![background image](http://html1.mh-extra.com/html/canon/lv-7215u/lv-7215u_service-manual_4073011022.webp)
5. DESCRIPTIONS
5.1 Optics
The lens is a newly designed wide zoom lens, LCD panels with a large aperture ratio
of 0.79" (0.80" for publication) and a 200 Watt UHP lamp giving as very bright image
from a compact package.
●
1.6
×
Wide Zoom Lens
This newly designed class-leading 1.6X wide-angle zoom lens is composed of 11 air-
spaced elements in six-group -++-++ configuration.
It has two aspherical lenses (G2, G10), aspheric on both sides, allowing reduction of
the front lens diameter and reduction of the total number of elements. An anomalous
dispersion element (G9) suppresses color aberrations. The result is very high image
quality.
With the longest zoom ratio in the class, this compact lens allows projection of large
images at close distances with beautiful high resolution and very low color smear.
Only environmentally friendly lead-free glass is used in the lens.
●
Projection Screen Size
These models produce a high-quality 100-inch image at a throw of only 2.5 meters.
The projection distance and screen size relationship is shown in the table below.
* The correct screen size is from 40 to 300 inches. Image quality outside this range is not guaranteed.
●
LCD Panel
These models use a 20mm (0.79") diagonal LCD panel. This super high aperture ratio
type panel gives improved brightness and contrast.
●
Lamp
The projection lamp is a small but bright 200-watt UHP lamp.
The arc* in this lamp is a very short 1mm, the shortest in the 200W class. Combined
with the excellent design of the reflector results in a very compact lamp.
In the LV-5210, which uses the SVGA panels, the output is limited to 185 watt to
achieve the best balance between illumination, heat transfer, and current
consumption.
* Arc length: When the arc length is shortened, the parallel light output increases.
Since there is less light scatter (diffusion), the reflector size can be reduced.
Part 1: General Information
1-13
1 m
25.4 to 40.0
Distance
Screen size
2 m
50.1 to 79.0
3 m
74.8 to 117.9
4 m
99.5 to 156.8
5 m
124 to 196
6 m
149 to 235
7 m
173 to 274
8 m
198 to 313
Model
Resolution
Microlens
LV-7215
XGA
Attached
LV-7210
XGA
None
LV-5210
SVGA
None
Содержание LV-7215U
Страница 9: ...Part 1 General Information ...
Страница 25: ...Part 2 Repair Information ...
Страница 43: ...Part 3 Adjustment ...
Страница 66: ...Part 4 Troubleshooting ...
Страница 77: ...Part 4 Troubleshooting 4 11 4 IC BLOCK DIAGRAMS AD8075 Selector IC201 AN7513 Audio Output IC5601 ...
Страница 78: ...Part 4 Troubleshooting 4 12 AN5870 RGB SYNC SW IC1201 IC5201 BA7078 Sync Separator IC5341 ...
Страница 80: ...Part 4 Troubleshooting 4 14 CXD3536 LCD Driver IC401 FA5502 P F Control IC621 ...
Страница 81: ...Part 4 Troubleshooting 4 15 M62392 M62393 D A IC6271 IC281 ML60851 USB Driver IC9801 ...
Страница 82: ...Part 4 Troubleshooting 4 16 STR Z2156 Power Switching Control IC631 TB1274 Video Decoder IC3101 ...
Страница 83: ...Part 4 Troubleshooting 4 17 TC90A69F Y C Separator IC2101 ...
Страница 84: ...Part 5 Parts Catalog ...
Страница 85: ......
Страница 99: ...Part 6 Electrical Diagrams ...