Apparatus for monitoring physiolgical data to detect drug impairment
First Claim
1. An apparatus for monitoring physiological data of a human subject to detect drug impairment comprising:
- (a) a viewport housing having a viewport shield and first and second interior chambers separated by an opaque member, each chamber adapted to be adjacent an eye of the subject;
(b) sealing means for excluding substantially all ambient light from impinging upon the eyes of the subject, said sealing means being coupled about the viewport shield;
(c) energy absorbing means for absorbing energy radiated in the infrared range of the spectrum disposed upon the surfaces of the interior chambers and the opaque member;
(d) directed infrared source means for radiating energy in the infrared range of the spectrum at target areas of the eyes of the subject and mounted within each of said first and second interior chambers; and
(e) video sensing means for sensing images of the subject'"'"'s eye illuminated by radiation in the infrared range of the spectrum mounted within each of the first and second interior chambers.
3 Assignments
0 Petitions
Accused Products
Abstract
A non-invasive apparatus for monitoring physiological responses for detecting the presence of drug impairment. The oculomotor and pupillary system is monitored and evaluated to detect the ingestion of drugs and the impairing effect or influence thereof. The horizontal, vertical, oblique and torsional eye movement, eye lid blink activity as well as the size and reactivity of the pupil are the primary data sources. An enclosed chamber surrounds each of the eyes of the subject, and thereby precludes the admission of ambient light. Within each chamber are disposed point sources of infrared radiation specifically oriented with respect to the subject'"'"'s eye. An infrared sensitive video camera is positioned to minimize the effect of cosine compression within each chamber relative to the subject and is positioned with respect to the infrared radiation sources in order to provide maximum contrast between the pupil and iris of the eye. To detect movement of the eye in response to visible stimulus, a plurality of low intensity, visible light sources are disposed horizontally and vertically within each chamber. The sequential illumination of the visible light sources simulates eye movement while precluding pupil reaction thereto. The output of the video camera is processed concurrently with data responsive to other physiological responses to determine drug impairment.
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Citations
11 Claims
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1. An apparatus for monitoring physiological data of a human subject to detect drug impairment comprising:
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(a) a viewport housing having a viewport shield and first and second interior chambers separated by an opaque member, each chamber adapted to be adjacent an eye of the subject; (b) sealing means for excluding substantially all ambient light from impinging upon the eyes of the subject, said sealing means being coupled about the viewport shield; (c) energy absorbing means for absorbing energy radiated in the infrared range of the spectrum disposed upon the surfaces of the interior chambers and the opaque member; (d) directed infrared source means for radiating energy in the infrared range of the spectrum at target areas of the eyes of the subject and mounted within each of said first and second interior chambers; and (e) video sensing means for sensing images of the subject'"'"'s eye illuminated by radiation in the infrared range of the spectrum mounted within each of the first and second interior chambers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for monitoring physiological data of a human subject to detect drug impairment comprising:
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(a) a viewport housing having a viewport shield and first and second interior chambers separated by a visually opaque member, each chamber adapted to circumscribe and be adjacent to an eye of the subject; (b) sealing means for excluding substantially all ambient light from impinging upon the eyes of the subject, said sealing means being coupled about the viewport shield; (c) energy absorbing means for absorbing energy radiated in the infrared range of the spectrum disposed upon the surfaces of the interior chambers and the visually opaque member; (d) directed infrared source means for radiating energy in the infrared range of the spectrum at target areas of the eyes of the subject and mounted within each of said first and second interior chambers; (e) first and second illuminating source means for radiating a source of light in the visual portion of the spectrum at the eye of the subject, said first and second illuminating source means being coupled within said first and second interior chambers respectively; and (f) first and second video cameras sensitive to infrared radiation being mounted within said first and second interior chambers respectively, said video cameras being laterally displaced relative to said visually opaque member and said directed infrared source means whereby the effects of cosine compression are minimized. - View Dependent Claims (10, 11)
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Specification