A light fixture, preferably for stage, is provided with a source assembly configured to generate a light beam mainly along an emission direction; and with at least a first optical assembly arranged downstream of the source assembly along the emission direction; the first optical assembly comprising at least one mixing device configured to mix the light beam passing through it; the mixing device comprising an optical mixing element and a moving device configured to move the optical mixing element between a position of non-interference with the light beam emitted by the source assembly and at least one position of interference with the light beam emitted by the source assembly.

An air heating cooling and dehumidification device for maintaining room air at a desired humidity and temperature includes an air to air cross flow heat exchanger (105) formed with cross flow first and second air flow paths (A) and (B), a primary air to liquid heat exchanger (110) in fluid communication with a liquid cooling fluid source (150) for dehumidifying air flow and a secondary air to liquid heat exchanger (115) for reheating the air flow after dehumidification.

An air heating cooling and dehumidification device for maintaining room air at a desired humidity and temperature includes an air to air cross flow heat exchanger (105) formed with cross flow first and second air flow paths (A) and (B), a primary air to liquid heat exchanger (110) in fluid communication with a liquid cooling fluid source (150) for dehumidifying air flow and a secondary air to liquid heat exchanger (115) for reheating the air flow after dehumidification.

The lighting apparatus includes a top cover, a light passing cover, a lens, a light source plate, and a bottom cover. The top cover has a light opening. The light passing cover is fitting the light opening. A diffusion illumination or a light beam is selected by placing the light passing cover or the lens to the top cover respectively. The light source plate is mounted with a LED module. A base plate is used for mounting the light source plate and for connecting to the top cover forming a container space. The base plate has at least one receiver socket for connecting to an external device to electrically connect the LED module.

The lighting apparatus includes a top cover, a light passing cover, a lens, a light source plate, and a bottom cover. The top cover has a light opening. The light passing cover is fitting the light opening. A diffusion illumination or a light beam is selected by placing the light passing cover or the lens to the top cover respectively. The light source plate is mounted with a LED module. A base plate is used for mounting the light source plate and for connecting to the top cover forming a container space. The base plate has at least one receiver socket for connecting to an external device to electrically connect the LED module.

A light bulb apparatus includes a bulb shell, a light source module, a driver, a first cap body, a wireless module and a second cap body. The light source module includes a plurality of LED modules. The first cap body is connected to the bulb shell. The first cap body has a surrounding wall. The surrounding wall includes metal material. Heat of the light source module and the driver is transmitted to the surrounding wall. The wireless module is electrically connected to the driver. The second cap body is connected to the first cap body and an Edison cap. The Edison cap has two electrodes for receiving an external power source from an Edison socket. The second cap body is made of plastic material. The wireless module is located at least partially in the second cap body.

A light bulb apparatus includes a bulb shell, a light source module, a driver, a first cap body, a wireless module and a second cap body. The light source module includes a plurality of LED modules. The first cap body is connected to the bulb shell. The first cap body has a surrounding wall. The surrounding wall includes metal material. Heat of the light source module and the driver is transmitted to the surrounding wall. The wireless module is electrically connected to the driver. The second cap body is connected to the first cap body and an Edison cap. The Edison cap has two electrodes for receiving an external power source from an Edison socket. The second cap body is made of plastic material. The wireless module is located at least partially in the second cap body.

A lighting device includes a prism plate, an anti-glare cup, a housing, a light source board, a heat dissipation assembly, and a lenses plate. The prism plate includes a refraction optical component. For example, make many micro-lenses on a surface of a transparent plastic material or a transparent plastic plate by compression molding, cutting, and injection molding. The combination of these optical lenses adjusts the beam angle of light to fulfill users' needs. The surface material of the anti-glare cup features on preventing visual glare. The housing is used to fasten the prism plate and the anti-glare cup. The light source board is for installation of a LED module. Besides, the heat dissipation assembly carries the light source board. The heat dissipation assembly is connected to the housing.

A lighting device includes a prism plate, an anti-glare cup, a housing, a light source board, a heat dissipation assembly, and a lenses plate. The prism plate includes a refraction optical component. For example, make many micro-lenses on a surface of a transparent plastic material or a transparent plastic plate by compression molding, cutting, and injection molding. The combination of these optical lenses adjusts the beam angle of light to fulfill users' needs. The surface material of the anti-glare cup features on preventing visual glare. The housing is used to fasten the prism plate and the anti-glare cup. The light source board is for installation of a LED module. Besides, the heat dissipation assembly carries the light source board. The heat dissipation assembly is connected to the housing.

An optical module includes an optical transmission device including a heating element, an optical element, an optical cable and an optical coupling unit that performs optical coupling between the optical element and one end of the optical cable; and a container that houses the heating element, the optical element, the optical coupling unit, and a portion including the one end of the optical cable, the container having an opening located between the heating element and the optical coupling unit in a direction in which the heating element and the optical coupling unit are arranged, the container having a portion located closer to the optical coupling unit than the opening in the arrangement direction wherein the portion is sealed.