User wearable fluorescence enabled visualization system

Patent metadata

Field	Value
Publication number	US-11719925-B2
Application number	US-202017134312-A
Country	US
Kind code	B2
Filing date	Dec 26, 2020
Priority date	Apr 21, 2020
Publication date	Aug 8, 2023
Grant date	Aug 8, 2023

Abstract

A user-wearable fluorescence based visualization system comprising a multi-light lamp assembly that provides for the selected output of light using multiple light emitting sources, wherein the outputted light may be tailored to generate response wavelength by the interaction of the emitted light and a tissue illuminated by the emitted light, through the process of fluorescence, and a viewing system that allows a practitioner view the fluorescent light generated by the tissue, and distinguish between healthy and diseased tissues.

First claim

What is claimed is:

1. A user wearable visualization system comprising:
a light assembly, said light assembly comprising:
at least one lighting element, each of said at least one light element comprising:
a housing, said housing comprising:
at least one projection lens on a first end of said housing, said at least one projection lens forming a lighting element optical axis;
a plurality of lighting sources positioned along an inner circumference of said housing, each of said plurality of lighting sources configured to:
 generate a light;
a light director comprising a plurality of reflective surfaces, positioned on a second end of said housing, said light director configured to:

receive, upon said plurality of reflective surfaces, said light generated by said plurality of lighting sources; and
redirect said received light toward a known area on one of said at least one projection lens, said known area being about said optical axis of said at least one projection lens, wherein said redirected light is emitted through said at least one projection lens.

2. The user wearable visualization system of claim 1 , wherein said light director is one of:
a multi-sided pyramid, a multi-sided clipped pyramid, a cone and a clipped cone.

3. The user wearable visualization system of claim 1 comprising:
an electronic circuit comprising:
a switch, wherein said electronic circuit is configured to:
control, through said switch, an application of a voltage to said plurality of lighting sources.

4. The user wearable visualization system of claim 1 , wherein said lighting sources are selected from a group comprising: white light emitting lighting sources and colored light emitting lighting sources, wherein said lighting sources are selected from a group consisting of: lasing diodes and non-lasing diodes.

5. The user wearable visualization system of claim 1 , wherein selected ones of said plurality of lighting sources comprising:
a transmission filter, said transmission filter configured to:
limit a wavelength range of said light generated by said selected one of said plurality of lighting sources to a known wavelength range.

6. The user wearable visualization system of claim 1 , further comprising:
a dome lens positioned substantially perpendicular to said optical axis, wherein said light redirected by said light director is positioned at one of: within a focal point of said dome lens and at a focal point of said dome lens.

7. The user wearable visualization system of claim 1 , wherein each of said lighting sources comprises:
a dome lens.

8. The user wearable visualization system of claim 1 , wherein said lighting assembly is attached to one of:
an eyewear, a headband and a head strap.

9. The user wearable visualization system of claim 8 , wherein said eyewear comprises:
a first lens; and
a second lens connected together by a bridge element, said first lens and said second lens comprising:
a lens filter configured to:
block a first selected wavelength range of a second light viewed through said first lens and said second lens, said second light comprising a reflection of said emitted redirected light and a fluorescent light generated by an interaction of said emitted redirected light with an object illuminated by said emitted redirected light; and
allow passage of at least said fluorescent light within said second light.

10. The user wearable visualization system of claim 9 , wherein said lens filter comprises:
a material configured to:
increase an optical density of said first lens and said second lens associated with said first selected wavelength range of said second light, said optical density being based on an input power of said second light.

11. The user wearable visualization system of claim 9 , wherein each of said first lens and said second lens comprises:
a magnification device configured to:
magnify said second light by a known degree of magnification, said magnification device comprising:
a magnification filter configured to:
block said first selected wavelength range of a second light; and
allow passage of at least said fluorescent light within said second light.

12. The user wearable visualization system of claim 11 , wherein said magnification filter comprises:
a first filter adjacent a distal end of said magnification device; and
a second filter adjacent a proximal end of said magnification device.

13. The user wearable visualization system of claim 12 , wherein said first filter comprises:
an optical density in said first selected wavelength range based on said input power of said second light; and
said second filter comprises:
an optical density in said first selected wavelength range based on said optical density of said first filter and said known degree of magnification.

14. A user wearable visualization system comprising:
a lighting assembly comprising:
at least one lighting element comprising:
a plurality of light emitting sources positioned about an inner circumference of said first lighting element;
a light director comprising a plurality of reflective surfaces; and
a lens assembly comprising at least one lens, wherein said light director is configured to:
receive light emitted by said plurality of light emitting sources; and
direct said received light toward a known area on said at least one lens, said known area being positioned along an optical axis of said lens, wherein at least one of said at least one lighting element is configured to:

emit at least one of: a white light and a colored light, and

a viewing device comprising:
a plurality of lens, wherein each of said plurality of lens comprises a lens filter, said viewing device configured to:
view a second light, wherein each of said lens filter comprising:
a material configured to:
increase an optical density of said lens filter with regard to a first wavelength range associated with said colored light, wherein said increased optical density causing light of said second light within said first wavelength range to be blocked from being viewed.

15. The user wearable visualization system of claim 14 , wherein
said plurality of light emitting sources comprises
a plurality of white light LEDs.

16. The user wearable visualization system of claim 14 , wherein
said plurality of light emitting sources associated with said at least one lighting element comprises:
at least one white light LED; and
at least one colored light LED configured to emit light in a light in a lower portion of a blue light wavelength range.

17. The user wearable visualization system of claim 14 comprising:
an electronic circuit configured to:
a control an application of a voltage to selected ones of plurality of light emitting sources contained within said at least one lighting element.

18. The user wearable visualization system of claim 17 , comprising:
a receiver configured to:
receive an indication of a change in position of a switch; and
provide said indication of said change in position to said electronic circuit.

19. The lighting assembly of claim 14 , wherein said plurality of lighting sources comprises:
a plurality of color light LEDs, wherein said plurality of color light LEDs are configured to:
emit light in at least one of:
a lower portion of a blue light wavelength range and an upper portion of said blue light wavelength range.

Assignees

• Designs For Vision

Inventors

• Steier Liviu
• Feinbloom Richard E

Classifications

• F21Y2113/30

  of visible and non-visible spectrum · CPC title

• G02B25/02 Primary

  with means for illuminating object viewed · CPC title

• A61B5/0017

  transmitting optical signals · CPC title

• A61B5/0077

  Devices for viewing the surface of the body, e.g. camera, magnifying lens · CPC title

• A61B5/7225

  Details of analogue processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation (input circuits for detecting, measuring, or recording bioelectric or biomagnetic signals A61B5/30; specific diagnostic methods using bioelectric or biomagnetic signals A61B5/316) · CPC title