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LCX034ALT

<Electro-optical Characteristics Measurement>

• Measurement system I

• Measurement system II

Luminance

Meter

Measurement

Equipment

Light Detector

Measurement

Equipment

Screen: Made by Sony (VPS-120FH: Gain 2.8, Glass Beaded Type) or equivalent

Projection lens: Focal distance 80mm, F1.9

Light source: 155W metal Haloid arc lamp (Color temperature 7500K ± 500)

(

× 24, Sensor area: 7mmφ)

Polarizer: Side of incidence – Nitto Denko’s EG-1224DU or Polatechno’s SKN-1824ZT or equivalent

Side of output light – Polatechno's SHC-128 or equivalent

Optical fiber

LCD panel

Light receptor lens

Drive Circuit

Light

Source

Basic measurement conditions

(1) Driving voltage

VVC = 7.0V, Vcom = 6.5V

(2) Measurement temperature

25°C unless otherwise specified.

(3) Measurement point

One point in the center of the screen unless otherwise specified.

(4) Measurement systems

Two types of measurement systems are used as shown below.

(5) Video input signal voltage (Vsig)

LCD Projector

Approx. 2000mm

1. Contrast Ratio

Contrast Ratio (CR) is given by the following formula (1).

L (White)

CR =

... (1)

L (Black)

Both luminosities are measured by System I.