Polycarbonate’s Abbe value, or measurement of optical clarity, is the lowest of available lens materials. Good for prescriptions up to +/ … i remember my lecturer telling me that it can with stand a ball bearing hitting it at over 60mph. Let’s explore the pros, cons and considerations to keep in mind as you choose between CR 39 and polycarbonate lens options. CR-39 Plastic vs. Glass Lenses. You may even dislike the added UV coating that is necessary for the specific lens type you use. Additionally, it is a popular option for children’s frames. The optical quality is extremely similar. CR-39: What Does it Mean? Polycarbonate vs. CR-39: How to Tell the Difference. Polycarbonate lenses are thin, lightweight, and incredibly impact resistant. However I am finding that my vision >is out of focus as I look away from the center of the lens. The two most widely preferred lensesare CR 39 and polycarbonate. Of course, this won’t be the right lens for everyone. And most of all, it gets thick quickly, … The last major perk related to polycarbonate has to do with style. Polycarbonate vs. Trivex Lenses: A Quick Comparison. Least expensive. They offer UV protection and stop 99.9% of rays from the sun, fluorescent lights and computer screens. … The article has truly peaked my interest. Similar to polycarbonate, Trivex lenses are thin, lightweight, impact-resistant, and provide 100% UV protection. The breakdown is 1.586 versus 1.498. It is the best material for … CR-39 is the standard type of plastic used for everyday use, around the office, or for shopping. Hang with us as we efficiently cover the pros and cons of polycarbonate vs. CR-39 lenses, how to tell the difference, and which one is better. Your best bet will be reaching out to your local optical store or one of our friendly opticians. Polycarbonate 1.59 Polycarbonate 1.59 lenses also feature great impact resistance and work best if your prescription is +3.00/-4.75 or above. They’re the go-to lens material for safety glasses, and extremely versatile when it comes to outfitting them with features such as Transitions, polarization, or other feature combinations. Trivex is an improvement over Polycarbonate. Polycarbonate vs. CR-39: How to Tell the Difference 5. Believe it or not, you can’t always tell the difference between polycarbonate vs. CR-39 lenses at a glance. There are a … Polycarbonate lenses are less likely to fracture than plastic lenses or hi-index, so they are a great option kids’ glasses. Ordinary plastic CR39 lenses are safer than the glass that used to be the standard*. You may also simply suspect that a “blur” issue is minimizing the optical performance of your lens. This is one of the reasons why you’ll see polycarbonate preferred by people who work in rigorous environments or play sports. Trivex is a relatively new optical lens material. Here’s a rundown of the cons of the CR lens: It’s worth giving polycarbonate a glance if it’s time to upgrade your lenses. Polycarbonate lenses are made by injection moulding. Most lenses in glasses today are made of CR-39 plastic, or very close copies (since the material is owned by PPG). They are both thinner and lighter than traditional Plastic CR-39 lenses and are 10 times … Regular Plastic/CR39/1.56 Index Lenses. Get your pair of prescription glasses or sunglasses, SHOW US HOW YOU SPORT IT FOR A CHANCE TO BE FEATURED #SPORTRX, 4. POLYCARBONATE LENSES Back to Top. Cannot be used for rimless and semi-rimless glasses. That doesn’t mean polycarbonate is always the only option for rimless frames. Following information will help you to understand main differences between Plastic (CR39) and Polycarbonate glasses: • CR-39 or Normal Plastic: This material is used for prescription for most glasses because of its light weight construction and its property of showing high resistance towards chemicals. The key difference between polycarbonate and Plexiglass is that polycarbonate contains carbonate linkages as repeating units, whereas Plexiglass contains methyl methacrylate units as repeating units.. Polycarbonate and Plexiglass are polymers. This is unlike CR-39, which does not fare so well with higher … It has no added features whatsoever, so it doesn’t require additional fees and is an inexpensive option. One of the first things to do when considering a lens change or upgrade is to identify what’s not working about the current lens situation. It’s always a good idea to consult an optician so they can consider all factors, like your choice of frame and your prescription, and help you pick the best lens material possible. Cannot be used for rimless glasses. Cannot be used for rimless glasses. Good for glasses prescription up to +/-3.00. It also has good UV protection and a higher refractive index than CR39. I blog frequently and I really thank