Face plate graticule

In an optical display system, information recorded on a face plate or like optical element is injected into a main optical path by means of a standby sight device comprising a lens unit and a flexible fibre optic bundle having a numerical aperture sufficiently large to cover the maximum acceptance a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: NORRIE, DAVID GORDON, DEMAINE, DAVID GEORGE ANTHONY
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:In an optical display system, information recorded on a face plate or like optical element is injected into a main optical path by means of a standby sight device comprising a lens unit and a flexible fibre optic bundle having a numerical aperture sufficiently large to cover the maximum acceptance angle of the lens unit.