System and method for a portable eye examination camera

• US 10,105,051 B2
• Filed: 03/22/2016
• Issued: 10/23/2018
• Est. Priority Date: 03/22/2015
• Status: Active Grant

• Current Assignee: Spect, Inc.
• Original Assignee: Spect, Inc.
• Inventors: Gupta, Satish Chander
• Primary Examiner(s): HASAN, MOHAMMED A
• Application Number:
  US15/076,824
• Publication Number:
  US 20160338587A1
• Time in Patent Office: 945 Days
• Field of Search: 351200-246
• CPC Class Codes: A61B 2560/0431 Portable apparatus, e.g. comprising a handle or case
• CPC Class Codes: A61B 3/1208 Multiple lens hand-held instruments
• CPC Class Codes: A61B 3/14 Arrangements specially adapted for eye photography apparatus or arrangements for taking photographs per se G03B
• CPC Class Codes: A61B 5/6898 Portable consumer electronic devices, e.g. music players, telephones, tablet computers
• CPC Class Codes: G02B 13/003 having two lenses
• CPC Class Codes: G02B 27/288 Filters employing polarising elements, e.g. Lyot or Solc filters G02B5/3016 takes precedence

Abstract

A system and method for a portable eye examination camera is described herein. The system and method may include: a light source disposed within said portable camera at a set distance away from an eye of a patient; a first lens within said portable camera for focusing the light from said light source onto a retina of the eye and providing a wide field retinal image; a second lens for receiving said retinal image and causing a magnification of said retinal image; and a digital camera within a mobile computing device for recording said retinal image.

Claims

1. A portable camera for capturing an image of a patient'"'"'s eye without contacting the patient'"'"'s eye, the portable camera comprising:

a light source disposed within the portable camera;

a first lens within the portable camera for focusing light from the light source onto a retina of the patient'"'"'s eye and providing a wide-field retinal image, wherein the first lens is a biconvex aspherical lens;

a second lens for receiving the wide-field retinal image and causing a magnification of the wide-field retinal image; and

a digital camera within a mobile computing device for recording the magnified wide-field retinal image.

2. The portable camera as claimed in claim 1, wherein a LED is used as the light source, and wherein the LED is substantially coaxial with the first lens and the second lens.

3. The portable camera as claimed in claim 1, wherein an Infrared LED is used to illuminate the retina of the patient'"'"'s eye without causing constriction of a pupil of the patient'"'"'s eye.

4. The portable camera as claimed in claim 1, wherein a focal length of the second lens is greater than a focal length of the first lens.

5. The portable camera as claimed in claim 1, wherein a distance between the first lens and the second lens is a sum of focal lengths of the first and second lenses.

6. The portable camera as claimed in claim 1, wherein retinal photography is possible without dilating a pupil of the patient'"'"'s eye.

7. A portable camera for capturing an image of a patient'"'"'s eye without contacting the patient'"'"'s eye, the portable camera comprising:

a light source disposed within the portable camera;

a first lens within the portable camera for focusing light from the light source onto a retina of the patient'"'"'s eye and providing a wide-field retinal image;

a second lens for receiving the wide-field retinal image and causing a magnification of the wide-field retinal image, wherein the second lens is a biconvex achromatic lens;

a digital camera within a mobile computing device for recording the magnified wide-field retinal image.

8. The portable camera as claimed in claim 7, wherein a LED is used as the light source, and wherein the LED is substantially coaxial with the first lens and the second lens.

9. The portable camera as claimed in claim 7, wherein an Infrared LED is used to illuminate the retina of the patient'"'"'s eye without causing constriction of a pupil of the patient'"'"'s eye.

10. The portable camera as claimed in claim 7, wherein a focal length of the second lens is greater than a focal length of the first lens.

11. The portable camera as claimed in claim 7, wherein a distance between the first and second lens is a sum of focal lengths of the first and second lenses.

12. The portable camera as claimed in claim 7, wherein retinal photography is possible without dilating a pupil of the patient'"'"'s eye.

13. A portable camera for capturing an image of a patient'"'"'s eye without contacting the patient'"'"'s eye, the portable camera comprising:

a light source disposed within the portable camera;

a first lens within the portable camera for focusing light from the light source onto a retina of the patient'"'"'s eye and providing a wide-field retinal image;

a second lens for receiving the wide-field retinal image and causing a magnification of the wide-field retinal image;

a first polarizing filter placed in front of the light source;

a second polarizing filter placed in front of second lens, wherein the second polarizing filter is placed at 90 degree polarity in respect to the first polarizing filter; and

a digital camera within a mobile computing device for recording the magnified wide-field retinal image.

14. The portable camera as claimed in claim 13, wherein a LED is used as the light source, and wherein the LED is substantially coaxial with the first lens and the second lens.

15. The portable camera as claimed in claim 13, wherein an Infrared LED is used to illuminate the retina of the patient'"'"'s eye without causing constriction of a pupil of the patient'"'"'s eye.

16. The portable camera as claimed in claim 13, wherein a focal length of the second lens is greater than a focal length of the first lens.

