© Brooke Clarke 2020 - 2021
Micron 80 Series
Kodak Ektron P-2
To compliment the pages on Optics
Micron 80 Series Infrared
Keikhosrow Irani founded Micron
Infrared in 1969. LumaSense Technologies acquired
them, and Advanced
Energy Industries (Pyrometers)
is the current holder.
Got this for a good price on eBay probably because
the two 9V batteries in the handle have gone bad.
The manual says an alternate to the Ni-Cad is a regular
Alkaline 9V battery. It's now behaving as it should,
but I question the calibration. The indoor readings,
with emissivity set to 99, varies from 75 to 83, so assuming
In Fig 2 you can see small holes at the bottom of the panel
marked "S" and "Z". I'm guessing Scale and Zero.
There is no label on this device and the manual mentions
just under a dozen different models in the 80 series with
different view angles and working distances. So a
little experimentation will be needed to figure out the
object size and distance relationship so that a black body
can be used to set Zero and Scale.
The manual mentions in a number of places of using a
thermocouple to measure the surface temperature of a target
that has an emissivity of 1 in order to determine the
emissivity of a material at a test temperature. Note
the patents below are just some related to thermocouples by
Irani who has patents on the Mikron device.
Table made by guessing based on spot size v. distance data.
The manual does not list the models in the 80 series and
does not say what temperature range they have.
|AT, BT, ET
|A, B, E
Probably necessary to remove the screw just below the rear
panel so get good access. There's also a F or C switch
hidden behind the panel.
I suspect that the actual temperature sensing element is a
thermocouple since many of the Mikron Infarred patents
relate to them.
- heat causes the generation of a voltage because of
the differences of two metal alloys. See: DMM Accessories: 80BK-A
- Resistance change with electromagnetic radiation
(HP power meter standard)
- measures surface temperature from a distance, See:
- Resistance change with temperature (negative and
nonlinear), See: Sensors\Temperature\Thermistor
|Fig 1 Parabolic mirror with sensor at
The IR window material seems like a thin rubber
It passes visible light so probably is not any kind
Maybe there just to keep dust out?
The lanyard can be removed
revealing a 1/4-20 tripod mounting hole.
Electrical jack is one degree per mV output.
S Walter, Thermo
Electric Co, 1961-08-22, 439/687; 136/235 -
This may be the first patent on what has become the
modern standard thermocouple connector.
Note the plug pins are round in this version.
Prior connectors had 2 pins and a cylindrical body.
That wastes a lot of space.
Plug-jack connector, Stephen
L Klassen, Thermo
Electric Co, 1966-09-13, 439/687; 439/691; 439/679 -
Here is the version with flat terminals which are a
lot lower cost than machined round terminals.
Also the plastic housing is now the same for both
male and female versions.
Linearized thermocouples measuring circuit, Keikhosrow
Electric Co, App: 1967-06-30, Pub: 1969-10-14, 374/172;
374/179; 374/E7.015 - Iron-Constantan"J" &
Chromel-Alumel first order correction of arching curve to
straight line. The method can be used for other
thermocouples that have first order curvature.
Infrared Transducer-Transmitter for Non-contact temperature
Irani, F. Lakes, M.G.
Inst Co., 1985-06-09, 356/43; 374/128; 374/133 -
Thermal imaging combination and method, Keikhosrow
Infrared, 2004-09-28, 359/809; 312/223.1; 348/E5.09;
359/722; 374/130 - wide angle IR lens for
inspecting electrical panels through a small hole.
Method for adapting an existing thermal imaging device, Keikhosrow
Infrared, 2008-03-25, 250/339.02 -
When worn on a Ghillie Suit (Wiki)
it blocks the heat from your body, thus providing some IR
Runs on a coupe of AAA batteries. Positive up near
hinge, Negative far from hinge.
There are three settings accessed after pressing "O"
button for a couple of seconds.
|Face or House
|Body Temp or Object
|On or Off
|C or F
I don't yet trust the readings. Need to come up
with a home calibration method.
The LCD background color is always green, even when the
temp is > 40 C.
