Dynamic head motion measuring system
First Claim
1. A dynamic measuring system for the measurement of head motions of a person comprising:
- A. A high speed camera having film, said camera for mounting upon the trunk of said person;
B. A form fitted helmet to be worn on the head of said person;
C. A target system mounted upon said helmet;
D. A pair of fiber-optic light guides connected to said camera and aligned on said target system from differing angles; and
E. A pair of lenses connected to said fiber optic light guides to triangulate the target system, whereby triangulation permits a frame by frame measurement of head movement.
1 Assignment
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Accused Products
Abstract
A stereo photographic measurement system having two wide angle lenses conted to a high speed motion picture camera by fiber-optic imaging bundles, and a target system, the camera and lenses being mounted upon one object and the target being mounted upon another object subject to motion relative thereto within the overlapping views of the lenses. In one embodiment head motion relative to the subject'"'"'s torso during parachute opening is measured by this system with the target mounted on the back of the head and the lenses mounted near the base of the neck. Measurements of target position in each frame of stereo film by comparison of position of squares on the target are used to calculate head motion with respect to the upper torso.
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Citations
8 Claims
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1. A dynamic measuring system for the measurement of head motions of a person comprising:
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A. A high speed camera having film, said camera for mounting upon the trunk of said person; B. A form fitted helmet to be worn on the head of said person; C. A target system mounted upon said helmet; D. A pair of fiber-optic light guides connected to said camera and aligned on said target system from differing angles; and E. A pair of lenses connected to said fiber optic light guides to triangulate the target system, whereby triangulation permits a frame by frame measurement of head movement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification