SUNGLASESS INFO

Types lens use by Ray ban

THE DIAMOND HARD

Scratch protection system is an exclusive lens surfacing technology from Baush and Lomb that protects lenses from abrasion during outdoor sports or activities. an amorphous diamond surface coating make glass lenses 10x more scratch resistant than ordinary. it also reduces surface friction so water beads easily off the lens. The diamond hard surface is bonded permanently to the lens. it is available in the Ray Ban Survivors Collection.


RB- 50 ULTRA LENSES

Is photochromic and adjust their density (darkness) according to light and temperature conditions. They darken most in cold, bright conditions which make them excellent for winter sports. These lenses also have exceptionally high (99.97%) polarizing efficiency. throughout their absorption range they block a greater percentage of blue light to improve contrast (80%-95% light absorption). Ultra lenses are fitted only to the Bravura model.


B 20 CHROMAX DRIVING LENS

Use Chromax Color Contrast Technology that increases the relative intensity and contrast of critical driving colors(reds, greens and amber). The use of neodymium, a rare earth element, selectively filters light from the driving environment to improve contrast and sharpen details. As a results, traffic signals, brake light and sign appear brighter and easier to see while glare is controlled. an advanced anti- reflective coating significantly cuts rear surface reflections from above and behind (80% light absorption)


GLASS POLARIZED LENSES

Have a polarizing filter to eliminate polarized reflections. These lenses enhance vision in high glare outdoor sports such as skiing, sailing and fishing. the neutral gray lens tint provides true color rendition and because they're made of glass, they offer superior scratch resistance (99.9% polarizing efficiency, 83% light absorption).



CHANGEABLE LENSES

Are available in gray and brown add adjust their depth of color for comfortable vision in any light. Like G15 gray natural vision lenses. changeable brown lenses provide accurate color perception (60%- 85% light absorption). Like B15 brown lenses, changeable brown lenses block haze-causing blue light to improve contrast and sharpen details (30%-80% light absorption)



AMBERMATIC LENSES

Are unique changeable lenses that adjust both color and density for changing weather/light conditions. They change from light amber/brown on overcast day to dark sunglass gray/brown under bright skies. they provide contrast enhancement under all conditions (25%-85% light absorption)

B-15 BROWN LENSES

Sharpen details while cutting glare for better vision under a variety of light conditions. these lenses filter out a large percentage of blue light to improve contrast and sharpen details (85% light absorption)

B-15 TOP GRADIENT MIRROR LENSES

Have all the features of the B 15 Brown Lenses, with the addition of a mirror across the top of the lenses, providing added protection from overhead glare, especially when one is driving (light absorption: 90% at top, 85% centre and bottom)



G- 15 LENSES

Are the most popular general- purpose Ray Ban lenses. with uniform absorption of colors throughout the spectrum, these lenses let colors be seen exactly as they are (85% light absorption). Is useful to avoid UV A/B 400 or 100% protection from sun which radiates ultraviolet causes eye diseases.



RB-3 GREEN LENSES

Have a light absorption curve that resembles the color sensitivity curve of the eye. maximum useful light reaches the eye for top visual acuity (75% light absorption)

Photochromatic Lens

MALAY VERSION

Pernahkan anda melihat kaca mata hitam atau cermin mata menjadi gelap apabila terdedah kepada cahaya matahari? Teknologi enis kaca mata ini pertama kali di bagunankan oleh Corning pada lewat tahun 1960 dan di popularkan oleh Transitions pada tahun 1990. Kaca mata atau cermin mata jenis ini di sebut sebagai photochromic atau photochromatic di mana ianya adalah tindak balas bahan kimia yang mempunyai sifat istimewa untuk berubah kepada warna-warna tertentu apabila lensa cermin mata terdedah kepada pancaran cahaya UV.

Lensa photochromic mempunyai berjuta-juta molekul seperti silver chloride atau silver halide yang terdapat dalam lensa tersebut. Molekul ini menjadikan cermin mata kelihatan jernih jika terdedah pada cahaya nampak dan cahaya lampu biasa tetapi ianya akan berubah warna melalui tindak balas kimia apabila terdedah kepada Ultraviolet yang di pancarkan terus oleh matahari. Jadi bagaimanakah kaca mata jenis ini menjadi gelap? Ianya disebabkan oleh molekul-molekul tersebut akan menyerap cahaya UV tersebut dan berubah kepada bentuk yang baru. Secara kimianya, kadar kegelapan lensa cermin mata atau kaca mata jenis photochromatic ini bergantung sepnuhnya kepada kadar kemasukan atau kadar serapan molekul terhadap sinaran UV.

Warna yang bertukar oleh lens jenis photochromatic bergantung kepada perubahan molekul.

Colour being changed by photochromatic lens depends on their molecule structure.

Jadi apabila anda keluar dari rumah dengan memakai kaca mata jenis photochromatic, anda akan dapat lihat kesanya apabila lensa tersebut bertukar kepada gelap jika terdedah kepada sinaran UV. Proses ini berlaku amat pantas sekali!!!

Original Photobrown dan PhotoGrey keluaran Corning, lensanya diperbuat daripada kaca dimana molekul-molekul tersebut secara rata aturanya. Masalah dengan penggunaan lensa kaca ini dimana ketebalan yang berbeza pada cermin mata memberikan kesan gelap yang berbeza, namun hal ini di atasi dengan menggunakan lensa/lens plastic setelah populariti pengguaan lensa plastik kian popular. Lensa plastik terlebih dahulu di rendam ke dalam chemical bath dan oleh itu cahaya UV yang menebusi lensa tersebut sehingga pada kedalaman 150 microns akan mengubah bentuk molekul tersebut berbanding pada hanya kedalaman 5 microns cermin bercoatingkan biasa. Hal ini menyebabkan kadar kegelapan lensa photochromatic berlaku secara rata. Kaedah ini dikembangkan oleh Transitions, peneraju kaca cermin photochromatic.

Ok last sekali yang paling penting Abang Chik nak terangkan, kaca cermin jenis photchromatic hanya akan bertidak balas dengan kehadiran cahaya UV dan tidak akan bertindak balas terhadap cahaya nampak. Oleh itu jika anda berapa dalam kereta misalnya, pastinya cermin mata anda jenis photochromatic tidak akan bertukar menjadi gelap (atau warna lain bergantung kepada perubahan fizikal molekul) disebabkan terlindung dengan cermin kereta anda dan atau cermin kereta anda mempunyai tinted yang dapat menghalang sinaran UV. Untuk bertukar kepada warna gelap, ianya memerlukan kadar minimum cahaya UV yang tertentu bergantung kepada jenis, model dan pengeluar.

Faktor kehadiran sinaran UV merupakan element penting kepada photochromatic lens.
Present of Ultraviolet influence the change of photochromatic lens.

ENGLISH VERSION

Sunglasses or prescription eyeglasses that darken when exposed to the sun were first developed by Corning in the late 1960s and popularized by Transitions in the 1990s. In fact, because of the extreme popularity of the Transitions brand, these lenses are usually referred to as transition lenses. The correct term for these glasses is photochromic or photochromatic, which refers to a specific chemical reaction the lenses have to ultraviolet (UV) radiation.

Photochromic lenses have millions of molecules of substances such as silver chloride or silver halide embedded in them. The molecules are transparent to visible light in the absence of UV light, which is normal for artificial lighting. But when exposed to UV rays, as in direct sunlight, the molecules undergo a chemical process that causes them to change shape. The new molecular structure absorbs portions of the visible light, causing the lenses to darken. The number of molecules that change shape varies with the intensity of the UV rays.

When you go indoors and out of the UV light, a different chemical reaction takes place. The absence of the UV radiation causes the molecules to "snap back" to their original shape, resulting in the loss of their light absorbing properties. In both directions, the entire process happens very rapidly.

