There is presented an illumination device (244) comprising a plurality of light sources (103) emitting light along an optical axis (247); a light collector (241) adapted to collect light from the light sources, wherein the plurality of light sources (103) comprises: A first group (404) of light sources comprising a plurality of light sources, which can be driven to emit white light, a second group (405) of light sources comprising a plurality of light sources which can be driven, such as can only be driven, to emit non-white light (such as green light), wherein the plurality of light sources can be driven so that a total D.sub.uv value of light emitted from the illumination device is closer to zero than each of a first D.sub.uv value of light emitted from the illumination device originating from the first group (404) of light sources and a second D.sub.uv value of light emitted form the illumination device originating from the second group (405) of light sources, and a luminous efficacy of the second group (405) of light sources is higher than a luminous efficacy of the first group (404) of light sources.

Disclosed herewith is a night lamp having a flexible upper cover, a base ring, a bottom cover, and a light-emitting assembly. The base ring is configured to be in engagement with the upper cover and the bottom cover at the same time, forming a complete sphere.

This application discloses a microphone that includes a handle portion, a control portion, and a microphone head that are connected in sequence. The control portion includes a first circuit board and multiple light-emitting assemblies arranged along a perimeter of the control portion. The first circuit board is electrically connected to the multiple light-emitting assemblies for controlling the multiple light-emitting assemblies to emit light in a preset light-emitting mode. In the solution of this application, multiple light-emitting assemblies are arranged in the control portion, so that when in use, the color of the light and the brightness of the light-emitting assembly can be automatically changed according to the microphone song or through a control button, so that the multiple light-emitting assemblies of the microphone can illuminate in a preset manner.

This application discloses a microphone that includes a handle portion, a control portion, and a microphone head that are connected in sequence. The control portion includes a first circuit board and multiple light-emitting assemblies arranged along a perimeter of the control portion. The first circuit board is electrically connected to the multiple light-emitting assemblies for controlling the multiple light-emitting assemblies to emit light in a preset light-emitting mode. In the solution of this application, multiple light-emitting assemblies are arranged in the control portion, so that when in use, the color of the light and the brightness of the light-emitting assembly can be automatically changed according to the microphone song or through a control button, so that the multiple light-emitting assemblies of the microphone can illuminate in a preset manner.

An organic light-emitting diode comprising an organic layer sequence, a radiation exit area and an encapsulation. The organic layer sequence comprises at least one radiation-emitting region which generates electromagnetic radiation in the spectral range from infrared radiation to UV radiation during operation. The radiation exit area is structured, so that the electromagnetic radiation has a directional emission profile. The encapsulation forms a seal of the organic layer sequence against environmental influences.

An organic light-emitting diode comprising an organic layer sequence, a radiation exit area and an encapsulation. The organic layer sequence comprises at least one radiation-emitting region which generates electromagnetic radiation in the spectral range from infrared radiation to UV radiation during operation. The radiation exit area is structured, so that the electromagnetic radiation has a directional emission profile. The encapsulation forms a seal of the organic layer sequence against environmental influences.

According to one embodiment, an illumination system includes a plurality of white light sources that satisfies −0.2≦[(P(λ)×V(λ))/(P(λmax1)×V(λmax1))−(B(λ)×V(λ))/(B(λmax2)×V(λmax2))]≦+0.2 where P(λ) is an emission spectrum of a white light source having a specific color temperature, B(λ) is an emission spectrum of black body radiation having a corresponding color temperature, V(λ) is a spectrum of spectral luminous efficiency, λmax1 is a wavelength at which P(λ)×V(λ) becomes maximum, and λmax2 is a wavelength at which B(λ)×V(λ) becomes maximum. The respective white light sources have different color temperatures, and light from the respective white light sources is irradiated from different directions to a target.

According to one embodiment, an illumination system includes a plurality of white light sources that satisfies −0.2≦[(P(λ)×V(λ))/(P(λmax1)×V(λmax1))−(B(λ)×V(λ))/(B(λmax2)×V(λmax2))]≦+0.2 where P(λ) is an emission spectrum of a white light source having a specific color temperature, B(λ) is an emission spectrum of black body radiation having a corresponding color temperature, V(λ) is a spectrum of spectral luminous efficiency, λmax1 is a wavelength at which P(λ)×V(λ) becomes maximum, and λmax2 is a wavelength at which B(λ)×V(λ) becomes maximum. The respective white light sources have different color temperatures, and light from the respective white light sources is irradiated from different directions to a target.

A patient warming system for stabilizing and/or heating and cooling a patient includes a plurality of solid-surface sections arranged for attachment to a surgical table and a warming pad layer comprising a plurality of warming pads configured for removable connection to the plurality of solid-surface sections. At least one of the plurality of solid-surface sections includes a power connector for connection to an external power source. Each warming pad of the plurality of warming pads includes a foam insulation layer, a distributed heating element layer having a warming-pad power connection for connection to the power connector, an isothermal layer, and a flexible waterproof layer. Power supplied to the warming-pad power connection of the distributed heating element layer of the respective warming pad can be used to provide a user-selected uniform temperature over the surface of the flexible waterproof layer in order to prevent hot spots.

A patient warming system for stabilizing and/or heating and cooling a patient includes a plurality of solid-surface sections arranged for attachment to a surgical table and a warming pad layer comprising a plurality of warming pads configured for removable connection to the plurality of solid-surface sections. At least one of the plurality of solid-surface sections includes a power connector for connection to an external power source. Each warming pad of the plurality of warming pads includes a foam insulation layer, a distributed heating element layer having a warming-pad power connection for connection to the power connector, an isothermal layer, and a flexible waterproof layer. Power supplied to the warming-pad power connection of the distributed heating element layer of the respective warming pad can be used to provide a user-selected uniform temperature over the surface of the flexible waterproof layer in order to prevent hot spots.