ViewSonic PJ870 Service Manual - Page 62

Specification

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PJ870 7-1 DMD Specification Table I. Physical and Optical Performance Parameters PARAMETER Total height (mirror array) Total width (mirror array) Pixel pitch Differential (device to device) in mirror position relative to mirror position (0,0) Mirror tilt (half angle) Axis of rotation (upper right to lower left, relative to array major axes - Figure 1) Mirror transition time Flatness gradient over total mirror array Active area specular reflectivity Contrast ratio Non-functional n" mirrors Non-functional flat or fl" mirrors Blemish intensity differential within active area (excluding non-functional mirrors) Parallelism of active area to system interface plane Rotational angle between active area and package datum Combined tilt of active area relative to system interface plane Window thickness Window refractive index Window transmissivity (including AR coating, mearsure @420-700 nanometers) Window flatness (@550 nanometers) spherical power/irregularity (astigmatism, etc.) MIN I' NOM( 10.20 14.42 17 9 10 44.0 45 60 225:1 63 250:1 2.87 1.477 98 3.00 1.487 MAX UNIT ii 11 mm um Reiiiark 1 um Note 1 11 degrees Note 2 46.0 degrees 10 us Note 3 0.1 % Note 4 ratio Note 5 mirrors Note 6 mirrors Note 6 N/A Note 7 0.25 iiffi Note 8 0.8 degrees Note 8 0.25 degrees Note 8 3.13 1.497 nan Note 9 Note 9 °/.) Note 9 4/2 fringes Note 9 ViewSonic Corporation 7-2 ] Confidential - Do Not Copy

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PJ870
7-1
DMD
Specification
Table
I.
Physical
and
Optical
Performance
Parameters
PARAMETER
MIN
I'
NOM
(
MAX
UNIT
Reiiiark
Total
height
(mirror
array)
10.20
ii
11
Total
width
(mirror
array)
14.42
mm
Pixel
pitch
17
um
Differential
(device
to
device)
in
mirror
position
relative
to
mirror
position
(0,0)
1
um
Note
1
Mirror
tilt
(half
angle)
9
10
11
degrees
Note
2
Axis
of
rotation
(upper
right
to
lower
left,
relative
to
array
major
axes
-
Figure
1)
44.0
45
46.0
degrees
Mirror
transition
time
10
us
Note
3
Flatness
gradient
over
total
mirror
array
0.1
%
Note
4
Active
area
specular
reflectivity
60
63
Contrast
ratio
225:1
250:1
ratio
Note
5
Non-functional
n"
mirrors
mirrors
Note
6
Non-functional
fl
at
or
fl
"
mirrors
mirrors
Note
6
Blemish
intensity
differential
within
active
area
(excluding
non-functional
mirrors)
N/A
Note
7
Parallelism
of
active
area
to
system
interface
plane
0.25
iiffi
Note
8
Rotational
angle
between
active
area
and
package
datum
0.8
degrees
Note
8
Combined
tilt
of
active
area
relative
to
system
interface
plane
0.25
degrees
Note
8
Window
thickness
2.87
3.00
3.13
nan
Note
9
Window
refractive
index
1.477
1.487
1.497
Note
9
Window
transmissivity
(including
AR
coating,
mearsure
@420-700
nanometers)
98
°/.)
Note
9
Window
fl
atness
(@550
nanometers)
-
spherical
power/irregularity
(astigmatism,
etc.)
4/2
fr
inges
Note
9
7-2
]
ViewSonic
Corporation
Confidential
-
Do
Not
Copy