In the original PhotoBrown and PhotoGrey products made by Corning, the lenses are made of glass, and the molecules are distributed evenly throughout the entire lens. The problem with this method was apparent in prescription glasses where different parts of the lens were of varying thickness. The thicker parts would appear darker than the thinner areas. But with the increasing popularity of plastic lenses, a new method has been developed. By immersing the lenses in a chemical bath, the photochromatic molecules are actually absorbed to a depth of about 150 microns into the plastic. This is much better than a simple coating, which would only be about 5 microns thick and would not provide enough molecules to make the lenses sufficiently dark. This plastic lens absorption process has been popularized by Transitions, the leading manufacturer of photochromic lenses.

An important note about photochromic lenses: because they react to UV light and not to visible light, there are circumstances under which the darkening will not occur. A perfect example of this is in your car. Because the windshield blocks out most UV light, photochromic lenses will not darken. For this reason, most sunglasses with photochromic lenses also have a certain amount of tint already applied to them.

What is Ultraviolet

Introduction

Ultraviolet is an electromagnetic radiation with a wavelength is shorter than visible light but longer than x-ray, range between 10nm to 400nm. It named because the spectrum consists of electromagnetic wave with higher frequency compared with human identification.

sun's corona as seen in deep ultraviolet

Electromagnetic spectrum of ultraviolet can be divided in various types.

NAME	ABBREAVATION	WAVELENGTH (nm)
Ultraviolet A, Long wave	UVA	400-315
Near	NUV	400-300
Ultraviolet B, Medium wave	UVB	315-280
Middle	MUV	300-200
Ultraviolet C, Short wave	UVC	280-100
Far	FUC	200-122
Vacuum	VUV	200-100
Low	LUV	100-88
Super	SUV	150-10
Extreme	EUV	121-10

From the above table, generally UV can be divided into 3 major group, UVA, UVB, and UVC. We did not concern so much UVC since they will be absorb by ozone layer. However expose to UVA and UVB will be effected to vision and eye.

As shown gamma waves have the highest energy

and radio waves have the lowest energy

Radiation and your eye

There is many disadvantages of UV, it can burn your skin, skin cancer even worst for your eyes.

Extended exposure to the sun's UV ray may causes eye damage including cataracts, makular degeneration, pingueculae and pterygia and photokeratitis.

We used sunscreen to protect our body, but how about our eye? To protect our eye from the solar radiation, we can used sunglasses.

Wearing sunglasses to protect eye

A good recommendation on choosing good and quality sunglasses is very important. Its can be used when involve in outdoor activity, taking in walk, water sport and even just for relax.

To provide protection on eyes, sunglasses should be :-

• Block 99 until 100 percent of UVA and UVB
• Screen out 75 to 90 percent of visible light

You may refer article i wrote before sunglasses how should you know about them

Remember that sunglasses is not only for adult, it needs for children as well. As logically, children more spending time in the sun compared with adult. If you wearing contact lens, should bear in mind that you still need to wear sunglasses. Why? Because contact lens only covered some part of eye, the other part which exposure to sun ray (UV) might be damage you eye tissue, some more you feel more comfortable too because sunglasses block the bright light.

Wearing hat with sunglasses can protect your eye

Sunglasses and UV exposure

Many misconceptions exist regarding the right sun protection for eyes, beer this in your mind :-

• Not all sunglasses block 100 UV. You may refer to optician for an evaluation. Many of eye care professional have a device called spectrophotometers that can measure that can measure the amount of visible light and UV radiation your lenses can block.
• Remember to wear sunglasses even when you are at shade. Although shade reduce UV and HEV to some degree, eye still exposure to UV ray reflected by building,roadway and other surface.
• Sunglasses important when winter, because fresh snow reflected 80 percent of UV nearly doubling overall exposure to solar UV radiation. So if you are skies or snowboarding, choosing the correct gogg lfor your activity.

Guide UV index

• Even when you have dark skin and eye, you still need to wear sunglasses. Although your dark skin may give you lower skin cancer risk, but you eye is having same risk with another fair skin when exposure to UV radiation.

What is Polycarbonate

ENGLISH VERSION

Polycarbonate is a tough plastic used for a variety of applications among of this by making sunglasses lens. The main advantage of polycarbonate over other types of plastic is unbeatable strength combined with light weight.

Weight of polycarbonate is just 1/3 the weight of acrylic, or 1/6 as heavy as glass, and the only drawback is that it is more expensive than either acrylic or glass.

