Acceptance Requirements; Image Quality Specification - BenQ MP611 Product Service Manual

level on the test screen image.
2.11 Gray 10 Screen
The Gray 10 screen is used to test for major light blemishes. All areas of the screen are
colored a Microsoft Paintbrush gray 10 (green, red, and blue set at 10).
NOTE: If linear degamma is not used then the Microsoft Paintbrush values must be
adjusted to match the degamma table being used in order to generate an equivalent gray
level on the test screen image.
2.12 Gray 30 Screen
The Gray 30 screen is used to test for the reset boundary artifact. All areas of the
screen are colored a Microsoft Paintbrush gray 30 (green, red, and blue set at 30).
NOTE: If linear degamma is not used then the Microsoft Paintbrush values must be
adjusted to match the degamma table being used in order to generate an equivalent gray
level on the test screen image.
3.

ACCEPTANCE REQUIREMENTS

3.1 Conditions of Acceptance
All DMD image quality defects must be determined under the following projected image
test conditions:
a. Test Set degamma shall be linear.
b. Test Set brightness and contrast settings shall be set to nominal.
c. The diagonal size of the projected image shall be a minimum of 60 inches.
d. The projection screen shall be 1X gain.
e. The projected image shall be inspected from an 8 feet minimum viewing
distance.
f. The image shall be in focus during all Table 1 tests.
3.2 Test Sequence
Tests shall be run in the sequence listed in Table 1.
SEQ # TEST
1 Major Dark Blemish Blue 60
TABLE 1.

Image Quality Specification

SCREEN ACCEPTANCE CRITERIA
1. ≦ 4 visible dark blemishes are allowed in the
active
area
30