Optoma 23 89601 002 Manual

Optoma Tilbehør til projektor 23 89601 002

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Side 1/2
YMO7 Short Throw Lens
When is a short throw lens used?
A short throw lens creates big images in tight spaces by projecting the largest possible image
from a short distance.
This is very convenient feature as it allows the projector to be placed at a close distance from
the screen, and the projector itself does not become a physical obstacle in the room.
Optoma projectors can cast a 72-inch diagonal image from just eight (8) feet away from the
screen with a short throw lens. The short throw lens is supported by the EP758/9, EP780,
EP747, EP739H, EP770, EP773, and H57/ H27.
(See Tables 1 & 2 for a complete guide to Optoma Short Throw Lens projection distances.)
Environments for a short throw lens:
• Small Home Theater Room Settings
• Classrooms
• Smaller Meeting / Conference Rooms
• Trade Show Booths
Optoma’s short throw lens, item number YM07, provides a larger image from the same
projection distance – up to 20% bigger. It easily attaches to existing projector lens.
Fitting
The screw thread on the zoom lens needs to be exposed by unclipping the plastic cover. This is
the light grey ring on the very end of the lens. Grasp it horizontally and pull away from the
lens.
Make sure the projector lens is clean. Wipe with a lens cleaning cloth, if required. Make sure
the short-throw adapter is clean.
Line up the adapter lens carefully with the standard lens, the threaded part facing towards the
projector. Bring it closer until the threads touch. Turn carefully to screw the adapter on
(holding the projector lens <silver ring> to stop it from turning) ensuring it is not cross-
threaded. It should screw on with minimal effort. If not, the thread is crossed, damaged or
dirty and you should check it.
If it threads smoothly, continue to screw it on - about 3 whole turns, until there is slight
resistance.
Table 1
Normal calculation without Short throw lens of EP780, EP759, EP773, EP739H, EP770, EP747
Projection Distance 1.2 - 12m (4:3 Aspect Ratio)
Projection
Distance (m)
Max. Horizontal
Image Size (m)
Min. Horizontal
Image Size (m)
Max. Screen
Height (m)
Min. Screen
Height (m)
Max
Diagonal
Image
Size (m)
Max
Diagonal
Image
Size (inch)
1.20 0.60 0.50 0.45 0.38 0.75 29.55
2.00 1.00 0.83 0.75 0.63 1.25 49.26
2.50 1.25 1.04 0.94 0.78 1.56 61.57
3.00 1.50 1.25 1.13 0.94 1.88 73.89
4.00 2.00 1.67 1.50 1.25 2.50 98.51
5.00 2.50 2.08 1.88 1.57 3.13 123.14
6.00 3.00 2.50 2.26 1.88 3.75 147.77
7.00 3.50 2.92 2.63 2.19 4.38 172.40
8.00 4.00 3.33 3.01 2.51 5.00 197.03
9.00 4.50 3.75 3.38 2.82 5.63 221.66
10.00 5.00 4.17 3.76 3.13 6.26 246.29
11.00 5.50 4.58 4.14 3.45 6.88 270.91
12.00 6.00 5.00 4.51 3.76 7.51 295.54
For guide purposes only.
Throw ratio are from 2.0-2.4:1
Table 2
Calculation with Short throw lens of EP780, EP759, EP773, EP739H, EP770, EP747 Projection
Distance 1.2 - 12m (4:3 Aspect Ratio)
Projection
Distance (m)
Max. Horizontal
Image Size (m)
Min. Horizontal
Image Size (m)
Max. Screen
Height (m)
Min. Screen
Height (m)
Max
Diagonal
Image
Size (m)
Max
Diagonal
Image
Size (inch)
1.20 0.72 0.60 0.54 0.45 0.90 35.47
2.00 1.20 1.00 0.90 0.75 1.50 59.11
2.50 1.50 1.25 1.13 0.94 1.88 73.89
3.00 1.80 1.50 1.35 1.13 2.25 88.66
4.00 2.40 2.00 1.80 1.50 3.00 118.22
5.00 3.00 2.50 2.26 1.88 3.75 147.77
6.00 3.60 3.00 2.71 2.26 4.50 177.33
7.00 4.20 3.50 3.16 2.63 5.25 206.88
8.00 4.80 4.00 3.61 3.01 6.01 236.43
9.00 5.40 4.50 4.06 3.38 6.76 265.99
10.00 6.00 5.00 4.51 3.76 7.51 295.54
11.00 6.60 5.50 4.96 4.14 8.26 325.10
12.00 7.20 6.00 5.41 4.51 9.01 354.65
For guide purposes only.
Throw ratio are from 1.66-2.0:1

Produkt Specifikationer

Mærke: Optoma
Kategori: Tilbehør til projektor
Model: 23 89601 002

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