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Chapter 2—Functional Description
Model 330, 340SC and 370SC Service Manual 2-73
light. The vertically polarized light then passes through the prism to the projector
lens. The ILA
®
assembly combines the input signal from the CRT with the high
intensity light from the arc lamp. Thus, the brightness of the screen image does
not depend on the brightness of the CRT but on the light from the xenon arc lamp.
(A more detailed explanation of the ILA
®
assembly is in Section 2.8 at the end of
this chapter.)