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Canon LV-X2U/D78-5352 User Manual

Canon LV-X2U/D78-5352
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Part 1: General Information
1-7
4. COMMENTARY
4.1 Optical System
High brightness and high contrast are implemented at a low cost by a newly designed
×1.4 wide zoom lens and an improved LCD panel, combined with the Canon's unique 3P
prisms.
×1.4 wide zoom lens
A wide zoom lens with a short focal length of 20.3 mm and high magnification of ×1.4
is designed as a bright large-aperture projection lens (F1.6).
The optical system has 10 groups of 10 lenses, including 5 groups of zoom lenses.
The number of lenses has been reduced and the zoom lenses have been designed
optimally using a replica aspherical lens for G1 and double-sided aspherical lens for
G9 to suppress distortion aberrations due to widened angles.
All lenses are made from lead-free glass.
LCD panel
The new type of LCD panel has a higher open area ratio than conventional ones by
improving production technologies to increase efficiency of using light.
* Since the wide projection lenses are used, the F value increases, but the light
intensity is the level of the previous model.
3P prism
Like the clear prisms for X1/S1, the 3P prism produces images with uniform color on
the screen.
The cost has been cut down by reducing the number of parts.
Projection screen size
A29 to 200" screen display at the proper projection distance of 1.1 to 8.0 m
(See 6.1 Relationship between screen distance and screen size.)
4.2 Functions
Zoom/focus
The Wide/Tele zoom ratio is 1.4, and the projection size can be changed by manual
zooming within the range.
The focus can be adjusted to the correct point manually.
Monochrome expansion
It is effective when projecting dark images at night scenes or blurred images with a
low contrast.
When this function is turned on, the video signal output is controlled automatically to
maximize the black and white levels of output images.

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Canon LV-X2U/D78-5352 Specifications

General IconGeneral
BrandCanon
ModelLV-X2U/D78-5352
CategoryProjector
LanguageEnglish

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