quality Acetate Optical Frame & Optical Metal Frame factory

The earliest recorded comment on the use of lenses for optical purposes was made in 1268 by Roger Bacon. The first eyeglasses were estimated to have been made in Central Italy, most likely in Pisa, by about 1290: In a sermon delivered on 23 February 1306, the Dominican friar Giordano da Pisa (c. 1255–1311) wrote "It is not yet twenty years since there was found the art of making eyeglasses, which make for good vision ... And it is so short a time that this new art, never before extant, was discovered. ... I saw the one who first discovered and practiced it, and I talked to him." Giordano's colleague Friar Alessandro della Spina of Pisa (d. 1313) was soon making eyeglasses. The Ancient Chronicle of the Dominican Monastery of St. Catherine in Pisa records: "Eyeglasses, having first been made by someone else, who was unwilling to share them, he [Spina] made them and shared them with everyone with a cheerful and willing heart." Venice quickly became an important center of manufacture, especially due to using the high-quality glass made at Murano. By 1301, there were guild regulations in Venice governing the sale of eyeglasses and a separate guild of Venetian spectacle makers was formed in 1320. In the fourteenth century, they were very common objects: Francesco Petrarca says in one of his letters that, until he was 60, he did not need glasses, and Franco Sacchetti mentions them often in his Trecentonovelle. Seated apostle holding lenses in position for reading. Detail from Death of the Virgin, by the Master of Heiligenkreuz, c. 1400–1430 (Getty Center). French Empire gilt scissors glasses (with one lens missing), c. 1805 The earliest pictorial evidence for the use of eyeglasses is Tommaso da Modena's 1352 portrait of the cardinal Hugh de Provence reading in a scriptorium. Another early example would be a depiction of eyeglasses found north of the Alps in an altarpiece of the church of Bad Wildungen, Germany, in 1403. These early glasses had convex lenses that could correct both hyperopia (farsightedness), and the presbyopia that commonly develops as a symptom of aging. Although concave lenses for myopia (near-sightedness) had made their first appearance in the mid-15th century, it was not until 1604 that Johannes Kepler published the first correct explanation as to why convex and concave lenses could correct presbyopia and myopia. Early frames for glasses consisted of two magnifying glasses riveted together by the handles so that they could grip the nose. These are referred to as "rivet spectacles". The earliest surviving examples were found under the floorboards at Kloster Wienhausen, a convent near Celle in Germany; they have been dated to circa 1400. The world's first specialist shop for spectacles - what we might regard today as an optician - opened in Strasbourg (then Holy Roman Empire, now France) in 1466.

HOW TO CLEAN GLASSES WITH SPRAY AND A CLOTH   The quickest way to keep your lenses and frames clean is with a spray and a cloth. Not only is this incredibly straightforward, budget friendly and speedy, but it can be done anywhere. All the products needed can be easily popped in your bag, meaning you can easily refresh them on the go. Here’s a little more detail on the items you’ll need in your arsenal:   A microfibre or specialist lens cloth Glasses cleaning spray What’s important about these products is ensuring that they’re safe to use on your specs. For instance, eyeglasses cleaning spray has been specially formulated to be non-abrasive yet still get the job done. It’s important to opt for something designed to use on lenses, otherwise you might accidentally warp or damage them. And the same goes for the frames. Likewise, microfibre cloths are far more lens-friendly than anything more general (like a tea towel or tissues). Not only do these types of cloths dry things quickly and effectively, they are very gentle on your lenses. If you’re looking to upgrade your cleaning kit, check out our accessories for glasses-friendly products. Now you’ve got your two cleaning products ready to go, here’s how to clean your glasses with a spray and a cloth: First of all, blow on your lenses and frames. This will get rid of any dirt and dust. Next, apply a good deal of lens spray solution. There’s no risk of overdoing it here. And remember to spray on both sides for a thorough clean, as well as the frames. Gently rub all parts of your glasses with your microfibre cloth. Circular motions will help dry your specs quickly without leaving smudges and smears. You’re all done!   HOW TO CLEAN GLASSES THAT ARE CLOUDY Do you have cloudy, smeared lenses? This may be a build up of grime caused by grease and body oils. You can protect against this by holding your glasses by the arms (rather than the lenses), and clean them on a regular basis. Luckily, you can follow the same steps above to clean glasses that are cloudy. However, if after a thorough clean they’re still looking smudged, there might be a problem with your lenses. In this case, get in touch with your opticians to have them seen.   HOW TO LOOK AFTER YOUR GLASSES   Protection as prevention is the best way to keep your designer glasses safe from scratches, damage and dirt. Follow these easy tips to look after your glasses and prolong their life cycle.   Clean them on a regular basis with the steps covered above. Not only does this keep them in good condition and hygienic, it makes them far more pleasant to wear. Keep them safe in their box when you’re not wearing them. Avoid putting them on your head, or tucked into the top of your shirt.This can expose them to grime, pollution and rapid changes in environment. Avoid spraying chemicals around them, such as hairspray, dry shampoo, perfume etc. Your lenses and frames may not like them, and could end up damaged. Use glasses-friendly cloths to clean them, like microfibre. Avoid using the end of your shirt or tissues as this can cause scratches. Pick them up by their arms and temples, rather than the lenses. This will avoid accidental smudges from your fingers, as well as scratches.  

