What is a sapphire lens?

Sapphire Windows
 

  ● Features Extreme Surface Hardness Chemical Resistance

  ● Transmits Wavelengths Ranging From UV to Mid-Infrared

  ● Thinner and Stronger than Standard Glass Windows

  ● Anti-Reflection Coating Options Covering 400 - 5000nm Available

What are Sapphire Windows?
   Sapphire is a synthetically grown super hard material that is extremely durable and resistant to scratches. It second only to diamond in terms of its strength. Sapphire windows can withstand more than what quartz and conventional glass can, and at a fraction of the thickness. Sapphire crystals are "grown" in extremely hot ovens. The large, cylindrical boules are cut into sapphire rods, which are then sliced into thin discs, ground, and polished.

 

Video Show of Sapphire Windows with diameter 45.29mm.


We also produce other dimension of sapphire flats, please contact us for more information.

What is a sapphire lens?
 
 Sapphire is an extremely durable and scratch resistant substrate which creates a rugged optical lens that can stand up to very harsh environments. Sapphire lenses will add to the long lasting value of your project or product. Perhaps you are constantly replacing your product's glass lenses due to damage.

Uses of Sapphire Windows
    Sapphire windows are used when sapphire's unique properties – high strength, high scratch resistance, wide optical transmission band, extremely high melt temperature, high thermal conductivity, high electrical resistance and chemical inertness – are required.
1) Commercial Uses
    There are many commercial uses for sapphire. Among the most commonly known are the sapphire display windows that are used to protect the phones’ optics. Newer iPhones use sapphire windows because their fracture toughness is roughly four times greater than Gorilla Glass, which is just strengthened conventional glass. Prior to the smartphone revolution, most consumers’ consumers’ experience of sapphire came from the displays used in most high-end watches.
2) Military Uses
    No industry requires reliable, durable materials more than the military, so it’s no wonder that sapphire windows are in high demand. Sapphire maintains its characteristics when under high pressure, high heat, acidity, high impact and pretty much everything else you can imagine. This makes sapphire ideal for protecting vital optics, lasers, etc. Military as well as commercial air, ground and water-borne vehicles use sapphire to protect vision systems, sensors, cameras, and lasers. Submarines also use sapphire for its resistance to high pressure and its resistance to saltwater abrasion.
3) Medical Uses
    Sapphire windows are widely used in medicine. One of the most common medical applications is within the endoscopy market. Endo, comes from the Greek ‘internal’, and scopy comes from the Greek ‘viewing’ or ‘observation’. Endoscopic instruments contain small cameras and are introduced into the body of the patient to allow doctors to perform operations, make diagnoses, and observe. Sapphire windows are used to protect endoscopic instruments because they are scratch resistant, easy to clean and disinfect, and chemically inert. What's more, they can be used for years and years without having to be replaced.

People Also Ask:

How good is sapphire glass?
   Sapphire is extremely strong and scratch resistant – making it the top choice for a fine timepiece. While sapphire is the more expensive of the three crystal choices, it has its advantages due to the scratch and shatter resistance.

Is sapphire glass unbreakable?
   Your next iPhone or Android device may very well have a sapphire screen. ... “So, withsapphire, because you cannot scratch it, it doesn't break. So if you drop your phone, or abuse it, it won't break. It's very very rugged.

Is Sapphire stronger than Gorilla Glass?
   Sapphire might be more scratch-resistant, but its ability to withstand a drop-induced bend or deformation isn't as great as Gorilla Glass. Sapphire might be more scratch-resistant butGorilla Glass can bend more during a four-point bend test.

Does Apple use sapphire glass?
   Sapphire glass is an extremely durable material. ... Apple's investment in a sapphire glassmanufacturing plant turned out to be for the Apple Watch. The Apple Watch uses sapphire glass, however, it's a fairly small screen. It's simply too expensive to use sapphire glass for a smart phone screen.

Is sapphire glass expensive?
   They are a little more expensive than plastic or acrylic crystals but are significantly more scratch resistant. They are made of glass. ... (One reason sapphire crystals are relativelyexpensive is that the tools required to cut and polish this extremely hard material are verycostly.)

Is sapphire glass Real Sapphire?
   Sapphire glass, is made synthetically and isn't actually considered a glass but a crystal. Thesapphire crystal is made in very high temperatures and it made up from crystalline aluminium oxides. ... The harder and less likely to be scratched the glass is, the less it can take impacts.


How do I know if my watch glass is sapphire?
   Tap a sapphire crystal you know is genuine and then tap the watch you are questioning and you'll be able to tell if there is a difference regardless of how thick it is. Or just look at it. Ifthere are any scratches on it then it isn't sapphire.

Which is better mineral or sapphire crystal?
   Mineral crystal is break resistant but scratches relatively easily; whereas sapphire crystalmeasures very high at 9 on the Mohs scale (hardness), a rating measure of the relative hardness of various materials. ... Sapphire is extremely scratch resistant and this kind ofcrystal will look like new for years.


How can I tell if my sapphire is real?
  Look for Flaws

   Use a magnifying glass or a jeweler's loupe to check for impurities and flaws within yoursapphire. Check for small flaws or specks within the stone. These are an indication that your stone is real. Lab-created sapphires are generally flawless in their composition.

Can sapphire crystal crack?
   Sapphire is very strong and scratch resistant and is a more expensive crystal than the others. The advantages to a Sapphire crystal include its resistance to scratches, shattering, it can withstand cracks and a lower chance of breaking.


Does Sapphire break easily?
   This is because Sapphire is made of corundum and has hardness of 9 Mohs Scale .Sapphires are very durable and ideal to worn everyday. Like diamonds, they are not easilyprone to chipping, cracking or breaking. They are perfect for people where jobs require them to use their hands for rigorous activities.


What can damage a sapphire?
   While sapphires and rubies can be damaged in various ways during the repair or creation of jewelry, heat is the most common culprit. It's not that corundum is sensitive to heat, but that overconfident jewelers can sometimes mishandle the heat's application.


What color sapphire is the most expensive?
  Blue Sapphires
   The most valued blue sapphires are velvety blue to violetish blue, in medium to medium-dark tones. Sapphires with these qualities command the highest prices per carat. Less valuable blue sapphires might also be grayish, too light, or too dark.

Common Specifications of Sapphire

Abbe Number (vd)

72.24

Axis Orientation

Random

Bevel

Protective as needed

Birefringence (no-ne)

0.008 for Visible Light Orthogonal to Optical Axis

Clear Aperture (%)

≥90

Coefficient of Thermal Expansion CTE (10-6/°C)

8.8

Density (g/cm3)

3.97

Edges

Fine Ground

Index of Refraction nd

1.77

Knoop Hardness (kg/mm2)

1900

Parallelism (arcmin)

≤3.5

Poisson's Ratio

0.27

Substrate

Sapphire (Al2O3)

Surface Flatness

2λ (typical)

Surface Quality

80-50

Surface Roughness (μm)

0.1 per Inch

 

VY Optoelectronics CO.,Ltd. is your Source for Sapphire Windows, VY Optics can produce custom sapphire windows up to 8″ in diameter. Our capabilities include traditional single-side processing as well as double-side lapping and polishing for an efficient yield, exemplary parallelism, and typical flatness of 1/4 wave up to 1/10 wave flatness.

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