Specifications & Operation Instructions
1) Range of PD adjustments:
| PD of both eyes |
48 ~ 80mm |
| Left or Right PD |
24 ~ 40mm |
| Minimum graduated value |
1mm |
2) Dividing disc axial graduation
| Left dividing disc |
1200 ~ 00 ~ 1350 |
| Right dividing disc |
450 ~ 1800 ~ 600 |
| Axial graduation increases along the lens frame axis counter clockwise, and the graduated distance is 50. |
3) Inner diameter of lens frame : F32.5mm
4) Number of lens which can be inserted into left or right lens frame simultaneously: 4 pieces
5) Degree of lens rotating around optical axis in the lens frame: 3600
6) Nonparallelism between lens´ optical axis and lens frame's geometric axis： ≤2.50
7) Non-concentricity between lens´ optical center and lens frame geometric center：≤0.5mm
8) Displacement of lens in relation to position of lens frame geometric center：≤0.3mm
9) Range of nose rest adjustment
| Length |
0 ~ 14mm; |
| Angle |
0 degree ~ 30 degree |
10) Range of left or right lens frame leg´s length adjustment： 98 ~ 135mm
11) Maximum interval between left and right lens frame legs： 200mm