Compact disks (CD) and digital versatile discs (DVDs) are examples of polycarbonate. You may make an experiment by your own, later tried to break it before throwing it away, you know just how tough polycarbonate is.

This is how polycarbonate look like

Clear polycarbonate can be used as alternatively making lens sunglasses other than glass or c-39, because of its excellent transparency, durability, and high infraction index. This means that it bends light to a far greater degree than glass or other plastics of equal thickness.

Angle Index mirror high = More thickness of lens

Since prescription lenses bend light to correct vision, polycarbonate lenses can be far thinner than glass or conventional plastic, making polycarbonate the ideal material for heavy prescriptions.

Polycarbonate lenses are also used in quality sunglasses that incorporate filters to block ultra-violet (UV) rays. The lenses can also be polarized to reduce glare, and their high impact resistance makes them perfect for sportsman/sportwomen.

Nowadays, many sunglasses manufacturers prefer polycarbonate because it can be easily shaped without problems like cracking or splitting, resulting in extremely lightweight, distortion-free, fashionable glasses that feature all of the health benefits doctors recommend.

Sunglasses ray ban predator using polycarbonate lens

MALAY VERSION

Polycarbonate merupakan salah satu synthetic plastic yang kuat,tahan lasak dan mempunyai banyak keguna antaranya dalam industri pembuatan kanta kaca mata. Keistimewaan polycarbonate adalah sifatnya yang tersangat ringan berbanding dengan plastik lain.

Berat polycarbote hanya 1/3 daripada berat acrylic atau 1/6 daripada berat kaca. Faktor inilah yang menyebabkan harganya lebih mahal jika dibandingkan oleh acrylic atau kaca.

Compact Disks (CD) dan digital versatile discs (DVDs) adalah contoh bahan yang menggunakan polycarbonate. Anda sendiri boleh melakukan ujikaji di rumah berkenaan kekuatan polycarbonate, cuba ambil sekeping CD yang tidak digunakan, kemudian cuba patahkanya, anda sendiri boleh rasakan betapa liatnya dan sukar untuk patahkanya.

Polycarbonate jernih boleh digunakan untuk membuat kanta kaca mata sebagai alternatif menggantikan glass dan C-39. Sifatnya yang transparent, tahan lasak, dan index pembiasan yang tinggi. Ini bermakna, ia bagus untuk membiaskan cahaya ke sudut yang lebih besar berbanding glass atau jenis plastic yang mempunyai ketebalan yang sama.

Secara logiknya, oleh kerana index biasanya yang tinggi bermakanya ianya adalah ideal digunakan sebagai bahan untuk membuat kanta kaca mata, menjadikanya lebih nipis berbanding plastic chemical lain yang mempunyai kadar biasan yang sama (lebih tebal)

Sudut index biasan tinggi = lebih tebal kanta

Polycarbonate boleh juga digabungkan dengan lapisan film bertujuan untuk menghalang sinaran cahaya ultra unggu (UV) selain kanta jenis ini boleh juga di polarizedkan bertujuan mengurangkan lebihan sinaran cahaya matahari menjadikanya kaca mata yang berkualiti tinggi, tahan lasak, sesuai untuk ahli sukan dan yang gemar kepada aktiviti luar.

Nilai sudut biasan bergantung pada jenis bahan

Sekarang, pengeluar kaca mata lebih gemar menggunakan polycarbonate sebagai alternatif kepada kanta glass kerana ia mudah dibentuk tanpa mendatangkan kesan sampingan seperti retak, mempunyai daya tahan yang tinggi, ringan, tidak mempunyai distortation, lebih berfasyen terkini, selain di sahkan oleh doktor kesihatan tiada masalah dari segi kesihatan.

Sunglasses what should you know

ENGLISH VERSION

Some info to know before buying sunglasses

Sunglasses, there's such a huge selection of styles, prices and features that sometimes it's hard to decide which is the best. Finding a sunglasses you love is not easy but if you have the idea is great enough.

