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Impact in the space sector is speculated for several applications.


On the Ground.


On the test bench.

Ladewifin is suitable for rockets observation on the test bench.



On the launch site.


On the top of the high dynamic range, Ladewifin will have 23 bits/pixel/color depth. 


When the rocket crosses the upper layers of the atmosphere, the colors of the rocket become less and less saturated (diluted in white, blue or gray) especially when the sky isn’t 100% clear.   The luminosity of the rocket’s flame still generates a high dynamic range.  Therefore, the rocket becomes very hard to observe.





Ladewifin will be able to track rocket much higher in the sky than classic cameras on the ground.
Ladewifin will provide extended telemetry information, for driving the rocket.
Ladewifin will also provide extended diagnostic information after the launch, for analysis purposes.
Ladewifin can stand 500Hz frame rate, which is the requirement of rocket test bench.


In space.


Since moon-glare and earth-glare can disturb some space-sensors (star trackers), the parasites generated by sun-glare are an obvious challenge.


Rendez-vous and docking manoeuvres.


After missions in space, Jean-Loup Chrétien confirmed the danger of sun-glare in space while founding Tietronix Optoelectronics : another enterprise specially intended to fight blooming and glaring.

Succesful spacecraft rendez-vous and docking manoeuvres require high concentration from the astronauts.

Blinding glare issues from

    the sun

    its reflections on metal parts

are handicaps.  Ladewifin can enhance the speed and safety of these manoeuvres.

Ladewifin is fully complementary with their US20090015682A1, US3276813A, US4918534 and WO2005069605A1 patents without any overlap. These solutions are modular and can reach extreme performances.


Star tracking.


Observing the stars is required by calculators embedded in artificial satellites in order to calculate the satellite's orientation.  The luminance of

    the moon

    the earth's atmospheric layers

disturbs observing the stars.  Ladewifin's

    dynamic range

    large range of frame rates (up to 500Hz)

are suitable to top the performances of current star trackers.


Hyperspectral monitoring.


Satellites scanning the earth at 7 km/sec need

    a high frame rate

    a high sensibility (high fill-in ratio)

    a wide dynamic range

    no microlenses

as, for example, for hyperspectral scanning.


Ladewifin provides

    a wide dynamic range

    a high frame rate

    a large pixel-depth

    a whole range of fill-in ratios without microlenses.


option pixel size * horizontal x vertical temporal spectral global
fill-in ratio fill-in ratio fill-in ratio fill-in ratio
1 23 x 23 µm² 71,43% 99,60% 100% 71,14%
2 18 x 18 µm² 83,33% 49,80% 100% 41,50%
3 15 x 15 µm² 90,91% 24,90% 100% 22,64%


Microlenses boost the vertical x horizontal fill-in ratio but dilatation issues inhibits their presence in space.

Option 2 meets as much as possible the requirements of hyperspectral monitoring of earth from space.

* size before application of the "horizontal x vertical fill-in ratio" to get 1 photodiode's photosensible area.


Lightning imager.








Terrestrial weather observation requires statistics about lightning.  The lightning average duration is 200 µseconds made up from a number of much shorter flashes (strokes) of around 60 to 70 µseconds.

A wide dynamic range and high frame rate are required for correct analysis.  Ladewifin can combine both.


Space exploration robotics.


Space robots use cameras.

The sun, torches that beat the sun, (in direct or indirect view)  make classic cameras unsuitable for these applications.  Ladewifin enables better scans of such extremely contrasted sceneries for extraterrestrial robots.



Debris & asteroids spotting & tracking.


Dangerous asteroids and space debris are sometimes unnoticed because of sun-glare.   A telescope in the Venusian neighborhood may help spotting asteroidsLadewifin can also help spotting debris and asteroids without going so far.



Space weather.










The solar and heliospheric observatory has got a LASCO with 3 telescopes, each of them having an "exceptional dynamic range" an 1024 x 1024 resolution : the same purpose as Ladewifin with the same resolution.


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