M-10
Specifications Manual
18
9.8.
Scanning from LCD Screen
Codes displayed on LCD screens (brightness of white part 30 cd/m2 or more, contrast ratio 100:1)
can be read.
<Conditions>
Code
: Code for 0.381 mm QR Code specified in Section 9.1
Distance
Ambient light
Angle
LCD screen type
: 65 mm from the front edge of the scanner
: 100 lx or less (on the surface of a barcode)
:
α
= 0°,
β
=
+
15°,
γ
= 0°
: Transmissive (backlight) TFT
Brightness of white parts
Contrast ratio =
Brightness of black parts
* The barcode resolution is the value when displayed on the LCD screen.
* The width of barcode element is an integral multiple of pixel width of LCD screen.
* The reading characteristics may deteriorate due to the specular reflection of LED illumination
when the reflectivity is high.
Figure 14: Reading from LCD screen