|Category:||Head-Up Display [HUD]|
|Object Name:||LANTIRN Diffractive HUD Combiner Prototype|
|Part No:||229 E 6848|
|Division:||Airborne Display [ADD]|
|Platform(s):||F-16C/D Fighting Falcon|
|Year of Manufacture:||1978|
|Location:||Archive Object Store|
Part No. 229.E.6848
Ser. No. 001
GEC-Marconi Avionics began development of diffractive (holographic) optical elements in the late 1970s, building on the work of the Marconi Research Centre at Great Baddow under Dr Firth. A clean room was opened at Rochester in 1987 to carry out research and to manufacture holographic elements. It has an optical bench going down to bedrock to minimise the vibrations from the nearby motorway!
An early demonstrator in 1978 was this "Lensless HUD". This design uses a 175mm/7" diagonal TV Monitor CRT projecting into a three element Combiner which carries out collimation with no further lens groups. This is Serial No.001 although it is the only one of this type made. A slightly earlier version used a Cathode Ray Tube in place of the TV Monitor. With the eventual addition of a relay lens this design was to be developed into the DHUD or LANTIRN HUD.