What should you looking for sunglasses?Several important things should be taking into account :

• Good eye protection
• Comfort
• Style
• Rare and vintage

UV protection

Sunglasses must provide protection from ultraviolet radiation, a component of sunlight that contributes to eye disease. The sunglasses specialist, recommended sunglasses with lenses block 99-100% of UVA and UVB radiation. The label should read either UV 400 or 100% UV protection.

Sunglasses lens materials

Sunglasses lens materials different a little bit. Some area heavier than others and some types are more durable. Three materials are commonly used for sun-glass lenses:

• Polycarbonate, a durable lightweight plastic.
• CR-39, a plastic used mostly in prescription-grade lenses.
• Glass lens, durable but much heavier to wear. (eg G-15 and B-15)

Sunglass lens tints and other coatings

UV filtering is one of coating that's applied to sunglass lenses, but there are many others:

1) Sunglasses Lens Tints

Colors are applied to sunglass lenses to help absorb light as it passes through them. The color you choose is a matter of personal taste, but there are a few important color-related benefits to consider. Below is the point lens colour related to eyeview :

• Gray lens - tints reduce brightness, but do not distort color.

• Brown and amber tints - reduce glare, including the glare created by the blue frequency in sunlight, which can make things appear hazy. Brown and amber tints distort colors more than gray tints do.

• Yellow lens tints - reduce the haze from blue light better than browns, so they really sharpen up the view, but they cause more color distortion.

• Green- tinted lenses reduce glare and help filter out some of the blue light. They provide good contrast between objects.

• Rose colored lenses - might be a good choice if you participate in water sports or other outdoor activities, because they provide good contrast for objects viewed against blue or green backgrounds.

2) Sunglasses with photochromatic lenses

What is photochromatic (or photochromic) lenses ? It is a special material build inside lens make it become darker or pink (we called pink photochromatic )when exposed to UV radiation. The shift happens quickly as your surroundings change from bright to dim.

3) Sunglasses with anti-reflective coatings

Anti-reflective coatings reduce the reflection caused by light that hits the back side of lenses, keeping it from bouncing into your eyes.

4) Sunglasses with lens scratch resistance

A thin coating can be applied to lenses to make them more resistant to scratches. Plastic lenses scratch more easily than glass lenses.

5) Sunglasses with mirrored lenses

You've seen sunglasses with a mirror finish on the outside of the lenses. They are popular, but mirrored lenses scratch easily because the mirror finish is applied last.

Sunglasses frame components

Sunglass frames are made from many material such as plastic, base metals, titanium, aluminum and many other materials. Try on lots of frame types to compare their weight and to find out which ones feel the best.

Children need sunglasses too

Children need protection from UV radiation and glare, so take care when buying sunglasses for them. Forget about those flimsy little play sunglasses, get them something that will protect their eyes.

Should you choose sunglasses with polarized lenses?

Polarizing films applied to lenses help reduce the glare created when light bounces off of some objects, such as water, highways and other similar surfaces. For me, i much more prefer polarized lenses, but it's a personal view.

MALAY VERSION

Info yang perlu tahu sebelum membeli kaca mata

Kaca mata, mempunyai pilihan yang luas untuk di gaya,pelbagai harga dan ciri. Untuk membeli kaca mata sama ada kaca mata hitam atau biasa tidak sukar jika kita mempunyai sedikit idea dan pengetahuan.

Beberapa faktor yang di ambil kira sebelum membeli kaca mata :

• Perlindungan mata
• Keselesaan
• Gaya
• Jarang dan antik

Perlindungan UV

Kaca mata perlu mempunyai perlindungan cahaya unggu yang merupakan salah satu kompenan cahaya dari matahari yang boleh merosakan mata. Pakar mata menyesyorkan agak kanta kaca mata menapis atau menghalang 99-100% UVA dan UVB, Label yang perlu ada sama ada UV 400 atau 100% UV protection.

Bahan membina Kanta/lens

Penghasilan kanta bagi kaca mata adalah berbeza untuk jenis dan modelnya, ada yang agak berat dan ada pula yang agak tahan lasak berbanding kanta lain yang digunakan. 3 bahan berlainan yang sering digunakan dalam penghasilan kanta.

