Device to check the setting of the position and orientation of a

Details Device to check the setting of the position and orientation of a Device to check the setting of the position and orientation of a

1995-01-25

1996-07-09

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

356154, 351210, G01C 2102

Patent

active

055346898

ABSTRACT:
An instrument system to make settings and verify that the pupil of an eye of a wearer of a helmet designed to receive a piece of optoelectronic equipment itself having a pupil truly coincides with the wearer's pupil, wherein the instrument system includes first and second optical devices whose position with respect to the helmet is fixed, and a first screen and a second screen E.sub.1 and E.sub.2, each including a reference-marking test pattern, the position of the helmet with respect to the wearer being accurate only if the image of the wearer's eye through the first optical means and the image through the second optical means, of a target on which the wearer's line of view is fixed, are respectively well-positioned with respect to the test patterns of the screens E.sub.1 and E.sub.2. In the preferred embodiment, the screens E.sub.1 and E.sub.2 are merged into a single screen E through an optical device partially common to the first and second optical devices.

REFERENCES:
patent: 4852988 (1989-08-01), Velez et al.
patent: 5053764 (1991-10-01), Barbier et al.
patent: 5057744 (1991-10-01), Barbier et al.
patent: 5093567 (1992-03-01), Staveley
patent: 5239293 (1993-08-01), Barbier
patent: 5313054 (1994-05-01), Lach et al.
patent: 5386258 (1995-01-01), Nagano
patent: 5410376 (1995-04-01), Cornsweet et al.
patent: 5428413 (1995-06-01), Shindo

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