JVC 330 Service Manual page 85

Chapter 2—Functional Description
light. The vertically polarized light then passes through the prism to the projector
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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.
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(A more detailed explanation of the ILA assembly is in Section 2.8 at the end of
this chapter.)
Model 330, 340SC and 370SC Service Manual 2-73