• Polycarbonate, plastic ringan yang tahan lasak.
• CR-39, a plastic used mostly in prescription-grade lenses.
• Glass, agak berat. (contoh G-15 dan B-15)

Kaca mata bertinted dan coating-coating lain

Terdapat banyak lapisan-lapisan coating pada kanta kaca mata. Lapisan warna yang terdapat pada lensa membantu untuk meyerap cahaya yang melaluinya.

1) Kaca mata bertinted
Warna yang dipilih semestinya tahap citarasa individu sendiri untuk kepuasan. Secara ringkas di bawah saya terangkan warna lensa mempengaruhi penglihatan :

• Lensa kelabu (grey) –Mengurangkan tahap kecerahan cahaya yang masuk kedalam mata.

• Lensa coklat (brown) – Warna ini membantu mengurangkan sinaran cahaya berlebihan (glare) elok di gayakan sewaktu panas terik.

• Lensa Kuning ( yellow) – Ianya mengurangkan percentage cahaya biru (blue light) , merupakan salah kompenan cahaya matahari, jadi penglihatan lebih jelas dan tajam. Dari sigi fungsinya ianya di akui lebih baik dari lensa coklat (brown) tetapi kekuranganya lebihan distortion pada warna.

• Lensa hijau – Juga membantu megurangkan lebihan sinar cahaya dan menghalang cahaya biru. Ianya amat bagus untuk contrast ketika melihat sesuatu object.

• Lensa warna rose – Pilihan terbaik kepada mereka yang gemarkan atau terlibat dalam aktiviti sukan air atau aktiviti luar, kerana lensa warna ini meghasilkan contrast terbaik ketika melihat objek berlatar belakangkan biru dan hijau.

2) Kanta mata dengan kanta photochromatic

Apa itu kanta photochromatic (atau photochromic)? Sebnarnya ia adalah lensa yang mempunyai ciri istimewa, akan bertukar menjadi gelap, atau warna2 tertentu seperti pink phtochomatic jika terdedah pada cahaya unggu. Pertukaran akan berlaku dengan kadar yang cepat.

3) Kaca mata dengan lapisan anti-pantulan

Lapisan anti-pantulan berfungsi untuk mengurangkan pantulan disebabkan oleh cahaya yang terkena pada bahagian belakang kanta menyebabkan kurang cahaya masuk ke dalam mata.

4) Ciri anti-calar pada kaca mata

Terdapat kaca mata yang mempunyai ciri-ciri anti calar pada lapisan cermin. Ianya hanya merupakan satu lapisan nipis yang berfungsi untuk menghalang kaca mata dari calar. Cermin plastik sebenarnya lebih mudah calar jika di bandingkan dengan cermin kaca kerana ia tidak mempunyai ciri-ciri anti-calar pada lapisan lensanya.

5) Kaca mata dengan lapisan cermin

Terdapat juga kaca mata yang mempunyai ciri lapisan mirror pada kantanya. Penggunaanya kini kian popular hari demi hari tetapi kekuranganya ialah ia mudahrcalar kerana lapisan mirror adalah selepas lapisan anti calar.

Bahagian bingkai kaca mata

Bingkai kaca mata di perbuat dari pelbagai jenis bahan seperti plastik, based metal, aluminium, titanium. Mencuba kepelbagaian kaca mata akan membuatkan anda dapat membezakan berat dan jenis yang mana sesuai dan terbaik untuk anda.

Anak anda juga memerlukan kaca mata

Kanak-kanak memerlukan perlindungan dari cahaya ungu dan sinaran matahari yang berlebihan kerana retina mata mereka lebih mudah untuk rosak berbanding golongan dewasa. Dengan pemakaian kaca mata adalah salah satu langkah awal terbaik untuk menjaga mata mereka dari rosak.

PR: wait... I: wait... L: wait... LD: wait... I: wait... wait... Rank: wait... Traffic: wait... Price: wait... C: wait...

