Optical Trail Lens Frame Glasses Universal Adjustable Accessories Optometry Ophthalmologist Test Frame

Features:

1 . Ultra-light optometry frame for comfortable wear.

2 . Adjustable range of PD: About 25~40mm/0.98-1.57inch.

3 . Up to 4 lenses can be inserted on each side.

4 . Adjustable temple length / tilt angle, it can meet your different needs.

5 . Applications: This product is suitable for eyewear inspection in optical shops, hospital ophthalmology, schools, factories and mines, etc.

Specification:

1.The distance adjustment range: the distance between the eyes is about 48 ~ 80mm/1.89-3.15inch, the left or right distance is about 24 ~ 40mm/0.94-1.57inch, the minimum scale value is 1mm/0.04inch.

2. Axis scale of the index plate: left indexing plate 120 ° ~ 0 ° ~ 135 °; right indexing plate 45 ° ~ 180 ° ~ 60 °, (axis scale increases counterclockwise along the frame axis, the interval is 5°).

3. The inner diameter of the frame: Φ32.5mm.

4. The number of lenses that can be inserted into the left or right frame at the same time: 4 pieces.

5. The degree of rotation of the lens around the optical axis in the frame: 360°.

6. The non-parallelism of the optical axis of the lens and the geometric axis of the frame: ≤2.5°.

7. The difference between the optical center of the lens and the geometric center of the frame: ≤0.5mm.

8. The displacement of the lens relative to the geometric center position of the frame: ≤0.3mm.

9. Nose support adjustment range: length: 0 ~ 14mm/0-0.55inch; angle: 0 ° ~ 30 °.

10.Left or right temple length adjustment range: about 98mm ~ 135mm/3.86-5.31inch.

11. The maximum spacing of the left and right temples: 200mm/7.87inch.

Package list:

1 X Trial Frame