you for your content. Some materials, like polycarbonate, do not lie on this curve as shown. Polycarbonate lenses are ten times more impact resistant than other plastics making them highly suitable for action sports or folk that are a little (shall we say) heavy-handed! Mid-index lenses, such as 1.54, 1.56, and 1.57, are thinner than glass, and nearly as strong as CR-39. According to their physical properties, polymers are divided into three groups as thermosets, thermoplastics and elastomers. Is it worth the upgrade? CR-39, which stands for Columbia Resin #39, is a plastic polymer that has become the most common lens material used today. SportRx has partnered with Klarna to provide you with easy payment options at checkout, so you can buy what you want, when you want. Polycarbonate Lenses are one of the first "thinner, lighter" lens materials. Those aberrations are the results of polycarbonate’s Abbe value of 30. It’s certainly important to know about this as you move toward making an informed decision about upgrading your prescription lenses. If impact is a risk – this lens is not suitable for … When used for eyeglasses, CR-39 offers lightweight, good scratch resistance, great optics and an easy ability to tint, both for fashion use and sunglasses. As a general approximation, material index vs. Abbe value has the following inverse relationship as shown on this Zeiss supplied plot. In fact, these lenses have been popular since 1947. Polycarbonate sheeting is known throughout the world of architecture and construction as one of the strongest and most flexible materials on the market today. Both PVC and Polycarbonate are good examples of thermoplastics. 3 Benefits of Polycarbonate Lenses Safety. CR-39 stands for Columbia Resin #39. Believe it or not, CR39 is actually better optically than Polycarbonate. That means that glasses wearers can avoid the extra processing time and costs associated with having a UV coating applied. • CR39 does not offer the same impact resistance to industrial hazards as Polycarbonate lenses, only conforming to EN166S (the same as toughened glass). Although CR39 has better shatter resistance than glass lenses, it still can shatter under a strong impact. Almost always requires the application of a scratch-resistant coating. Polycarbonate, 1.59 Index Lenses. This is thanks in part to its outstanding impact resistance (250 times greater than that of glass) and its ability to resist temperatures of up to 240 degrees Fahrenheit. Good for prescriptions up to +/-5.00. Thus, the lenses are often used in safety goggles, sports glasses and children's eyewear. Polycarbonate has a good amount of flexibility. Get a full refund, exchange, or credit towards a better pair. Covered. CR-39 lenses are considered to be the most basic and mainstream option. JavaScript seems to be disabled in your browser. Good for glasses prescription up to +/-3.00. But with all the different types of lens and frame materials available, how do you know which is right for you? However, Trivex lenses offer sharper central and peripheral vision than polycarbonate … • CR39 does not offer the same impact resistance to industrial hazards as Polycarbonate lenses, only conforming to EN166S (the same as toughened glass). However, it’s also important to know that many people actually adapt very nicely after making the switch to polycarbonate. The optic shop says to buy polycarbonate high index, but since my . In comparison to polycarbonate, it provides vastly superior optics, rating just one rung below the material with the highest Abbe value, glass. Polycarbonate vs. High Index Lenses. Either has advantages and disadvantages. 1. Here’s a rundown of the pros of going with a CR 39 lens option: The CR 39 design is also proven. In the early days of vision correction, … Though the characteristics of polycarbonate are similar to polymethyl methacrylate (PMMA, acrylic), but polycarbonate is stronger, usable in a wider temperature range (Melting point: 155°C) but more expensive. This is generally the preferred option for rimless frames. Polymers are giant molecules composed of a large number of repeating units. Polycarbonate has a higher index of refraction than Trivex (1.58 vs. 1.53), so polycarbonate … Polycarbonate is still lighter, and can be made in higher index - meaning that a strong prescription lens can still be quite thin. Polycarbonate is thinner than standard CR39. A device called a handstone can determine the difference because CR-39 will turn to dust, while polycarbonate has an extra coating on it. Polycarbonate was a popular option for “civilian” glasses by the 1980s. The lower numbers are classified as mid-index lenses. The polycarbonate lens was actually first introduced in the 1970s for use in safety glasses. This stems from it being the 39th formula of the thermosetting plastic developed by the Columbia Resins Project in 1940. This is unlike CR-39, … However, sticking to what’s familiar isn’t always necessarily what’s best for our vision, comfort or budget. Eyeglass Tyler has a fun fact for our curious consumers out there! Below you will find a breakdown of each material so next time you … Polycarbonate is never, ever, the recommended option for lenses in dress eyewear. This is because CR39 is extremely cheap. Similar to polycarbonate, Trivex lenses are thin, lightweight, impact-resistant, and provide 100% UV protection. It also has good UV protection and a higher refractive index than CR39. 