Opticon NLV-4001 - 8.6 Curvature; 8.7 Scanning from LCD Screen

NLV-4001
2nd
13
SPECIFICATIONS MANUAL
8.6 Curvature
0.26 mm 8-digit JAN
: R ≥ 15 mm
0.26 mm 13-digit JAN
: R ≥ 20 mm
<Conditions>
Bar code
: JAN, resolution 0.26 mm, specified in Section 8.1.
Distance
: 114 mm from the front edge of the scanner
Angle
: α = 0°, β = +15°, γ = 0° (refer to Section 8.5.)
Figure 10: Curvature
* The reading characteristics may deteriorate due to the specula reflection of LED illumination when the reflectivity
is high.
8.7 Scanning from LCD Screen
Bar codes displayed on LCD screens (brightness of white part 30 cd/m
2
or more, contrast ratio 100:1
or more) can be read.
<Conditions>
Bar code
: JAN-13, resolution 0.26 mm specified in Section 8.1.
Ambient light
: 100 lx or less
Distance
: 114 mm from the front edge of the scanner
Angle
: α = 0°, β = 0°, γ = 0°
LCD screen type
: Transmissive (backlight) TFT
Contrast ratio =
Brightness of white parts
Brightness of black parts
* The bar code resolution is the value when displayed on the LCD screen.
* The width of bar code element is an integral multiple of pixel width of LCD screen.
* The reading characteristics may deteriorate due to the specula reflection of LED illumination when the reflectivity
is high.
R
Barcode