United States
China High Quality Optics Trial Lens Frame Pd Adjustable Optical Super Light 50g Free Shipping
Performance indexes:
1) pupil distance adjustment range: binocular pupil distance 48 ~80mm, left or right pupil distance 24 ~40 mm; Minimum scale value 1mm
2) the axial scale of the dividing disk is 130 °~ 0 °~ 120 °on the left and 50 °~ 180 °~ 60 °on the right. The axis scale increases counterclockwise along the axis of the mirror frame. The effective internal aperture of the frame is 5 °
3) Effective internal aperture of mirror frame: 33.5mm
4) Number of lenses inserted when left or right frames are used: 5pieces (front 3 rear 2)
5) the lens rotates around the optical axis in the inner circle of the lens frame is 360 °
6) the lens optics The unparallelism between the axis and the geometric axis of the frame: ≤ 2.5 °
7) the difference between the optical center and the geometric center of the lens: ≤ 0.5mm
8) the displacement of the lens relative to the geometric center of the frame: ≤ 0.3 mm
9) nose Range of adjustment: adjustable length: 0 ≤ 22 mm; Angle: 360 °
10) adjustable length range of left or right foot: 0~20mm
11) weight: 53g
Processing time
According your order list. we will supply delivery time .
Commonly is 5-7 work days after we confirm payment
Shipping time
By Express : 3-7 days . Door to door service
By Air : 3-7 days . (the goods arrival at your local air ports
By sea : 30-40 days (the goods arrival at your local sea ports )
PS : by air or by sea, if you need door to door service, please tell us . we will help you checking the extra door to door cost.
How many months warranty do you provide ?
one year
What should I do if the machine have question ?
For ensuring all the items are in good quality, we will test all products before the packages were sent out. Once the machine have some question, please don't worry. kindly send us some images of the situation , Video and machine series, and explain the question in where . we will supply solution to you deal soon.
What should I do if the spare parts is broken in Warranty ?
If in Warranty, some spare parts broken in the Use. kindly supply picture or video , and machine series number .
We will send the spare parts by express to you soon.. and we bear express cost .
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