BenQ PE8700 service manual Appendix a Optical Measurement, Content, General requirements

Appendix A Optical Measurement

This part of the Optical Test Instruction describes those measurements to be executed during the production of the optical engines.

Content:

A1 BRIGHTNESS

A2 BRIGHTNESS UNIFORMITY

A3 BRIGHTNESS DIFFERENCE

A4 ANSI CONTRAST

A5 PEAK CONTRAST

A6 LIGHT LEAKAGE

A7 IMAGE DISTORTION

A8 THROW RATIO

A9 ZOOM RATIO

A10 FOCUS RANGE

A11 COLOR

A12 COLOR UNIFORMITY

A13 OPTICAL KEYSTONE (FIXED)

General requirements

1.The unit shall be allowed to stabilize without further adjustment for a minimum of 10 minutes, at nominal ambient room temperature of 25°C, before making measurements.

2.Measurements shall take place in a light proof room, where the only source of illumination is the projector. Less than 1% of the light on the screen shall be from any source other than the projector.

3.All measurements shall be made on flat screens that do not provide any advantage to the performance of the unit

4.All measurements shall be made at standard color temperature setting, 100% white image (per ANSI IT7.228-1997), except where noted

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