Code Reader Working distance
![](/fa/products/assets/img/img_mv-1_sm.jpg)
The distance from a lens to an inspection target is referred to as “working distance”, and an area where a code reader can see at that distance is referred to as “field of view.”
CF26-SR (6.2 mm lens)
Minimum code sizes that can be read in each working distance (unit: mm)
![](img/sec01_feat01.png)
Working distance | Minimum size for 1-D code | Minimum size for 2-D code |
---|---|---|
40 | 0.0508 | 0.0762 |
65 | 0.0508 | 0.1016 |
105 | 0.127 | 0.1778 |
Horizontal view
![](img/sec01_feat02.png)
CF26-LR (16 mm lens)
Minimum code sizes that can be read in each working distance (unit: mm)
Working distance | Minimum size for 1-D code | Minimum size for 2-D code |
---|---|---|
80 | 0.0508 | 0.0508 |
150 | 0.0508 | 0.0762 |
190 | 0.0508 | 0.1016 |
225 | 0.0762 | 0.1016 |
375 | 0.1016 | 0.1778 |
500 | 0.1524 | 0.254 |
1000 | 0.381 | 0.508 |
Horizontal view
![](img/sec02_feat01.png)
CF37-SR (10.3 mm lens)
Working distance in which the code cell size is readable (unit: mm)
Code cell size | Working distance for 1-D code | Working distance for 2-D code |
---|---|---|
0.1524 | 445 | 307 |
0.2032 | 591 | 408 |
0.254 | 738 | 509 |
0.3302 | 958 | 660 |
0.381 | 1104 | 761 |
0.508 | 1471 | 1013 |
Horizontal view
![](img/sec03_feat01.png)
CF37-LR (24 mm lens)
Working distance in which the code cell size is readable (unit: mm)
Code cell size | Working distance for 1-D code | Working distance for 2-D code |
---|---|---|
0.1524 | 1029 | 709 |
0.2032 | 1370 | 944 |
0.254 | 1711 | 1178 |
0.3302 | 2223 | 1530 |
0.381 | 2564 | 1764 |
0.508 | 3417 | 2351 |
Horizontal view
![](img/sec04_feat01.png)