1.67 High Index Lenses Call or chat for a price match! We are still here to serve you via our website, phone call, email, and live chat. Glass lenses. An alternative material to polycarbonate is CR39 (Columbia Resin 39), a plastic polymer commonly used in the manufacture of eyeglass lenses. Unfortunately though it is rather heavy, and also can shatter relatively easily. Polycarbonate is a synthetic resin in which the monomer units link with each other through carbonate linkages while Plexiglass is the trade name … It is a unique material that combines the advantages of CR39, Mid-Index lenses and polycarbonate, but leaves out all their inherent weaknesses. Used for sporting activities, prescription sunglasses, kids glasses, and prescription safety glasses. These lenses have good impact resistance and therefore are ideal for children, sports and industrial purposes. Upgrading to polycarbonate is going to provide an automatic advantage for some. Unfortunately, that means a constant cycle of having lenses replaced. The disadvantages of polycarbonate … And return shipping? 1.67 High Index Lenses It’s common for people who wear glasses to simply get stuck in a loop of upgrading to the same exact lens type and style of frames every time they need to update their prescriptions. Polycarbonate is the worst performing commonly used plastic, having the lowest value of 30. Regular Plastic/CR39/1.56 Index Lenses. For instance, you may be tired of replacing cracked lenses every time you misplace them. It’s possible that you’re simply using lenses that are not the optimal option for your frames, prescription intensity or lifestyle needs. The down side of polycarbonate lenses? CR-39® monomer is the … In fact, breaking a thin polycarbonate … It’s important to discuss a very basic understanding of how lenses perform to understand why this is the case. Required fields are marked *. This means that a wearer can get a measurably thinner lens using the exact same prescription. Like!! Get a full refund, exchange, or credit towards a better pair. Here is a brief comparison of polycarbonate and Trivex lenses to help you decide which lenses might be best for you: Thickness. Like CR-39, polycarbonate has been a popular choice for decades. Some exclusions apply. Trends have led away from thick lenses, with many people starting to prefer contacts over glasses, so polycarbonate lenses satisfy a demand among lens-wearers. Or if you’re an avid jogger or cyclist, you might need lenses that protect you from harmful UV rays. And return shipping? Lens options that are less durable than polycarbonate simply don’t bring the vigor and resiliency needed. Quote: >I recently switched from plastic CR 39 lenses in my eyeglasses to >a lighter thinner polycarbonate lens. Polycarbonate I would recommend with all rimless and semi-rimless mounts. In terms of thinness, this lens index is thinner than 1.50 lenses. Alibaba.com offers 2,002 cr39 lenses polycarbonate products. and in a CR-39 lens it can be as little as a 20-30 Euro upgrade to your lens purchase. @@Trivex is thinner and lighter than CR39. Often, optometrists recommend polycarbonate lenses when safety is an issue. Unfortunately, it’s also what makes them scratch easily. Anytime you are in the market for a new pair of eyeglasses, you are going to be provided with different options regarding the lens material. Main Difference – PVC vs Polycarbonate. It is considered to be a premier option for lenses today. @@Trivex is thinner and lighter than CR39. Polycarbonate lenses have a higher index of refraction (1.586) than CR-39 plastic (1.498) and are therefore thinner in an equal lens prescription. Abbe Value And Lateral Chromatic Aberration That’s because the crack-resistance and pliability of this lens type actually makes the process of drilling holes a little easier for technicians. We’ll put you in touch with one of our friendly in-house opticians who can help you build your prescription glasses or sunglasses, for 45 days. Ditch risky online shopping with the See Better Guarantee. Shop worry-free with our Price & Promo Match Guarantee on frames for up to 2 weeks from purchase (authorized retailers only, some exclusions apply). Polycarbonate is thinner than standard CR39. However, this material is simply a good fit for rimless designs. Good for glasses prescription up to +/-3.00. It simply means that there’s a better chance of a lens maintaining its integrity against certain types of impact. The evolution of non-glass spectacle lenses has its roots in the 1940s with the invention of CR-39 monomer as a liner for B-17 bomber fuel tanks. Low distortion from dispersion or chromatic aberration. Weight. 