The present invention relates to a disinfecting device, a disinfecting system and a method for control the disinfecting device. The disinfecting device (1) comprising a light bar (10) configured to be mounted to a surface (2) of an indoor space (4), said light bar (10) including at least one light source (100), and at least one optical element (102), configured to shape disinfecting light emitted by the light source(s) (100), such that the light bar (10) is configured to emit disinfecting light in an optical plane (140) extending from a longitudinal axis of the light bar (10); and a slant angle controller (120), configured to, when the light bar (10) is mounted to a surface (2), control a slant angle (S, S2) between the optical plane (140) and the surface (4).

Provided is a lighting device with an inactivation function, the lighting device allowing the addition of an inactivation function while being equal to conventional lighting devices in device size. The lighting device with the inactivation function includes: a UVC light source to emit ultraviolet light having a peak wavelength in a wavelength range from 200 nm to 230 nm; an LED light source to emit visible light; a single unit of an AC/DC converter to convert an AC voltage derived from an external power source into a DC voltage and output the DC voltage; a UVC light source-specific circuit part to convert the DC voltage output from the AC/DC converter into a voltage for lighting the UVC light source; and an LED light source-specific circuit part to convert the DC voltage output from the AC/DC converter into a current for lighting the LED light source.

A multi-band LED disinfection system and a multi-band LED disinfection lamp are provided. The multi-band LED disinfection system comprises a multi-band LED disinfection device; and a control terminal, which is connected to and controls the multi-band LED disinfection device. The control terminal sends a wavelength band control command to the multi-band LED disinfection device according to a disinfection target, and the multi-band LED disinfection device drives LED beads of corresponding wavelength bands. Different wavelength bands of ultraviolet light can be provided to achieve the disinfection of various germs, which leads to better sterilization and disinfection effects. A control module can be used to switch between disinfection of a certain wavelength band and disinfection of superposed wavelength bands. The present disclosure has both a sterilization-and-disinfection function, and an illumination-and-warning function, and non-related personnel can be prevented through the illumination-and-warning function from approaching the lamp during the sterilization and disinfection process.

The invention relates to a disinfection lighting device (10) comprising a first light source (14), wherein the first light source (14) comprises a solid-state light source, wherein the solid-state light source comprises one or more light emitting diodes (14a, 14b), lasers and/or superluminescent diodes; wherein the first light source (14) is configured to generate first light source light having a first spectral power distribution, wherein the first spectral power distribution comprises first light source light (140) in the UV wavelength range and/or visible wavelength range, a second light source (13), wherein the second light source (13) is configured to generate second light source light (130) having a second spectral power distribution different from the first spectral power distribution, wherein the second spectral power distribution comprise in the UV wavelength range, wherein the second light source (13) is arranged at a distance D from the first light source (14), the second light source (13) comprises a light input face (13b) configured in a light receiving relationship with the first light source (13), and the second light source (14) comprises a light exit face (13a), wherein the second light source (13) is transmissive for at least, a major, part of the first light source light (140); and wherein the disinfection lighting device (10) is configured to generate lighting device light comprising the second light source light (130) and the first light source light (140) emanating from the light exit face (13a), wherein the disinfection lighting device (10) comprises a light exit window (12), wherein the light exit face (13a) is the light exit window (12).

LED-based assemblies/systems and methods for infection prevention and treatment are disclosed. The assemblies/systems include an optical head unit including LEDs and LED drivers, the LED drivers configured to control emission of light from the LEDs at one or more selected wavelengths. The assemblies/systems also include a base that selectively and operatively couples to the optical head unit to provide a consistent distance to a target site and prevent light emitted from the LEDs from escaping into an environment surrounding the target site. A phototherapy method for treating tissue includes (i) connecting an optical head unit to a base, (ii) disposing the base to surround a target site; and (ii) controlling output of LEDs in the optical head unit to emit light through the base at one or more selected wavelengths, the base preventing the light emitted from the LEDs from escaping into an environment surrounding the target site.

