Abstract: Disclosed are a prism fixing structure of the optical machine and a projection optical machine. The prism fixing structure of an optical machine includes a body and a prism, the body is provided with a slot, a bearing surface and a baffle, and the prism includes a first side edge, a second side edge and a hypotenuse connected end to end; a glue point is provided between the first side edge and the bearing surface, the hypotenuse is fitted with the baffle, and an oblique angle end formed by the second side edge and the hypotenuse is clamped in the slot.

Abstract: The present application discloses a projection light machine including a body and a prism. The body is provided with a slot and a first positioning surface, and the prism includes a first side edge, a second side edge and a bevel edge connected end to end. The second side edge and the bevel edge are enclosed to form a bevel end, and the first side edge is attached to the first positioning surface. The bevel end is clamped in the slot, and the body is provided with a through hole at a bottom surface of the prism. The through hole is filled with adhesive, and the adhesive is bonded to the prism. The size of the through hole is configured to gradually increase from a side close to the prism to a side away from the prism.

Abstract: Systems and methods that permit initial selection of a lighting fixture output characteristic and inhibit later change of the lighting fixture output characteristic are disclosed. Embodiments include one or more devices that inhibit a lighting fixture control switch from being moved between two different positions. In some embodiments the control switch extends through an aperture in the a housing of the lighting fixture and the one or more devices are inserted into the aperture and embrace the control switch in one of the control switch's operational positions. In some embodiments the configuration of the apertures and the devices permits the devices to be inserted into the apertures in a single orientation. Some embodiments include devices with an outer surface that defines the switch embracing portion, and some embodiments include devices that are difficult to remove by hand after insertion into the aperture.

Abstract: A luminaire includes a first plurality of lighting elements, a housing, and a first lightguide. The housing includes a body and first and second edge frames coupled with the body. The first and second edge frames are positioned on opposing sides of the body and are separated by a first distance. The first plurality of lighting elements is further positioned on the first edge frame. The first lightguide is positioned along the first edge frame in proximity to the first plurality of lighting elements and is configured to receive light from the first plurality of lighting elements. Further, the first lightguide extends a second distance along a plane toward the second edge frame, with the second distance being less than the first distance.

Abstract: An illustrative light fixture provides an emitter housing and a driver housing in a single fixture with an airflow channel defined between the emitter and driver housings. The airflow channel minimizes thermal conduction between the emitter and driver housings, and maximizes thermal convective cooling for at least one of the emitter housing and driver housing. The emitter housing includes vertical fins extending into the airflow chamber. The left and right sides of the emitter and driver housings define top and bottom edges that are respectively coplanar with the top and bottom edges of the vertical fins.

Abstract: Systems and methods that permit initial selection of a lighting fixture output characteristic and inhibit later change of the lighting fixture output characteristic are disclosed. Embodiments include one or more devices that inhibit a lighting fixture control switch from being moved between two different positions. In some embodiments the control switch extends through an aperture in the a housing of the lighting fixture and the one or more devices are inserted into the aperture and embrace the control switch in one of the control switch's operational positions. In some embodiments the configuration of the apertures and the devices permits the devices to be inserted into the apertures in a single orientation. Some embodiments include devices with an outer surface that defines the switch embracing portion, and some embodiments include devices that are difficult to remove by hand after insertion into the aperture.

Abstract: Luminaires that simultaneously illuminate a support surface (for example, a floor) and the surface to which the luminaires are mounted (for example, a ceiling) and methods for manufacturing the same are disclosed. Embodiments include luminaires that divide the light from a single light emitter (which may include one or more light sources such as LEDs) into a portion directed toward the luminaire's mounting surface and a portion directed toward the support surface. Some embodiments utilize a planar light guide with the light emitter mounted adjacent one edge, which in some embodiments is the internal edge of an aperture formed in the planar light guide. In some embodiments, one surface of the light guide includes grooves that internally reflect light toward the support surface while allowing a smaller amount of light to exit the light guide toward the mounting surface, and may be grouped according to the distance separating adjacent grooves.

