latest advances in spectroradiometric measurement systems for night vision compatible displays...

Optronic Laboratories, Inc.Optronic Laboratories, Inc.

Latest Advances in Latest Advances in Spectroradiometric Measurement Spectroradiometric Measurement

Systems for Systems for Night Vision Compatible DisplaysNight Vision Compatible Displays

Latest Advances in Latest Advances in Spectroradiometric Measurement Spectroradiometric Measurement

Systems for Systems for Night Vision Compatible DisplaysNight Vision Compatible Displays

Optronic Laboratories, Inc.Optronic Laboratories, Inc.Optronic Laboratories, Inc.Optronic Laboratories, Inc.

Make It Easy to Meet and Exceed the Make It Easy to Meet and Exceed the Requirements of MIL-L-85762A StandardRequirements of MIL-L-85762A Standard


Outline of PresentationOutline of PresentationOutline of PresentationOutline of Presentation

About Optronic Laboratories, Inc.About Optronic Laboratories, Inc. Introduction to the OL 750-NVGIntroduction to the OL 750-NVG Practical aspects of measurementPractical aspects of measurement Key MIL-L-85762A requirements and OL Key MIL-L-85762A requirements and OL

750-NVG performance750-NVG performance Essential performance beyond MIL-L-Essential performance beyond MIL-L-

85762A85762A Special featuresSpecial features

About Optronic Laboratories, Inc.About Optronic Laboratories, Inc. Introduction to the OL 750-NVGIntroduction to the OL 750-NVG Practical aspects of measurementPractical aspects of measurement Key MIL-L-85762A requirements and OL Key MIL-L-85762A requirements and OL

750-NVG performance750-NVG performance Essential performance beyond MIL-L-Essential performance beyond MIL-L-

85762A85762A Special featuresSpecial features


About Optronic About Optronic Laboratories, Inc.Laboratories, Inc.About Optronic About Optronic

Laboratories, Inc.Laboratories, Inc.Optronic Laboratories, Inc. was established in 1970 Optronic Laboratories, Inc. was established in 1970

by two eminent researchers at NIST (then NBS). by two eminent researchers at NIST (then NBS). Facilities were modeled after NIST, and Optronic Facilities were modeled after NIST, and Optronic

Laboratories, Inc. achieved a worldwide reputation Laboratories, Inc. achieved a worldwide reputation for excellence in light measurement and calibration.for excellence in light measurement and calibration.

Continuing to work closely with NIST, the Continuing to work closely with NIST, the development of new instruments and techniques at development of new instruments and techniques at Optronic Laboratories, Inc. constantly improves the Optronic Laboratories, Inc. constantly improves the

accuracy and precision of light measurement.accuracy and precision of light measurement.

Optronic Laboratories, Inc. was established in 1970 Optronic Laboratories, Inc. was established in 1970 by two eminent researchers at NIST (then NBS). by two eminent researchers at NIST (then NBS). Facilities were modeled after NIST, and Optronic Facilities were modeled after NIST, and Optronic

Laboratories, Inc. achieved a worldwide reputation Laboratories, Inc. achieved a worldwide reputation for excellence in light measurement and calibration.for excellence in light measurement and calibration.

Continuing to work closely with NIST, the Continuing to work closely with NIST, the development of new instruments and techniques at development of new instruments and techniques at Optronic Laboratories, Inc. constantly improves the Optronic Laboratories, Inc. constantly improves the

accuracy and precision of light measurement.accuracy and precision of light measurement.



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.


Spectroradiometers:Spectroradiometers: laboratory & field portablelaboratory & field portable

Spectroradiometers:Spectroradiometers: laboratory & field portablelaboratory & field portable

Broad-band radiometers & Broad-band radiometers & photometers:photometers: DC, AC, pulsed or modulated sourcesDC, AC, pulsed or modulated sources

Broad-band radiometers & Broad-band radiometers & photometers:photometers: DC, AC, pulsed or modulated sourcesDC, AC, pulsed or modulated sources

Sphere systems:Sphere systems: from 1” to 76” diameter as standardfrom 1” to 76” diameter as standard

Sphere systems:Sphere systems: from 1” to 76” diameter as standardfrom 1” to 76” diameter as standard

NIST-traceable calibration sources, NIST-traceable calibration sources, materials & detectors:materials & detectors: from 200 nm to 30,000 nmfrom 200 nm to 30,000 nm