Kodak Ektron P-2
These are Lead Sulfide (Wiki: PbS)
IR Detectors. From "Characteristics
of Kodak Ektron Detectors" by S.H. Duffield, 1952
A high sensitivity, chemically deposited, lead sulfide
detector has been developed under a program sponsored by the
Bureau of Ordnance, Department of the Navy. The end product
of this development has been declassified and the commercial
production of these units under the trade name of Kodak
Ektron Detectors has been initiated.
1. High sensitivity: 10-4 Volts/microwatt 500
degree K radiation per sq cm
2. Low noise: 3 x 10-7 Volts for a 20 cycle
3. Time constant sufficiently short to give excellent
response up to 800 cycles.
4. Useful spectral response from 0.3 to 3.0 microns at room
temperature with an increase in the near infrared on
cooling. The peak response lies in the 2 micron
5. Impedance range of 1/4 to 3/4 Meg per square, or 10 to
0.01 Meg depending on electrode configuration.
6. Sensitive areas from 0.25 square mm to several square cm
in nearly any shape or multiple array.
Energy Distribution in Luminescence Spectra of Organic
ONR, 1952 - Prank E. E. Germann - describes the equipment
used including the Kodak IR sensor - chlorophyll -
Why? This is a couple decades prior to
Chemiluminescent (patent: 3511612)
Lead sulfide photocell for temperature detection or
monitoring devices, FRITZ MICHELSSEN DR, App: 1936-04-25,
W.W.II, Pub:1953-09-28, -
Infrared-responsive phosphors, Gorton
R Fonda, GE,
App: 1943-11-04, W.W.II, Pub: 1948-08-17, - Metascope
charged by UV. 1 to 1.6 micron.
Photocell of lead sulfide, Robert
J Cashman, Northwestern
University, App: 1945-08-01, W.W.II, Pub: 1948-09-07,
- in glass bulb, claims first commercial IR sensor.
Anticollision apparatus, Robert
J Herbold, Lafayette
M. Huges, App: 1946-06-25, Pub: 1949-11-22, - aircraft
warning when IR seen straight ahead.
Electron device with semiconductive target, Edmund
S Rittner, Philips
Lab, 1951-02-06, - glass bulb
Photoconductive cell, Norman
C Anderson, Fireye Inc, 1953-04-21, - flame detection
Infrared analyzer, Otto
G Koppius, Philips
Lab, 1953-08-25, - uses PbS IR detector
Apparatus and method for making a photoconductive element, Norman
C Anderson, Continental
Electric, 1953-11-17, - hi volume vacuum type type
Photoconductive cell, Norman
C Anderson, Philip
N Bredesen, Phillip
J Cade, Combustion
Control Corp, 1954-04-06, -
Lead sulfide photoconductive cell, Norman
C Anderson, Burton
E Shaw, Electronics Corp, 1955-06-21, - construction
similar to the P-2, not in glass bulb.
Photoconductive cells and process for manufacturing same, Stanley
H Duffield, Eastman
Kodak, 1958-09-16, -
Apparatus for detecting sources of infra-red rays, Menke
Joseph Ferdinand, Doerpinghaus
Ernst Hans, Brinro
Ltd S A, 1961-03-21, - cigarette pack sized IR
Method of and means for horizon stabilization, Lovoff
Adolph, 1961-09-05, - PbS sensing cell to "see" the
Infra-red-sensitive mosaic, Fay
E Null, William
D Adams, App: 1946-08-19, W.W.II, Pub: 1961-09-05, -
Infrared lens cement, Donald
S Cary, William
F Parsons, Carnall
App: 1952-12-06, SECRET,
Pub: 1964-11-17, -
My best guess is these were made in high volume for an
application like an IR light meter.
of infrared detectors, A. ROGALSKI, 2012 -
|The packaging seems to be specific
for a variable resistance light sensor.
Outer envelope with notch for thumb pull.
Inner tri-fold holder for the sensors.
Sensors mounted on double-sided tape with very fine
leads on carrier paper that is notched and has
Holes on 140mm centers, 3.3mm dia.
A single sensor measured 261 k Ohms inside.
