Home>Optical Optometry>Trial Frame & Clip>Trial Frame - TF 4880 A

Trial Frame - TF 4880 A

$36.00

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02281290

Availability: In Stock

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Available for 4 pieces trial lenses to be inserted at each side

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6 other products in the same category:

Black soft ear rests of high skill
Soft nose pad option A, B or C
Available for 4 pieces trial lenses to be inserted at each side

USAGES:

It is suitable for eyesight examination in spectacles shops, department of ophthalmology in hospitals, schools and enterprises.

FEATURES:

Adjustable range of each eye: 25mm～40mm;

PD, Height of eyes and ears are ajustable.

MAIN TECHNICAL INDEXES

1、Range of PD adjustments：

PD of both eyes：48～80mm；Left or right PD：24～40mm；Minimum Calibration Value：1mm.

2、Axial calibration on each disc：

Left disc：120°～0°～135°，Right disc： 45°～180°～60°，Axial calibration increases counter clockwise along the lens frame axis, and the calibration distance is 5.

3、Inner diameter of lens frame：

Φ32.5mm

4、The 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：

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：

Length：0～14mm；Angle：0°～30°

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

98mm～135mm

11、Maximum interval between left and right lens frame legs：

200mm

12、Weight：

72g

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