Main Technical Indicators

1.Pupil distance range: 54; 56; 58; 60; 62; 64; 66; 68mm.

2.Axis scale: left scale: 0°~180°~60°; right scale: 180°~0°~120°. The axis scale increases anticlockwise along the axis of the frame, and the marking interval is 5°. 

3.Effective internal aperture of frame: Φ38mm. 

4.The number of lenses that can be inserted into the left and right frames: 4 (the front is 3 and the rear is 1). 

5.Rotation degree of optical axis of lens in inner ring of frame: 360 °. 

6.The nonparallelism between the optical axis of the lens 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.Displacement of the lens relative to the geometric center of the frame: ≤0.3mm. 

9.Adjustable length range of the left and right frame leg: 125~155mm.

(Eight trial frames are in one group.Trial frames in different colors have different pupil distance)

Clinical application:

Combined with optometry lens for refractive examination of human eyes.

Question 1: There are many unqualified products in the market, how can you make sure your quality control? 

Answer: We have past CE, ISO9001, ISO13485.

Question 2: How about your production capacity, and how can you make sure my goods would be delivery timely? 

Answer: Supply Ability: 5000Pairs/month, late delivery refund 0.1%usd per day.

Question 3: How about your design ability? Do you offer OEM service? 

Answer: Yes, we do.We have our own design department, and have offer design service for thousands of cooperative partner.

Question 4: Can i place one small order for first time to test the quality? 

Answer: Small order are also welcomed, and we offer new customers 3% discount for first order and offer free sample.But we need MOQ for mass production.

Question 5: Can I visit your factory? 

Answer: Your are welcome to visit our factory, and we offer free hotel and free car.

http://www.trial-lens-sets.com/