Optical lenses are transparent elements used to adjust the path of light to achieve imaging, magnification or other optical effects. They are widely used in optical devices such as glasses, microscopes, cameras, telescopes, etc. Optical lenses can be concave lenses, convex lenses or compound lenses with precise curvature and optical properties to meet different needs.
Production process of Optical Lense
Raw material preparation:
Material selection: Use high-quality optical glass or plastic, such as optical glass, synthetic crystal or high refractive index plastic.
Pretreatment: Cut the glass raw material into the required thickness and shape, or heat the plastic material to form.
Cutting and rough processing:
Cutting: Use a glass saw or cutting disk to cut the glass into a circular blank.
Forming: Process the material into a rough lens shape through heating and mold forming technology.
Finishing:
Rough grinding: Use a coarse abrasive (such as a grinding wheel, silicon carbide) to perform preliminary grinding on the lens to remove excess material and form a rough curvature.
Fine grinding: Fine grinding with finer abrasives to achieve the desired precise curvature and surface finish.
Polishing: Use polishing agent to give the lens a final polish to improve transparency and optical quality.
Inspection and Adjustment:
Optical Inspection: Use optical testing equipment to check the curvature, thickness and other optical parameters of the lens.
Adjustment: Fine-tune the lens according to the test results to ensure that it meets the design specifications.
Coating:
Anti-reflective coating: Apply anti-reflective layer to reduce light reflection and increase light transmittance.
Other coatings: Apply functional coatings such as anti-scratch and anti-ultraviolet as needed.
Final Inspection and Packaging:
Quality Inspection: Check whether the lens has flaws, cracks or other defects.
Packaging: The lenses are carefully packaged to prevent damage during transportation and storage.
Protective Measures
Environmental Control:
Cleanroom: Use cleanrooms during the manufacturing process to reduce the impact of dust and other contaminants on the lenses.
Humidity and Temperature Control: Maintain appropriate humidity and temperature to prevent deformation of lens materials or performance.
In the manufacture of lenses, slabs of glass are cut with a glass saw or slitting disk; a piece of the desired type and shape is chipped to a rough, round blank, or the pieces may be heated to softness, rolled to a round shape, and pressed in a mold to the desired size and to approximately the desired curvature of the surfaces. The surfaces are then ground, or lapped, to the final form, using coarse emery, carborundum, or diamond as an abrasive. Lens surfaces are ground on an iron tool, either flat or suitably curved, using progressively finer grades of one of the abrasives mentioned above. In the grinding process, a rotating cup-shaped tool is mounted so that its axis of rotation intersects the axis of the lens at the center of curvature of the desired spherical surface. The obliquity of the tool axis must be adjusted so that the rim of the tool cuts across the center of the (concave) lens being generated. For convex lenses, the center of the rotating tool face cuts the rim of the lens blank. As both tool and lens rotate about their respective axes, a spherical surface of the desired radius of curvature is generated on the lens.
Process protection of Optical Lense
Precise equipment: Use high-precision processing equipment and instruments to ensure the optical performance and size of the lens are accurate.
Operation specifications: Operators must undergo professional training and follow strict operating procedures.
Material protection:
Anti-scratch protection: Apply an anti-scratch coating on the surface of the lens to reduce possible scratches during use.
Safe packaging: Use cushioning materials and protective packaging during transportation and storage to prevent physical damage.
Regular maintenance:
Equipment maintenance: Regularly maintain and calibrate production equipment to ensure its long-term stable operation.
Cleaning and maintenance: Regularly clean and inspect the production environment and equipment to keep them in good working condition.