Display of indicator lights in night vision devices using...

Details Display of indicator lights in night vision devices using... Display of indicator lights in night vision devices using...

2007-10-16

2007-10-16

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S207000, C313S525000

Reexamination Certificate

active

11315519

ABSTRACT:
A night vision device includes an image intensifier tube and a fiber optic screen disposed in operative relationship to each other. The fiber optic screen includes a longitudinal bundle of multiple optical fibers, where the bundle has an outer surface. A groove is formed in the fiber optic screen and extends transversely to the longitudinal bundle. An indicator is positioned adjacent to the outer surface of the bundle and is proximate to the groove, where the groove is configured to redirect light emitted from the indicator for viewing by a user. The groove may be formed circumferentially around a portion of the outer surface of the longitudinal bundle. The groove includes a surface of end portions of multiple cut optical fibers, and the groove is configured to redirect the light emitted from the indicator toward the user by way of the end portions of the multiple cut optical fibers.

REFERENCES:
patent: 3933410 (1976-01-01), Milton
patent: 5254852 (1993-10-01), Filipovich et al.
patent: 5572034 (1996-11-01), Karellas
patent: WO 2004/083921 (2004-09-01), None
International Search Report Appln. No. 06126065.9-2217 dated Apr. 23, 2007.

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