VARILITE VL4 - Location of Major Luminaire Components; Head Components

C
HAPTER
1. I
NTRODUCTION
1-13
02.9628.0010 CONFIDENTIAL
7-Oct-97
1.4 Location of Major Luminaire Components
1.4.1 Head Components
Ref.
No. Name Description
1
Dimmer/Filter
/Douser
Assembly
Contains dimming iris for limiting apparent
light beam brightness, magenta dichroic filters,
and douser mechanism for fully obscuring light
beam.
2
Diffuser
Assembly
Contains two sets of five diffuser panels to
obscure light beam to vary apparent focus.
3
Blue/Amber
Bulkhead
Assembly
Contains blue and amber dichroic filters. Two
stepper motors control angle of filters in light
beam. Chemically brightened aluminum
parabolic reflector directs light from arc lamp
forward through color filters, dimming iris,
and douser mechanism.
4
Ignitor Board
Assembly
Develops high-voltage pulse for arc lamp.
5
Lamp Cable
Assembly
Contains high-voltage lamp cables and ground
cable.
6
Yoke Cable
Assemblies
Provide power to yoke termination board via
two 26-pin connectors.
7
Yoke
Termination
Board
Provides motor and sensor wiring connections
to head assemblies.
8
Lamp OSRAM model HTI SE 400W metal halide
arc light source (5000ºK) operates at 400
watts for up to 250 hours.
9
Rear
Bulkhead and
Bulb
Mounting
Assembly
Contains lamp mounting and linear actuator
motor to control focus. Knurled knobs are
used to align bulb in forward direction.
Assembly is removable from luminaire head
using two 1/4-turn fasteners.
Tilt
Mechanism
(Not Shown)
Drives belt driven pulley to tilt luminaire head.
Interconnected to yoke termination board for
power and data.