Trial frame, Model REDRS300

1, Range of PD adjustments

54mm~72mm, pupillary distance of each specifcation of lens testing frame increase 2mm in turn.

2, Axial calibration on each disc

165°~0°~180°~25° axis graduation line runs counter clockwise along axis graduation line of lens frame, with inerval of graduation line being 5°

3, Inner diameter of lens frame

Φ34mm

4, The Number of lens which can be inserted into left or right lens frame simultaneously

4 pieces

5, Degree that front lens rotates around optic axis inside lens frame

360°

6, Non-parallelism degree between lens' optical axis and lens frame's geometric axis

≤2.5°

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 pad adjustment

up and down direction 4mm.

10, Range of left or right lens frame leg's length adjustment

90mm`99mm, length of specification of trial frame increase 1mm in turn.

11, Maximum interval between left and right lens frame legs

200mm

12, Weight

35.6g~37.4g Weight of specification of trial frame increase 0.2g in turn.