作者: Tien L. Lo
DOI:
关键词: Beam (structure) 、 Projector 、 Controller (computing) 、 Spring (mathematics) 、 Laser pointer 、 Optics 、 Electrical engineering 、 Printed circuit board 、 Microphone 、 Engineering 、 Base (geometry)
摘要: A laser pointer comprised of a projector, light spot controller, base, telescopic stick, stick supporting spring plate, concealed microphone, generating PC board, sliding switch knob, an upper cover, switching control hook, and witch, wherein rotating said projector causes to be moved leftward or rightward permitting small big projecting hole aligned with for passing beam produced by Board; plate keeps maintained off before pressing down knob so as prevent error triggering.