DIRECT READING EYE MOVEMENT MONITOR

• US 3,583,794 A
• Filed: 03/10/1969
• Issued: 06/08/1971
• Est. Priority Date: 03/10/1969
• Status: Expired due to Term

• Current Assignee: A S Laboratories Incorporated
• Original Assignee: Joel S. Newman
• Inventors: Newman, Joel S.
• Application Number:
  US04/806,781
• Time in Patent Office: 820 Days
• US Class Current: 351/210
• CPC Class Codes: A61B 3/113 for determining or recording eye movement

Abstract

A direct reading eye position and movement monitor with a lens system for projecting images of the eyes of the subject on a screen, a signal generator or transducer assembly directed at the interface of two portions of the eyes with distinctly different light reflecting properties, and a two-channel recorder connected to the output of the transducer assembly to record the separate output signals generated as a result of movement of the eyes of the subject.

Claims

2. A direct reading eye movement monitor as described in claim 1 further characterized by a lens system for projecting the image of both eyes of a subject on the screen, and separate transducer means for each eye of the subject.

3. A direct reading eye movement monitor as described in claim 2 further characterized by said transducer means being two pairs of independently mounted photocells, one pair for each eye of the subject.

4. A direct reading eye movement monitor as described in claim 2 further characterized by said recorder being a two-channel, strip chart recorder wIth each channel being connected to a transducer means.

5. A direct reading eye movement monitor as described in claim 4 further characterized by said viewing screen being mounted on the housing in a position so that it may be observed by an operator, and means for moving the transducer means so as to aim each independently at the interface of said portions of said image.

6. A direct reading eye movement monitor as described in claim 5 further characterized by a pair of mirrors in the housing positioned to reflect the images of the eyes and project them onto the screen, and means for separately adjusting each mirror so that the image of each eye may be moved on the screen independently of the other.

7. A direct reading eye movement monitor as described in claim 6 further characterized by an eye illuminator mounted on the housing for lighting the eyes of the subject.

8. A direct reading eye movement monitor as described in claim 3 further characterized by means for separately moving each pair of photocells to direct them independently of one another to the interface of each eye image.

9. A direct reading eye movement monitor as described in claim 8 further characterized by said means for separately moving each pair of photocells limiting movement of the photocells along one path, a pair of mirrors in the housing position to reflect the images of the eyes and project them onto the screen, means for separately adjusting each mirror so that the image of each eye may be moved on the screen independently of the other, and said means for separately adjusting the mirrors moving the eye images on the screen along another path which may cross said one path.

10. A direct reading eye movement monitor as described in claim 9 further characterized by an easel mounted on the housing for supporting reading material to be read by the subject.

11. A direct reading eye movement monitor as described in claim 10 further characterized by said recording being made on heat sensitive paper.

12. A direct reading eye movement monitor as described in claim 1 wherein said means for controlling the relative position of said images and said transducer means comprises means for moving both said transducer means and said eye images relative to one another to aim the transducer means at the interface of said portions of said eye images.

13. A direct reading eye movement monitor as described in claim 3 further characterized by means for moving the eye images and transducer means relative to one another independently for each eye to aim the transducer means at the interfaces independently for each eye.

14. A direct reading eye movement monitor as described in claim 13 further characterized by said means for moving the image and transducer means relative to one another including at least one set of mirrors for moving the eye images on the screen.

15. A direct reading eye movement monitor as described in claim 9 further characterized by nystagmus producing means mounted on the housing.