Moving Head Stage Light

Overview

The moving-head stage light is a motorized spotlight used in concert, theatre, and event rigging. A bright LED engine feeds an optical train of color, gobo, and beam-shaping effects, all carried on a pan-and-tilt yoke so the fixture can sweep its beam across a venue under lighting-console control. It speaks DMX512 with RDM for addressing and feedback, and presents typically sixteen to twenty-four control channels.

How it works

The fixture stacks three sections. The Base Assembly is the fixed foundation, housing the Main Control Board that runs DMX/RDM, motion, and effect logic; the Display & Keypad menu panel; the rear I/O panel; and cooling fans. It clamps to truss through omega rigging brackets.

Motion is the Yoke & Pan/Tilt, a two-axis stage with a Pan Drive rotating the whole head 540 degrees at the base and a tilt drive swinging the head across the yoke arms; both use stepper motors, belt reduction, slew or trunnion bearings, magnetic position encoders, and Hall home sensors for closed-loop positioning.

The Optical Head holds the optics. A LED Light Engine of dense white emitters on a heat-pipe sink feeds a reflector, then motorized zoom and focus groups, a Color Wheel of dichroic filters, two Gobo Wheel carousels, a prism, an iris, a frost flag, and a shutter for dimming and strobe. The Power Supply switching PSU feeds the LED, logic, and motor rails.