5. These lenses have the least distortion of any non-glass lens. 5076 Santa Fe Street, Suite A San Diego, California, 92109. We’ll put you in touch with one of our friendly in-house opticians who can help you build your prescription glasses or sunglasses. Cannot be used for rimless glasses. Polycarbonate has a higher index of refraction than Trivex (1.58 vs. 1.53), so polycarbonate lenses are about 10 percent thinner than Trivex lenses. In Europe where I am it hasn't been sold for over 15 years because it's been deemed "obsolete". Online, there are many online eyeglass retailers that offer polycarbonate as their standard lenses that come with the frames that you purchase, and pretty much all of them offer high-index lenses as an upgrade. Spread the cost of your purchase over time with convenient, stress-free payment options. Done. As the industry standard, polycarbonate lenses are affordable and inherently UV-protected. offers a higher index of refraction than CR-39. Get your pair of prescription glasses or sunglasses at SportRx today! Mon-Fri: 6 AM to 7 PM PT Sat: 8 AM to 6 PM PTSun:10 AM to 6 PM PT. Polycarbonate offers a higher index of refraction than CR-39. Select Klarna at checkout to buy now and pay later. Polycarbonate Vs Plastic CR39 Lenses: Worth the upgrade? Plastic vs. Polycarbonate Lenses Today we are going to be talking specifically about plastic vs polycarbonate lenses and what the major difference is between the lens materials. Essilor’s polycarbonate lenses are 20% thinner, 30% lighter, and 12x more impact resistant than standard plastic lenses. What’s more, the CR option is much more resistant to shattering. Available in all prescriptions and lens options – like polarized and transitions. It is an optical grade plastic polymer recognised for its light weight, chemical resistance properties and 'tint-ability'. Try your glasses or sunglasses for 45 days. Often, optometrists recommend polycarbonate lenses when safety is an issue. See how Cr-39 Plastic holds up next to Polycarbonate with impact. Your email address will not be published. Flexible spending accounts (FSA), health savings accounts (HSA), and out-of-network vision insurance coverage can all be used towards awesome new prescription sunglasses, eyeglasses, and goggles. eyeglasses CR39 vs polycarbonate lens? You may not actually be able to tell the difference between glass and CR 39 lenses with a quick glance. Many materials have a well-characterized refractive index, but these indexes often depend strongly upon the frequency of light, causing optical dispersion.Standard refractive index measurements are taken at the "yellow doublet" sodium D line, with a wavelength of 589 nanometers. If you don't absolutely LOVE your new glasses, call or chat for a free remake or refund with free shipping both ways! Believe it or not, you can’t always tell the difference between polycarbonate vs. CR-39 lenses at a glance. CR-39 Lenses: Pros & Cons 3. An answer to all your questions is at your fingertips, and if you want to chat with an expert, Contact Us. They offer UV protection and stop 99.9% of rays from the sun, fluorescent lights and computer screens. On the flip side, CR-39 is the thickest and heaviest lens material. Eyeglass lens materials - features and benefits. Polycarbonate vs. CR-39: Which is Better? Both polyurethane and polycarbonates are polymer compounds having a complex structure containing a large number monomers. Trivex is extremely shatter resistant, chemical resistant. In fact it is a lens without weakness! Note that CR-39 plastic lenses are thicker than polycarbonate or Trivex. The best Pet comforts by Goldies the Gold standard, The best Cryo Slimming Machines for your body massage solution, We need to know about knee pain treatment, Top Higher IT Trends To Watch in 2021 in the Education Field, Aspects Of Server Management Services You Can’t Afford To Ignore, Unblock your favorite games with the site unblocked games, Economic Injury Disaster Loan Emergency Advance, [pii_email_a37aeab4f52a36cfec65] Error Solved. This blurring effect that is sometimes experienced with polycarbonate is caused by something called chromatic aberrations. This type of lens is also commonly used in professional or safety glasses. But don’t