Description

Uses It is suitable for visual acuity test in spectacles shops, department of ophthalmology in hospitals, schools and enterprises. FEATURES 1、Excellent performance and high measuring accuracy. Actuating cam can fix the direction of astigmatism axle. The monocular pupillary distance, the height and fore-and-aft angle of the nose bearer as well as and the height and length of the hanger loop are adjustable. The unique global knob makes the operation more comfortable and easy. 2、5 pieces of trial glasses can simultaneously be put in the left and right optical frames respectively. MAIN TECHNICAL INDEXES 1、Range of PD adjustmentsï&frac*4;šPD of both eyesï&frac*4;š*8ï&frac*2;ž*0mmï&frac*4;›Left or right Pdï&frac*4;š*4ï&frac*2;ž*0mmï&frac*4;›Minimum Calibration Valueï&frac*4;š1mm. 2、Axial calibration on each discï&frac*4;šLeft discï&frac*4;š**5°ï&frac*2;ž0°ï&frac*2;ž**0°ï&frac*4;ŒRight discï&frac*4;š *0°ï&frac*2;ž**0°ï&frac*2;ž*5°ï&frac*4;ŒAxial calibration increases counter clockwise along the lens frame axis, and the calibration distance is 5°. 3、Inner diameter of lens frameï&frac*4;šÎ¦*2.5mm 4、The Number of lens inserted into left or right lens frame simultaneouslyï&frac*4;š5 pieces 5、Degree of lens rotating around optical axis in the lens frameï&frac*4;š**0° 6、Non-parallelism degree between lens&#**9; optical axis and lens frame&#**9;s geometric axisï&frac*4;šâ‰¤2.5° 7、Non-concentricity between lens&#**9; optical center and lens frame geometric centerï&frac*4;šâ‰¤0.5mm 8、Displacement of lens in relation to position of lens frame geometric centerï&frac*4;šâ‰¤0.3mm 9、Range of nose pad adjustmentï&frac*4;švertical adjustment range: 0 ï&frac*2;ž*8mmï&frac*4;ŒLateral angle range: 0°ï&frac*2;ž**0° *0、Range of frame leg&#**9;s length adjustmentï&frac*4;š**0ï&frac*2;ž**5mm *1、Maximum interval between left and right frame legsï&frac*4;š**0mm *2、Weightï&frac*4;š*1g