Small head-mounted compass system with optical display
First Claim
1. A compass system to indicate direction faced comprising:
- a waterproof housing;
a mounting mechanism on said housing to engage a part of a headgear worn by an operator and position said housing in a portion of the forward field of view of the operator;
a two-axis gimbal mechanism inside said waterproof housing, said two-axis gimbal mechanism having a protective housing connected to said waterproof housing, said protective housing containing ring structure and two orthogonal axis structures;
a magnetic field sensor module mounted on one of said axis structures, said magnetic field sensor module providing magnetic field data signals representative of the direction faced by the operator; and
an optical element having a wide field of view to transmit compass data images representative of said magnetic field data signals to the eyes of the operator.
1 Assignment
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Accused Products
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.
26 Citations
15 Claims
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1. A compass system to indicate direction faced comprising:
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a waterproof housing;
a mounting mechanism on said housing to engage a part of a headgear worn by an operator and position said housing in a portion of the forward field of view of the operator;
a two-axis gimbal mechanism inside said waterproof housing, said two-axis gimbal mechanism having a protective housing connected to said waterproof housing, said protective housing containing ring structure and two orthogonal axis structures;
a magnetic field sensor module mounted on one of said axis structures, said magnetic field sensor module providing magnetic field data signals representative of the direction faced by the operator; and
an optical element having a wide field of view to transmit compass data images representative of said magnetic field data signals to the eyes of the operator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A head mounted compass system comprising:
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means for providing a waterproof housing;
means for engaging a headgear worn by an operator, said engaging means being mounted on said waterproof housing providing means to hold said housing in a portion of the forward field of view of the operator;
means for securing a two-axis gimbal mechanism inside said waterproof housing providing means, said two-axis gimbal mechanism creating means having a protective housing connected to said waterproof housing providing means, said protective housing containing ring structure and two orthogonal axis structures;
a means for sensing magnetic fields mounted on one of said axis structures, said magnetic field sensing means providing magnetic field data signals representative of the direction faced by the operator; and
means for transmitting compass data images representative of said magnetic field data signals to the eyes of the operator, said transmitting means having a wide field of view to transmit said compass data images. - View Dependent Claims (14)
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15. A method of sensing direction faced by an operator comprising the steps of:
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providing a waterproof housing;
engaging a headgear worn by an operator by a mounting mechanism on said waterproof housing to position said housing in a portion of the forward field of view of the operator;
securing a two-axis gimbal mechanism inside said waterproof housing, said two-axis gimbal mechanism having a protective housing connected to said waterproof housing, said protective housing containing ring structure and two orthogonal axis structures;
sensing magnetic fields representative of the direction faced by the operator by a magnetic field sensor module mounted on one of said axis structures, said magnetic field sensor module providing magnetic field data signals representative of the direction faced by the operator; and
transmitting compass data images representative of said magnetic field data signals to the eyes of the operator, said compass data images being over a wide field of view.
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Specification