Operation and Requirements of Drop Ball Test
The ball, which is 0.625 inches in diameter and weighs 0.56 ounces (16 grams), falls from 50 inches (127 centimeters) and hits the center of the lens. The geometrical center of the lens should be struck by the ball within a circle 5/8 inches in diameter. If the lens does not break, it is called a safety lens. There can't be anything that restricts the ball from falling. It cracks across the entire thickness, containing laminated layers (if any), and divides into two or more separate sections across the entire diameter.
The History of Clubmaster Glasses
Clubmaster glasses are a variation of the browline sunglasses made popular in the 1950s. The lenses of clubmaster glasses are typically held in place by a thin metal frame and are of a squared-off round shape.
Although many people believe that the Cubmaster glasses root back to the 1950s, the fact is that clubmaster glasses or clubmaster sunglasses as we know them didn’t come about until Bruce Willis wore a pair of Shuron Ronsirs browline glasses with tinted lenses on the TV series Moonlighting in the mid-1980s.
From that moment, browline glasses draw the public’s attention. By the 1960s, Ray-ban was a fairly large contender in the market and its owner Bausch & Lomb was one of the top manufacturers of browline-style eyeglasses. And then the Ray-ban launched the first browline sunglasses, called it clubmaster. Sales were enormous almost immediately and despite only coming out mid-80s, they still ranked as the third most popular style of sunglasses sold in the decade, next to Ray-ban’s Wayfarers and Aviators.
Then Ray-ban took every revision of the original 1947 Browline and began offering it as part of the clubmaster series. From bold brows to lightweight metal caps first introduced in the 1950s, the clubmaster offered a style that could fit elegantly on just about any face shape. After that, the clubmaster glasses have been popular for a long time.
Competition in visual marketing
The offline experience of consumers is pretty important. Store space design, planning and layout, and commodity display form are important parts of visual marketing. If all three can be balanced and matched, it will drive sales growth.
Full-Rim Frame Glasses
This kind of spectacle frame is relatively common. This kind of spectacle frame is relatively strong, not easy to deform, and can bear a considerable part of the thickness of the lens. Choose a pair of full-frame glasses according to your face shape. Wearing it is a fashionable choice. Women can choose thin-edged metal frames, while men choose sheet metal frames to look younger and more fashionable.
When do you need blue-light-blocking glasses?
Anti-blue light glasses are suitable for wearing when using LED digital display devices like TV, computer, PAD, and mobile phone. However, it is not recommended to wear anti-blue light glasses for a long time in daily life, because the anti-blue light glasses filter part of the blue light and the picture will be yellow when viewing objects. It is recommended to wear two pairs of glasses, one pair of ordinary glasses for daily use. A pair of anti-blue light glasses to use for computers and other LED display digital products.
How To Choose Better Night Driving Glasses?
Choose and buy glasses to use a special night with anti - strong night driving lens. The demand is to block 80-90% of the strong lights and harmful lights, and at the same time to make the road more clearly. Choose glasses with thicker lenses, they are more durable and protect the eyes of drivers against irritation and accidental breakage. As common sunglasses and color-changing glasses are only suitable for daytime wear, wearing them at night will seriously affect the driver's vision.
Common light yellow night driving glasses can only block a small amount of light, and is not very suitable for night driving glasses standards. Therefore, in the choice of lenses of night driving glasses, we must do the selection and demonstration of the national authority of the formal institutions to test products, to achieve the desired effect in actual use. Don't buy products that are not up to standards from vendors. Such products not only do not block the lights but may affect the driver to see the road ahead, affecting the safety of the train operation.
How to choose rectangular glasses?
Look at the facial features in the aspect of proportion. If your features are delicate, which makes you look petite, you can choose some wider glasses so that you will increase your mental outlook, making your features prominent. On the other hand, if your features look solid and take up a large space of your face, go for narrower frames, because wider frames will make you look tired and add weight to your head.