NIST-traceable calibration sources, NIST-traceable calibration sources, materials & detectors:materials & detectors: from 200 nm to 30,000 nmfrom 200 nm to 30,000 nm

Measurement services:Measurement services: sources, materials & detectorssources, materials & detectors

Measurement services:Measurement services: sources, materials & detectorssources, materials & detectors

Customization/new product Customization/new product developmentdevelopment

Customization/new product Customization/new product developmentdevelopment

Training, consultation & advice Training, consultation & advice Training, consultation & advice Training, consultation & advice


Laboratories, Inc.Laboratories, Inc.Optronic Laboratories’ instruments & Optronic Laboratories’ instruments & services include:services include:


Introduction to the OL Introduction to the OL 750-NVG750-NVG

Introduction to the OL Introduction to the OL 750-NVG750-NVG

The OL 750-NVG measures NVIS compatible displays to MIL-L-85762A with unequaled accuracy and performanceThe OL 750-NVG measures NVIS compatible displays to MIL-L-85762A with unequaled accuracy and performance


Introduction to theIntroduction to theOL 750-NVGOL 750-NVG


The OL 750-NVG comprises: A specially configured

OL 750 monochromator

A specially configured

OL 750 monochromator

The OL 600-NVG Telescope

The OL 600-NVG Telescope

A special high-sensitivity low-noise GaAs PMT

A special high-sensitivity low-noise GaAs PMT

Temperature regulation for stability

Temperature regulation for stability

Digital Signal Processing (DSP) for best results

Digital Signal Processing (DSP) for best results

Powerful software with dedicated NVIS routinesPowerful software with

dedicated NVIS routines




The OL 750-NVG comprises:

Now for a closer look at the special OL 750

monochromator configuration:

Specifically for NVIS measurements

Now for a closer look at the special OL 750

monochromator configuration:

Specifically for NVIS measurements




The OL 750-NVG comprises:Fully automatic ND filter wheel

for highest dynamic range

Fully automatic ND filter wheel

for highest dynamic range

Depolarizer for accurate results even on LCD

displays

Depolarizer for accurate results even on LCD

displays

Blocking filters optimized for

lowest stray light

Blocking filters optimized for

lowest stray light

Multiple gratings for optimum response

Multiple gratings for optimum response

Choice of single or double

monochromator

Choice of single or double

monochromator




The OL 600-NVG is ideal for display measurements because it uses a “Pritchard” design. The parallax and alignment

errors of other designs are eliminated completely.

The OL 600-NVG is ideal for display measurements because it uses a “Pritchard” design. The parallax and alignment

errors of other designs are eliminated completely.

Here is how it works

Here is how it works




DisplayDisplay

Image appears with a “missing”

circular area

Image appears with a “missing”

circular areaThe “missing” portion is sent to the detector

The “missing” portion is sent to the detector




Diffraction-limited Diffraction-limited optics ensure the optics ensure the sharpest, clearest sharpest, clearest images are seenimages are seen

Multiple apertures Multiple apertures for optimum field-for optimum field-of-viewof-view

Photometer option Photometer option availableavailable

Diffraction-limited Diffraction-limited optics ensure the optics ensure the sharpest, clearest sharpest, clearest images are seenimages are seen

Multiple apertures Multiple apertures for optimum field-for optimum field-of-viewof-view

Photometer option Photometer option availableavailable

Diffraction- limited opticsDiffraction-

limited optics

Eyepiece is actually a high quality microscope

for best viewing

Eyepiece is actually a high quality microscope

for best viewing

Selectable apertures

Selectable apertures

Measurement area can be sent to OL 750-NVG or photometer

without re-alignment

Measurement area can be sent to OL 750-NVG or photometer

without re-alignment


Practical Aspects of Practical Aspects of MeasurementMeasurement


The first stage in testing is to isolate the part of The first stage in testing is to isolate the part of the display to be measured.the display to be measured.This is a lot easier if the user sees a magnified This is a lot easier if the user sees a magnified image of the display.image of the display.

The first stage in testing is to isolate the part of The first stage in testing is to isolate the part of the display to be measured.the display to be measured.This is a lot easier if the user sees a magnified This is a lot easier if the user sees a magnified image of the display.image of the display.


The OL 600-NVG presents a magnified image which The OL 600-NVG presents a magnified image which makes alignment easy and reduces eye-strain. The makes alignment easy and reduces eye-strain. The “spot” being measured appears as a black circle on “spot” being measured appears as a black circle on the image.the image.