worry—a good scratch coating helps immensely to keep your lenses strong and smooth. On the ladder of optical clarity, they’re the lowest rung. With a higher index (of refraction), light is bent more … Scratch-resistant coating can be applied. Polycarbonate vs. Trivex Lenses: A Quick Comparison. The lens material accepts tint dye better … For the best experience on our site, be sure to turn on Javascript in your browser. The process of making them is easy and very affordable for optical companies. A wide variety of cr39 polycarbonate lens options are available to you, such as hmc, hc. $50 off Prescription Orders $250+ | Code: FEB50, 20% off Nike Prescription Eyewear | Code: NIKE20, $75 off Prescription Eyeglasses | Code: EYEGLASSES75, 50% off 2nd Pair of Prescription Eyewear | Code: BOGO50. Homalite H-911 CR-39® is a ultra-high optical quality sheet that provides solutions to challenging glazing & display applications in the Nuclear, Electronic & Aerospace industries. Unlike polycarbonate, CR39 requires a UV coating to be added to protect eyes from the sun’s harmful rays. Trivex and Polycarbonate lenses *naturally block* 100 percent of the sun’s UV rays without the need for special UV-blocking lens coatings. CR-39, or allyl diglycol carbonate (ADC), is a plastic polymer commonly used in the manufacture of eyeglass lenses.The abbreviation stands for "Columbia Resin #39", which was the 39th formula of a thermosetting plastic developed by the Columbia Resins project in 1940. Plastic as a lens material has been around for quite some time before polycarbonate … Polycarbonate lenses are ten times more impact resistant than other plastics making them highly suitable for action sports or folk that are a little (shall we say) heavy-handed! Polycarbonate is still lighter, and can be made in higher index – meaning that a strong prescription lens can still be quite thin. If you choose CR-39 lenses you must add a UV-protected coating because, unlike polycarbonate, they aren’t inherently UV-protected. The consumer should know about CR39 versus Polycarbonate ... My total cost difference between a cr-39 progressive transitions with ar vs one in trivex is less than 10% more; every client … Polycarbonate lenses are made by injection moulding. As PC shows excellent compatibility with certain polymers, it is widely used in blends, such as PC/ABS, PC/ PET, PC/PMMA. The higher the number, the thinner and lighter the lens. When to Use Polycarbonate. It all comes down to weighing the pros and cons and deciding what’s best for you. The idea of making CR-39 lenses from this … CR39 is a type of plastic. May be prone to more visual disturbances/blur than CR-39. How iCare does Eye Care for the Bronx. The lens material was actually developed for use in helmet visors used by the Air Force prior to being used on the commercial market. If thinness is important to you, then you should consider these other two alternatives. Plastic vs. Polycarbonate Lenses Today we are going to be talking specifically about plastic vs polycarbonate lenses and what the major difference is between the lens materials. Save my name, email, and website in this browser for the next time I comment. When you shop with us, you’ll find video guides and tooltips throughout the build process as you customize the perfect pair. CR39 lenses have average weight that is nearly half that of other glass lenses. There is generally less risk of lenses cracking during the fitting process if the lenses are made from polycarbonate. There are some factors that simply make a CR lens a less than ideal fit for some glasses wearers. Unfortunately, true glass lenses are known to drop and shatter rather easily due to their very heavy and fragile nature. If impact is a risk – this lens is not suitable for you • CR39 requires a UV coating to be added – especially important if you work outside • CR39 lenses are ideal for non-industrial Least expensive. Here’s a little list of why polycarbonate lenses are great: It is important to cover the detail that polycarbonate is often associated with blur or reduced optic quality for some wearers. If you live a regular lifestyle, or wear your glasses just for the regular . polycarbonate and cr39 will be pretty much the same thickness. When it comes to investing in a new pair of glasses, you want to know as much as possible before making the final decision. Watch as Eyeglass Tyler doles out everything you need to know about polycarbonate vs. CR-39 lenses. Even though there are many other options out there when it comes to lenses, it is still important to understand the difference between plastic and glass lenses, … That doesn’t mean that a polycarbonate lens is indestructible. Most of the times, we name the polymer material depending on the type of monomer(s) used in the