Kenapa perlukan kaca mata polarized

Kanta polarized pada lapisan kaca mata bertujuan untuk megurangkan lebihan cahaya terutamanya di sebabkan oleh pantulan dari laut, sungai, atau pada permukaan jalan raya. Jadi secara khususnya, ianya sesuai dipakai oleh pelaut, pemandu, dan mereka yang gemar dalam aktiviti luar dan berair. Pada pendapat Abang Chik, saya lebih menyesyorkan penggunaan kaca mata yang mempunya lapisan polarized walaupun harganya sedikit mahal.

Difference Rayban 3025 and Rayban 3026

Malay edition

Kebanykan orang menggapkan Rayban sunglasses 3025 dan 3026 adalah sama, tetapi pada hakikatnya adalah tidak sama dan anda masih dapat melihat perbezaan tersebut anatara kedua-dua model rayban tersebut.

Rayban 3025 dan 3026 mempunyai persamaan dari segi rekabentuk, tetapi rayban 3026 sedikit besar jika dibandingkan dengan rayban 3025. Model 3026 sesuai dipakai oleh mereka yang mempunyai muka yang agak lebar, tapi kebanyakan mereka lebih cenderung memilih rayban 3025.

Lihat gambar dibawah dan kita dapat melihat perbezaan dari segi saiz:-

perbezaan saiz rayban 3025 dan rayban 3026

Ray-Ban 3025 sunglasses Size:
Mirror width: 58mm nose width: 18mm Frame Height: 48mm leg length mirror: 130mm

Ray-Ban 3026 sunglasses Size:
Mirror width: 60mm nose width: 18mm Frame Height: 50mm leg length mirror: 132mm

English Edition

Many friends said that Rayban 3025 and Rayban 3026 are the same, but in fact, careful analysis you can still see a difference.

Rayban 3025 and Rayban 3026 are preferred in same style and design, but when take a closer look you still can see the difference between them .

Rayban 3026 is slightly larger than 3025 for larger face , most people had enough to wear 3025.

The above picture shown the difference between rayban 3025 and 3026.

Ray-Ban 3025 sunglasses Size:
Mirror width: 58mm nose width: 18mm Frame Height: 48mm leg length mirror: 130mm

Ray-Ban 3026 sunglasses Size:
Mirror width: 60mm nose width: 18mm Frame Height: 50mm leg length mirror: 132mm

Types of lenses used by Ray-ban

Malay Version

Ok disini Abang Chik akan berkongsi info tentang lens atau cermin kanta yang digunakan oleh Rayban kerana terlampau banyak yang bertanyakan saya tentang hal ini.

Sebenarnya buat pengetahuan anda, Rayban mempunyai empat jenis lens iaitu B15 XLT lens, G15 XLT lens, polarised lens dan normal lens (saya tidak akan bincangkan disebabkan tiada ciri istimewa lens jenis ini).

1) B15 XLT lens
Ray ban yang menggunakan lens B15 XLT lens adalah selalunya bewarna brownish, ianya menghalang 100% sinaran UV dan hanya membenarkan 15% sahaja cahaya nampak yang melaluinya (85% lagi akan ditapis). Lens brownish ini akan menapis dan mengurangkan jumlah cahaya biru yang memasuki mata. Cahaya biru merupakan cahaya yang mudah dikesan oleh mata manusia dan memberikan corak dan kesan terhadap penglihatan manusia.

G-15 lens yang digunakan rayban clubmaster

2) G15 XLT 

Lens jenis ini mempunyai ciri yang serupa seperti B15 XLT tetapi bezanya ia bewarna greyish/greenish .G-15 lens sebenar dibagunkan oleh Ray ban untuk kegunaan tentera Amerika dengan design Aviator.
Cabaran untuk membangunkan lens G-15 adalah "colour natural” dengan kata lain, lens G-15 XLT menapis cahaya seperti mana mata manusia melakukanya. Jika anda mahukan lens yang memberi kesan contrast yang yang minimum antara colour, lens G-15 XLT adalah sesuai dengan anda kerana memberikan colour sensitivity kepada mata manusia. Ini bermakna warna yang anda lihat melalui lens akan secara semulajadi dan secara lembut masuk kedalam retina mata.
Kedua-dua kanta B15 XLT dan G15 XLT mempunya ciri anti-calar. Kualiti kedua-dua jenis kanta ini sangat unik dan hanya dimiliki oleh ray ban.

