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2510332 - February 2009

Offset Projection Lens

Integrator Rod

Folding Mirrors

Relay Optics

Lamp

DMD

Color Wheel

Figure 4. Nontelecentric Optical-System Components

      • 2.2.1

        Advantages of Nontelecentric Architecture Some inherent advantages/features of nontelecentric architecture are:

        • Typically the fewest number and size of optical elements for lowest cost and fewer optical

element losses (higher efficiency), especially when optical offset is required for the application. Even more compact use of space in front of the DMD if a field-lens design is used.

  • Offset angle increases illumination angles to higher overall angles of incidence on the device, (see Figure 5). This typically results in the highest overall contrast. The reasons for this effect are discussed in section 4.1.1.

10

May not be reproduced without permission from Texas Instruments

Copyright 2009 Texas Instruments Incorporated

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