The relationship between the angle of the barcode scanner and the scanning read rate

Single-line code scanner corner problem: Generally, the single-line scanner has obvious restrictions on the angle of the barcode in the plane of the barcode, such as ± 40 degrees. Is this just because the bar code has a small height, and the corner may be too large to cause a single scan line to pass through? Go through the entire bar code ?? If my understanding is OK, then if the bar height is made long enough, can it be guaranteed to read accurately when the corner is large?

The corner of the barcode scanner you understand is wrong. The corners in the parameters are as described in the figure below.

Like the barcode scanner described in the figure above, its rotation angle is ± 65 degrees, a check mark indicates the correct angle, and a cross mark indicates the wrong angle.

The scanning angle you mentioned and understood is actually a question of scanning techniques. During the scanning process, the following scanning technique principles should be followed:

1) The red aiming beam from the viewfinder should be centered on the bar code.

2) Aim the barcode scanner at the barcode and press the trigger so that the aiming beam is in the middle of the barcode.

3) The closer the barcode scanner is to the barcode, the smaller the aiming beam; the further away the barcode scanner is from the barcode, the larger the aiming beam. If the barcode is small, make the barcode scanner close to the barcode;

4) If the barcode is larger, the barcode scanner should be farther away from the barcode, so that it is easier to read the barcode correctly.