Witness Samples

Name: Witness Samples
Brand: ECOPTIK(CHINA)LTD

Coating on different optical surfaces, including spherical, aspherical, planar, etc., but how to better detect the performance of thin film? The usual landscape photometer detection systems are suitable for plane detection, from which the witness samples are derived. Through the witness sample, the transmittance, reflectivity, actual applicable temperature, moderate and so on of the film can be detected.

Uses Witness Samples 

Descriptions Specifications

Descriptions

Descriptions of Witness Samples

The witness samples provided by Ecoptik China include a full range of brands such as CDGM, Schott, CORNING, etc. The general diameter is about 1'' and the thickness is 1-3mm, which basically adapts to the size of standard spectrophotometer tools.

Ecoptik China witness samples be polished one side or both surface according to the customers' requirement to be used meet for transmit or reflect thin film coating.

Specifications

Specifications of Witness Samples

Specification of witness samples
Diameter	20mm-25.4mm
Thickness	1mm-3mm
Clear aperture	> 85% of diameter
Surface quality	60/40 or better
Parallelism	<3 arc min or better
Flatness	λ/4 - λ/10@633nm
Edges	Fine ground
Beveled	<0.2mm x 45deg

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We are accustomed to working with both optics specialists and non-specialists, so regardless of your optics knowledge, we can help. Get in contact with ECOPTIK team to review your specific application needs and options.

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