Lahoux Optics Horus User manual

Lahoux Horus
Multifunctional Thermal Imaging Camera
User manual

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Contents
1 Overview .............................................................................................................. 4
1.1 Features ...........................................................................................................4
1.2 Scope of delivery .............................................................................................4
2 Operation instructions ........................................................................................ 5
2.1 First time use ...................................................................................................5
2.2 (Re)placing battery ..........................................................................................5
2.3 Setting focus....................................................................................................6
2.4 Button operation ..............................................................................................6
2.5 Switching on/off ...............................................................................................7
2.6 Performing a non-uniformity correction (NUC) ............................................... 7
2.7 Changing the colour palette............................................................................ 8
2.8 Using digital zoom........................................................................................... 9
2.9 Entering and leaving the menu .......................................................................9
3 Mounting instructions ....................................................................................... 10
3.1 Using the mounting thread............................................................................10
3.2 Mounting the Lahoux HORUS with an AD-545-X adapter.............................10
3.3 Adjusting the AD-545-X adapter....................................................................11
4 Menu .................................................................................................................. 12
4.1 Lahoux HORUS button operation within the menu.......................................12
4.2 Menu structure tree........................................................................................12
4.3 Basic menu structure..................................................................................... 13
4.4 Advanced menu structure .............................................................................13
4.5 Battery saving menu...................................................................................... 14
4.6 Boresight adjustment menu ..........................................................................14
4.7 Information menu...........................................................................................15
5 Storage and maintenance................................................................................. 16
5.1 General storage guidelines ...........................................................................16
5.2 Cleaning the Lahoux Horus...........................................................................16
5.3 Cleaning the optics........................................................................................16
6 Troubleshooting guide ...................................................................................... 17
7 Specifications.................................................................................................... 19
7.1 Typical range performance............................................................................ 19
7.2 Technical specifications.................................................................................19
7.3 Mechanical dimensions.................................................................................20
8 Customer Support............................................................................................. 21

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Notes
The user manual details the use of the Lahoux HORUS and the pre-
cautions for its use. For the protection of the operators safety, as well
as the reasonable and effective maintenance and use of the Lahoux
HORUS, and also to guarantee the normal service life of the Lahoux
HORUS, the company requires the user to read and strictly abide by
the requirements of the following operating specifications before using
the Lahoux HORUS.
The use and maintenance of the Lahoux HORUS should be subject
to the supplied user manual only. Other materials are for reference
purposes only..
If you experience any problems during the use of the Lahoux HORUS,
first check chapter 6 (Troubleshooting) and then contact your point
of sale or Lahoux Optics technical support as soon as possible. See
chapter 8 (Customer support).

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Precautions
• Protect the Lahoux HORUS from direct sunlight and extreme heat. Do not leave the
Lahoux HORUS unprotected in a car;
• The Lahoux HORUS combines sophisticated optical instruments and electrosta-
tic-sensitive electronic equipment, Prevent unnecessary mechanical loads that can
cause deformation or damage.
• Do not disassemble the Lahoux HORUS by yourself, in the event of a malfunction,
which cannot be solved with the help of the operating instructions, please contact
the Lahoux Optics service department. Unauthorised disassembly will lead to an
irrevocably expiration of the warranty.
• When the Lahoux HORUS is not in use for a longer period or during transportation,
please remove the battery. Place the Lahoux HORUS in the supplied pouch or
original box;
• Please replace the battery in time when the battery power is too low, to avoid
• over-discharge damage to the battery;
• Using the Lahoux HORUS in an environment that is beyond the limitations mentio-
ned in this user manual may cause damage to the Lahoux HORUS.
Attention
• Before the first use please check if the scope of delivery is complete. Should parts
be missing, please report this to your point of purchase immediately.
• Do not dispose the Lahoux HORUS in regular waste. The device can be returned
for recycling to the point of purchase or a local recycling point.

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1 Overview
The Lahoux HORUS is a is lightweight and compact thermal imaging camera. It is
fully designed, manufactured and assembled by Lahoux Optics in the Netherlands.
The working principle of the Lahoux HORUS is as follows: infrared radiation is
focused on the sensor array by the objective lens and electronically converted into a
digital image. This image is processed and displayed on the OLED screen.
1.1 Features
• Next generation 12µm VOx thermal sensor. The best performance in the smallest
size.
• Intuitive and simple operation. No unnecessary distraction from your hunting
experience.
• High magnification optics. Optimized for use with primary optics, magnification
over 10x is possible.
• Ergonomically, rear mounted focus knob. Stay conveniently in position without
disturbing your surroundings.
• Fast zoom. The three times zoom, only active while pressing the button, keeps
your focus on the zoomed area.
• Ultra-long battery lifetime. No unexpected shut down because of limited battery
capacity.
1.2 Scope of delivery
• Lahoux HORUS thermal front attachment
• 18650 3.7V 3400mAh rechargeable Li-ion battery
• Battery charger
• Wall wart USB adapter 110-240V to 5V at 1A
• USB charging cable
• Pouch
• User manual
• Lens tissue