A lighting system includes a projection surface and a lighting device that projects a projection pattern on the projection surface and includes a light source emitting coherent light and a diffractive optical element diffracting the coherent light to form the projection pattern and including fundamental pieces of diffractive optical element two-dimensionally arranged in a direction parallel to the projection surface. A fundamental period of spatial resolution r (on the projection surface and determined from a specified spatial resolution of the projection pattern at an intersection position of a perpendicular line drawn from a center of certain one of the fundamental pieces of diffractive optical element with respect to the projection surface), an angle ? (a half of an angle projecting the fundamental piece of diffractive optical element at the position), and a wavelength ? of light in the projection pattern projected at the position) satisfy sin ?>?/(6r).

A multi mode aircraft beacon light comprises a mounting portion for mounting the multi mode aircraft beacon light to an aircraft fuselage; at least one visible light source for emitting a visible beacon light output; a plurality of infra-red light sources for emitting an infrared beacon light output; an orientation sensor; and a controller, coupled to the orientation sensor for receiving an orientation sensor signal from the orientation sensor. The controller is configured to determine a mounting orientation of the multi mode aircraft beacon light from the orientation sensor signal, wherein the mounting orientation is indicative of whether the multi mode aircraft beacon light has an upper fuselage mounting position or a lower fuselage mounting position; and to selectively operate the plurality of infrared light sources, depending on the mounting orientation of the multi mode aircraft beacon light.

A lighting system includes a projection surface and a lighting device that projects a projection pattern on the projection surface and includes a light source emitting coherent light and a diffractive optical element diffracting the coherent light to form the projection pattern and including fundamental pieces of diffractive optical element two-dimensionally arranged in a direction parallel to the projection surface. A fundamental period of spatial resolution r (on the projection surface and determined from a specified spatial resolution of the projection pattern at an intersection position of a perpendicular line drawn from a center of certain one of the fundamental pieces of diffractive optical element with respect to the projection surface), an angle ? (a half of an angle projecting the fundamental piece of diffractive optical element at the position), and a wavelength ? of light in the projection pattern projected at the position) satisfy

sin?>?/(6r).

The present invention relates to a light generating device (1) configured to generate device light (9), the light generating device comprising a first laser light source (2), a first frequency doubling element (4), a first luminescent element (6), and a light exit window (7). The first laser light source (2) is arranged for generating first laser light (3) being at least one of violet laser light having a first peak wavelength ?.sub.1 selected from a spectral wavelength range from 380 to 420 nm and blue laser light having a second peak wavelength ?.sub.2 selected from a spectral wavelength range from 420 to 490 nm. The first laser light (3) comprises at least a first portion (3) and a second portion (3). The first frequency doubling element (4) is arranged for converting at least a portion of the first portion (3) of the first laser light (3) emitted by the first laser light source (2) into a first frequency doubled light (5) having a third peak wavelength ?.sub.3 selected from a spectral wavelength range from 190 to 245 nm. The first luminescent element (6) comprises a first luminescent material configured to convert at least a portion of the second portion (3) of the first laser light (3) into a first converted light (8) having a fourth peak wavelength ?.sub.4 in one or more of (a) the green spectral wavelength range and (b) the yellow spectral wavelength range. The light exit window (7) is arranged to release the device light (9) comprising the first frequency doubled light (5) and the first converted light (8).

A sensor device for a transportation device includes a sensing apparatus for sensing first electromagnetic radiation having at least one first wavelength, and a covering device for the sensing apparatus. The covering device contains a fluorescent portion includes a fluorescent dye, which has an absorption spectrum and an emission spectrum. The fluorescent portion is transparent to the first electromagnetic radiation having the first wavelength. The fluorescent portion is configured such that, when irradiated with second electromagnetic radiation having a second wavelength in the absorption spectrum of the fluorescent dye, the fluorescent portion emits third electromagnetic radiation in the emission spectrum. The first wavelength and the second wavelength are different.