Jiangsu, China
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Peak season lead time: one month
Off season lead time: within 15 workdays
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Optical Lens, Optical Mirror, Optical Window manufacturer / supplier in China, offering Optical Flat with B270 Material, Wholesale Prescription 1.56 Progressive Eyeglass Lenses Optical Eye Lens, Cr39 1.56 Single Vision Effect Hmc Hard Multi Coated Stock Ophthalmic Lenses Price and so on.

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Optical Flat with B270 Material

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Purchase Qty. / Reference FOB Price
10-99 Pieces US $12
100+ Pieces US $8
Port: Shanghai, China
Production Capacity: 50000piecs/Month
Payment Terms: T/T, Western Union, Paypal
Usage: Optical
Type: Convex Lens
Transmittance: 90%-95%
Shape: Ball, Hemisphere
Material: Optical Glass
Lenses Color: Clear

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Basic Info

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General Information

It is a substrate polished to high precision were material change of the shape is very small due to the temperature variation. It can be used as test plates of the interferometer and the Newton test plate.

Inspection data of interferometric surface accuracy is provided with the optical flats.
You can select the required optical flat from our range of products listed by various sizes and surface accuracy.
In the high-precision and large size optical flats, a material having a lower thermal expansion than synthetic fused silica is used.
Arrow on the side of the component indicates the surface that is polished to the high surface accuracy.
Optical flat are delivered in case for storage.


Zerodur® is a registered trademark of SCHOTT AG.
CLEARCERAM® is a registered trademark of Ohara Corporation.
Wedge substrates are also available that can be used to prevent the influence of back reflection (WSB / WSSQ / WSSQK).


When used as a Newton test plate, it may scratch the sample if used improperly. If inspecting an object that is easily scratched, use a laser interferometer.
The number of Newton rings is approximately twice the value of the PV result of analysis by interferometer.
Optical flats are not coated in order to maintain the surface accuracy. If you need a coating, please contact to our Sales Division.
If there is a crack or chipping visible on the edges of an optical flats, the damage may have reduced the surface flatness. Please do not use damaged optical flats as they should be replaced.

Common Specifications
MaterialSynthetic fused silica 
Low Expansions glass (ZERODUR® or CLEARCERAM®-Z)
Surface Quality 
Rear surfacePolished
Clear aperture95% of the diameter

Optical Flat with B270 Material
Optical Flat with B270 Material

Customized Service

Optical Flat with B270 Material

Optical Flat with B270 Material
Optical Flat with B270 Material

Contact Information

Amy Kuang
Mobile :+86-18896708039


Optical Flat with B270 Material

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