|Category:||Head-Up Display [HUD]|
|Object Name:||Typhoon HUD Diffractive Combiner Glass|
|Year of Manufacture:||Unknown|
|Location:||Archive Object Store|
In 1983 the UK, France, Germany, Italy and Spain launched the Future European Fighter Aircraft (FEFA) programme.. In 1984 France reiterated its requirement for a carrier-capable version and demanded a leading role. The UK, West Germany and Italy opted out and established a new EFA programme.
In Turin on 2 August 1985 Italy, West Germany and the UK agreed to go ahead with the Eurofighter. Spain rejoined the Eurofighter project in early September 1985. The aircraft was known as Eurofighter EFA from the late 1980s until it was renamed EF 2000 in 1992. The maiden flight of the Eurofighter prototype took place on 27 March 1994 and on 2nd September 1998, a naming ceremony was held at Farnborough when the Typhoon name was formally adopted. The aircraft was known as Eurofighter EFA from the late 1980s until it was renamed EF 2000 in 1992.
The first flight of the Eurofighter prototype took place on 27 March 1994 and in 1998 the Typhoon name was formally adopted.
The Typhoon HUD has a single element combiner using new computer generated holographic techniques to take out the distortion. The Combiner assembly features a single element comprising two glass plates bonded to produce a flat parallel sided assembly. A complex reflective holographic optical element (HOE) is recorded on photosensitised gelatine on the spherical interface sandwiched in the assembly which acts as the collimating Combiner. The construction optics to manufacture the HOE incorporate a CGH that generates a phase shape that could not be done using conventional lenses.
The combiner is also flat which minimises real world distortion and provides a total field of view (TFoV) of 30deg x 25deg with an instantaneous field of view (IFOV) of 30deg x 20deg.
This design is capable of cursive, raster and hybrid operation with a sunlight readable raster display. The minimal support structure gives a remarkably clear out-of-cockpit view optimal for air-to-air combat. The two seat variant has a similar HUD in the rear seat which can display video from the forward HUD camera. This design represents probably the `ultimate HUD' in service to date in a combat aircraft. The key feature is integrity such that the pilot no longer needs to monitor the HUD against other instruments thus reducing workload compared to Tornado for example.
This is a ‘holographic’ Combiner Glass made by Thales Optronics