The birth of progressive lenses
In 1907, British optometrist Owen Aves first proposed the concept of progressive lenses and got the first patent of progressive lenses. In 1910, Henry Orford Gowlland designed and made a similar lens in Canada, but technical limitations prevented it from succeeding. In 1959, Bernard Maitenaz, a French optical and mechanical engineer, developed the first progressive lens, which was successfully put into the commercial market for the first time and became a milestone in the history of world optometry. With the development of science and technology, the design of progressive lenses has been greatly developed.
Plano Lenses vs Demo Lenses
When talking about the plano lenses, demo lenses will be talked about, too. Plano lenses are different from demo lenses. Demo lenses are nothing but lenses that are fitted into the demo frames at the optical showroom and workshops. The only purpose of demo lenses is to give a realistic aesthetic of the frame to the users so that they can get an idea of how it would look with corrective lenses. However, there is also no corrective power on demo lenses.
Compared with demo lenses, plano lenses provide good quality lenses that give your protection against harmful UV rays and blue light emitted from digital screens like laptops and desktops. In addition, you can also add an anti-glare coating to the plano glasses.
Does it take time to adjust to progressive lenses?
How long should it take to get used to progressive lenses? I have never worn glasses before.Progressive lenses were developed to allow easy switching between near and far views. Progressive glasses are divided into four parts. The upper part is the far-light region. The lower part is the near-light region, and the middle part is a variable light region. From top to bottom, if the hyperopia film is gradually increased and the myopia film is gradually decreased. The middle variable area is on both sides of the astigmatism area. Because of the prism effect, when you see things, through this area, the object will be blurred, and the eyes will feel uncomfortable. If the height of the frame itself is very small, the transition zone of progressive multi-focus is very narrow, and the eyes may not adapt to the sunglasses. The current design of progressive lenses is still not mature. Imported brands are relatively stable but expensive, and domestic brands are not mature in design. For various reasons, progressive glasses may be difficult to adapt to wearing.
What special offers do the glasses shops have?
The glasses shops discount activity is very necessary and effective, so common discount, full reduction, group purchase, package are the form of price reduction. Appropriate price reduction, discounts are beneficial, which can improve the customer flow and turnover of optical stores and can clear the inventory and drive the sales of other products.
Full discount. For example, full 500 yuan minus 50 yuan, direct cashback.
Group purchase discounts. For example, students can do myopia glasses group purchases. For the family, can do package, myopia, presbyopia, sunglasses group purchase discount promotion.
Gifts, services will not harm the brand image, on the contrary, they may promote some products. If customers enter the optical store, there are gifts. The gift types can be small goods, coupons, etc., for the optical store, which can bring more traffic.
Draw. They make a turntable. If you buy glasses, you can participate in a raffle to attract customers.
What Is Anti Reflective Coating?
Anti reflective coating, also known as AR, anti-glare, no-glare, or glare-free coating, can provide benefits to your vision. Anti reflective coating is added to lenses to reduce glare caused by light hitting the back of the lenses to improve your vision and make your eyeglasses more visually attractive.
Anti reflective coating will eliminate all reflections from the front and back surfaces of your lenses. Hence, more light is able to pass through your lenses which improves your vision. At the same time, fewer distractions are visible and the lenses are hardly noticeable, especially in the dark. So, is anti glare worth it? Most people agree that.
Can titanium temples be bended?
Using titanium alloy as the main material, the strength of the spectacle frame becomes larger and the density is smaller. Strong for the frame can be a good guarantee of the structure of the frame, and small density can effectively reduce the weight of the frame, so as to reduce the pressure on the ears and nose of the frame. The toughness of titanium alloy is very good, which can effectively avoid the breaking, bending deformation of the spectacle frame because of an accident.
It is recommended not to bend without authorization. There are many special tools for adjusting glasses. Bending by hand is easy to cause fracture because the force is concentrated at one point. You can take your glasses to a nearby optical shop and have them adjust them. Many big optical shops do this for free.
Anti-fouling Coating
The lens coated with anti-reflection film is pretty prone to stain, and the stain will affect the transmittance of the lens. Microscopically, the anti-reflection film shows a porous structure, therefore, the oil is very easy to soak in it. The solution is to coat a layer of anti-fouling film with anti-oil performance on anti-reflection film. The film is very thin and will not change the optical performance of the anti-fouling film. The material is mainly fluoride. There are two processes, one is the immersion method, one is the vacuum coating method (the most commonly used).