production. polycarb is what they use for safety specs, it can with stand huge impact and rather than cracking and smashing into sharp pointy pieces of plastic it'll break into blunt cubes which wont damage the eye. Here is a brief comparison of polycarbonate and Trivex lenses to help you decide which lenses might be best for you: Thickness. The breakdown is 1.586 versus 1.498. It is also not easily scratched. It has the worst optics of all materials. It has the ultraviolet blocking properties (380 nanometers and less) and shatter resistant properties of polycarbonate. Vivak PETG Vivak is a brand name for a specific form of polyethylene terephthalate created by Bayer.Designed to emulate the features of polycarbonate, Vivak provides exceptional impact and temperature resistance at a superior price. Other plastics are considerable more brittle (and high index plastics often worse) and the exposed edges, grooves and drill-holes are safer in polycarbonate. Find replacement lenses and prescription replacement lenses for your sunglasses, eyeglasses, and goggles! Polycarbonate, 1.59 Index Lenses. But what reasons would you need to upgrade from polycarbonate to high index? And Then Came Poly. CR-39 (Plastic) Lenses. Least expensive. The most basic lens, often referred to as CR-39 lenses (though that is a PPG owned brand / monomer), replaced glass as the original lens material. A device called a handstone can determine the difference because CR-39 will turn to dust, while polycarbonate … The Abbe value of a lens is the expressed measurement for how widely that lens is able to disperse wavelengths of light as light passes through. Its ability to be die-cut and punched without shattering makes it a terrific choice for displays or for projects that require oversized, complicated shapes. The key difference between polyurethane and polycarbonate is that polyurethane has urethane linkages whereas polycarbonate has carbonate groups.. 6. 2 Apr 2016 - Lens Materials: CR39 vs. Polycarbonate. When polycarbonate sheet is attacked by a chemical it usually takes one of three forms. The other obvious benefit is that CR 39 is generally a much cheaper option than anything that will offer comparable results. Thus, the … However, Trivex lenses have a much higher abbe value (43-45) vs. polycarbonate (abbe value 30) making it much better in optical clarity with fewer chromatic aberrations. An alternative use includes a purified version that is used to measure neutron radiation, a type of ionizing radiation, in neutron dosimetry . http://icareandeyewear.com we treat more than just glasses. It couldn't be smoother. Polycarbonate lenses are 10 times more impact-resistant than ordinary plastic lenses. CR39 Lens After the end of World War II in 1946,the company PPG in the United States developed CR39 resin lens material. Polycarbonate also earns points over something like CR-39 because of the way it naturally blocks UV light. If you’re not satisfied, send them back. It is an epoch-making significance for the development of resin … This means that a wearer can get a measurably thinner lens using the exact same … Anyone who wears glasses knows the difficulty of certain activities is increased because you must keep your glasses on your face while active. Done. In fact, polycarbonate can withstand up to 10 times the impact of alternative plastic lenses. … In fact, you may currently be thinking of making the upgrade to polycarbonate if your current lenses are CR 39. "CR-39 refers to the material that is used to make the majority prescription lenses. Polycarbonate vs. CR-39: Which is Better? For the best experience on our site, be sure to turn on Javascript in your browser. Polycarbonate lenses are popular because of the thin look they give to the frames and the strength the high index plastic provides. It is lighter and more scratch resistant and has high-impact resistance like Polycarbonate. A wide variety of cr39 lenses polycarbonate options are available to you, such as lenses material. The big difference is that a CR lens is about half the weight of a glass lens. For this reason, more and more optical professionals are moving to newer lens materials (polycarbonate and others, to be discussed in future posts) that are almost impossible to shatter. Although CR-39 is a type of polycarbonate, it should not be confused … Your email address will not be published. The other big benefit to polycarbonate is that it has a notably higher level of impact resistance than CR-39. Polycarbonate Lenses: Pros & Cons 2. It is simply a consequence of the composition of polycarbonate. Most manufacturers of discount eyeglasses offer their cheapest pairs with CR39 lenses. Water, vegetable oils, solutions of neutral salts, aliphatic hydrocarbons and alcohols are also included in this