Portable and disposable FAR-UVC device

1. A handheld portable device for sanitizing a surface or air surrounding a surface, the handheld portable device comprising:

a body that comprises a user input;

a far-UVC illumination source disposed at the body;

a visible illumination source disposed at the body; and

a power source for providing power to the far-UVC illumination source;

wherein, responsive to actuation of the user input by a user of the handheld portable device, the far-UVC illumination source and the visible illumination source are powered and the far-UVC illumination source emits far-UVC illumination to sanitize the surface and the visible illumination source emits visible indicia onto the surface that is illuminated by the far-UVC illumination source, wherein the visible indicia presents focused illumination indicative of the handheld portable device being disposed at an optimal distance from the surface to be sanitized, and wherein the visible indicia does not present focused illumination indicative of the handheld portable device being disposed at an optimal distance from the surface to be sanitized.

2. The handheld portable device of claim 1 , wherein the far-UVC illumination source, when powered, emits far-UVC illumination with a wavelength between 200 nm and 230 nm.

3. The handheld portable device of claim 2 , wherein the far-UVC illumination source comprises a filter that filters illumination having a wavelength of greater than 230 nm.

4. The handheld portable device of claim 1 , wherein the visible indicia comprises crosshairs that illuminate an area that the far-UVC illumination, when powered, irradiates.

5. The handheld portable device of claim 1 , wherein the handheld portable device comprises a cell phone.

6. The handheld portable device of claim 1 , comprising a pathogen-illuminating illumination source that emits pathogen-illuminating illumination.

7. The handheld portable device of claim 6 , wherein the pathogen-illuminating illumination source emits illumination simultaneously with the far-UVC illumination source.

8. The handheld portable device of claim 6 , comprising a second user input, and wherein responsive to actuation of the second user input, the pathogen-illuminating illumination source emits pathogen-illuminating illumination.

9. The handheld portable device of claim 1 , comprising a timer, wherein the timer indicates that a period of time has elapsed following actuation of the user input.

10. The handheld portable device of claim 9 , wherein the timer indicates visually that the period of time has elapsed.

11. The handheld portable device of claim 9 , wherein the far-UVC illumination source is automatically depowered when the period of time has elapsed.

12. The handheld portable device of claim 11 , wherein the period of time is selectable by the user of the handheld portable device via another user input.

13. The handheld portable device of claim 1 , comprising a refractor, wherein the refractor is adjustable by the user to adjust a width of emitted illumination.

14. The handheld portable device of claim 13 , comprising a base disposed at the body, wherein rotating the base causes the refractor to adjust the width of emitted illumination.

15. A handheld portable device for sanitizing a surface or air surrounding a surface, the handheld portable device comprising:

a body that comprises a user input;

a far-UVC illumination source disposed at the body;

a lens disposed at the body;

a visible illumination source disposed at the body;

a power source for providing power to the far-UVC illumination source and the visible illumination source;

wherein the visible illumination source, when powered via actuation of the user input by a user holding the handheld portable device, emits visible illumination, and wherein the far-UVC illumination source, when powered via actuation of the user input, emits far-UVC illumination, wherein the lens focuses the far-UVC illumination emitted from the far-UVC illumination source;

wherein the visible illumination source, when powered, emits visible illumination in the same direction as the far-UVC illumination source emits far-UVC illumination, and wherein the emitted visible illumination is emitted from the handheld portable device as visible crosshairs that illuminate an area that the far-UVC illumination irradiates;

wherein the visible crosshairs are in focus when the handheld portable device is an optimal distance from the surface to be sanitized, and wherein the visible crosshairs are not in focus when the handheld portable device is not at an optimal distance from the surface to be sanitized; and

wherein responsive to actuation by a user of the user input, the visible illumination source and the far-UVC illumination source are powered and the far-UVC illumination source emits far-UVC illumination to sanitize the surface or space at which the visible crosshairs are focused.

16. The handheld device of claim 15 , wherein the far-UVC illumination source emits far-UVC illumination having a wavelength between 220 nm and 225 nm.