Single Vision Lenses manufacturer
- Our single vision lenses are not only lightweight and durable, but also available in a variety of styles.
- Each lens is equipped with advanced protective coatings to guard against scratches, glare, and UV rays, ensuring optimal performance and durability tailored to individual needs.
- Refractive Index: 1.499~1.74
- Material: CR-39, Polycarbonate, Trivex
- Functionality: Aspheric, Photochromic, Blue Cut
- Application: Distance, Intermediate, Near
- Precision Lens Manufacturing Process
By Refractive Index
1.499
- These lenses are ideal for low to medium prescriptions and are the most cost-effective choice for eyeglasses.
- We offer UC (Uncoated), HC (Hard Coated), and HMC (Hard Multi-Coated) lenses. UC lenses are basic; HC lenses enhance scratch resistance; HMC lenses add anti-reflective properties to improve scratch resistance and reduce glare for better visual comfort.
1.56
- Thinner than 1.499 index lenses, making them suitable for moderate prescriptions without bulkiness.
- Often comes with built-in UV protection and can include aspheric designs to reduce distortions and flatten the lens profile.
1.61/1.67/1.74
- Belonging to the high refractive index lens category, these lenses are very lightweight, enhancing comfort and making them ideal for all-day wear.
- They come standard with superior UV400 protection and are slightly more expensive due to their advanced features.
By Material
Plastic CR-39
- Our CR-39 Single Vision Lenses provide superior optical clarity with low dispersion and a high Abbe value, minimizing chromatic aberration.
- Though they are less impact-resistant than polycarbonate and Trivex, making them less suitable for safety or sports eyewear, their affordability makes them a popular choice for regular eyewear.
Polycarbonate
- Polycarbonate lenses, with slightly lower optical clarity than CR-39, offer very high impact resistance, making them suitable for children's eyewear, safety glasses, and sports eyewear.
- These lenses are lighter than CR-39 but slightly heavier than Trivex, and are priced between CR-39 and Trivex, making them a moderately affordable option.
Trivex
- Trivex lenses, with clarity similar to CR-39 and better than polycarbonate, have a high Abbe value and impact resistance suitable for safety and sports eyewear.
- Trivex is the lightest and most comfortable option for extended wear but is typically the most expensive due to its advanced properties.
By Function
Aspheric
- Aspheric lenses feature a slim, flat design that minimizes the bulging appearance typical of traditional lenses, enhancing both the field of clear vision and aesthetic appeal, especially for stronger prescriptions.
Photochromic
- Photochromic lenses transition from clear to dark in sunlight, offering UV protection and eliminating the need for separate sunglasses, ideal for outdoor convenience and varying light conditions.
Blue Cut
- Blue-cut lenses reduce harmful blue light and glare from digital screens, enhancing comfort and reducing eye strain. They offer UV410 or 420 protection and come in refractive indexes from 1.56 to 1.74, varying in thickness and clarity.
Application
Distance Lenses
- Distance single-vision lenses are designed to provide clear vision at long distances, ideal for activities like driving and watching movies. They are particularly suitable for individuals with myopia (nearsightedness) who require correction for distant vision.
Intermediate Lenses
- These lenses are optimized for vision at arm's length, about 18 to 24 inches away. They are particularly useful for viewing computer screens, hence often referred to as "computer glasses." helping to reduce eye strain and providing clearer vision at intermediate distances.
Near Lenses
- Near single vision lenses (reading lenses) are tailored for close-up tasks like reading and sewing, providing optimal vision up to 18 inches away. They are especially beneficial for those with presbyopia or hyperopia (farsightedness) who need clear near vision.
Manufacturing Process
The manufacturing of single vision lenses blends advanced technology, precision engineering, and skilled craftsmanship. From prescription analysis and material selection to surfacing, coating, and inspection, each step is vital for clear, comfortable vision.
Injection
The lens material is injected into molds to form the initial lens shape.
Cleaning Preparation
The lenses undergo a thorough cleaning to remove any impurities or residues.
Cleaning & Hard Coating
Lenses are cleaned again and then coated with a hard layer to enhance durability and scratch resistance.
Multi Coating
Multiple coatings, such as anti-reflective and UV protection, are applied to improve lens performance and protect the eyes.
QC Inspection
Quality control inspections are conducted to check for defects and ensure lenses meet the required standards.
Packing
The finished lenses are carefully packaged to prevent damage during transit.
Warehouse
Packaged lenses are stored in the warehouse until they are ready for distribution.
POPULAR QUESTIONS
Single vision uncoated plastic lenses are lenses designed to correct a single vision issue, such as nearsightedness, farsightedness, or astigmatism. Made from plastic materials like CR-39 or polycarbonate, these lenses do not have any additional coatings, such as anti-reflective, scratch-resistant, or UV protection coatings.
Yes, besides being thinner and lighter, high index lenses can provide better visual aesthetics by reducing lens distortion commonly seen in thicker lenses. They may also reduce eye magnification, making the wearer’s eyes appear more natural.
Yes, progressive lenses are often thicker than single vision lenses. This is due to the additional material required to create the gradient of focusing power, which generally increases the lens thickness, particularly on the edge of the lens.
Single vision prescription lenses have one consistent prescription throughout the entire lens, correcting vision at a single distance.In contrast, bifocal lenses feature two separate zones for near and distance vision, divided by a visible line, whereas progressive lenses provide a seamless transition between prescriptions for near, intermediate, and distance vision without any visible lines.
These lenses are beneficial for anyone who spends considerable time in front of digital screens, including computer users, gamers, and frequent smartphone and tablet users. They are especially useful for individuals experiencing symptoms of digital eye strain or those concerned about the potential effects of blue light on eye health.
Single vision lenses for astigmatism correct the uneven curvature of the cornea or lens by compensating for the distorted shape. This allows light to focus properly on the retina, providing clear and sharp vision at a single distance (either near or far).