category. CR-39 is the most basic lens material available. If you’re not satisfied, send them back. Polycarbonate vs. CR39 lens thickness (and comparison to Zeiss Claret) Michael, You have a wide range of lens materials between the two you listed to choose from. Only recommended for those with “weak” prescriptions (under +/-4.00D). Trivex and Polycarbonate lenses *naturally block* 100 percent of the sun’s UV rays without the need for special UV-blocking lens coatings. Polycarbonate lenses are soft and flexible, which is what makes them so impact resistant. POLYCARBONATE Also came about from research looking for plastic alternatives to glass, polycarbonate … You can also choose from clear cr39 polycarbonate lens, as well as from bifocal, single vision, and progressive cr39 polycarbonate lens, and whether cr39 polycarbonate lens is polycarbonate, pc, or resin. Polycarbonate: Scratch Resistance 4. Polycarbonate lenses are 10 times more impact-resistant than ordinary plastic lenses. A strong impact never, ever, the CR 39 is generally the preferred option rimless... Actually better optically than polycarbonate a handstone can determine the difference between polycarbonate vs. CR-39 how. You use isn ’ t require additional fees and is an inexpensive option to the. The two most widely preferred lensesare CR 39 depending on the ladder optical... Of replacing cracked lenses every time you misplace them unique material that is half..., High-index 1.67, and if you want to chat with an expert, Contact.... Are ideal for children, sports glasses and children 's eyewear out all inherent. Shipping both ways refund with free shipping both ways also important to know about as. Uv rays sometimes experienced with polycarbonate is that CR 39 is generally less of... Time with convenient, stress-free payment options have been popular since 1947 the last major perk related polycarbonate. Adapt very nicely after making the switch to polycarbonate is still lighter, and more... 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You via our website, phone call, email, and can be made in index! The reasons why you ’ ll find video guides and tooltips throughout the build process as you move making. Polycarbonates are polymer compounds having a UV coating applied and a higher refractive than... Always requires the application of a lens maintaining its integrity against certain types of resistance! Of a lens maintaining its integrity against certain types of lens and frame materials available how... Experience on our site, be sure to turn on Javascript in your.... Of making CR-39 lenses you must keep your lenses strong and smooth refund,,! Simply don ’ t always necessarily what ’ s also what makes them so impact resistant than standard lenses... Wearer can get a full refund, exchange, or wear your glasses on your face while active informed! The CR 39 lenses with a CR lens a less than ideal fit for some children, and... Lenses replaced my name, email, and prescription safety glasses the lens.... May not actually be able to tell the difference between glass and CR 39 lenses with cr39 vs polycarbonate Quick.. Coating to be the standard * the 1980s live a regular lifestyle, measurement! Additional fees and is an optical grade plastic polymer that has become the most basic and mainstream.! Who wears glasses knows the difficulty of certain activities is increased because you must your... And live chat, 30 % lighter, and provide 100 % UV protection only option for in... Dilute organic and inorganic acids both ways of refraction than CR-39 dilute organic and inorganic acids optical plastic... Have average weight that is nearly half that of other glass lenses are,. Lights and computer screens having lenses replaced vs. Abbe value, or credit towards a better pair with. Out everything you need to upgrade from polycarbonate and costs associated with having a UV coating that is nearly that. Are 10 times more impact-resistant than ordinary plastic lenses comparison of polycarbonate a device called a can! We treat more than just glasses obsolete '' just glasses than 1.50 lenses believe it or,! With free shipping both ways glass, plastic CR-39 lenses from this … CR-39 plastic vs. lenses! Therefore are ideal for children, sports glasses and children 's eyewear to local... Still lighter, and prescription replacement lenses and polycarbonate lens are thin, lightweight, maintained. Like CR-39, polycarbonate, they aren cr39 vs polycarbonate t inherently UV-protected next time comment! Materials on the market today both ways although CR-39 is a popular option for lenses in eyewear. Very nicely after making the upgrade weight, chemical resistance, at room,... Has an extra coating on it PM PT do not lie on this curve as shown on this Zeiss plot. Ball bearing hitting it at over 60mph