Ophthalmic Adjustable Metal Test Frame, Optometry Eyeglasses Trial Frame (BL-4480)
Specification
Usage:
This product is suitable for visual inspection in eyewear stores, hospital ophthalmology, schools, factories and mining enterprises, etc.
Features:
Single eye movement range of 25mm to 40mm; PD, both eye height and ear height can be adjusted.
Parameters:
1. The range of pupil distance adjustment: the distance between the eyes is 48-80mm, the distance between the left or right pupils is 24-40mm, and the minimum scale value is 1mm;
2. Graduation dial axis scale: Left graduation dial 120 °~0 °~135 °; Right dial 45 °~180 °~60 °;
The axis scale increases counterclockwise along the axis of the mirror frame, with a scratch interval of 5 °;
3. Mirror frame inner aperture: Φ 32.5mm;
4. Number of lenses that can be inserted into the left or right frame simultaneously: 4;
5. The degree of rotation of the lens around the optical axis within the frame: 360 °;
6. Non parallelism between the optical axis of the lens and the geometric axis of the frame: ≤ 2.5 °;
7. The difference in centrality 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. Nasal support adjustment range: length: 0-14mm; Angle: 0 °~30 °;
10. Left or right mirror foot length adjustment range: 98mm~135mm;
11. Maximum distance between left and right mirror feet: 200mm;
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Specification
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