Abstract: The invention discloses a positioning light beam emission system, a method and an indoor positioning system. A positioning space includes a plurality of positioning sub-spaces. A plurality of positioning light beam emission devices are fixed at predetermined positions in the plurality of positioning sub-spaces, respectively, and the positioning light beam emission devices are used for sweeping positioning light beams toward the respective positioning sub-spaces in which they are located with a predetermined sweeping cycle and at a predetermined angular velocity. The positioning light beam has a linear cross section and is rotated about a sweeping rotation axis, and the sweeping rotation axis is not perpendicular to an extending direction of the linear cross section.

Abstract: The invention discloses a positioning light beam emission system, a method and an indoor positioning system. A positioning space includes a plurality of positioning sub-spaces. A plurality of positioning light beam emission devices are fixed at predetermined positions in the plurality of positioning sub-spaces, respectively, and the positioning light beam emission devices are used for sweeping positioning light beams toward the respective positioning sub-spaces in which they are located with a predetermined sweeping cycle and at a predetermined angular velocity. The positioning light beam has a linear cross section and is rotated about a sweeping rotation axis, and the sweeping rotation axis is not perpendicular to an extending direction of the linear cross section.

Abstract: The invention discloses a positioning light beam emission system, a method and an indoor positioning system. A positioning space includes a plurality of positioning sub-spaces. A plurality of positioning light beam emission devices are fixed at predetermined positions in the plurality of positioning sub-spaces, respectively, and the positioning light beam emission devices are used for emits, in a sweeping manner,ing positioning light beams toward the respective positioning sub-spaces in which they are located with a predetermined emits, in a sweeping manner,ing cycle and at a predetermined angular velocity. The positioning light beam has a linear cross section and is rotated about a emits, in a sweeping manner,ing rotation axis, and the emits, in a sweeping manner,ing rotation axis is not perpendicular to an extending direction of the linear cross section.

Abstract: The present invention discloses methods and devices for transmitting/obtaining information by visible light signals.