DS005AKA Datasheet, PDF (5/12 Pages) Sony Corporation – Single-Panel Liquid Crystal Optical Engine for Rear Projectors

DS005AKA
1. Contrast ratio
Contrast ratio (CR) is given by the following formula.
L (White): Surface illuminance of the screen at the input signal amplitude VAC = 0.5V.
L (Black): Surface illuminance of the screen at VAC = 4.5V.
Both luminances are measured by Measurement System I.
CR = L (White)/L (Black)
2. Luminous intensity
In Measurement System I, the average of the illuminance at the nine points specified in the ANSI standards
when the input signal amplitude VAC is 0.5V, multiplied by the projection area, is computed.
L = average illuminance at nine ANSI points (lm/m²) × projection area (m²)
H/3
H/3
H/3
Nine ANSI points: centers of each of the
areas obtained by dividing
the effective display area
into nine smaller areas
H
3. Chromaticity
Raster modes of each color are defined by the representations at the input signal amplitude conditions shown
in the table below. Measurement System I uses chromaticity of x and y of the CIE standards here.
Signal amplitude (VAC) applied to each input
R input
G input
B input
R
0.5
4.5
4.5
G
4.5
0.5
4.5
B
4.5
4.5
0.5
(Unit: V)
4. Color shading
In Measurement System I, the maximum values of CIE color differences at the three points in the middle row
of the nine ANSI points, measured at an input signal amplitude VAC of 0.5V, are used to compute the color
shading.
∆u'v' = (u'1 – u'2)² + (v'1 – v2)²
For other electro-optical characteristics, see the LCX021BM specifications.
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