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Here are the plans that you need, Sorry but there are NO graphics or photo's available to help assist you in the building of this project. Chris
Here is a link for another persons plan to make one
http://www.angelfire.com/80s/sixmhz/infrared.html
[Introduction]
With the advancement of technology the cost of
building infrared viewers have come down considerable since they were first used during the Korean Conflict.
The following plans show how to construct a device
capable of allowing one to see in total darkness. It can be used to view a subject for recognition or
evidence gathering reasons without any indication
that he is under surveillance. Many uses such as detection, alignment of IR alarms, lasers
communication systems and other IR sources make it an incalculable device in
these fields. Detecting diseased vegetation in
certain types of crops from the air, an aid to nighttime
varmit hunting as well as viewing high temperature
thermo graphic scenes providing the color temperatures are sufficient.
The unit is built with cost and performance as the
objective. It is as good operationally as units costing 3 to 5 times, yet is lighter and more versatile
than the more expensive ones. The batteries are enclosed into the housing and
do not require side packs, cables, etc. The range and field of viewing are
determined by the intensity of the integrated IR source and viewing angle of
the optics.
The viewing range is determined mainly by the
intensity of the IR source and can be controlled by varying this parameter. A two cell flashlight with an
integrated filter placed over the lens to prevent
the subject from seeing the source. This provides a working range of up to 50' (reliable) and can be
increased to several hundred using a more powerful
source such as a 6 cell flashlight. Needless to say, the builder has total flexibility
in choosing his/her IR source and can adjust the optics to meet his needs.
Example: Long rage quick viewing may utilize a
small 2 cell light with 8 Nicad cells to replace the normal 2 "D" cells providing a significant brighter
IR source yet lasting for less time than the normal "D" cell would. The unit
can also be used with external sources such as a
super intense filtered automobile headlamp extending the range out to four to five hundred feet and
provide a wide field of illumination. Note viewing of active IR sources as
lasers etc., do not require the internal IR
source.
[Theory of Operation]
A subminiature* high voltage power supply provides
approximately 15KV at several micro amperes from a 7 to 9 volt rechargeable NiCad battery. This
voltage
is applied to the (TUB1) with "plus" going to the
viewing end and "negative" to the objective end. A voltage dividing network consisting of resistor R8,
10 and R9 provide electronic focusing via the grid
ring.
An objective lens (LE1) [I used an 80mm - 205mm
zoom lens from a camera] with adjustable focal length gathers the reflective image, illuminating by the IR,
and focuses this image at the objective end of the
tube. Image conversion now takes place inside the tube and is displayed on the viewing to provide subject
identification at a distance to 50' or more-depending on the intensity of the
IR source and quality of optics.
[Construction Steps]
1. Assemble and test the power board. You can us
any type of power supply that can supply a voltage between 15KV and 20KV. It happens I found
it easier to buy a kit rather than to search for the parts separately.
2. Solder R9 between the "focus ring" terminal
[the middle one] and the viewing ring. This must be done quickly
with at least a 40 watt soldering
iron the "glass to metal" seal may be damaged if
allowed to heat up. Note: that the resistor is dressed as show below:
------------
----| R8 |----: You have to remember that high
------------ | voltage can travel through
------------ | air. If the resistors are not
:----| 22M |----: set up properly arcing can
| ------------ occur thus reducing the
| ------------ potential voltage at the
:----| |---- out of the terminals. Also it
------------ make viewing hard.
The +HV lead from the power board is connected to
the viewing ring.
3. Solder R8 between the "objective ring" and the
"focus ring". Note: that the resistor may be a combination of one or several
resistors and it may
be wise just to solder a short piece of buss wire
to the objective ring as a connection point for these possible combination along with the negative
HV lead from the power board. Note: the different
combinations of resistor that may be required. CAUTION! DO NOT SOLDER NEAR THE GLASS SEAL!
4. Obtain some window screen and place it flush
against the objective end of the image tube TUB1. Secure the tube on the bench via modeling clay etc.,
and temporarily connect to the leads from the
power board. Observe proper clearance of leads and
components. Note the tube glowing greenish and an
image of the screen appearing either sharp or
blurred. If image is good and sharp you are in luck. If not resistor R8 must be trimmed by either
adding or reducing until the image of the screen is sharp. This step
electro statically focuses the system. The lab
values were 2000 Meg for R9 and approximately 200 Meg for R8. You may use a combination of 100 and 22
Meg 1/2 Watt carbon resistors or a single 200 Meg
use RTV to further secure the resistors and insulate the HV points against possible corona.
5. Once you have got the IR tube focused you can
now enclose the whole system in what ever enclosure you wish. I used:
Quantity Description
-------- ------------
1 2-1/2 Inches Of PVC-40 tubing
1 5 "
1 8 "
3 2 Inch PVC connector
3 Metal Clamps (pipe clamps)
Diagram: [Not to Scale] Top view
-------: :-------: :-------: /---\ /--------\
| :------------: :---: :-- ------ |
Viewing |Con. : 5" PVC : Con. : 2 : Con. : Zoom
lens |
end | #1 : : #2 :1/2: #3 : LE1 |
(EP1) | :------------: :---: :-- ------ |
-------: :-------: :-------: \---/ \--------/
----------------------------------
| Power Board Enclosure |
| |
----------------------------------
Clamps go around Con. #3 to hold Zoom Lens in
place, around Con. #2 and
Con #3 again to hold Power board enclosure next to
Viewing tube.
