Ultraviolet pathogen disinfection system

A pathogen disinfection system, comprising:

• a UV light source secured to an overhead portion of an interior of a vehicle and configured to emit UV light in at least a downward direction toward a surface of a target location within the interior of the vehicle to at least partially inactivate pathogens exposed to the emitted UV light in the path of the emitted UV light and on the target location, the UV light having a mean peak wavelength between 200-280 nanometers;
• a visible light source configured to emit visible light toward the target location to illuminate the surface of the target location;
• a circuit configured to power the UV light source and the visible light source, wherein the circuit activates both the UV light source and visible light source in a disinfection mode, the visible light source emitting the visible light with a first color or intensity indicating the UV light source is active;
• and
• a photochromic material secured to a seat in the target location, wherein the photochromic material is configured to change from a first color to a second color in response to exposure to the emitted UV light to indicate to a passenger that airborne pathogens in a breathing zone above the seat have been at least partially inactivated.

A pathogen disinfection system, comprising:

• a UV light source secured to an overhead portion of an interior of a vehicle and configured to emit UV light in at least a downward direction toward a target location within the interior of the vehicle to at least partially inactivate pathogens exposed to the emitted UV light in the path of the emitted UV light and on a surface of the target location at the target location, the UV light having a mean peak wavelength between 200-280 nanometers;
• a sensor from the group comprising a temperature sensor configured to output a deactivation signal in response to detecting a human temperature in the path of the emitted UV light and a motion sensor configured to output the deactivation signal in response to detecting motion in the path of the emitted UV light;
• and
• a circuit configured to deactivate the UV light source in response to receiving the deactivation signal from the sensor;
• and
• a photochromic color changing fabric secured to a seat in the target location, wherein the photochromic color changing fabric is configured to change from a first color to a second color in response to exposure to the emitted UV light to indicate to a passenger that airborne pathogens in a breathing zone above the seat have been at least partially inactivated.