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2 Operation instructions
2.1 First time use
Make sure the battery is charged. The battery can be placed both ways. The polarity
is automatically detected and corrected.
1. Place the battery into the battery compartment.
2. Screw the battery cap on the battery compartment thread until firm.
3. Hold the Power/NUC button until the Lahoux HORUS switches on.
4. Remove the lens cap. Adjust the rear mounted focus knob if objects appear blurred
or unclear.
2.2 (Re)placing battery
To replace the battery, unscrew the battery cap. Remove the old battery. Make sure
the new battery is charged, and place it into the battery compartment. Screw the
battery cap on the battery compartment thread until firm.
The Lahoux HORUS uses only one type of battery.
• A protected 18650 3.7V Li-ion battery, as supplied with the Lahoux HORUS.
• You can use another battery with more or less capacity. The run time will change.
Note: A so called “unprotected 18650” battery will have a slightly reduced length,
and may therefore cause interruptions in operation when the Lahoux HORUS is
subjected to vibrations or shock. The length of the battery should be in the 68.5 –
70mm range.
Note: The Lahoux HORUS has an internal over-voltage protection to prevent dam-
age from incorrect battery types or faulty USB adapters. The over-voltage protection
activates automatically if the voltages exceeds 5.5 volt. For this reason, the Lahoux
HORUS will not operate when two CR123A batteries are being used.

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2.3 Setting focus
Should the image appears blurry or unsharp, use the focus knob to set the focus
correctly. The focus range spans at least 10 meters to infinity.
For typical use it is recommended to set the focus at about 100 meters, which will
yield an acceptable focus from 30 meter to infinity without refocussing.
Caution
The focus knob has a mechanical stop at the end of travel. Do not force the
focus knob beyond this mechanical stop, as this may damage the focussing
mechanism!
2.4 Button operation
Power/NUC Color Zoom
Short Press Perform NUC Change color palette -
Hold Shut down Enter/leave menu Digital zoom 3x
Light sensor Indicator
Focus
Colour ZoomPower/NUC

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2.5 Switching on/off
The Lahoux HORUS can be switched on or off by holding the Power/NUC button for
1.5 seconds. When using a menu, this has to be exited before the Lahoux HORUS
can be switched off.
Note: When switching the Lahoux HORUS on with the shutter set to ‘external’, leave
the lens cap on the objective lens until start-up has finished.
2.6 Performing a non-uniformity correction (NUC)
During start-up and after some time of use, there will be a temperature difference
over the sensor array. This difference will lead to a non-uniformity in the image. This is
often perceived as a dark or light circle in the center image, or vignetting around the
corners. This is normal thermal system behaviour, and can be corrected by perform-
ing a non-uniformity correction (NUC). The Lahoux HORUS offers three NUC options
in the basic menu.
• Auto
When set to Auto, the Lahoux HORUS will calculate when a NUC is required on
basis of temperature difference or time interval. No user input is required. This
mode will at seemingly random moments briefly freeze the image each time a NUC
is performed. Therefore this mode is only recommended when the Lahoux HORUS
is used for observation.
• Manual
The Manual mode is preferred if an uninterrupted video stream is required. The
NUC has to be manually triggered by pressing the Power/NUC button. This mode
is best suited for hunting applications.
• External
The External NUC offers the best results when the Lahoux HORUS is subjected to
strong winds or adverse weather conditions. This mode corrects both the sensor
array non-uniformity as well as temperature gradients in the objective lens. The
manual NUC mode requires covering of the objective lens.
An external NUC is performed by the following procedure.
1. Place the lens cap on the objective lens.
2. Assure the Lahoux HORUS is not currently displaying a menu. If necessary, leave
any menu by holding the Color button.
3. Press the Power/NUC button. This initiates the non-uniformity correction.
4. Remove the lens cap and resume normal operation.
Note: If both hands are free, the objective lens can alternatively also be covered com-
pletely with the full palm of one hand while performing an external NUC.

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2.7 Changing the colour palette
The Lahoux HORUS is equipped with various colour palettes to enhance the image
for any given circumstance. Briefly press the Colour button to cycle through the vari-
ous colour palettes. The following colour palettes are available.
Palette Description
White hot Standard black/white palette for thermal
cameras. Good level of detail in a grey
scale and good detection capabilities for
hot sources.
Black hot Inversed black/white palette for a more
natural appearance of scene. This gives
an enhanced image during very cold or
freezing weather circumstances and a
clearly visible outline of an object.
Hotspot Standard black/white palette with hottest
parts coloured in a red to yellow gradient.
This palette offers enhanced detection of
hot sources.
Colour Coloured palette with enhanced contrast
between hottest and coldest parts of the
scene.
Contrast Colored palette with very sharp temperature
contrast. This palette offers an enhanced
image in very adverse weather, where
normally no thermal image could be
shown.