The OL 600-NVG presents a magnified image which The OL 600-NVG presents a magnified image which makes alignment easy and reduces eye-strain. The makes alignment easy and reduces eye-strain. The “spot” being measured appears as a black circle on “spot” being measured appears as a black circle on the image.the image.

This black circle is no more than the image This black circle is no more than the image of an aperture, which can be changed to suit of an aperture, which can be changed to suit measurements.measurements.

This black circle is no more than the image This black circle is no more than the image of an aperture, which can be changed to suit of an aperture, which can be changed to suit measurements.measurements.



Anything within the

black circle is measured

Anything within the

black circle is measured


The OL 600-NVG has 5 selectable apertures The OL 600-NVG has 5 selectable apertures to provide the optimum spot sizes for all to provide the optimum spot sizes for all NVIS displays. These are:NVIS displays. These are:

The OL 600-NVG has 5 selectable apertures The OL 600-NVG has 5 selectable apertures to provide the optimum spot sizes for all to provide the optimum spot sizes for all NVIS displays. These are:NVIS displays. These are:

0.18 mm(0.007”)0.18 mm(0.007”)0.30 mm(0.012”)0.30 mm(0.012”)0.60 mm(0.024”)0.60 mm(0.024”)1.80 mm(0.07”)

1.80 mm(0.07”)

3.00 mm(0.12”)

3.00 mm(0.12”)




MIL-L-85762A MIL-L-85762A RequirementsRequirementsMIL-L-85762A MIL-L-85762A RequirementsRequirements

MIL-L-85762A specifies performance of MIL-L-85762A specifies performance of NVIS compatible displays, but the NVIS compatible displays, but the equipment used in testing conformance equipment used in testing conformance must also meet specifications.must also meet specifications.

Testing equipment must meet ALL of the Testing equipment must meet ALL of the specifications.specifications.

Some of these specifications are trivial for Some of these specifications are trivial for modern instruments, but others require modern instruments, but others require special innovations to give conformance.special innovations to give conformance.

MIL-L-85762A specifies performance of MIL-L-85762A specifies performance of NVIS compatible displays, but the NVIS compatible displays, but the equipment used in testing conformance equipment used in testing conformance must also meet specifications.must also meet specifications.

Testing equipment must meet ALL of the Testing equipment must meet ALL of the specifications.specifications.

Some of these specifications are trivial for Some of these specifications are trivial for modern instruments, but others require modern instruments, but others require special innovations to give conformance.special innovations to give conformance.



Testing of NVIS Testing of NVIS compatible compatible

displays to MIL-L-displays to MIL-L-85762A is an 85762A is an

absoluteabsolute requirement for requirement for the USA and is the USA and is

generally adopted generally adopted worldwide. Testing worldwide. Testing

equipment is equipment is specified in specified in Appendix B.Appendix B.

Testing of NVIS Testing of NVIS compatible compatible

displays to MIL-L-displays to MIL-L-85762A is an 85762A is an

absoluteabsolute requirement for requirement for the USA and is the USA and is

generally adopted generally adopted worldwide. Testing worldwide. Testing

equipment is equipment is specified in specified in Appendix B.Appendix B.

APPENDIX B

SPECTRAL RADIANCE, LUMINANCE, AND ILLUMINANCE MEASURING

EQUIPMENT

B10. SCOPE

B10.1 Scope. This appendix details the requirements of the chromaticity, spectral radiance, luminance, and illuminance measurement equipment to be used when performing measurements in accordance with this specification. This Appendix is a mandatory part of this specification. The information contained herein is intended for compliance.

APPENDIX B

SPECTRAL RADIANCE, LUMINANCE, AND ILLUMINANCE MEASURING

EQUIPMENT

B10. SCOPE

B10.1 Scope. This appendix details the requirements of the chromaticity, spectral radiance, luminance, and illuminance measurement equipment to be used when performing measurements in accordance with this specification. This Appendix is a mandatory part of this specification. The information contained herein is intended for compliance.



