Provided is a light source system, including: a light-emitting module configured to emit first light along a first light path and second light along a second light path; a wavelength conversion device configured to receive the first light and emit excited light with a color different from the first light; and a compensation device configured to guide the second light and adjust its luminous intensity distribution so that the luminous intensity distribution of the second light exiting from the compensation device is substantially identical to the excited light. The compensation device includes a compensation element configured to adjust luminous intensity distribution of a light beam so that an emergent light beam of the compensation element has reduced overall luminous intensity compared with an incident light beam. The second light exiting from the compensation device is combined with the excited light to form third light.

A lighting system includes a lighting device within a luminaire that generates a controllable light output. The lighting system also includes an input device within the luminaire. The input device includes a first selection mechanism communicatively coupled to the lighting device. The first selection mechanism receives a first input to transition the lighting system between a set of control states. The input device also includes a second selection mechanism communicatively coupled to the lighting device. The second selection mechanism receives a first rotational input to control a light intensity output of the lighting device or a correlated color temperature of the lighting device.

A lighting system includes a lighting device within a luminaire that generates a controllable light output. The lighting system also includes an input device within the luminaire. The input device includes a first selection mechanism communicatively coupled to the lighting device. The first selection mechanism receives a first input to transition the lighting system between a set of control states. The input device also includes a second selection mechanism communicatively coupled to the lighting device. The second selection mechanism receives a first rotational input to control a light intensity output of the lighting device or a correlated color temperature of the lighting device.

A ceiling lamp includes a main unit and a wall plate detachably mounted on a top of the main unit. The main unit is provided with a membrane button for regulating a color temperature of the ceiling lamp. The membrane button is arranged on a bottom face or an outer face of the main unit. The main unit includes a lamp body, and a lamp disk mounted on the lamp body from bottom to top. The lamp body includes a rear cover, a heatsink disk, a light emitting diode (LED) driver, an LED module, and a light output module. The heatsink disk is mounted on a bottom of the rear cover. The LED module is mounted between the heatsink disk and the light output module. The LED driver is connected with the LED module.

A ceiling lamp includes a main unit and a wall plate detachably mounted on a top of the main unit. The main unit is provided with a membrane button for regulating a color temperature of the ceiling lamp. The membrane button is arranged on a bottom face or an outer face of the main unit. The main unit includes a lamp body, and a lamp disk mounted on the lamp body from bottom to top. The lamp body includes a rear cover, a heatsink disk, a light emitting diode (LED) driver, an LED module, and a light output module. The heatsink disk is mounted on a bottom of the rear cover. The LED module is mounted between the heatsink disk and the light output module. The LED driver is connected with the LED module.

The present disclosure is directed to an illumination device for providing a divergent illumination. The illumination device comprises a light source for emitting light in a visible spectrum; an output aperture, through which the light emitted from the light source exits the illumination device; and a layer structure. The layer structure comprises a scattering layer of a plurality of nanoscale scattering elements embedded in a host material and is positioned in an optical path of the emitted light that extends between the light source and the output aperture. The layer structure comprises further a pair of areal electrical contact layers, wherein the areal electrical contact layers extend at opposite sides of the scattering layer and are electrically connectable with a power source to generate an electric field across the scattering layer. The divergent illumination provided by the illumination device is characterized by at least one luminous intensity distribution curve having the full width at half maximum of at least 10°.

The present disclosure is directed to a direct-light generator (10) for sun-sky-imitating illumination devices (100) configured for generating natural light similar to that from the sun and the sky, comprising a first emitting surface (22) and an array of light-emitting devices (21) configured to generate from a primary light a direct light (13) which exits the first emitting surface (22) along a direct light direction (15), wherein the direct light (13) exiting the first emitting surface (22) has a luminance profile (Ldirect(x, y, θ, φ)) which has a narrow peak (14) in the angular distribution around the direct-light direction (15) and is uniform across the first emitting surface (22), wherein each light-emitting device (21) comprises a light emitter (24) having an emitting surface and at least a pair of collimation lenses (25,27) illuminated by the light emitter (24), each pair of collimation lenses (25,27) comprising a pre-collimation lens (27) comprising a light inlet surface (27a) facing the light emitter (24) emitting surface and a light outlet surface (27b), the pre-collimation lens (27) being positioned proximal to the light emitter (24) and a collimation lens (25) comprising a light input surface (25a) and a light output surface (25b), the collimation lens (25) being positioned distal from the light emitter (24), the light emitter (24) and the pre-collimation lens (27) being housed in a hollow housing (26) which is internally coated or made of light absorbing material and has at least an aperture where the collimation lens (25) is positioned, wherein the pre-collimation lens (27) of each pair of collimation lenses (25,27) is configured to emit with a substantially angularly constant intensity and to uniformly illuminate a whole light input surface (25a) of the collimation lens (25) of the pair of collimation lenses (25,27) wherein, with the pre-collimation lens having a pre-collimation lens height (b2), and a base of the input surface (25a) of the collimation lens (25) being spaced apart from a base of the inlet surface (27a) of the pre-collimation lens (27) of a lenses distance (h), the ratio (b2/h) between the pre-collimation lens height (b2) and the lenses distance (h) is comprised in the range of 0.2-0.8, more preferably in the range between 0.25-0.75 and even more preferably in the range be

