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.

Embodiments of a live broadcast lighting system are disclosed. In one example embodiment, the live broadcast lighting system includes a light emitting apparatus, a control box being connected to the light emitting apparatus, and a device holder coupled to the control box. The device holder can be configured to releasably retain a video recording device. The control box can include an electronic control circuit configured to control rotation of the light emitting apparatus. The device holder can be configured to be rotatable independent of the rotation of the light emitting apparatus.

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.

The present disclosure provides a lighting device including a first lighting unit including a plurality of first light sources arranged on a first flat or curved surface, and configured to implement lighting of a first illuminance and of a first color, a second lighting unit including a plurality of second light sources arranged on a second flat or curved surface at least partially inclined with respect to the first lighting unit, the second lighting unit surrounding at least a part of the first lighting unit, and configured to implement lighting of a second illuminance at least partially different from the first illuminance and of a second color, at least one opening formed to penetrate through the first lighting unit, and at least one third lighting unit including a plurality of third light sources arranged on a third flat or curved surface, and configured to implement lighting of a third illuminance higher than the first illuminance and of a third color through the opening. The second lighting unit may be configured to implement the lighting of the second illuminance and the second color in conjunction with the third lighting unit.

A light fixture may include a casing and a support assembly configured to support and move the casing. The light fixture may include a light source assembly housed inside the casing and configured to generate visible light radiation of different colours. The light fixture may further include a control device configured to control the light source assembly based on the position or the movement of the casing or based on a parameter correlated to the position or the movement of the casing.

The illumination module for emitting light (5) can operate in at least two different modes, wherein in each of the modes, the emitted light (5) has a different light distribution. The module has a mode selector (10) for selecting the mode in which the module operates, and it has an optical arrangement. The arrangement includes—a microlens array (LL1) with a multitude of transmissive or reflective microlenses (2) which are regularly arranged at a lens pitch P (P1);—an illuminating unit for illuminating the microlens array (LL1). The illuminating unit includes a first array of light sources (S1) operable to emit light of a first wavelength L1 each and having an aperture each. The apertures are located in a common emission plane which is located at a distance D (D1) from the microlens array (LL1). In a first one of the modes, for the lens pitch P, the distance D and the wavelength L1 applies P2=2.Math.L1.Math.D/N wherein N is an integer with N≥1.

A system, comprising a light source configured to emit light; and a first component including a reflective surface configured to reflect the light as a plurality of light elements that are reflected onto a second component. The reflective surface may include a plurality of mirrors. Each mirror, of the plurality of mirrors, may be configured to reflect a portion of the light as a respective light element of the plurality of light elements. A first light element, of the plurality of light elements, may be reflected onto a first location of the surface. A second light element, of the plurality of light elements, may be reflected onto a second location, of the surface, that is different than the first location.

Alight emitting diode (LED) filament lamp with a variable color temperature includes a lamp cap, a mounting piece connected to the lamp cap, a casing connected to the mounting piece, a stem arranged in the casing, an LED filament arranged on the stem, a dual in-line package (DIP) switch connected to the stem, and a driving power supply connected to the DIP switch. The LED filament includes a substrate, a first pin arranged at one end of the substrate, a second pin arranged at the other end of the substrate. The LED filament is of an integral structure. Through the arrangement of the DIP switch or a control switch, the first pin and the second pin can switch a positive pole or a negative pole of an output terminal of the driving power supply, thereby realizing switching of different color temperatures.

An illumination device includes a plurality of light sources arranged in at least a first group of light sources having one or more light sources and a second group of light sources having one or more light sources and further includes one or more light collectors, each being arranged for collecting light from one or more light sources from the first group of light sources and for converting the collected light into one or more light beams. The first and second groups of light sources are each individually controllable. The first and second groups of light sources are both arranged for emitting light from a space on one side of the one or more light collectors. The illumination device is arranged so that light emitted from the second group of light sources through the one or more light collectors defines a pattern comprising one or more elongated elements.

The present invention involves a programmable or static multiwavelength LED lighting fixture that is capable of emitting wavelengths of light both for visual perception and other key physiological processes. The lighting fixture produces emitted spectra, wherein one portion of the emitted spectra serves visual perception and at least one portion of the emitted spectra is selected from the group consisting of 290-315 nm; 360-400 nm; 470-490 nm; and 600-1400 nm.