Patent ID: 9664991
Date: 2017-05-30
CPC Classifications: G03B

Claim:
1. A light pollution shielding method for a projector, the projector comprising a projector body, a plurality of lens modules, a lens disassembly sensing module, a light-emitting module and a control module, the projector body comprising a light-permissive aperture, the plurality of lens modules being individually provided for an assembly to the light-permissive aperture of the projector body, the lens disassembly sensing module being disposed in the projector body and corresponding to the light-permissive aperture, the light-emitting module being disposed in the projector body and configured to emit lights toward the light-permissive aperture, the control module being signally connected to the lens disassembly sensing module and the light-emitting module, and the light pollution shielding method comprising steps of: a) configuring the control module to sense, through the lens disassembly sensing module, whether any one of the plurality of lens modules is being disassembled from the light-permissive aperture; and b) configuring the control module to modulate a lighting intensity of the light-emitting module when the control module senses that any of the plurality of lens modules is being disassembled from the light-permissive aperture.