JVC 250 service manual Optical Path - Inputs, Optical Path - Outputs, Optical Path - Operation

Chapter 4---Optical

Figure 4-5Upper level view of Optical Path (top view).

Optical Path - Inputs

Arc Lamp high intensity white light

Component RGB Image light from each of the ILA®

Optical Path - Outputs

Component RGB polarized light to the ILA®

Output image light to the Projection Lens

Optical Path - Operation

The light travels from the Arc Lamp into the Optical Path (see Figure 4-5). The light reflects off a cold mirror and passes through a light pipe. From the Light Pipe, the light passes through a Condensing Lens .The Condensing Lens also acts as a XY Positioner. The function of the XY Positioner is to aim the light beam down the optical path and center it on the face of the ILA® .

After being positioned by the Condensing Lens, the light then reflects off two more Cold Mirrors, losing more Infrared light. It passes through another Condensing Lens and into the Dichroic Beamsplitter Assembly.

4-8 Model 250 Service Manual