Etched glass

Transmission Increase. High Light and Energy Yields.

Berliner Glas has developed an etching process that creates a glass surface with reduced refractive index. Adjusting the appropriate thickness for that layer results in an increase in light transmittance and accordingly to a reduction of reflected light.

Transmission enhancing etching

The BG-TE etching can be performed on a variety of glass types or unconventional substrate geometries, for example, bent glass, highly curved lenses, molded glass or tubes. Also the inside of tubes, even curved ones, can be treated to increase light transmittance.

The transmission enhancing etching can also be applied on thermally strengthened safety glass – after its final treatment. The process does not require heat or vacuum, nor clean room technology or sophisticated glass cleaning machinery. Therefore it is economically very attractive and can reduce residual reflection to as low as 1 %.

Solar collectors with transmission increasing glass

Energy enhancement for solar collectors (BG-TE)

Sports stadium lights with transmission increasing glass

Enhancement of light transmission for sports stadium lights (BG-TE)

Besides protection, more brightness and energy transmission is the objective of functional glass in lighting applications, photovoltaics or solar collectors. The special surface treatment of our BG-TE glass substantially increases the transmitted light.

Technical details are available here:

BG-TE. More light, more performance

Contact our specialists

Please choose your contact partner:

Kontakt Technisches Glas Icon
Désirée Olk
Surface Technology
Fon +49 9077 958 95-25
Kontakt Technisches Glas Icon
Monika Mack
Surface Technology
Fon +49 9077 958 95-19
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Brochures & presentations

Company Brochure

Surface Technology

Data sheets

Surface-structured glass (Surface Technology)
Data sheet

Chemical Polishing

Data sheet


Data sheet

BG-Classic 2Plus

Data sheet


Data sheet

Pretreatment of Float Glass

Data sheet


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Berliner Glas KG Herbert Kubatz GmbH & Co.
Weidenhalde 20, 74523 Schwäbisch Hall, Germany

Fon +49 791 93 295-0
techglas [at]

Berliner Glas Herbert Kubatz GmbH & Co. KG Syrgenstein
Giengener Strasse 16, 89428 Syrgenstein-Landshausen, Germany

Fon +49 9077 95 895-0
syrgenstein [at]

Contact details