Ocular-performance-based head impact measurement using a faceguard
First Claim
1. A faceguard wherein:
- the faceguard is configured for attachment in front of the face of a human;
the faceguard is configured for measuring a human ocular performance characteristic selected from the group of;
vestibulo-ocular reflex;
ocular saccades;
pupillometry;
pursuit tracking during visual pursuit;
vergence;
eye closure;
focused position of the eyes;
dynamic visual acuity;
kinetic visual acuity;
retinal image stability;
foveal fixation stability; and
nystagmus; and
the faceguard further comprises;
a plurality of structural members;
at least one aperture configured for human vision through the faceguard;
an eye sensor wherein;
the eye sensor comprises a video camera; and
the eye sensor senses eye information selected from the group of;
horizontal eye movement;
vertical eye movement;
pupil size; and
eyelid movement;
a head orientation sensor wherein;
the head orientation sensor senses a head movement selected from the group of pitch and yaw of a person'"'"'s head wherein pitch represents a rotation about a first axis representing up and down movement of the person'"'"'s face when the rear of the person'"'"'s head moves in the opposite direction and yaw represents horizontal movement of the face when looked at from the front about a second axis substantially aligned with the spine and perpendicular to the first axis; and
the head orientation sensor senses the head movement in a range of frequencies between 0.01 Hertz and 15 Hertz;
the head orientation sensor comprises a micro-electro-mechanical system integrated circuit comprising a module selected from the group consisting of an accelerometer, a magnetometer, and a gyroscope; and
an electronic circuit wherein;
the electronic circuit comprises a central processing unit, and a memory unit;
the electronic circuit is responsive to the eye movement information received from the eye sensor; and
the electronic circuit is responsive to head movement information received from the head orientation sensor.
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Accused Products
Abstract
A system or method for measuring human ocular performance can be implemented using an eye sensor, a head orientation sensor, and an electronic circuit. The device is configured for measuring vestibulo-ocular reflex, pupillometry, saccades, visual pursuit tracking, vergence, eyelid closure, dynamic visual acuity, retinal image stability, foveal fixation stability, focused position of the eyes or visual fixation of the eyes at any given moment and nystagmus. The eye sensor comprises a video camera that senses vertical movement and horizontal movement of at least one eye. The head orientation sensor senses pitch and yaw in the range of frequencies between 0.01 Hertz and 15 Hertz. The system is implemented as part of a faceguard.
87 Citations
20 Claims
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1. A faceguard wherein:
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the faceguard is configured for attachment in front of the face of a human; the faceguard is configured for measuring a human ocular performance characteristic selected from the group of; vestibulo-ocular reflex; ocular saccades; pupillometry; pursuit tracking during visual pursuit; vergence; eye closure; focused position of the eyes; dynamic visual acuity; kinetic visual acuity; retinal image stability; foveal fixation stability; and nystagmus; and the faceguard further comprises; a plurality of structural members; at least one aperture configured for human vision through the faceguard; an eye sensor wherein; the eye sensor comprises a video camera; and the eye sensor senses eye information selected from the group of; horizontal eye movement; vertical eye movement; pupil size; and eyelid movement; a head orientation sensor wherein; the head orientation sensor senses a head movement selected from the group of pitch and yaw of a person'"'"'s head wherein pitch represents a rotation about a first axis representing up and down movement of the person'"'"'s face when the rear of the person'"'"'s head moves in the opposite direction and yaw represents horizontal movement of the face when looked at from the front about a second axis substantially aligned with the spine and perpendicular to the first axis; and the head orientation sensor senses the head movement in a range of frequencies between 0.01 Hertz and 15 Hertz; the head orientation sensor comprises a micro-electro-mechanical system integrated circuit comprising a module selected from the group consisting of an accelerometer, a magnetometer, and a gyroscope; and an electronic circuit wherein; the electronic circuit comprises a central processing unit, and a memory unit; the electronic circuit is responsive to the eye movement information received from the eye sensor; and the electronic circuit is responsive to head movement information received from the head orientation sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A human ocular performance measuring system wherein:
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the system is configured for measuring an ocular performance characteristic selected from the group of; vestibulo-ocular reflex; ocular saccades; pupillometry; pursuit tracking during visual pursuit; vergence; eye closure; focused position of the eyes; dynamic visual acuity; kinetic visual acuity; retinal image stability; foveal fixation stability; and nystagmus; and the system comprises; an eye sensor wherein; the eye sensor is located on a faceguard wherein the faceguard comprises a plurality of structural members and at least one aperture configured for human vision through the faceguard; the eye sensor comprises a video camera; and the eye sensor senses eye movement information selected from the group of; horizontal eye movement; vertical eye movement; pupillometry; and eyelid movement; a head orientation sensor wherein; the head orientation sensor is located on the faceguard; the head orientation sensor senses a head movement selected from the group of pitch and yaw of a person'"'"'s head wherein pitch represents a rotation about a first axis representing up and down movement of the person'"'"'s face when the rear of the person'"'"'s head moves in the opposite direction and yaw represents horizontal movement of the face when looked at from the front about a second axis substantially aligned with the spine and perpendicular to the first axis; and the head orientation sensor senses the head movement in a range of frequencies between 0.01 Hertz and 15 Hertz; and an electronic circuit wherein; the electronic circuit comprises a central processing unit, and a memory unit; the electronic circuit is responsive to the eye movement information received from the eye sensor; and the electronic circuit is responsive to head movement information received from the head orientation sensor. - View Dependent Claims (17, 18, 19)
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20. A method for measuring human ocular performance comprising the steps of:
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establishing a faceguard that comprises; a plurality of structural members and at least one aperture configured for allowing human vision through the faceguard; an eye sensor comprising a video camera configured for sensing eye movement information selected from the group of; horizontal eye movement; vertical eye movement; pupillometry; and eyelid movement; a head orientation sensor configured for sensing a head movement selected from the group of pitch and yaw of a person'"'"'s head wherein pitch represents a rotation about a first axis representing up and down movement of the person'"'"'s face when the rear of the person'"'"'s head moves in the opposite direction and yaw represents horizontal movement of the face when looked at from the front about a second axis substantially aligned with the spine and perpendicular to the first axis; and an electronic circuit; and using the electronic circuit to; receive eye movement information from the eye sensor; receive head movement information from the head orientation sensor; and generate a gain signal and a phase signal using the eye movement information, and the head movement information; and measure an ocular performance characteristic selected from the group of; vestibulo-ocular reflex; ocular saccades; pupillometry; pursuit tracking during visual pursuit; vergence; eye closure; focused position of the eyes; dynamic visual acuity; kinetic visual acuity; retinal image stability; foveal fixation stability; and nystagmus.
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Specification