17. The portable camera as claimed in claim 13, wherein a distance between the first and second lens is a sum of focal lengths of the first and second lenses.

18. The portable camera as claimed in claim 13, wherein retinal photography is possible without dilating a pupil of the patient'"'"'s eye.

19. A portable camera for capturing an image of a patient'"'"'s eye without contacting the patient'"'"'s eye, the portable camera comprising:

a light source disposed within the portable camera;

a first lens within the portable camera for focusing light from the light source onto a retina of the patient'"'"'s eye and providing a wide-field retinal image, wherein the first lens is a biconvex aspherical lens;

a second lens for receiving the wide-field retinal image and causing a magnification of the wide-field retinal image, wherein a power of the first lens is greater than a power of the second lens; and

a digital camera within a mobile computing device for recording the magnified wide-field retinal image.

20. The portable camera as claimed in claim 19, wherein a LED is used as the light source and wherein the LED is substantially coaxial with the first lens and the second lens.

21. The portable camera as claimed in claim 19, wherein an Infrared LED is used to illuminate the retina of the patient'"'"'s eye without causing constriction of a pupil of the patient'"'"'s eye.

22. The portable camera as claimed in claim 19, wherein a focal length of the second lens is greater than that a focal length of the first lens.

23. The portable camera as claimed in claim 19, wherein a distance between the first lens and the second lens is a sum of focal lengths of the first and second lenses.

24. The portable camera as claimed in claim 19, wherein retinal photography is possible without dilating a pupil of the patient'"'"'s eye.

25. A portable camera for capturing an image of a patient'"'"'s eye without contacting the patient'"'"'s eye, the portable camera comprising:

a light source disposed within the portable camera;

a first lens within the portable camera for focusing light from the light source onto a retina of the patient'"'"'s eye and providing a wide-field retinal image;

a second lens for receiving the wide-field retinal image and causing a magnification of the wide-field retinal image, wherein the second lens is a biconvex achromatic lens, and wherein a power of the first lens is greater than a power of the second lens;

a digital camera within a mobile computing device for recording the magnified wide-field retinal image.

26. The portable camera as claimed in claim 25, wherein a LED is used as the light source, and wherein the LED is substantially coaxial with the first lens and the second lens.

27. The portable camera as claimed in claim 25, wherein an Infrared LED is used to illuminate the retina of the patient'"'"'s eye without causing constriction of a pupil of the patient'"'"'s eye.

28. The portable camera as claimed in claim 25, wherein a focal length of the second lens is greater than a focal length of the first lens.

29. The portable camera as claimed in claim 25, wherein a distance between the first and second lens is a sum of focal lengths of the first and second lenses.

30. The portable camera as claimed in claim 25, wherein retinal photography is possible without dilating a pupil of the patient'"'"'s eye.

31. A portable camera for capturing an image of a patient'"'"'s eye without contacting the patient'"'"'s eye, the portable camera comprising:

a light source disposed within the portable camera;

a first lens within the portable camera for focusing light from the light source onto a retina of the patient'"'"'s eye and providing a wide-field retinal image;

a second lens for receiving the wide-field retinal image and causing a magnification of the wide-field retinal image, wherein a power of the first lens is greater than a power of the second lens;

a first polarizing filter placed in front of the light source;

a second polarizing filter placed in front of the second lens, wherein the second polarizing filter is placed at 90 degree polarity in respect to the first polarizing filter; and

a digital camera within a mobile computing device for recording the magnified wide-field retinal image.

32. The portable camera as claimed in claim 31, wherein a LED is used as the light source, and wherein the LED is substantially coaxial with the first lens and the second lens.

33. The portable camera as claimed in claim 31, wherein an Infrared LED is used to illuminate the retina of the patient'"'"'s eye without causing constriction of a pupil of the patient'"'"'s eye.

34. The portable camera as claimed in claim 31, wherein a focal length of the second lens is greater than a focal length of the first lens.

35. The portable camera as claimed in claim 31, wherein a distance between the first and second lens is a sum of focal lengths of the first and second lenses.

36. The portable camera as claimed in claim 31, wherein retinal photography is possible without dilating a pupil of the patient'"'"'s eye.

37. A portable camera for performing retinal photography without dilating a pupil of an eye of a patient, the portable camera comprising:

a LED light source disposed within the portable camera;

two polarizing filters, wherein a first filter of the two polarizing filters is placed in front of the LED light source and a second filter of the two polarizing filters is placed in front of the second lens, wherein the second filter is placed at 90 degree polarity in respect to the first filter;

a biconvex aspherical lens within the portable camera for focusing the light from the light source onto a retina of the eye of the patient and providing a wide field retinal image, whereby the LED light source focuses the wide field retinal image without causing constriction of the pupil of the eye of the patient;

a biconvex achromatic lens for receiving the wide field retinal image and causing a magnification of the wide field retinal image, wherein a power of the biconvex aspherical lens is greater than a power of the biconvex achromatic lens, and wherein a focal length of the biconvex achromatic lens is greater than a focal length of the biconvex aspherical lens; and

a digital camera within a mobile computing device for recording the magnified wide field retinal image.