Small head-mounted compass system with optical display

Details Small head-mounted compass system with optical display Small head-mounted compass system with optical display

2005-03-15

2005-03-15

Bui, Bryan (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Orientation or position

C702S092000, C702S093000, C702S095000

Reexamination Certificate

active

06868360

ABSTRACT:
A system and method indicate the direction faced by an operator. A waterproof housing has a mounting mechanism to engage a part of a headgear worn by an operator to position the housing in a portion of the operator's forward field of view. A two-axis gimbal mechanism is inside the waterproof housing and has a protective housing connected to the waterproof housing. The protective housing contains ring structure coupled to two orthogonal axis structures. A magnetic field sensor module is mounted on one of the axis structures and provides magnetic field data signals representative of the direction faced by the operator. An optical element has a wide field of view to transmit compass data images representative of the magnetic field data signals to the eyes of the operator.

REFERENCES:
patent: 4318522 (1982-03-01), Appleberry
patent: 6181644 (2001-01-01), Gallagher

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