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It seems like a small change, going from 1.5 to 1.6. But that one-tenth decimal is the difference between having coke bottle glasses and something more modern and lightweight. This is especially nice for people who require a stronger prescription. Stronger prescriptions traditionally mean the patient needs thicker glasses in order to see 20⁄20. But with these improvements in the refractive index, someone with a strong prescription can achieve 20⁄20 vision with thinner and lighter glasses.

Thorlabsbeam splitter

So, no, you probably don’t need high index lenses. But when we examine your eyes and begin testing prescriptions, it’s good for us to know what materials are available for your ultimate comfort. Afterall, you’re going to be wearing your glasses all the time! If they aren’t comfortable, then something’s not right. But thanks to improvements in lens materials and having high index options, we can provide you with a best-fitting option that is both comfortable to wear and offer better vision.

MSE Supplies offers Polarizing Beam Splitter Cubes with surface quality of 20/10 (For the size of 50mm, the surface quality is 20/10-40/20) Scratch/Dig, surface flatness of L/8 (For the size of 50mm, the flatness is L/4-L/8), angle tolerance up to one arcminute and split ratio T:R (transmission vs reflection) tolerance up to 3%.

Thank you for trusting MSE Supplies. Your quote will be emailed to you momentarily. For any questions, please contact us at sales@msesupplies.com.

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If you’ll recall from our last blog, we dipped a little into the science behind choosing the right lens materials. Each material has something unique to offer and has its own properties, but one of the primary ways they can be deemed good enough to meet the standard of prescriptive lenses is by its placement on the refractive index.

Sometimes a higher index isn’t always the best solution, either. Sure, it’s good to know it exists, but high index lenses aren’t really necessary for most prescription lenses. CR-39, Polycarbonate, and Trivex all offer spectacular lens options without having a 1.60 score like our high index lenses do. It’s all about finding what fits best, without overdoing it.

Thank you for trusting MSE Supplies. Your quote will be emailed to you momentarily. For any questions, please contact us at sales@msesupplies.com.

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Remember that car mileage metaphor from before? That’s a very generalized explanation. Honestly, it goes even beyond eyewear! The refractive index is a measurement of how light travels through any given material.

Light is refracted differently in certain materials. The way it refracts in water is different from how it refracts in plastic or glass. It all depends on the material and the density of said material of what the light is hitting. The refractive index measures how efficient this refraction is. The higher the number on the index, the slower light travels through the medium, the more the light is bent, and ultimately – the more efficient the refraction is. For the use in eyewear, a higher score on the index means less material needs to be used to achieve a desired effect.

Dichroicbeam splitter

We provide high precision polarizing beam splitter cubes with edge length between 5-25.4mm and 50mm, wavelength between 300-2000nm and splitting ratio between 3:7 to 9:1 as standard products. This page is about wavelength 1500-2000nm. Other parameters, including larger size, higher precision, can also be customized. Please contact us for customization.

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Beam Splitter (also known as Beamsplitter) is an optical element that splits a beam of light in two. It can also reverse the process by combining two beams of light into one. By shape, it can be classified into cube beam splitters and plate splitters, in which the key optical element is splitter cube and splitter plate, respectively. A beam splitter cube is constructed by gluing two right angle prisms together to form a cubic shape. Dielectric coating is applied to the hypotenuse of one of the prisms to separate the incident beam. There are two models of beam splitter cubes: polarizing and non-polarizing. The polarizing beam splitter cube allows the p-component (light has electric field that is oscillating parallel to the incident plain) to pass while reflect the s-component (light has electric field that is oscillating perpendicular to the incident plain). While the non-polarizing beam splitter cube only splits the light by intensity but is oscillation direction independent. Different coating can split light of different wavelength, including near ultraviolet light (<400nm), visible light (400-700nm), near infrared light (700-1100nm) and infrared light (>1100nm). Beam splitter is widely used in many optical systems, such as interferometers, optic telecommunication, etc.

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Not only that, but understanding the index means current eyewear lenses can be picked out by a patient and favored for their prescription. It allows for us to make better recommendations and more accurate readings for what a patient needs to gain perfect vision.

A quick experiment at home: fill a drinking glass with water and then dip a pencil into it. You’ll notice by looking at the glass from the side how the pencil in the water seems disconnected from the pencil above the water. It’s the same pencil, but light bends in water, causing the pencil to look different. This is refraction!

First, higher doesn’t always mean the lens is better. The refractive index is only one part of the equation. Other things like Abbe values (the amount of distortion or aberrations) and optics play a vital role in determining if any given material will perform more or less than any other material.

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Like any technology, understanding and refining refractive index will only advance. The glasses we have today will seem archaic in the future, simply because technology is always improving. By understanding the refractive index, scientists can look for more ways eyewear can be innovated.