Freeform Digital Progressive Lenses

The ultimate in personalized optics, providing wide fields of view and effortless focus transitions.

Product Introduction

Next-Generation Vision: Freeform Digital Surface Technology

Freeform Digital Progressive lenses represent the absolute zenith of modern ophthalmic science. Unlike traditional progressives which are cast from a fixed mold, our Freeform lenses are created using high-precision CNC diamond-point turning technology. This "Digital Surfacing" process allows the lens design to be calculated and carved point-by-point on the back surface of the lens with an accuracy of 0.01 diopters. This creates a vision experience that is uniquely tailored to the wearer's specific prescription and frame geometry. The primary advantage of Freeform technology is the dramatic reduction of peripheral distortion (astigmatism), which is a common complaint in conventional varifocals. By optimizing the corridors for distance, intermediate, and near vision, we provide a visual field that is up to 30% wider and significantly clearer. Whether you are driving, working on a computer, or reading a smartphone, the transition between focal points is smooth, natural, and requires minimal head movement. Our digital progressive designs also incorporate "In-set" optimization, which aligns the near-vision zone perfectly with the natural convergence of the eyes during reading. Combined with ultra-high index resins and advanced multi-coatings, Freeform lenses offer the most comfortable, high-definition, and easy-to-adapt visual experience available on the market today.

Specification

Surface Tech Back-Side Digital Freeform
Corridor Lengths 11mm, 13mm, 15mm, 17mm
Indices 1.56, 1.61, 1.67, 1.74

Technological Highlights: Premium Monomers and Coating Integrity

  • High-Purity Monomer Selection: We exclusively use high-performance monomers (e.g., MR-series) to achieve superior tensile strength and optical purity, resulting in excellent clarity and minimal risk of yellowing over time.
  • Precision Liquid Casting Process: The lenses are produced via a controlled liquid casting method that ensures uniform material density and refractive index consistency across the entire blank, which is critical for accurate therapeutic power zones.
  • Advanced Vacuum Multi-Coating (SHMC): Coatings are applied in a high-vacuum chamber, using multiple layers of metallic oxides to create a durable, anti-reflective stack. This process guarantees maximum light transmission and minimal glare.
  • Thermal Curing Optimization: A slow and precise thermal curing cycle is employed to maximize the material’s resistance to internal stress, ensuring the finished lens remains stable and optically perfect under varying temperature conditions.
  • Integrated Peripheral Defocus Geometry: The therapeutic design is engineered into the mold itself for cast lenses, or applied via digital surfacing for semi-finished blanks, guaranteeing the accuracy and consistency of the myopia control zone geometry.

Application

  • All-Day Presbyopia Correction
  • High-Resolution Digital Work
  • Active Lifestyles with Variable Focus

Advantage

  • Widest Possible Clear Vision Fields
  • Virtually No Peripheral "Swim" Effect
  • Precision Accuracy to 0.01 Diopters
  • 0+

    Years' Experience

  • 0

    Plant Area

  • 0+

    Exported to Countries

  • 0million lenses

    Annual Capacity

Customization

Customized For Your
Business

Read More
  • 01
    Complete Customization Capability
  • 02
    Professional Lens Architecture
  • 03
    Functional Coating Customization
  • 04
    Digital Rx Customization
  • 05
    Branding & Packaging
  • 06
    Delivery & Support
  • Complete Customization Capability

    We are well aware that the market demands faced by each customer are not the same. Therefore, Green Stone provides full process customization services covering lens design, function, materials, technology, and packaging, helping brand owners, lens centers, and optical retailers create exclusive product lines. Whether it's high-end progressive mirrors, functional polarizers, special filtering solutions, or personalized requirements for specific area standard certification, we can provide full support from formula design, optical simulation to mass production delivery.
    Read More
  • Professional Lens Architecture

    We are well aware that the market demands faced by each customer are not the same. Therefore, Green Stone provides full process customization services covering lens design, function, materials, technology, and packaging, helping brand owners, lens centers, and optical retailers create exclusive product lines. Whether it's high-end progressive mirrors, functional polarizers, special filtering solutions, or personalized requirements for specific area standard certification, we can provide full support from formula design, optical simulation to mass production delivery.
    Read More
  • Functional Coating Customization