MIL-L-85762A Appendix B covers the MIL-L-85762A Appendix B covers the requirements of the testing system and requirements of the testing system and calculationscalculations

Appendix Appendix B40B40 covers covers PhotopicPhotopic testing testing equipment equipment

Appendix Appendix B30B30 covers covers spectroradiometricspectroradiometric testing equipmenttesting equipment

MIL-L-85762A Appendix B covers the MIL-L-85762A Appendix B covers the requirements of the testing system and requirements of the testing system and calculationscalculations

Appendix Appendix B40B40 covers covers PhotopicPhotopic testing testing equipment equipment

Appendix Appendix B30B30 covers covers spectroradiometricspectroradiometric testing equipmenttesting equipment

The OL 750-NVG passesALL requirements

of B30 and B40

The OL 750-NVG passesALL requirements

of B30 and B40



To demonstrate To demonstrate conformance, the following conformance, the following

slides will show key slides will show key individual requirements with individual requirements with

actual OL 750-NVG actual OL 750-NVG performance.performance.

To demonstrate To demonstrate conformance, the following conformance, the following

slides will show key slides will show key individual requirements with individual requirements with

actual OL 750-NVG actual OL 750-NVG performance.performance.


GeneralGeneral

B30. SPECTRORADIOMETER

B30.1 Chromaticity and spectral radiance measurement equipment. Chromaticity and spectral radiance measurements shall be made using a spectroradiometer meeting the requirements herein. The following calibrations and checks shall be performed within the time period specified in order to assure that the spectroradiometer meets the requirements of this specification. Records of how the spectroradiometer calibration was performed, when performed and the standard lamp used shall be maintained by the contractor and shall be available for government inspection.

B30. SPECTRORADIOMETER

B30.1 Chromaticity and spectral radiance measurement equipment. Chromaticity and spectral radiance measurements shall be made using a spectroradiometer meeting the requirements herein. The following calibrations and checks shall be performed within the time period specified in order to assure that the spectroradiometer meets the requirements of this specification. Records of how the spectroradiometer calibration was performed, when performed and the standard lamp used shall be maintained by the contractor and shall be available for government inspection.


A spectro-A spectro-radiometer radiometer mustmust be used be used for for chromaticity chromaticity and spectral and spectral radiance radiance measurementsmeasurements

A spectro-A spectro-radiometer radiometer mustmust be used be used for for chromaticity chromaticity and spectral and spectral radiance radiance measurementsmeasurements


SensitivitySensitivity

MIL-L-85762A SPECIFICATIONB30.2 Spectroradiometer sensitivity.

Wavelength Radiance level380 to 600 nm 1.0 x 10-10 W/cm² sr nm600 to 900 nm 1.7 x 10-11 W/cm² sr nm900 to 930 nm 1.0 x 10-10 W/cm² sr nm

B30.2.1 Spectroradiometer sensitivity calibration shall be performed within six months (or more frequently if required to insure the spectroradiometer meets the requirements specified herein) prior to taking a measurement. This calibration shall be traceable to NBS standards. The calibrations shall be performed over the wavelength band and at intervals consistent with the measurements to be made. The calibration shall demonstrate that the spectroradiometer meets the sensitivity requirements of B30.2. A separate calibration must be performed for each set of optics used, or when filters are used in front of the spectroradiometer.

MIL-L-85762A SPECIFICATIONB30.2 Spectroradiometer sensitivity.

Wavelength Radiance level380 to 600 nm 1.0 x 10-10 W/cm² sr nm600 to 900 nm 1.7 x 10-11 W/cm² sr nm900 to 930 nm 1.0 x 10-10 W/cm² sr nm

B30.2.1 Spectroradiometer sensitivity calibration shall be performed within six months (or more frequently if required to insure the spectroradiometer meets the requirements specified herein) prior to taking a measurement. This calibration shall be traceable to NBS standards. The calibrations shall be performed over the wavelength band and at intervals consistent with the measurements to be made. The calibration shall demonstrate that the spectroradiometer meets the sensitivity requirements of B30.2. A separate calibration must be performed for each set of optics used, or when filters are used in front of the spectroradiometer.


