9
2.1 Throw Ratio 54”±5% Diagonal at 2m, Wide
2.2 Zoom Ratio (tolerance
applied)
> 1.10 : 1
2.3 Distortion
2.3.1 Keystone Distortion <1.0%
2.3.2 Vertical TV Distortion <1.0%
2.3.3 Screen distorsion l W2-W1 l <6mm , l H2 –H1 l <6 mm
2.4 Projection Offset 120% ±5%
2.5 Focus Range
2.5.1 Visible Range 1~8 m
2.5.2 Clearly Focus Range 1.5~6 m(Spec. defined as item 2.6)
2.6 Focus
2.6.1 区 Pattern
(1)If pattern can be uniformly focused, pass!
(2)If not, check 2.6.2
2.6.2 Defocus and Flare
Defocus: R<=3.0; G<=2.5; B<=2.5 pixel
Flare: R<=4.0; G<=3.5; B<=3.5 pixel
Slight flare is not counted as flare.
2.6.3 Focus unbalance
Adjust focus from near to far until one corner clear, difference less
than 70 cm
Center of
49”diagonal area
All other area
R-G <2/3 <1
G-B <2/3 <1
2.7 Lateral Color
R-B <1 <1
2.8 Image Quality
2.8.1 DMD Image Quality See Appendix D
2.8.2 Image Imperfection
See Appendix D Blemish
2.8.3 Image Shadow or Blur
Procedure:
1. 53” (Diagonal at 2m, Wide) image size.
2. Default preset mode “ Dynamic”
3. Full white pattern to check the image.
Let the projector on the desk (don’t move it up/down or left/
right) and just inspect the pattern. It is OK If the shadow or blur
can not be observed obviously.
4. If there is blur obviously, Measure brightness of point A and
brightness of point B. A/B must larger than 80%.detail
description see Appendix A21
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