    We are well aware that the market demands faced by each customer are not the same. Therefore, Green Stone provides full process customization services covering lens design, function, materials, technology, and packaging, helping brand owners, lens centers, and optical retailers create exclusive product lines. Whether it's high-end progressive mirrors, functional polarizers, special filtering solutions, or personalized requirements for specific area standard certification, we can provide full support from formula design, optical simulation to mass production delivery.
    Read More
  • Digital Rx Customization

    We are well aware that the market demands faced by each customer are not the same. Therefore, Green Stone provides full process customization services covering lens design, function, materials, technology, and packaging, helping brand owners, lens centers, and optical retailers create exclusive product lines. Whether it's high-end progressive mirrors, functional polarizers, special filtering solutions, or personalized requirements for specific area standard certification, we can provide full support from formula design, optical simulation to mass production delivery.
    Read More
  • Branding & Packaging

    We are well aware that the market demands faced by each customer are not the same. Therefore, Green Vision provides full process customization services covering lens design, function, materials, technology, and packaging, helping brand owners, lens centers, and optical retailers create exclusive product lines. Whether it's high-end progressive mirrors, functional polarizers, special filtering solutions, or personalized requirements for specific area standard certification, we can provide full support from formula design, optical simulation to mass production delivery.
    Read More
  • Delivery & Support

    We are well aware that the market demands faced by each customer are not the same. Therefore, Green Stone provides full process customization services covering lens design, function, materials, technology, and packaging, helping brand owners, lens centers, and optical retailers create exclusive product lines. Whether it's high-end progressive mirrors, functional polarizers, special filtering solutions, or personalized requirements for specific area standard certification, we can provide full support from formula design, optical simulation to mass production delivery.
    Read More

Frequently Asked Questions (FAQ)

  • Q: What makes Freeform "Digital"?
  • A: The prescription is carved by a computer-controlled diamond lathe for extreme precision.
  • Q: Are they easier to adapt to than old progressives?
  • A: Much easier; the distortion is significantly reduced, making them feel more natural.
  • Q: Can I use them for computer work?
  • A: Yes, the intermediate zone is much wider in Freeform designs.
  • Q: Can I put them in a small frame?
  • A: Yes, we offer "Short Corridor" designs specifically for small frames.
  • Q: Do they come in high index?
  • A: Yes, they are available in all indices up to 1.74.
  • Q: Is Blue-Cut coating available?
  • A: Yes, it is highly recommended for digital progressive users.
  • Q: Why is there a lead time?
  • A: Each lens is a bespoke digital creation requiring specialized lab processing.
  • Q: Do they help with night driving?
  • A: Yes, the digital accuracy reduces glare and improves contrast.
  • Q: What measurements are needed?
  • A: PD, segment height, and ideally frame wrap and tilt.
  • Q: Are they more expensive?
  • A: They are a premium product due to the advanced technology involved.

Payment and Shipping Policy

  • Payment: T/T (Telegraphic Transfer), L/C, or Credit Line for established distributors.
  • Shipping: Standard Air Express (UPS/DHL) for RX orders; Sea Freight for bulk 1.74 stock blanks.
  • Packaging: Premium vacuum-sealed individual envelopes to protect the photochromic layer.
  • Lead Time: 15-20 days due to the precision required for 1.74 casting and coating.

Comprehensive Business Information

MOQ 50 Pairs
Lead Time 15-20 Days
Packaging Reinforced moisture-proof export cartons.
Certifications FDA, CE, ISO9001.
Raw Materials Advanced 1.74 High-Refractive Monomer.
Customization Specific base curves and custom coating tints.
About
Jiangsu Green Stone Optical Co., Ltd.
Jiangsu Green Stone Optical Co., Ltd.
Jiangsu Green Stone Optical Co., Ltd. is professional China Freeform Digital Progressive Lenses Manufacturers and Custom Freeform Digital Progressive Lenses Factory. with strong combination of R&D, production and sales. We have production base of 65000 square meters and more than 350 employees. With introduction of complete sets of advanced equipment, new production technology and moulds, we sell our optical lenses not only in the domestic market, but also export to the world.
Our lens products involves almost all types of lenses. Product range covers 1.499, 1.56, 1.60, 1.67, 1.70 and 1.74 index, including single vision,bifocal, progressive, blue cut, Photochromic, blue cut photochromic, Infrared cut etc. with HC, HMC and SHMC treatment. Besides finished lens, We also manufactures semi-finished blanks. The products are registered with CE&FDA and our production certified by ISO9001& ISO14001 standards.
We positively introduce excellent management technology, comprehensively import Corporate Identity System and enhance the external image of company and brand.
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