MIL-L-85762A Appendix B30.2 sensitivity for OL 750S-NVG

1.00E-14

1.00E-13

1.00E-12

1.00E-11

1.00E-10

1.00E-09

350 400 450 500 550 600 650 700 750 800 850 900 950

Wavelength [nm]

10:1

RM

S s

ensi

tivi

ty [

W/(

cm²

nm

)]

0.178 mm

0.3 mm

0.67 mm

1.67 mm

3 mm

MIL spec

Spot Diameter

MIL-L-85762A Appendix B30.2 sensitivity for OL 750S-NVG

1.00E-14

1.00E-13

1.00E-12

1.00E-11

1.00E-10

1.00E-09

350 400 450 500 550 600 650 700 750 800 850 900 950

Wavelength [nm]

10:1

RM

S s

ensi

tivi

ty [

W/(

cm²

nm

)]

0.178 mm

0.3 mm

0.67 mm

1.67 mm

3 mm

MIL spec

Spot Diameter


LinearityLinearity

B30.6 Linearity.Within any given measurement scale, the linearity shall be ±1% of the full scale value. The linearity between any two measurement scales shall be ± 2%.B30.6.1 Linearity verificationThe linearity of the spectroradiometer shall be verified within 6 months prior to taking a measurement. A linearity check shall be performed on each detector used during the test procedures. The spectroradiometer operational parameters shall not be varied during the linearity test. The linearity check shall be performed at a specific wavelength (to be determined by the contractor) which shall not be varied during the linearity test. A light source which can be precisely, mechanically or optically varied in intensity shall be used for the linearity check. Acceptable methods that may be used to vary the intensity of the light source include the use of neutral density filters (with known transmission), precision apertures, superposition, or the inverse square law (provided the distance between the lamp and spectroradiometer can be precisely controlled using a photometric type bench). Dimming of the lamp through electronic means is unacceptable. The intensity of the lamp shall be adjusted to give a full scale reading on the lowest level of dynamic range of the spectroradiometer. Call the lamp output N and the reading on the spectroradiometer R. The intensity of the lamp shall be varied in accordance with the table below, and, in order to pass the linearity check the output of the spectroradiometer, over its entire dynamic range (as applicable) shall be within the limits shown below.

Lamp Output Spectroradiometer Output Lamp Output Spectroradiometer Output0.1N 0.1R ± .01R 100 N 100 R ± 2.0 R0.5 N 0.5 R ± .01 R 500 N 500 R ± 20 R5 N 5.0 R ± 0.2 R 1000 N 1000 R ± 20 R10 N 10 R ± 0.2 R 5000 N 5000 R ± 200 R50 N 50 R ± 2.0 R 10000 N 10000 R ± 200 R

B30.6 Linearity.Within any given measurement scale, the linearity shall be ±1% of the full scale value. The linearity between any two measurement scales shall be ± 2%.B30.6.1 Linearity verificationThe linearity of the spectroradiometer shall be verified within 6 months prior to taking a measurement. A linearity check shall be performed on each detector used during the test procedures. The spectroradiometer operational parameters shall not be varied during the linearity test. The linearity check shall be performed at a specific wavelength (to be determined by the contractor) which shall not be varied during the linearity test. A light source which can be precisely, mechanically or optically varied in intensity shall be used for the linearity check. Acceptable methods that may be used to vary the intensity of the light source include the use of neutral density filters (with known transmission), precision apertures, superposition, or the inverse square law (provided the distance between the lamp and spectroradiometer can be precisely controlled using a photometric type bench). Dimming of the lamp through electronic means is unacceptable. The intensity of the lamp shall be adjusted to give a full scale reading on the lowest level of dynamic range of the spectroradiometer. Call the lamp output N and the reading on the spectroradiometer R. The intensity of the lamp shall be varied in accordance with the table below, and, in order to pass the linearity check the output of the spectroradiometer, over its entire dynamic range (as applicable) shall be within the limits shown below.

Lamp Output Spectroradiometer Output Lamp Output Spectroradiometer Output0.1N 0.1R ± .01R 100 N 100 R ± 2.0 R0.5 N 0.5 R ± .01 R 500 N 500 R ± 20 R5 N 5.0 R ± 0.2 R 1000 N 1000 R ± 20 R10 N 10 R ± 0.2 R 5000 N 5000 R ± 200 R50 N 50 R ± 2.0 R 10000 N 10000 R ± 200 R

Linearity Error Test to MIL-L-85762A B30.6 over 8 decades

-10

-5

0

5

10

1.0E-01 1.0E+00 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 1.0E+07

Lamp Intensity [arbitrary units]

% L

inea

rity

Err

or

MIL Spec.

MIL Spec.

Linearity Error Test to MIL-L-85762A B30.6 over 8 decades

-10

-5

0

5

10

1.0E-01 1.0E+00 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 1.0E+07

Lamp Intensity [arbitrary units]

% L

inea

rity

Err

or

MIL Spec.

MIL Spec.



