Edwin Herbert not only founded the Polaroid company, but according to one version, he came up with polarizing glasses. According to another theory, he only perfected someone else's idea. We are not capable of reasoning about history, but we can enjoy its fruits - reliable and eye-friendly accessories like the Polaroid.
What is the difference between polaroids and ordinary sunglasses?
Polaroid glasses are an even more useful device. They work due to a polarizing filter that does not allow horizontal light waves, which are optical noise . Due to this, it becomes possible to consider the surrounding objects:
- during the bright sun, fog, twilight;
- shiny and iridescent (for example, only snow that has fallen in dazzle in bright sun ceases to dazzle);
- located on the water.
Important! Polarizing glasses are less effective when the sun is at its zenith.
Polarized glasses can be optionally equipped with a UV filter. This combination provides the highest level of protection and eye comfort, because the Polaroid itself delays only 50-70% of ultraviolet radiation and needs an additional restraining factor . Original Polaroid products are necessarily impervious to ultraviolet radiation. Make sure that such a function is available does not hurt if you want to purchase not a fake.
How to understand that you are buying the original?
Important! If there is no smartphone at hand, ask the seller to give test strips. Their absence should alert, but it is too early to refuse to buy. You just need to bring the glasses to the LCD monitor of the computer or trading equipment, and then turn the frame 90 degrees. Original lenses will darken from this manipulation.
The presence of UV rays is checked differently using a spectrometer . The device is present in optics and shops specializing in the sale of sunglasses - in other words, it is everywhere where it is worth looking for the original Polaroid . You just need to ask the seller to provide access to the device. It, in the case of ultraviolet protection in the glass, will show UV400. A valid but less desirable UV380 value. Such a couple will cope with the task, but still not as effective as we would like.
After checking the characteristics of the lenses, proceed to the study of the complete set of goods . Landmarks that will help confirm the originality of the Polaroid:
Passport. It is laminated, has a Russian-language section. On the last page there is information on compliance with European quality criteria, a barcode, model identification number. Last, do not be lazy, check on the official website of the manufacturer. Manufacturers of fakes often indicate non-existent articles.
- Packaging. It can be solid or fabric. In the latter case, there is an ordinary cloth bag. Both packages must have the manufacturer’s logo.
- The final step is the examination of the arms. An engraving should be present on the right (the brand name is placed on the outside) and an indication of the model, type of lenses, light protection density (the inscription is performed on the back inside of the left earhook).
Tips for choosing polarizing glasses
Well, do not try to save . The average cost of a pair of points Polariod: 60-100 dollars. If the price tag is lower than this reference point by 40–70%, then you can not even hope for the original.