What tests are required for glasses? Inspection, factory inspection, certification services.

October 21, 2025

As an important product directly related to visual health, the quality and safety of glasses are closely linked to consumers' visual experience and eye protection. To ensure that glasses products meet industry standards and quality certification requirements, establishing a professional inspection process is of utmost importance. This article will systematically introduce the inspection standards, testing methods, and certification requirements for glasses products, providing a complete quality control guideline for manufacturing enterprises.
1. Appearance Quality Inspection Certification
1. Lens Quality Certification
The surface of the lens has no creases, scratches, bubbles or other defects.
The optical performance meets the requirements of national standards.
The degree of accuracy is strictly controlled within the certified range.
2. Surface treatment certification
The electroplating layer is uniform and complete, without any peeling or blistering.
The electrophoretic coating has uniform color and no impurities or defects.
The screen-printed patterns are clear and durable, and have passed the adhesion test.
3. Labeling and Packaging Certification
The product labeling information is accurate and complete.
The appearance of the eyeglass case and its cover is intact, without any damage or stains.
Consistent with the confirmed color, size and packaging method of the sample
II. Function and Performance Testing and Certification
1. Wearing Comfort Certification
The frame fits the facial contour without causing any压迫感.
The nose pads are adjusted properly and the weight distribution is even.
No adverse reactions after prolonged wearing
2. Structural Rigidity Certification
The temple hinges operate smoothly and there is no looseness.
The lenses are firmly embedded and there is no risk of detachment.
The lens cap is tightly assembled and does not tend to come off easily.
3. Optical performance certification
Use professional instruments to test the accuracy of the degree measurements
The focal length accuracy meets the standard requirements.
The optical center position is accurate without any error.
4. Safety Performance Certification
The eyeglass case offers comprehensive protection.
The impact resistance performance has been certified through testing.
The packaging protection meets the transportation requirements.
III. Packaging Inspection and Certification Standards
The packaging materials meet environmental protection requirements.
The product information is fully and accurately labeled.
The protective measures are in place to ensure the safety of transportation.
Compliant with relevant international trade packaging standards
IV. Testing and Certification Standards System
1. Optical Accuracy Certification
Degree Accuracy: The error range is controlled within ±5 degrees.
Focal length accuracy: 62 ± 1mm (high standard), 62 ± 2mm (ordinary standard)
2. Adhesion Test Certification
Tape Test: Conduct a test to evaluate the firmness of the screen printing using a special adhesive tape.
After being repeatedly pasted and torn off, the pattern did not fall off.
3. Durability Test Certification
Drop Test:
Glasses individual drop test
Overall drop test after packaging
Simulate the transportation and usage process and assess the impact resistance capability during that process.
V. Inspection and Certification Process Standards
1. Sampling Inspection Plan
Implement statistical sampling in accordance with the AQL standard
The key optical performance items are subject to a full inspection system.
Establish a quality traceability management system
2. Test environment requirements
Visual inspection should be conducted under standard lighting conditions.
Use calibrated professional testing equipment
Strictly follow the standard operating procedures
3. Defect Level Determination
Serious Defect: Zero tolerance for any items that affect visual health.
Main defect: Quality issue that reduces the user experience
Minor defect: Minor appearance flaws are within the standard range.
VI. Key Control Matters for Factory Inspection Certification
To ensure that the quality of eyewear consistently meets the certification requirements, during the factory inspection process, the following matters need to be given special attention:
Raw material control: Establish a quality certification system for lens and frame materials
Production process control: Develop specifications for key processes in optical processing and assembly and debugging.
Calibration of testing equipment: Regularly calibrate specialized equipment such as refraction meters and thickness gauges.
Environmental management: Requirements for purification workshop, temperature and humidity control
Personnel qualification certification: Optometrists and quality inspectors must hold certificates to work.
Inspection and Certification Summary
The inspection and factory verification of eyewear products is a highly technical and systematic project that requires comprehensive testing and certification in terms of optical performance, structural safety, and wearing comfort. By establishing a professional inspection process and strict quality standards, enterprises can ensure that eyewear products meet industry certification requirements, providing consumers with safe, comfortable, and high-optical-performance vision products.