“Letters, however small and indistinct, are seen enlarged and more clearly through a globe or glass filled with water.” History Of Glasses This simple sentence, written by Seneca the Younger in the 1st century AD, is how eyeglasses first got their start. Though this was the first recorded acclamation of magnified sight, the thorough history of eyeglasses trails consistently through the ages. The first legitimate pair of eyeglasses is believed to have been created in Italy around 1286, though Marco Polo claimed to have seen many a pair in China in 1275. The invention, which many considered a form of art, made for good vision and quickly spread in popularity. Benjamin Franklin, an American scientist, is considered the inventor of bifocals. After suffering for years with myopia (nearsightedness) and presbyopia (inability to focus on close objects) Franklin constructed the two-lens-in-one concept that allowed for individuals to see both near and far with the same pair of spectacles. Perhaps one of the biggest evolutions in the history of eyeglasses is the frame and structure in which they are created. Early eyepieces were either hand-held or rested on the bridge of the nose (with hand support). It wasn’t until 1727 that the modern style of glasses was invented. However, the public didn’t immediately accept the design that passed over the temples and secured behind the ears and it wasn’t until the 19th century that the modern form of glasses became popular. What Are Eyeglasses Made Of? This may seem like a foolish question: glasses are made of glass, right? Not entirely. Most lenses on both eyeglasses and sunglasses are made from one of three materials. 1) CR-38: This is an incredibly durable plastic 2) Polycarbonate: Like the CR-38, this plastic is incredibly durable. It’s so durable, in fact, that it’s shatter-resistant. 3) Glass: Though not as popular as the previous two, glass is still used as a reliable material for glasses, especially if the eyesight is abnormally poor. The lens material is just one of many important aspects of glasses. When shopping for glasses, be sure to consider the following: Temple Material Also known as the “legs,” “stems” or “ear pieces” of the glasses, this is essential when keeping the glasses on your face. Below are four commonly used materials: 1) Zyl: A medium-grade plastic 2) Optyl: A high-grade plastic-nylon 3) Titanium: A strong, lightweight metal 4) Steel Alloy: A heavy metal combination Though the plastic temple materials are frequently used because of their sturdiness, a titanium design would be the best choice for lightweight, easily adjustable glasses. Hinge Materials Hinges are important in the design of glasses because they connect the temples or “legs” to the actual frame. They also help to make the glasses more compact when not in use. Despite which material is used in the construction of the temples and frames, hinges are comprised of two parts that are typically made from high-quality steel alloy. These two parts are connected by a common screw (also steel alloy) and help to open and close the temples. Frame Materials The frame, which is responsible for holding the lenses, can come in a variety of different materials. Affordable materials like plastic and steel alloy frames are reliable and frequently used, where as materials like gold, platinum, ivory and even wood are much more pricey and can be difficult to find. Frames with built-in nosepieces are typically made from the same material as the actual frame, and can be challenging to adjust and fix. Frames with adjoining nose pieces, on the other hand, are made from plastic and/or rubber and tend to be more “user friendly.”  Hengyang Optics knows the difference a pair of glasses can make. 