Viewing SystemViewing System


The viewing system is specified in many sections of MIL-L-85762A Appendix B, and essentially describes the performance of the telescope used to align devices prior to

measurements. To summarize:

B30.9 and B40.2.1 and B40.4 Measurement of a 0.007" spot is available.B30.10 Max. View/Measure alignment error of 5%.B40.5 Max. View/Measure alignment error of 0.002".B40.4 Minimum focal distance of 4".

The viewing system is specified in many sections of MIL-L-85762A Appendix B, and essentially describes the performance of the telescope used to align devices prior to

measurements. To summarize:

B30.9 and B40.2.1 and B40.4 Measurement of a 0.007" spot is available.B30.10 Max. View/Measure alignment error of 5%.B40.5 Max. View/Measure alignment error of 0.002".B40.4 Minimum focal distance of 4".

The OL 600-NVGtelescope meets

ALL of these specifications

The OL 600-NVGtelescope meets

ALL of these specifications


Luminance MeasurementEquipment

Luminance MeasurementEquipment

B40.1 Luminance measurement equipment.

Luminance measurements can be made using either a spectroradiometer meeting the requirements of B30 through B30.11.1 above or a photometer meeting the requirement herein. When a photometer is used as part of the test equipment, the following calibrations and checks shall be verified within a year prior to taking a measurement in order to assure that the photometer meets the requirements of this specification. Records of calibrations and checks shall be maintained by the contractor and shall be available for government inspection.

B40.1 Luminance measurement equipment.

Luminance measurements can be made using either a spectroradiometer meeting the requirements of B30 through B30.11.1 above or a photometer meeting the requirement herein. When a photometer is used as part of the test equipment, the following calibrations and checks shall be verified within a year prior to taking a measurement in order to assure that the photometer meets the requirements of this specification. Records of calibrations and checks shall be maintained by the contractor and shall be available for government inspection.


OL 750-NVGspectroradiometer

OL 600-NVG-Pphotometer

Measure both wayswith ONE system

Measure both wayswith ONE system


Photometer PolarizationError

Photometer PolarizationError


B40.6 Photometer polarization error.The polarization error shall be no greater than 1%

NOTEThis specification is actually in the wrong section. Photometers rarely show polarization errors, but

spectroradiometers are generally highly sensitive to polarization. Proper luminance (and radiance)

measurements with spectroradiometers can only be done if de-polarization optics are added.

B40.6 Photometer polarization error.The polarization error shall be no greater than 1%

NOTEThis specification is actually in the wrong section. Photometers rarely show polarization errors, but

spectroradiometers are generally highly sensitive to polarization. Proper luminance (and radiance)

measurements with spectroradiometers can only be done if de-polarization optics are added.

Measure LCD and AMLCDDisplays without error

Measure LCD and AMLCDDisplays without error

OL 750-NVGspectroradiometer

OL 600-NVG-Pphotometer


Beyond MIL-L-85762ABeyond MIL-L-85762ABeyond MIL-L-85762ABeyond MIL-L-85762A

Dynamic rangeThe brightest intensity measurable

divided by the lowest (without changing the conditions of testing).

Dynamic rangeThe brightest intensity measurable

divided by the lowest (without changing the conditions of testing).



There is no specification for dynamic range,

but….MIL-L-85762A implies that the

sensitivity specification applies at all luminances

There is no specification for dynamic range,

but….MIL-L-85762A implies that the

sensitivity specification applies at all luminances

PMTs have very limited dynamic range so most systems must

ignoreMIL-L-85762A sensitivity specifications when testing sources brighter than 1 fL

PMTs have very limited dynamic range so most systems must

ignoreMIL-L-85762A sensitivity specifications when testing sources brighter than 1 fL


The OL 750-NVGfeatures 10 decadesof dynamic range

for each measurement,so bright sources can be measured while meeting

MIL-L-85762A sensitivity specifications.

The OL 750-NVGfeatures 10 decadesof dynamic range

for each measurement,so bright sources can be measured while meeting

MIL-L-85762A sensitivity specifications.



Scan SpeedScan Speed


There are no high There are no high or low scan speed or low scan speed limitations limitations specified, but specified, but faster is preferred.faster is preferred.The OL 750-NVG The OL 750-NVG can give quality can give quality NVIS results in 2 NVIS results in 2 minutes or less.minutes or less.