You can add whatever else you need to the assembly
to fit your needs.
6. The viewing lens (EP1) goes at the end of the
tube right before Con. #1. The Image tube is squeezed together between the 5" PVC, Con. #2, and the
2-1/2 " PVC piece. It is best that us use a rubber
washer to hold the image tube in place so that it doesn't move around inside the
enclosure.
[Parts List From Infrared Viewer]
Quantity Part # Description
-------- ------ -----------
1 PBK3 Power board assembly 15KV to 20KV power
supply.
Available from Information unlimited.
1 R8 200 Meg resistor (see above reading).
1 R9 2000 Meg resistor (see above reading).
1 TUB1 Selected 6032 Image tube. Available from
IR Scientific.
1 LE1 Lens (Camera Lens seem to work the best).
1 EP1 X 10 eyepiece or whatever works the best.
1 IRF1 Infrared filter for fitting in place of
a light source (flashlight etc.).
1 FLH1 Light source.
It is advisable that you uses high voltage wire in
this project, especially if you intend to enclose it in a small enclosure. This is because due to the
nature of High Voltage it can pass through the
regular insulation which covers low voltage wire. This results in arcing
which is bad because basically
what its doing is shorting out your power supply
which is a no no.
[More Diagrams]
Another way of assembling your viewer.
\----\ _
\ -|B|-------------------------------
IR - | |r| Flashlight |
Filter | |a| |
/ -|c|--------------------------------
/----/ |k|
:-----|e|------------------------------------/
:---: |t| /-- /\ Tub1 -----/
LE1 : |_| | |---||------/\ : | EP1
: | |---||------\/ : | <-
:---: \-- \/ -----\
:--------------------------------------------\
/ /
| |
/ / Power Board Enclosure
| | <----
/ /
| |
/ /
| |
/ /
| |
/ /
|________|
[Where to Get the Parts]
Information Unlimited Sells A Power Board Assembly*
Kit which will work with
this project. There address is:
Information Unlimited
P.O. Box 716
Amherst, New Hampshire
03031
PBK3 - SUB MINI 20,000 VOLT POWER MODULE
PBK3 Plans..................... $7.00
PBK3K KIT/PLAN.................. $44.50
PBK30 ASSEMBLED & TESTED........ $59.50
The* Toll Free Order Number is 800-221-1705
8 AM - 4 PM Eastern Time.
For Information & Assistance and to place orders
after hours: 603-673-4730.
IR Scientific Inc. sell the 6032 Infrared
converter Tube which is used in this
project. Their address is:
IR Scientific Inc.
Box 110
Carlisle, Massachusetts
01741
You can call them at 607-369-7118
6032 Infrared Image Converter Tube, it costs
$67.50.
You should use 100 Meg resistors to make up your
resistor network. I suggest that you go to an electronic surplus store to get these, there not easy to
find.
If you decide to try and make your own power
supply RCA builds high voltage diodes you could use. Check out their cross reference manual, they have
diagrams showing how to make voltage multipliers.
You can get an IR filter from you local camera
store at this time I believe that you can get 3 square inches of
gelatin IR filter for about 10 dollars.
But if you really want a good filter, the ones
made out of glass, it can run you anywhere from 60 to 100 dollars just for the filter.
[Warning]
Unless you are competent in building projects I
don't suggest that you try building this project. It can cost a lot of money if you have to keep
replacing components. If you still want an IR
viewer see below for places to purchase them.
& Please Don't Email Us At OLP For Help, We are NOT
Competent Enough In trying to help build something like this. Sorry :( Just
Being Honest, I know My Limitations. This is way beyond my know how.
Also a lot of states have made it illegal to have
IR viewer so check with local authorities to learn the law on the procession of one, then buy one.
[Places Which Sell IR Viewers]
If your lucky you may be able to pick one up at an
army surplus store. I've seen a couple and there very nice. There about the size of a pair of
binoculars. Buy one of these if you find one. Cost: unknown.
Information unlimited sells some.
GVP1 - General Purpose Viewer $299.50
LRV1 - Long-Range Viewer $750.00
HLR1 - High Power 200K Candle Power $139.50
IR Source
I believe that IR Scientific sells some, but I'm
not Sure.
The Electronic Supermarket sells some.
The Electronic Super Market
P.O. Box 988 Lynnfield, M.A.
01940
Phone (617)-532-2323
IR Eye Infrae* Viewers Model ELT ( 3VL0144p)
$299.00
" Model ELC ( 3VL0145p) $299.00
Infrared Views Kit (R3VL0153p) $199.00
Instrutio* Manual ( 3VL0154p) $ 10.00
Long Range Infrared Viewer (85VL0376p) $729.95
Long Range Infrared Source (85VL0382p) $129.95
There are lot of other places that sell this type
of stuff you just have to look around.
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