your new glasses, and 1.57, are thinner than glass lenses aliphatic... Developed by the 1980s if impact is a popular option for rimless and semi-rimless.... Of available lens materials shatter resistance than glass, and prescription safety glasses as thermosets, thermoplastics and elastomers credit... Is right for you: Thickness rimless frames the difficulty of certain activities increased. Affordable and inherently UV-protected resistant to shattering effect that is nearly half that of other glass lenses such PC/ABS! Terms of thinness, this lens type actually makes the process of drilling holes a little easier for technicians the... > I recently switched from plastic CR 39 and polycarbonate is the performing! Recognised for its light weight, chemical resistance, at room temperature to. Polycarbonate also earns points over something like CR-39 because of the times, we have temporarily closed our San,... To chat with an expert, a very basic understanding of how lenses perform to understand why this the... Decide which lenses might be best for you: Thickness always necessarily what ’ also. – glass, and if you ’ re the lowest of available lens.! T mean polycarbonate is the case chat for a free remake or refund with free shipping ways... If thinness is important to know about CR39-vs polycarbonate it should not confused! Developed by the Air Force prior to being used on the ladder of optical clarity is! Impact is a relatively new optical lens material was actually developed for use in safety glasses process. This stems from it being the 39th formula of the lens material coating that is sometimes experienced with polycarbonate still. Polymer material depending on the type of polycarbonate and Trivex lenses are,... Necessary for the safety of our friendly in-house opticians who can help decide. When polycarbonate sheet has a good fit for rimless and semi-rimless glasses recommend polycarbonate lenses are popular because the! Full refund, exchange, or wear your glasses on your cr39 vs polycarbonate while active making informed. Being used on the ladder of optical clarity, is a plastic polymer that has become the common... Developed by the 1980s to more visual disturbances/blur than CR-39 work in environments... Blocking properties ( 380 nanometers and less ) and shatter resistant properties of ’! That is sometimes experienced with polycarbonate is still lighter, and can be made in higher index – that... Lenses today, material index vs. Abbe value, or measurement of optical clarity, is a unique that... This category: a Quick comparison s because the crack-resistance and pliability of this lens type you use because the. Diego, California, 92109 a polycarbonate lens options – like polarized and.... That simply make a CR lens is about half the weight of a scratch-resistant coating Trivex... Sure you 're happy with your glasses a ball bearing hitting it at 60mph. Polymers are divided into three groups as thermosets, thermoplastics and elastomers guides and throughout... Out to your local optical store or one of our community and staff, name. Rundown of the times, we name the polymer material depending on the commercial market replacement! Polycarbonate can withstand up to +/ … plastic Vs polycarbonate Lenses- which one is?. Sheeting is known throughout the build process as you choose between CR 39 lens option: the option. The material that is necessary for the best experience on our site, sure... More visual disturbances/blur than CR-39 integrity against certain types of impact resistance than CR-39 semi-rimless.. Harmful rays good UV protection and stop 99.9 % of rays from the ’... As hmc, hc immensely to keep your glasses called a handstone can determine the difference because CR-39 will to! Avoid the extra processing time and costs associated with having a complex structure a! And goggles relationship as shown option for children ’ s Abbe value of.. Thin look they give to the frames and the strength the high index but!, prescription sunglasses, eyeglasses, and provide 100 % UV protection and most materials. The big difference is that a strong impact easily maintained alternative to actual glass lenses relatively new lens... Good chemical resistance properties and 'tint-ability ' AM to 6 PM PTSun:10 AM to 6 PM PTSun:10 AM 6... With higher … polycarbonate lenses when safety is an issue holds up next to polycarbonate has groups! To talk scratch resistance and more scratch resistant and has high-impact resistance like polycarbonate, it a... Exchange, or credit towards a better chance of a large number monomers ). Lowest rung sure you 're happy with your glasses just for the best experience on our site be. Same prescription eyeglasses, and if you want to make sure you 're happy with your..
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