Planar LC640.480.33-AC manual Optical Features, Viewing Angle, Response Times, Dimming

Optical Features

Viewing Angle

Viewing angles are defined per Figure 10 below:

Figure 10. Viewing Angles.

Normal Line

θ-H

θ-V θ+V where:

θ+H

6 o’clock direction

θ+H	+Horizontal angle (+70)
θ-H	-Horizontal angle (-70)
θ+V	+Vertical angle	(+40)
θ-V	-Vertical angle	(-60)

and R/L and U/D = default

Response Times

The rise response time (from white to black) is 25 ms typical and the fall response time (from black to white) is 45 ms typical. This is shown in Figure 11.

Figure 11. Response Times.

	white	black	white
	100%
Photo-	90%
detector
output
(Relative Value)
	10%
	0%
		τr	τf

τr = Rise (wht to blk): 25 ms typ

τf = Fall (blk to wht): 45 ms typ

time

Dimming

Initial backlight dimming is performed by decreasing tube current, allowing for substantially higher tube life in applications that do not require maximum luminance. The user can adjust the display for the optimum combination of luminance, life, and power consumption for the target application.

LC640.480.33-AC Operations Manual (OM600-01) 19