Abstract: A lighting fixture adapter, methods for manufacturing a lighting fixture adapter, and methods for attaching a lighting accessory to a lighting fixture are disclosed. Embodiments include an adapter that connects to a lighting accessory and allows a user to connect the lighting accessory to a lighting fixture using less twisting than would normally be required when attaching the accessory to the fixture. Embodiments allow a lighting accessory that normally requires multiple rotations to operatively and/or fully engage with a lighting fixture to operatively and/or fully engage with the fixture using a maximum 360 degrees rotation, 180 degrees of rotation, 90 degrees of rotation, or no rotation. Some embodiments include a kit with one or more of: an adapter (which may include a flange), a replacement component for the lighting fixture (which may include a flange for engaging the adapter flange), wires, wiring connectors, an anti-rotation component, and a plug.

Abstract: Luminaires that simultaneously illuminate a support surface (for example, a floor) and the surface to which the luminaires are mounted (for example, a ceiling) and methods for manufacturing the same are disclosed. Embodiments include luminaires that divide the light from a single light emitter (which may include one or more light sources such as LEDs) into a portion directed toward the luminaire's mounting surface and a portion directed toward the support surface. Some embodiments utilize a planar light guide with the light emitter mounted adjacent one edge, which in some embodiments is the internal edge of an aperture formed in the planar light guide. In some embodiments, one surface of the light guide includes grooves that internally reflect light toward the support surface while allowing a smaller amount of light to exit the light guide toward the mounting surface, and may be grouped according to the distance separating adjacent grooves.

Abstract: An illustrative light fixture provides an emitter housing and a driver housing in a single fixture with an airflow channel defined between the emitter and driver housings. The airflow channel minimizes thermal conduction between the emitter and driver housings, and maximizes thermal convective cooling for at least one of the emitter housing and driver housing. The emitter housing includes vertical fins extending into the airflow chamber. The left and right sides of the emitter and driver housings define top and bottom edges that are respectively coplanar with the top and bottom edges of the vertical fins.

Abstract: A lighting fixture adapter, methods for manufacturing a lighting fixture adapter, and methods for attaching a lighting accessory to a lighting fixture are disclosed. Embodiments include an adapter that connects to a lighting accessory and allows a user to connect the lighting accessory to a lighting fixture using less twisting than would normally be required when attaching the accessory to the fixture. Embodiments allow a lighting accessory that normally requires multiple rotations to operatively and/or fully engage with a lighting fixture to operatively and/or fully engage with the fixture using a maximum 360 degrees rotation, 180 degrees of rotation, 90 degrees of rotation, or no rotation. Some embodiments include a kit with one or more of: an adapter (which may include a flange), a replacement component for the lighting fixture (which may include a flange for engaging the adapter flange), wires, wiring connectors, an anti-rotation component, and a plug.

Abstract: A light fixture includes a housing enclosing a light source. The housing defines an opening therethrough. A plug, which is receivable within the opening, includes a face having a central knockout portion. A perimeter of the knockout portion defines an opening size smaller than an opening size of the opening. According to alternative configurations, the plug may be removed from the opening or only the knockout portion may be removed from the plug while leaving a remainder of the plug in the opening. As such, different sized openings through the light fixture housing may be provided for installation of various light fixture accessories.

Abstract: An illustrative light fixture provides an emitter housing and a driver housing in a single fixture with an airflow channel defined between the emitter and driver housings. The airflow channel minimizes thermal conduction between the emitter and driver housings, and maximizes thermal convective cooling for at least one of the emitter housing and driver housing. The emitter housing includes vertical fins extending into the airflow chamber. The left and right sides of the emitter and driver housings define top and bottom edges that are respectively coplanar with the top and bottom edges of the vertical fins.

Abstract: An illustrative light fixture provides an emitter housing and a driver housing in a single fixture with an airflow channel defined between the emitter and driver housings. The airflow channel minimizes thermal conduction between the emitter and driver housings, and maximizes thermal convective cooling for at least one of the emitter housing and driver housing. The emitter housing includes vertical fins extending into the airflow chamber. The left and right sides of the emitter and driver housings define top and bottom edges that are respectively coplanar with the top and bottom edges of the vertical fins.