Outside in the Sun 90 k Ohms (4:43 pm 2021 July 2 @
PS the very fine wire bonded to the gold plated
glass are very easy to break.
Electro-optical device, George
A Morton, RCA,1940-02-06,
- electron focusing
Infra red image tube, George
A Morton, RCA,
App: 1947-04-09, Top Secret, Pub: 1961-12-19, -
Two-colour radiation ratio pyrometer, Barry
Portland Cement Manf, 1969-07-08, 374/125;
250/394; 374/127; 374/181; 250/214SG; 356/45; 374/168 -
to help with unknown emissivity (Wiki).
Infrared detection tube, Jacob
J. Keyes, MIT,
App: 1964-09-21, Secret, Pub: 1976-04-13, - long wave IR
Radiation sensitive devices, Eric
M Wormser, Barnes
Eng, 1961-05-09, 338/18 - ground and polished oxides of
manganese, nickel and perhaps cobalt thermistor flakes, thallium bromide iodide IR
Infrared telethermometer, Robert
W Astheimer, Current Assignee Edo Corp Barnes
Eng, 1964-06-16, 250/339.04; 359/891; 374/127; 356/43
- RM-2 Radiometric Microscope InSb? (we had one of these at
Aertech). [Barnes: PEAC
Photoelectric autocollimator: little info]
10 Hz IR Avalanche Pulser
- for use with beam breaker or as test source
China Lake Patents -
includes proximity fuze based on both radio and optical
Electro Optical Gadgets - includes IR
pulse sender and receiver
Exotech 100BX Radiometer
- multi-spectral filters on four channels
Flashlight Patents -
includes Surefire & other weapon lights
that have IR modes
Fire - emits near and long wave IR
GVS-5 Laser Infrared Observation Device
MX-9838/GVS-5 - laser
rangefinder using IR (1064 nm)
Haiku Ceiling Fan by Big Ass Fans -
includes info on IR remote.
Hilger & Watts
Spectrometer D 186.3/290 - used for early physics
- includes optical sensor electronics working in log mode for
very high dynamic range
IR Beacons - fit on top of
a 9V battery
IR Photo Transistor Sensor
M18 IR Binocular -
Vietnam era near IR
M-227 Signal Lamp Equipment SE-11 -5
"D" cell flashlight, includes near IR filter
M32 Tank IR Gun Sight - near IR,
Modular Outdoor Intrusion Detectors -
includes IR beam breaker
Optics - many aspects
Optical Spectrum Analyzers: Monolight, Besler, Wollensak, Ocean Optics, Spectronic, Welch,
PAS-6 Varo Metascope Model 9902E
- near IR source and viewer
Pyrometer Ircon DN-DNS30-20C
- (Wiki: Pyrometer)
Optical viewing diode electrical sensing. - Wien's displacement law (Wiki), emissivity (Wiki), 0.7 to 1.9 um wavelength Silicon
sensor, very small spot size.
Hughes Probeye Infrared Thermal Viewer
- thermal viewer, requires high pressure gas for cooling
SDU-5/E Marker Distress Light -
strobe lamp includes a lot of near IR + Near IR filter optioin
Seansors - all types including IR
Sperti Ultra Violet and
Infra-Red Sun Lamps -
Thermal Hand Held Imager DFOV
- large crystal IR lens, requires high pressure gas for
TSL267 IR to Voltage
TVS-2B Night Vision Scope MX-7794B, Crew
Served Weapon Night Sight - works in near IR as well as
AN/UAS-4 Infrared Surveillance System
- thermal and near IR, multi-spectral filters
- the other invisible light
US Navy Infrared
Signaling Telescope US/C-3 - W.W.II near IR sensor
VVS-2(V)4 Driver's Night Vision Viewer
- advanced low light and near IR viewer.
Weston Model 594 Photronic
Cell, Weston 603, 614, 615, 617, 650, 703, 715, 756, 819
& others - about visible light, but a little near IR
QFI: Quantum Focus Instruments Corporation was founded
in 1997 as a spin-off from EDO/Barnes Engineering. EDO/Barnes
was a well-known pioneer in IR detectors and systems (first
infrared microscope 1963), as well as in the field of
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