Frequently Asked Questions

1/ What exactly are UV rays?

2/ What are the different kinds of lenses that are available @ polarize4u?

3/ How Do Polarized Lenses Work?

4/ Are the more expensive sunglasses of better quality?

5/ I wear glasses. What options are available to me at polarize4u?

6/ How can I determine which clip-on will best fit my prescription glasses?

7/ How can I contact Polarized4u?

8/ How can I determine which sunglasses shape will best fit my face?

9/ Why are there different color lens tints for sunglasses?

1/What exactly are UV rays?

Ultraviolet (UV) rays are located just past the violet portion of the visible light spectrum; sunlight is the main source. UV light is broken into three different types: UVA, UVB and UVC. UVA has longer wavelengths and passes through glass easily; experts disagree about whether or not UVA damages the eyes. UVB rays are the most dangerous, making sunglasses and sunscreen a must; they don't go through glass. UVC rays do not reach the Earth because its atmosphere blocks them.

 

 2/What are the different kinds of lenses that are available @ polarize4u?

Polarized Lenses-These lenses are great by the water or for driving. A good example of how these lenses work. While driving in your car you often see the glare of the dashboard or if you have a white piece of paper on the dashboard for example you see its reflection off the windshield. Having a polarized lens virtually eliminates this reflection and all of this type of glare (horizontal glare). These lenses are laminated and have a polarizing film inside the lens.

Mirror-Coated Lenses - limit the amount of light entering your eyes, so you're more comfortable.

Night Driving, Computer, Shooting Lenses - High contrast Yellow lenses, enhanced vision while night driving, brighten up the dark road lenses, eliminate oncoming headlight glare, Superb eye comfort in changing daylight condition, to see high contrast and sharp details in haze, fog, rain, even on snow or water

Polarized & Mirror Coated Lenses - These lenses are laminated and have a polarizing film inside the lens plus multi layers color mirror coated lenses,  which will limit the amount of light entering your eyes, so you're more comfortable, plus Anti-Glare, block 100% of the sun's harmful UVA and UVB rays.  Highly recommends for Boaters, fishermen for their  used  polarized sunglasses to reduce reflected glare from the water surrounding.  Besides boaters, outdoor enthusiasts who benefit the most from polarized sunglasses include skiers, golfers, bikers, and joggers, who enjoy a clearer view along with elimination of glare.  These sunglasses can be used for driving and, in fact, can reduce glare from a long, flat surface such as the hood of the car or the road's surface. Polarized sunglasses can also be used indoors by light-sensitive people, including post-cataract surgery patients and those continually exposed to bright light through windows.

Night Driving & Polarized Coated Lenses - Polarized Sunglasses with Low Density Yellow Lens is useful in knocking down glare while enhancing available light. The Low Density Yellow polarized lens is truly the most multi purpose lens, ever manufactured.  Although this lens was originally intended to eliminate the glare off the surface of the water while Fishing & Boating, It is just as effective for Indoor and Outdoor sports, Shooting, Hunting, Cycling, Golf, Skiing, Racket Ball, Tennis as well as night driving and driving under most conditions, such as Fog, Haze, Rain, overcast weather and much much more!

Bifocal Color Tinted Sun Reader Lenses -

Bifocal Polarizing film inside  Sun Reader Lenses - Anti-Glare, block 100% of the sun's harmful UVA and UVB rays. The bottom of these lenses have tinted power magnifier built in for your convenient. Highly recommends for Boaters, fishermen for their  used  polarized sunglasses to reduce reflected glare from the water surrounding. Besides boaters, outdoor enthusiasts who benefit the most from polarized sunglasses include skiers, golfers, bikers, and joggers, who enjoy a clearer view along with elimination of glare.  These sunglasses can be used for driving and, in fact, can reduce glare from a long, flat surface such as the hood of the car or the road's surface. Polarized sunglasses can also be used indoors by light-sensitive people, including post-cataract surgery patients and those continually exposed to bright light through windows.

Gradient lenses - are tinted from the top down, so that the top of the lens is darkest; they're good for driving. Double gradient refers to lenses that are also tinted from the bottom up: the top and bottom are darkest and the middle is clear

 

3/ How Do Polarized Lenses Work?

These lenses are great by the water or for driving. A good example of how these lenses work. While driving in your car you often see the glare of the dashboard or if you have a white piece of paper on the dashboard for example you see its reflection off the windshield. Having a polarized lens virtually eliminates this reflection and all of this type of glare (horizontal glare). These lenses are laminated and have a polarizing film inside the lens

The easiest way to preview the effects of polarization is to wear polarized sunglasses. Just remember when looking at a scene to tilt your head from side to side to change the angle of polarization. If you feel that this makes you look like a bird searching for food, simply take the sunglasses off and hold  them in front of you as you rotate them.

 

4/ Are the more expensive sunglasses of better quality?

Not necessarily. While expensive sunglasses are usually high quality, you can also get a good pair for under $50 if you're a careful shopper. Just make sure to check that they provide adequate protection from UV light and are free of distortions.

 

5/ I wear glasses. What options are available to me at polarize4u?

clip-on -- Type of glasses that attaches to your regular glasses, such as clip-on sunglasses.  There are three types of Clip-on available at Polarized4u: Polarized lenses, Night Driving Lenses, Color Mirror Lenses, We have a large variety of sizes and shape for you to pick you best fit.

 

6/ How can I determine which clip-on will best fit my prescription glasses?

There are Three ways:

1. Measure your Glasses (Recommended)

   

    - Step 1: Measure you glasses with following temple

   

                 2. Take The number directly from your glasses arm pieces, But you still have to measure your Lenses Height

                                - Step 1:

                                              Most Prescription Glasses frames have the size printed on them usually on the inside of the arm. If you have, or have access to a pair of glasses

                                              which you feel comfortable with, you can use these sizes as a guide, i.e. 46-20-135. 

                                              The first number represents the lens width, the second number is the nose bridge width (which is taken from half way down the frame were the

                                              nose pads are screwed to the frame),  the third number is the length of the arm

                                            (see   diagrams below).

 

                                              Note:  This method only show the Lens Width, you still have to measure your Lens Height.

                                 - Step 2: Go to Polarized Clip-On or Night Driving Clip-On, or Color Mirror Clip-On choose the shape that are best match you glasses.

                                 - Step 3: Take the measurement from step 1, choose your clip-on.  Note: If your exact dimensions falls between two different size clip-on, we recommend that you pick the larger of the two.

                 3.  After tried the two method above and still can't figure out which Clip-on will best fit your eyeglasses

                                             -  Take your eyeglasses, put on a piece of paper, trace (draw) the lenses of your eyeglasses,  please also include you email or telephone number,

                                                               MAIL to polarized4U.com  3422 Ambum Ave San jose, CA 95148                                                              

                                                               OR  FAX to us 408-493-4403 both sketch  and measurement (height and width) of the lenses

7/ How can I contact Polarized4u?