Contoh Lens G-15 yang digunakan oleh Rayban

3) Polarized Lens
Kanta polarized penting untuk memotong kuantiti cahaya “glare” yang di hasilkan oleh pantulan permukaan seperti air atau semi-transparent object dan juga pantulan dari permukaan metal.“Glare” bermaksud kesukaran untuk melihat sesuatu dalam cahaya yang terang.
Cahaya matahari, sebagai contoh akan memacarkan cahayanya melaui radiation secara rawak pada semua arah. Kanta jenis polarized sesuai untuk pemandu/penunggan motosikal yang sukar untuk melihat disebabkan cahaya terang ketika memandu (selalunya matari berada pada kedudukan depan pemandu).
Kanta polarized mempunyai permukaan “laminated” dengan vertical stripes yang dibaluti filter, dimana berfungsi untuk cut-out cahaya lintang dengan hanya membenarkan cahaya tegak (vertical-light) untuk melaluinya. Dengan kata lain, jika anda memakai kanta polarized, anda akan melihat secara baik jika berada berhampiran laut atau tasik serta ketika pemanduaan.

wayfarer yang menggunakan kanta polarized

4) Lens Base
Kanta jenis ini lebih merujuk kepada base curve atau front curve diukur dengan menggunkan istilah “diopters”, term yang digunkan oleh opticians. Oleh itu, anda dapat melihat pada ray ban aviator mempunyai “Lens Base 6” bermakna mempunyai curved,design dan fungsi sebagai kaca mata.

English Version

Ok here Abang Chik will be sharing some info some info regarding lenses used by Ray ban. Since so many people asked me and here i used to explain as well as i can.

Actually Ray Ban uses four different types of lenses for their sunglasses. The B15 XLT lens, the G15 XLT lens, polarized lenses and normal lenses, which we won't discuss here because there's nothing special about them (they just come in different colours).


1) B15 XLT Lens

Ray Ban B15 XLT lenses are brownish in colour, block 100% of all UV rays and allow only 15% of the visible light to pass through them (that's an 85% reduction!). These brown lenses also offer a bit more contrast by cutting down on the amount of blue light. Blue light is very easily captured by the eye and has the effect of softening other colours that are harsher to our vision.

2) G15 XLT Lens

The G15 XLT lenses have the same properties as the B15 XLT lenses, however they're of greyish/greenish colour. The G15 lens is the original aviator lens that the military requested Ray ban to develop. The challenge was to design a lens that was "colour neutral"; in other words, a lens that filters light like the human eye does. If you want a lens that offers a little less contrast between colours, then the G15 XLT lens is for you because it offers similar colour-sensitivity to the human eye. With a lower contrast lens, the difference in colour and brightness of objects will be dampened. This means that the colours you see through these lenses will be natural and soft on the eyes.

Both the B15 and G15 XLT lenses are made of impact resistant optical glass that is naturally scratch resistant. Quality and stability are remarkable and over time you will notice virtually no fading whatsoever in the colour.

3) Polarized Lens

Polarized lenses essentially cut down the amount of glare produced by reflective surfaces like water or other semi-transparent objects, and even some metallic surfaces. Glare refers to the difficulty of seeing in bright light.

Sunlight, for example, bounces off surfaces in all directions (i.e. vertically, horizontally or diagonally). For people who are active in the "horizontal plane", it means that the bright sunlight bounced horizontally enters the eye in a similar fashion. This causes the pupils to constrict and significantly reduce contrast. That's why drivers have difficulty seeing the road ahead of them if they're driving in very sunny conditions (if the sun is ahead of them).

Polarized lenses have a laminated surface with vertical stripes that create a filter, which effectively cuts out the horizontally-polarized light and allows only vertically-polarized light in. In other words, if you happen to be on a clear lake you can probably see under the surface or if you're driving, you can now see the road ahead.

4) Lens Base

The lens base simply refers to the base curve or the front curve of the lens measured in "diopters", which is a term that really only matters to opticians. You'll find that many Ray ban aviators have a "Lens Base 6", which basically means that they're sufficiently curved and designed to to function as sunglasses