BenQ PB6200 - XGA DLP Projector Service Manual download pdf (Page 91)

Projected

Image

Any screen 1. No adjacent pixels.

2. No bright pixels ( Active Area )

3. <= 1 bright pixel ( SOM )

4. ≤ 4 dark pixels

5. ≤ 6 minor blemishes.

6. No DMD window aperture shadowing on the

Active Area

7. No unstable pixels in Active Area

Notes :

1. Projected blemish numbers include the count for the shadow of the artifact in addition to

the artifact itself, so that the count usually represents a single artifact on the window.

2. No blemish shall be more than 5 inches long or have a total area of more than 5 square

inches on a 60 inch diagonal projected image. ( <= 1/2 inch for Major Blemish tests )

3. During all Table 1 tests , projected images shall be inspected in accordance with the

conditions of inspection specified in Section 3.

4. The rejection basis for all cosmetic DMD defects ( scratches , nicks , particles ) will be

the projected image tests referenced in Table 1.

5. Any other image quality issue not specifically defined in this document shall be

acceptable.

6. Black screens shall not be used as a basis for rejecting DMDs for image quality.

Figure 1. Major Blemish Two Zone Screen

Non Critical Zone

Critical Zone

center 25%

1 2 ... 86 87 88 89 90 91 92 93 94 95 96 ... 121 122

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BenQ PB6200 - XGA DLP Projector Service Manual Page 91