There are no high There are no high or low scan speed or low scan speed limitations limitations specified, but specified, but faster is preferred.faster is preferred.The OL 750-NVG The OL 750-NVG can give quality can give quality NVIS results in 2 NVIS results in 2 minutes or less.minutes or less.

1E-14

1E-13

1E-12

1E-11

1E-10

1E-9

1E-8

1E-7

1E-6

1E-5

Sp

ectr

al

Ra

dia

nce [

W/c

m²

nm

sr]

300 400 500 600 700 800 900 1000

Wavelength [nm]

0.14 fL source 109 fL source special "IR" source

1E-14

1E-13

1E-12

1E-11

1E-10

1E-9

1E-8

1E-7

1E-6

1E-5

Sp

ectr

al

Ra

dia

nce [

W/c

m²

nm

sr]

300 400 500 600 700 800 900 1000

Wavelength [nm]

0.14 fL source 109 fL source special "IR" source


Special FeaturesSpecial Features Special FeaturesSpecial Features

Sometimes, Sometimes, when testing when testing cockpit displays, cockpit displays, you need to you need to climb into a climb into a cockpitcockpit

Sometimes, Sometimes, when testing when testing cockpit displays, cockpit displays, you need to you need to climb into a climb into a cockpitcockpit

With a fiber-optic cable, you can make

measurements anywhere with the OL 750-NVG

With a fiber-optic cable, you can make

measurements anywhere with the OL 750-NVG

Remove the OL 600-NVG base to reveal a

tripod mounting thread

Remove the OL 600-NVG base to reveal a

tripod mounting thread

The supplied baffle-tube is ideal for quick focus and low stray light, just place the end against the

cockpit display

The supplied baffle-tube is ideal for quick focus and low stray light, just place the end against the

cockpit display


OL 750 software is

fully Windows 95/98/NTTM compatible

OL 750 software is

fully Windows 95/98/NTTM compatible

Special FeaturesSpecial Features Special FeaturesSpecial Features

Multi-Spectral

plots

Multi-Spectral

plots

CIEPlots

&reports

CIEPlots

&reports

Multiple browsers for easy

storage & retrieval

Multiple browsers for easy

storage & retrieval

MIL-spec & custom Pass/Fail

MIL-spec & custom Pass/Fail


Special FeaturesSpecial FeaturesSpecial FeaturesSpecial Features

Scan wizard makes calibrations and Scan wizard makes calibrations and measurements easy for any usermeasurements easy for any user

Calculations according to MIL-L-Calculations according to MIL-L-85762A85762A

Users can add customer/vendor Users can add customer/vendor specificationsspecifications

NVIS conformance reports with NVIS conformance reports with choice of layoutchoice of layout

Scan wizard makes calibrations and Scan wizard makes calibrations and measurements easy for any usermeasurements easy for any user

Calculations according to MIL-L-Calculations according to MIL-L-85762A85762A

Users can add customer/vendor Users can add customer/vendor specificationsspecifications

NVIS conformance reports with NVIS conformance reports with choice of layoutchoice of layout


Special FeaturesSpecial FeaturesSpecial FeaturesSpecial Features

Many other useful built-in color Many other useful built-in color calculations: LAB/LUV, CRI etccalculations: LAB/LUV, CRI etc

Powerful Macro facility for user Powerful Macro facility for user manipulations using equation editormanipulations using equation editor

Radiometer/photometer software is Radiometer/photometer software is built-in to OL 750 spectroradiometer built-in to OL 750 spectroradiometer software – no switching programssoftware – no switching programs

Many other useful built-in color Many other useful built-in color calculations: LAB/LUV, CRI etccalculations: LAB/LUV, CRI etc

Powerful Macro facility for user Powerful Macro facility for user manipulations using equation editormanipulations using equation editor

Radiometer/photometer software is Radiometer/photometer software is built-in to OL 750 spectroradiometer built-in to OL 750 spectroradiometer software – no switching programssoftware – no switching programs

The list of special features goes on and

on…

The list of special features goes on and

on…


More InformationMore InformationMore InformationMore Information

The features illustrated represent The features illustrated represent just a few of the main benefits of the just a few of the main benefits of the OL 750-NVG systemOL 750-NVG system

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 features illustrated represent The features illustrated represent just a few of the main benefits of the just a few of the main benefits of the OL 750-NVG systemOL 750-NVG system

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

latest advances in spectroradiometric measurement systems for night vision compatible displays...

Documents