Continental Trade Sp. z o. o.

Technical glass

Sapphire products

Sapphire, is one of the hardest, most durable and scratch resistant materials, offers a broad transmission range from UV to mid infrared wavelengths (250–5000 nm). The material is able to withstand extreme environmental conditions and temperature changes. We offer sapphire products in different forms (shapes), dimensions, and in customized processing stages, made by the world's leading producers. This ensures the high quality of products and parameters stability.

The main features of the sapphire are described on page Sapphire products in chapter: Our offer/Technical glass/Types of materials 

There are different shapes (from round to square) and dimensions available. There is a possibility of customized processing: polishing and coatings (e.g. antireflective coating). Products can be made in three levels of accuracy (see. table below).

Attribute Quality level
Standard Precision Ultra precision
Size  round diameter from 10 to 300 mm
 square side        from 10 to 210 mm
Size tolerance1 ± 0,2 mm ± 0,10 mm ± 0,05 mm
Thickness1 from 1 to 40 mm
Thickness tolerance1 ± 0,2 mm ± 0,10 mm ± 0,05 mm
Parallelism1 < 5 arc minutes < 1 arc minutes < 30 arc seconds
Surface Accuracy (PV)1 5λ (546 nm) λ/2 (546 nm) λ/10 (546 nm)
Surface Quality
60 - 40 40 – 20 20 – 10
Surface Roughness (Rq) < 10 nm < 3 nm < 1 nm
AR Coating custom designed
Order quantity upon customer specification, please call us.
Delivery Time (week) 6 – 10 weeks, upon raw material availability
Upon geometry
2 according to MIL-REF-13830B

We offer sapphire material in optical quality and with customized characteristics, concerning dimensions and shapes (round, square, and more, diameters up to 300 mm). Type surfaces and coatings applied depend on the client's application. Our suppliers have extensive experience in manufacturing and processing of sapphire glass,  uses most advanced equipment and state-of-the-art metrology for manufacturing and quality control, which guarantees high quality of products and parameters stability.

Scrach-dig - what does it mean ?
An illustration of scratchdig evaluation
An illustration of scratchdig evaluation

The surface quality of an optical component is an evaluation of the surface imperfections that may be caused in the manufacturing or handling process. The most common specification used to describe the scratch-dig specification is the one used in the U.S. Military from MIL-REF-13830B; General specification governing the manufacturing, assembly, and inspection of Optical Components for Fire Control Instruments

The imperfections are specified by the typical designation of "20-10", "60-40", or "80-50". The first number (in simplified) indicates the maximum width allowance for a scratch measured in microns, and the second number is the maximum diameter for a dig in hundredths of a millimeter. Thus, 60-40 means the apparent width of the scratch is 60 microns and the diameter of permissible dig is 0,4 mm. 

80-50 Very Low Acceptable quality, can be easily fabricated
60-40 Low Commercial quality, used for non-critical low power laser and imaging applications, where scattered light is not as important as cost.
40-20 Moderate Standard scientific research applications for low to moderate power laser or imaging, which tolerate little scattered light.
20-10 High Precision quality, minimum standard for laser mirrors and extra-cavity optics used in moderate to high power laser. Minimizing scattered light.
10-5 Very High High precision quality, used for the most demanding applications such as intra-cavity laser optics or high power applications.

While every attempt has been made to verify the source of the information, no responsibility is accepted for accuracy of data.

Information clause

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Administrator, ie the entity deciding on which personal data will be processed and for what purpose, and in what way, is Continental Trade Sp. z o.o. (hereinafter "Continental Trade" or "We") with its registered office and address in Warsaw at Krasnobrodzka Street 5.

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Continental Trade processes your personal data to enable you to use our services, match the displayed content and ads to your interests, measure quality and effectiveness, improve content and services.

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To whom does Continental Trade share your personal data?

Continental Trade, in principle, does not share your personal data with third parties, except for situations in which Continental Trade has a legal basis, including at the request of authorized entities, or when it is necessary to perform services offered by Continental Trade, e.g. entrepreneurs providing hosting of our services.

How long does Continental Trade store your personal data?

Continental Trade stores Users' personal data only for the time that is necessary to achieve the purposes for which the data was collected and provided that one of the legal grounds described above is up-to-date or when a new ground has appeared, e.g. a law or the need to enforce claims in court proceedings.

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More information on the protection of your personal data can be found in the Cookie Policy and Security Policy documents published on our website