Patent ID: 11859795
Assignee: TENNANT COMPANY
Field: Furniture, games (Other fields)
Classification: CPC F  A | IPC A  F

Claim 15:
16. A light projection mechanism comprising:
a light housing;
light projection processing circuitry supported at the light housing, wherein the light projection processing circuitry includes an input that is configured to couple to a surface maintenance machine controller;
a light emitting element within the light housing and coupled to the processing circuitry;
a projection lens supported at the light housing, the projection lens configured to focus light emanating from the light emitting element; and
a light diffuser positioned to receive light emanating from the light emitting element, wherein the light diffuser includes a diffuser housing, wherein the diffuser housing includes a first diffuser housing end, a second diffuser housing end that is opposite the first diffuser housing end, a channel extending from the first diffuser housing end to the second diffuser housing end, and one or more side walls extending between the first diffuser housing end and the second diffuser housing end, wherein the one or more side walls include a translucent material through which light received from the light emitting element at the light diffuser is output radially from the light diffuser housing, wherein the first diffuser housing end is positioned adjacent the projection lens, and wherein the second diffuser housing end includes an opening defined in the diffuser housing such that a portion of light received from the light emitting element at the light diffuser passes through the channel and vertically out the opening,
wherein the light projection mechanism is configured to project light onto a ceiling surface at a distance of at least fifteen feet from the light projection mechanism.