A display apparatus includes a liquid crystal panel, and a light source apparatus configured to irradiate the liquid crystal panel with light. The light source apparatus includes a plurality of light sources configured to emit blue light, and a reflective sheet with a plurality of holes through which the light passes. The plurality of holes includes a first hole disposed at an edge portion of the reflective sheet, and a second hole in which a distance from an edge of the reflective sheet to the second hole is greater than a distance between the edge of the reflective sheet and the first hole and a plurality of first light conversion patches arranged along a circumference of a circle surrounding the first hole on the reflective sheet, and a plurality of second light conversion patches arranged along a circumference of a circle surrounding the second hole on the reflective sheet

Exemplary wearable device(s) (e.g., mask(s)) according to exemplary embodiments of the present disclosure can be provided. For example, the wearable device(s) can comprise an inner layer, an outer layer and a filter layer, and The inner layer, the outer layer and/or the filter layer can include one or more upconverting nanoparticles. Further, exemplary method(s) according to the exemplary embodiments of the present disclosure can be provided for disinfecting a wearable device. The exemplary method(s) can comprise, e.g., providing the wearable device comprising an inner layer, an outer layer and a filter layer, in which the inner layer, the outer layer and/or the filter layer can include one or more upconverting nanoparticles. In the exemplary method, it is possible to apply infrared radiation (IR) to the upconverting nanoparticle(s) to generate ultraviolet (UV) radiation so as to disinfect the wearable device.

A light generation and light distribution method. The method includes generating laser light with a semiconductor laser or an array of semiconductor lasers at a generation location. Light generated by the semiconductor laser is guided to a frequency converter. Light converted by the frequency converter is directed to a plurality of distribution locations. The distribution locations can be remote or local. A light generation and light distribution system includes a semiconductor laser or array of lasers at a generation location. A frequency-conversion optical component modifies the wavelength of the radiation generated by the semiconductor laser to one or more desired wavelengths for disinfection, medical therapy, photochemical processes, and/or lighting. Light extraction and distribution optical components extract from the distribution system a portion of the light in the system so as to provide for one or more of disinfection, medical therapies, general or background lighting, and photochemical processes.

An emission enhancement structure having at least one energy augmentation structure; and an energy converter capable of receiving energy from an energy source, converting the energy and emitting therefrom a light of a different energy than the received energy. The energy converter is disposed in a vicinity of the at least one energy augmentation structure such that the emitted light is emitted with an intensity larger than if the converter were remote from the at least one energy augmentation structure. Also described are various uses for the energy emitters, energy augmentation structures and energy collectors in a wide array of fields, including photobiomodulation for treatment of conditions, disorders, or diseases.

An emission enhancement structure having at least one energy augmentation structure; and an energy converter capable of receiving energy from an energy source, converting the energy and emitting therefrom a light of a different energy than the received energy. The energy converter is disposed in a vicinity of the at least one energy augmentation structure such that the emitted light is emitted with an intensity larger than if the converter were remote from the at least one energy augmentation structure. Also described are various uses for the energy emitters, energy augmentation structures and energy collectors in a wide array of fields, particularly medical uses for treatment of cell proliferation disorders.

An emission enhancement structure having at least one energy augmentation structure; and an energy converter capable of receiving energy from an energy source, converting the energy and emitting therefrom a light of a different energy than the received energy. The energy converter is disposed in a vicinity of the at least one energy augmentation structure such that the emitted light is emitted with an intensity larger than if the converter were remote from the at least one energy augmentation structure. Also described are various uses for the energy emitters, energy augmentation structures and energy collectors in a wide array of fields, including various adhesives applications.

An emission enhancement structure having at least one energy augmentation structure; and an energy converter capable of receiving energy from an energy source, converting the energy and emitting therefrom a light of a different energy than the received energy. The energy converter is disposed in a vicinity of the at least one energy augmentation structure such that the emitted light is emitted with an intensity larger than if the converter were remote from the at least one energy augmentation structure. Also described are various uses for the energy emitters, energy augmentation structures and energy collectors in a wide array of fields, especially in the field of solar cells and other energy conversion devices.

A display apparatus includes a liquid crystal panel; a plurality of light sources configured to emit blue light; a reflective sheet including four edge portions and a center portion, wherein a plurality of holes are disposed on the reflective sheet, the plurality of holes includes a first hole and a second hole on each of the four edge portions of the reflective sheet, each of the four edge portions includes an edge of the reflective sheet, the first hole is disposed at a first distance from the edge of the reflective sheet, and the second hole is disposed at a second distance from the edge of the reflective sheet, wherein the second distance is greater than the first distance; and a plurality of light conversion dots.

A display device includes a liquid crystal panel; a plurality of light sources configured to emit blue light; and a reflective sheet including a first hole and a second hole on a same edge portion of the reflective sheet, wherein the edge portion includes an edge of the reflective sheet, the first hole is disposed at a first distance from the edge of the reflective sheet, and the second hole is disposed at a second distance from the edge of the reflective sheet, wherein the second distance is greater than the first distance. First light conversion dots are disposed around the first hole of the reflective sheet, and second light conversion dots are disposed around the second hole of the reflective sheet, wherein a size of each of the first light conversion dots is greater than a size of each of the second light conversion dots.

An integral optical resonant cavity for frequency conversion is provided. The integral optical resonant cavity includes: a housing, a cavity-length adjustment device, a temperature control device and a nonlinear crystal provided in the temperature control device; a first plano-concave mirror and a second plano-concave mirror included in the cavity-length adjustment device and a nonlinear crystal form the optical resonant cavity; and light passes through the first plano-concave mirror, the nonlinear crystal and the second plano-concave mirror sequentially. The stability of the length of the optical resonant cavity is improved through an integral design thereof, and the stability of the temperature of the nonlinear crystal in the integral optical resonant cavity is improved through the temperature control device, thereby stably controlling relative phases between light fields for the frequency conversion in the resonant cavity. Meanwhile, the length of the integral optical resonant cavity is accurately controlled through the cavity-length adjustment device.