Positioning device for positioning a user by using both eyes...

Details Positioning device for positioning a user by using both eyes... Positioning device for positioning a user by using both eyes...

2004-09-24

2008-08-19

Chowdhury, Tarifur R. (Department: 2886)

Optics: measuring and testing

Position or displacement

Position transverse to viewing axis

Reexamination Certificate

active

07414737

ABSTRACT:
A user positioning device comprising a stand (1) carrying two positioning markers (5) that are disposed so that each can be seen by a respective one of the eyes of a user, when the user is positioned correctly, and means (7) for forming a light path between each of the eyes of the user and the corresponding positioning marker, the light paths being optically separate from each other relative to the eyes of the user.

REFERENCES:
patent: 3475082 (1969-10-01), Strietzel
patent: 4712895 (1987-12-01), Kamiyama et al.
patent: 5042937 (1991-08-01), Cornsweet
patent: 5579158 (1996-11-01), Padula
patent: 6445497 (2002-09-01), Adda
patent: 1 041 522 (2000-10-01), None
patent: WO-00/39760 (2000-07-01), None
Wildes, R.P., Proceedings of the IEEE, IEEE. New York, US, vol. 85, No. 9, Sep. 1, 1997, pp. 1348-1363.

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