Face plate graticule

Details Face plate graticule Face plate graticule

1976-04-30

1977-11-29

Corbin, John K.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340366F, 340378B, 356251, G02B 516, G08B 500, G02B 2310

Patent

active

040603075

ABSTRACT:
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.

REFERENCES:
patent: 2395605 (1946-02-01), Young
patent: 3502416 (1970-03-01), Rickert
patent: 3524702 (1970-08-01), Bellows et al.
patent: 3962702 (1976-06-01), Kriege

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