A light source apparatus according to an embodiment of the present technology includes a first light source module and a second light source module. The first light source module emits first emission light. The second light source module includes a light source unit that generates second emission light, and a switch unit that switches a position of an emission optical axis of the second emission light generated by the light source unit between a first optical axis position for emitting synthetic light of the first emission light and the second emission light and a second optical axis position for separating the first emission light and the second emission light for emission.

A light source apparatus according to an embodiment of the present technology includes a first light source module and a second light source module. The first light source module emits first emission light. The second light source module includes a light source unit that generates second emission light, and a switch unit that switches a position of an emission optical axis of the second emission light generated by the light source unit between a first optical axis position for emitting synthetic light of the first emission light and the second emission light and a second optical axis position for separating the first emission light and the second emission light for emission.

An acoustic structure includes: at least one hollow section defined by a pair of opposed transparent or translucent wall members and a plurality of connecting wall members interconnecting the pair of wall members, and at least one opening portion communicating an interior space inside the hollow section to an exterior space. At least some of the connecting wall members may have colorless or colored transparency or translucence. Further, a mirror surface may be provided on any desired portion of the wall members defining the hollow section. Furthermore, a lighting device may be disposed near the outside or inside of the hollow section. Because light or a scene on the opposite side of the acoustic structure is visible through the transparent or translucent wall member, design quality and usability of the acoustic structure can be enhanced.

The present disclosure relates to the technical field of optics, and discloses a light-emitting module, including: a light-emitting unit layer, including a plurality of light-emitting units, where a light-emitting unit light isolation structure is arranged between two adjacent light-emitting units in part or all of the plurality of light-emitting units. According to the light-emitting module, light emitted by the light-emitting units is prevented from being transmitted in an undesired direction as far as possible by arranging the light-emitting unit light isolation structure between two adjacent light-emitting units in part or all of the plurality of light-emitting units, thereby benefiting improvement of display effect. The present disclosure further discloses a display module, a display screen and a display.

The present disclosure relates to the technical field of optics, and discloses a light-emitting module, including: a light-emitting unit layer, including a plurality of light-emitting units, where a light-emitting unit light isolation structure is arranged between two adjacent light-emitting units in part or all of the plurality of light-emitting units. According to the light-emitting module, light emitted by the light-emitting units is prevented from being transmitted in an undesired direction as far as possible by arranging the light-emitting unit light isolation structure between two adjacent light-emitting units in part or all of the plurality of light-emitting units, thereby benefiting improvement of display effect. The present disclosure further discloses a display module, a display screen and a display.

A plant illumination device may include an elongate body comprising: a light propagating section, a light quenching section coupled to a first end of the light propagating section, and, optionally, a light conducting apex coupled to a second end of the light propagating section. In some embodiments, the light conducting apex acquires light which propagates to the light propagating section. The light propagating section may be positioned in proximity to a non-root portion of a plant and the light quenching section in proximity to a root system of the plant. In some embodiments, the light is prevented from reaching the root system of the plant by the light quenching section. In some embodiments, the light includes sunlight, green light, or red light.

A plant illumination device may include an elongate body comprising: a light propagating section, a light quenching section coupled to a first end of the light propagating section, and, optionally, a light conducting apex coupled to a second end of the light propagating section. In some embodiments, the light conducting apex acquires light which propagates to the light propagating section. The light propagating section may be positioned in proximity to a non-root portion of a plant and the light quenching section in proximity to a root system of the plant. In some embodiments, the light is prevented from reaching the root system of the plant by the light quenching section. In some embodiments, the light includes sunlight, green light, or red light.

A LED lighting device includes LEDs operable to emit light when powered through an electrical path. The LED lighting device includes a housing and a communications module for wireless communication to and from the LED lighting device. An antenna for receives and transmits a wireless signal where the antenna comprises a slot in the housing. A power supply in the electrical path for providing power to the LEDs may be retained in the housing. The communications module may be retained in the housing with the power supply. The housing may form part of the LED lighting device structure such as a reflector surface.

A recessed downlight integrates a light engine assembly with a junction box containing a driver assembly. A single torsion spring is supplied at an end of the light engine assembly remote from its connection to the junction box, while a leaf spring attaches to the junction box near its connection to the light engine assembly, or is alternatively integrated into an extension of the junction box. The leaf spring allows for a high-enough tension to hold the light unit assembly in place in thin sheet metal, while allowing for a low-enough tension to accommodate holding the light unit assembly in place in drywall or a drop ceiling.

A recessed downlight integrates a light engine assembly with a junction box containing a driver assembly. A single torsion spring is supplied at an end of the light engine assembly remote from its connection to the junction box, while a leaf spring attaches to the junction box near its connection to the light engine assembly, or is alternatively integrated into an extension of the junction box. The leaf spring allows for a high-enough tension to hold the light unit assembly in place in thin sheet metal, while allowing for a low-enough tension to accommodate holding the light unit assembly in place in drywall or a drop ceiling.