Lamploc™ Module; Integrator; Cold Mirror Assembly; Contrast Aperture - Christie CP2210 Service Manual

Section 1: Introduction
The lamp is the primary light source for the projector. The lamp can be replaced by a Christie authorized
service technician through a rear access door, without having to remove the reflector assembly. When
necessary, the lamp can be rotated. Lamp position can be adjusted relative to the reflector with a motorized
three-axis LampLOC
page 5-13.
™
LampLOC Module
The electro-mechanical LampLOC
optimize the lamp position relative to the reflector. With the lamp "aimed" properly, the greatest amount of
light will be collected, by the reflectors and used in the optical system. All adjustments are motorized using
three linear actuation driven stepper motors on the LampLOC™ module, controlled by the nearby Intelligent
Motor Control Board (IMCB). Feedback from the light sensor module indicates where the light output is
maximized, terminating the lamp movement. In case of an electronics failure, the motors can be controlled
manually with thumbwheels (service technician required, as the rear panel of the projection head must be
removed). The physical range of adjustment along any axis is approximately ±4mm (0.16").

Integrator

The optical integrator is a precisely aligned solid fused silica pipe. Output from the lamp enters the first end of
the optical integrator as an intense round beam of light that is brightest in the center. As the light beam travels
through the integrator all wavelengths are completely reflected multiple times within the integrator, exiting as a
"homogenized" (uniformly bright) 1.896 rectangle. The integrator also mixes the various colors of the lamp
regions and smooths any flicker caused by the arc instability of the lamp. Light exiting the integrator rod enters
the optical head where it undergoes further treatment before it reaches the single DMD panel at the opposite
end of the light path.

Cold Mirror Assembly

The cold mirror is mounted at an angle to the integrator assembly. It is responsible for removing heat in the
form of non-useful IR and UV from the light beam before it is passed onto the prism assembly.

Contrast Aperture

Located between the two fold mirrors of the illumination system is a fixed contrast aperture, which controls the
diameter of the light beam passing through the system, consequently affecting brightness and contrast.

Fold Mirrors 1 and 2

Fold mirror 1 is positioned between lenses one and two. The second fold mirror is positioned between lenses
four and five. Both mirrors are used to fold the light to direct it to the TIR prism in the light engine.

Total Internal Reflection Prism (TIR)

The TIR prism is responsible for redirecting the light from the relay system at the right angle of incidence to
fully illuminate the DMD panel. This allows the modulated light from the DMD to come back through the
prism and go straight through to the projection lens

Light Engine/DMD Assembly

The three DMDs in the projector are rectangular panels made up of tiny moveable mirrors (also called pixels).
The number of pixels per DMD is determined by the resolution of the light engine. Each DMD is mounted with
its own circuitry and includes liquid cooling blocks. Each panel receives and reflects one primary color of
1-4
mechanism. For lamp replacement instructions, refer to
™
module (a.k.a. lamp adjuster) adjusts the lamp along three axes to
™
5.5.15 Lamp Replacement, on
CP2210 Service Manual
020-100556-04 Rev. 1 (01-2012)