Night vision systems
First Claim
1. A night vision system comprising:
- a helmet;
a transparent visor which in use is positioned before two eye positions within the helmet at which the eyes of a wearer of the helmet are respectively positioned in use of the system, a night vision device having two eye pieces one for each eye of said wearer; and
means for supporting said night vision device on the helmet so as to present the eye pieces to the helmet wearer at respective positions before said eye positions and said visor, said means supporting said night vision device comprising a four-bar linkage arrangement which constrains the night vision device for movement along a path of movement between a first operative position and a second operative position giving a viewing direction tilted with respect to the viewing direction in the first operative position, said path of movement being such that, in respect of each eye piece, the fore and aft axis of that eye piece when said device is in said first operative position intercepts the fore and aft axis of that eye piece when said device is in said second operative position substantially at the eye position corresponding to that eye piece, and such that the eye pieces do not make contact with said visor.
1 Assignment
0 Petitions
Accused Products
Abstract
A night vision system comprising a helmet (1) having a transparent visor (13 or 15) before or movable to a position before the eye positions (IL, IR) of an observer wearing the helmet and a night vision device (19) having two eye pieces (22L, 22R), one for each eye, supported dependant from the helmet (11) so as to present the eye pieces (22L, 22R) of the device (19) at a short distance before the helmet wearer'"'"'s eye positions and the visor (13 or 15). The device (19) is supported by means of a four-bar linkage arrangement (A,B,C,D) which constrains the eye pieces (22L, 22R) for rotational movement about the respective eye positions (IL, IR) between different operative positions, and so that the eye pieces (22L, 22R) do not make contact with the visor (13 or 15) during eye piece movement.
41 Citations
18 Claims
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1. A night vision system comprising:
- a helmet;
a transparent visor which in use is positioned before two eye positions within the helmet at which the eyes of a wearer of the helmet are respectively positioned in use of the system, a night vision device having two eye pieces one for each eye of said wearer; and
means for supporting said night vision device on the helmet so as to present the eye pieces to the helmet wearer at respective positions before said eye positions and said visor, said means supporting said night vision device comprising a four-bar linkage arrangement which constrains the night vision device for movement along a path of movement between a first operative position and a second operative position giving a viewing direction tilted with respect to the viewing direction in the first operative position, said path of movement being such that, in respect of each eye piece, the fore and aft axis of that eye piece when said device is in said first operative position intercepts the fore and aft axis of that eye piece when said device is in said second operative position substantially at the eye position corresponding to that eye piece, and such that the eye pieces do not make contact with said visor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- a helmet;
Specification