LV-S1 (Only different points from the LV-X1 are described below.)
A newly developed high-refractivity 4P color synthesis prism is adopted to minimize
deterioration of picture quality due to the color synthesis prism. A short arc lamp, a
large aperture LCD panel, an illumination optical system and a F1.6 zoom lens suitable
for the LCD panel are used for optimum design to achieve the highest brightness of
1000 ANSI lumen in the 0.7-inch class.
The basic structure of the optical box is almost the same as that of the LV-X1, but the
parts, other than the projection lens and prism unit, are designed optimally to suit the
SVGA LCD panel.
The LV-X1 has a structure called a teletype illumination optical system, in which a
convex lens and a concave lens are arranged in this order to suit the LCD panel with a
microlens. On the other hand, the LV-S1 model has a dedicated structure in which
there is a convex lens, but no concave lens.
●
Large aperture zoom lens: F1.6 (The structure is the same as that of the LV-X1.)
A large aperture F1.6 projection lens suitable for the bright illumination system for
SVGA has been adopted. The optical system has 11 groups of 12 elements. The zoom
has been designed so that four of six groups are moved to minimize aberrations
caused by a large aperture lens.
It is combined with an illumination optical system that supports the SVGA panel to
achieve the top-level brightness of 1000 ANSI lumen in the 0.7" SVGA class.
●
LCD panel
Since the aperture ratio of the SVGA LCD panel is larger than that of the XGA, thus
eliminating the need to use a microlens. The contrast ratio (entirely blank/black) is
350:1.
Part 1: General Information
1-9
Содержание D78-5252
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