Attachment.Attachment.
Optronic Laboratories, Inc. Optronic Laboratories, Inc. manufactures a range of fixed-angle manufactures a range of fixed-angle and Edward spheres for diffuse and Edward spheres for diffuse reflectance measurements.reflectance measurements.
To illustrate a diffuse reflectance To illustrate a diffuse reflectance measurement system, we will use the measurement system, we will use the OL 750-70 Diffuse Reflectance OL 750-70 Diffuse Reflectance Attachment.Attachment.
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
Diffuse ReflectanceDiffuse ReflectanceDiffuse ReflectanceDiffuse Reflectance
Diffuse reflectance Diffuse reflectance is measured is measured against a standard.against a standard.
A scan is run with A scan is run with the standard, then the standard, then another with the another with the sample.sample.
Diffuse reflectance Diffuse reflectance is measured is measured against a standard.against a standard.
A scan is run with A scan is run with the standard, then the standard, then another with the another with the sample.sample.
StandardStandardSampleSample
Optronic Laboratories, Inc.Optronic Laboratories, Inc.SampleSample
Diffuse ReflectanceDiffuse ReflectanceDiffuse ReflectanceDiffuse Reflectance
From a simple From a simple viewpoint, the ratio viewpoint, the ratio of these scans of these scans would indicate the would indicate the sample reflectance.sample reflectance.
However, the However, the throughput of the throughput of the sphere changes sphere changes due to the sample.due to the sample.
From a simple From a simple viewpoint, the ratio viewpoint, the ratio of these scans of these scans would indicate the would indicate the sample reflectance.sample reflectance.
However, the However, the throughput of the throughput of the sphere changes sphere changes due to the sample.due to the sample.
CAUTION:Change in throughput
DO NOT USE
CAUTION:Change in throughput
DO NOT USE
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
Diffuse ReflectanceDiffuse ReflectanceDiffuse ReflectanceDiffuse Reflectance
Instead, the double Instead, the double beam method beam method should be used.should be used.
This involves 4 This involves 4 scans, three to scans, three to calibrate and one calibrate and one to measure.to measure.
Instead, the double Instead, the double beam method beam method should be used.should be used.
This involves 4 This involves 4 scans, three to scans, three to calibrate and one calibrate and one to measure.to measure.
StandardStandardSampleSample
Scan 1Scan 1
Scan 2Scan 2
Scan 3Scan 3
Scan 4Scan 4
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
Diffuse ReflectanceDiffuse ReflectanceDiffuse ReflectanceDiffuse Reflectance
The scans with the The scans with the beam directed at beam directed at the wall of the the wall of the sphere correct for sphere correct for the throughput the throughput changes.changes.
The true The true reflectance can reflectance can then be calculated.then be calculated.
The scans with the The scans with the beam directed at beam directed at the wall of the the wall of the sphere correct for sphere correct for the throughput the throughput changes.changes.
The true The true reflectance can reflectance can then be calculated.then be calculated.
StandardStandardSampleSample
Scan 2Scan 2Scan 4Scan 4
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 740-70The OL Series 740-70The OL Series 740-70The OL Series 740-70
Uses the double Uses the double beam method for beam method for accurate values of accurate values of reflectancereflectance
Software guides Software guides the user through the user through the calibration and the calibration and measurementmeasurement
Uses the double Uses the double beam method for beam method for accurate values of accurate values of reflectancereflectance
Software guides Software guides the user through the user through the calibration and the calibration and measurementmeasurement
Standard or sample
Standard or sample
Beam switch mirror
Beam switch mirror
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL Series 740-70The OL Series 740-70The OL Series 740-70The OL Series 740-70
2 versions of the 2 versions of the OL 740-70 are OL 740-70 are availableavailable PTFE sphere PTFE sphere
coating for 250nm coating for 250nm to 2,500nmto 2,500nm
Gold sphere Gold sphere coating for 1,000nm coating for 1,000nm to 30,000nmto 30,000nm
2 versions of the 2 versions of the OL 740-70 are OL 740-70 are availableavailable PTFE sphere PTFE sphere
coating for 250nm coating for 250nm to 2,500nmto 2,500nm
Gold sphere Gold sphere coating for 1,000nm coating for 1,000nm to 30,000nmto 30,000nmStandard or
sampleStandard or
sample
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL 750 + OL 740-The OL 750 + OL 740-20 + OL 740-7020 + OL 740-70
The OL 750 + OL 740-The OL 750 + OL 740-20 + OL 740-7020 + OL 740-70
If we put these together…If we put these together…If we put these together…If we put these together…
And add a detector
And add a detector
Positive location&
Easy assembly
Positive location&
Easy assembly
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
The OL 750 + OL 740-The OL 750 + OL 740-20 + OL 740-7020 + OL 740-70
The OL 750 + OL 740-The OL 750 + OL 740-20 + OL 740-7020 + OL 740-70
...we have a complete system for diffuse reflectance....we have a complete system for diffuse reflectance....we have a complete system for diffuse reflectance....we have a complete system for diffuse reflectance.
The light-trap supplied also allows measurements
which exclude specular reflections.
The light-trap supplied also allows measurements
which exclude specular reflections.
Optronic Laboratories, Inc.Optronic Laboratories, Inc.
More InformationMore InformationMore InformationMore Information
The systems illustrated represent The systems illustrated represent just a few of the accessories from just a few of the accessories from Optronic Laboratories, Inc.Optronic Laboratories, Inc.
For more information:For more information: Contact your local Optronic Contact your local Optronic
Laboratories’ representativeLaboratories’ representative
Visit our website at Visit our website at www.olinet.comwww.olinet.com
The systems illustrated represent The systems illustrated represent just a few of the accessories from just a few of the accessories from Optronic Laboratories, Inc.Optronic Laboratories, Inc.
For more information:For more information: Contact your local Optronic Contact your local Optronic
Laboratories’ representativeLaboratories’ representative
Visit our website at Visit our website at www.olinet.comwww.olinet.com