1940s The Optical Manufacturers Association (OMA), was formed to help to promote a business environment to stimulate growth and influence the eye care industry. Comprised of manufacturers of ophthalmic frames, lenses, cases and optical machinery, OMA sought to create opportunities to grow the industry and provided forums, technical standards, statistical information, advocacy services, education, communication products and management support services. OMA members benefited from many types of reports and statistical information.   1985 Members of the OMA set up the Vision Industry Council of America (VICA) to grow the ophthalmic market for the entire industry, including suppliers, manufacturers, practitioners and optical laboratories. The International Vision Expo shows were created as a centerpiece to showcase products and bring suppliers and their customers together.   In 1985, VICA took over the Better Vision Institute (BVI). The BVI was founded in 1929 and had a reputation as an advocate of vision care. The BVI brings together representatives from the fields of ophthalmology, opticianry and optometry and advised VICA in developing programs and materials, ensuring that the vision messages were accurate.   1999 The VICA and OMA Board of Directors determined that the best way for the supply side of the optical industry to meet the challenges of the 21st century was to join forces and combine resources. The vision of the new organization, the Vision Council of America, was to be the recognized leader in improving and expanding eye care and eyewear products and services in North America.   The first VCA Board of Directors was composed of members from the OMA and VICA boards at the time of the merger. This transition board operated in accordance with procedures set forth in the proposed VCA bylaws for a period of approximately one year. At the end of the transition period new directors were elected.   2004 The Low Vision Council voted in 2004 to join VCA. The Low Vision Division was added, expanding VCA’s umbrella to include this segment of the optical industry. In addition, Polycarbonate Lens Council also became a part of VCA in 2004.   2005 In 2005, the Anti-Reflective Council also elected to join VCA. A standing committee was developed to address the issues of the AR companies in the membership.   2008 Based on strategic direction set by the VCA board of directors and membership, the Vision Council of America launched its new brand – The Vision Council – to the vision industry. The new brand represents The Vision Council as the leading voice for enhancing life through better vision.   The re-branding process resulted in the development of a new core identity for The Vision Council, as well as new visual component of the brand. While the look of The Vision Council changed, the organization’s core services remain the same.   Additionally, the Sunglass Association of America voted to become a part of The Vision Council and the Sunglass and Reader Division of the organization was created.   2011 In 2011, the Optical Laboratories Association (OLA) and The Vision Council announced their joint affiliation, naming OLA the new Optical Lab Division of The Vision Council and combining the activities of both associations to benefit their respective members. The Optical Lab Division will represent one of six operating divisions within The Vision Council that provide guidance, education programs, marketing materials, research and advocacy outreach to address common interests among members.   2012 The European Sunglass Association (ESA) merged with The Vision Council in 2012, officially forming the European Sunglass Committee. This merger enabled The Vision Council to better address European issues and more effectively represent European-based member companies.   2013 The California Optical Laboratories Association (COLA) officially merged into The Vision Council's Optical Lab Division (formally the Optical Laboratories Association) in May 2013. Founded in 1957, the California Optical Laboratories Association represents full-service optical laboratories from California and other Western states.

From micrometer-scale mold carving to nanometer-level coating processes, each pair of glasses undergoes 36 precision淬炼 (refined) procedures: CNC numerical control grinding shapes the frame arc with a 0.1mm error tolerance, while optical coating machines apply 12 anti-blue light layers with nanometer precision. Every joint is measured by micrometers in full inspection, ensuring the bite error between lens and frame is

To enhance a glasses manufacturing factory's competitive edge, prioritizing automation upgrades and rigorous quality monitoring across all production stages is essential. Integrating advanced robotic systems for frame cutting, lens grinding, and assembly ensures precision and consistency, reducing manual errors and boosting output efficiency. Implementing real-time monitoring via IoT sensors and AI-driven vision systems allows instant detection of defects in materials or craftsmanship, enabling proactive adjustments to maintain high-quality standards. Simultaneously, establishing a customer-centric service framework is critical. This includes transparent communication channels to understand client needs, customized solutions for diverse orders, and efficient after-sales support to address feedback promptly. By digitizing production data and feedback loops, the factory can optimize workflows, refine product designs, and rapidly adapt to market trends. Ultimately, the synergy of automated excellence, end-to-end quality control, and responsive customer service not only elevates product reliability but also builds long-term trust, positioning the factory as a leader in the global eyewear industry.

2025 Sunglasses Trends: Smart, Sustainable, and Stylish As we step into 2025, sunglasses are no longer just a fashion accessory—they’re a fusion of cutting-edge technology and eco-conscious design. Leading brands like Oakley, Ray-Ban, and newer startups are rolling out AI-powered smart sunglasses with real-time health monitoring, augmented reality (AR) displays, and adaptive tinting that adjusts to sunlight intensity. Sustainability is also a key focus, with biodegradable frames and lenses made from recycled ocean plastics gaining popularity. Meanwhile, retro-inspired designs from the ‘90s and Y2K era are making a major comeback, with oversized frames and bold colors dominating street style. With solar activity peaking in 2025, UV-blocking lenses are a must, and brands are emphasizing enhanced protection without compromising on aesthetics. Whether for high-tech functionality or eco-friendly fashion, this year’s sunglasses are all about innovation with a purpose. —The Future of Eyewear, April 2025