What are the quality testing standards and testing items for eyeglasses?
Publish Time: Author: SkyLine Editor
Spectacle inspection content includes
a.Eyeglass lenses b. Top focus deviation c. Lens surface quality d. Optical center horizontal distance deviation e. Optical center horizontal flat side deviation f. Optical center vertical mutual difference g. Durability of eyeglass frames
a.Eyeglass lenses b. Top focus deviation c. Lens surface quality d. Optical center horizontal distance deviation e. Optical center horizontal flat side deviation f. Optical center vertical mutual difference g. Durability of eyeglass frames
B, glasses quality inspection test
The transmission ratio tester uses the grating spectroscopy principle to automatically measure the optical performance index of various lenses from 200 to 1000nm. (sunglasses: light transmission ratio, near/far UV average transmission ratio; resin lenses: light transmission ratio, near/far UV transmission ratio, yellow index; driver's mirror: light transmission ratio, UV transmission ratio and signal light identification; optical glass eyeglass lens blanks: visible light transmission ratio, UV below 330nm). Eyeglasses to comply with ISO8980, EN1836, EN167, ANSIZ80.3, in line with Chinese national standards GB10810.3, QB2457-99, QB2506-2001, QB2659-2004, GB/T14148 mandatory standards of the optical performance indicators.
C. the testing of eyeglass frames
Eyeglass frame testing includes the testing of eyeglass legs, bridge deformation, frame endurance test, frame fatigue resistance test, etc. Qualified eyeglass frames comply with BS EN 12870 standard, through the standard fatigue resistance test on the frame, to ensure that the frame can withstand a certain number of bending can also maintain the original state, to ensure that the frame can resist normal wear and tear, so that the frame can be safely worn for at least 2 years. Eyeglass manufacturers generally have the following eyeglass testing equipment. glasses frame tester is used to test the fatigue resistance of eyeglass frames and frame endurance performance, torsion testing machine is used to test the bridge deformation and durability of eyeglass legs, and the tensile tester (welding pull tester) uses a touch screen control system to drive the T-screw to drive the load sensor up and down to complete the tensile or compression test of the sample to detect how much force is needed to damage the whole glasses frame, etc.
The quality of a pair of processed glasses can directly affect the health of the wearer's eyes! Therefore, each pair of eyeglasses sold in the eyeglasses online store will be strictly tested for quality before shipment