The present disclosure is directed to a direct-light generator (10) for sun-sky-imitating illumination devices (100) configured for generating natural light similar to that from the sun and the sky, comprising a first emitting surface (22) and an array of light-emitting devices (21) configured to generate from a primary light a direct light (13) which exits the first emitting surface (22) along a direct light direction (15), wherein the direct light (13) exiting the first emitting surface (22) has a luminance profile (Ldirect(x, y, θ, φ)) which has a narrow peak (14) in the angular distribution around the direct-light direction (15) and is uniform across the first emitting surface (22), wherein each light-emitting device (21) comprises a light emitter (24) having an emitting surface and at least a pair of collimation lenses (25,27) illuminated by the light emitter (24), each pair of collimation lenses (25,27) comprising a pre-collimation lens (27) comprising a light inlet surface (27a) facing the light emitter (24) emitting surface and a light outlet surface (27b), the pre-collimation lens (27) being positioned proximal to the light emitter (24) and a collimation lens (25) comprising a light input surface (25a) and a light output surface (25b), the collimation lens (25) being positioned distal from the light emitter (24), the light emitter (24) and the pre-collimation lens (27) being housed in a hollow housing (26) which is internally coated or made of light absorbing material and has at least an aperture where the collimation lens (25) is positioned, wherein the pre-collimation lens (27) of each pair of collimation lenses (25,27) is configured to emit with a substantially angularly constant intensity and to uniformly illuminate a whole light input surface (25a) of the collimation lens (25) of the pair of collimation lenses (25,27) wherein, with the pre-collimation lens having a pre-collimation lens height (b2), and a base of the input surface (25a) of the collimation lens (25) being spaced apart from a base of the inlet surface (27a) of the pre-collimation lens (27) of a lenses distance (h), the ratio (b2/h) between the pre-collimation lens height (b2) and the lenses distance (h) is comprised in the range of 0.2-0.8, more preferably in the range between 0.25-0.75 and even more preferably in the range be

The present invention pertains to devices and applications for lamps to produce color mixing effects with a desired color distribution output within a translucent cylindrical housing. More specifically, the invention pertains to a device or devices that utilize a multidirectional light engine constructed in opposite directions with programmed light intensity with a spatial distribution of photons at single or varying wavelengths, which result in a large percentage of those photons entering the translucent cylinder producing a non-linear effect being emitted from the cylinder. Embodiments use two or more coaxial light engines with programmed light intensities producing a variety of non-linear lighting effects, which emit the majority of the light rays in opposing directions within a dedicated color mixing chamber. In some embodiments, the color mixing lighting device comprises two or more coaxial light engines which beam light in a 360 degree radial pattern forming an approximate 110 degree cone.

The present invention pertains to devices and applications for lamps to produce color mixing effects with a desired color distribution output within a translucent cylindrical housing. More specifically, the invention pertains to a device or devices that utilize a multidirectional light engine constructed in opposite directions with programmed light intensity with a spatial distribution of photons at single or varying wavelengths, which result in a large percentage of those photons entering the translucent cylinder producing a non-linear effect being emitted from the cylinder. Embodiments use two or more coaxial light engines with programmed light intensities producing a variety of non-linear lighting effects, which emit the majority of the light rays in opposing directions within a dedicated color mixing chamber. In some embodiments, the color mixing lighting device comprises two or more coaxial light engines which beam light in a 360 degree radial pattern forming an approximate 110 degree cone.