Touch Appearance

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.


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 %.

Energy enhancement for solar collectors (BG-TE)
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 our contact partner, contact us directly using our contact form or let us call you back.

Surface Technology
Monika Mack
Fon +49 9077 958 95-19
monika.mack [at]
Surface Technology
Désirée Olk
Fon +49 9077 958 95-25
desiree.olk [at]

Let us call you back!

Callback request


Data sheet - Pretreatment of Float Glass
Data sheet

Pretreatment of Float Glass

application/pdf (106 KB)

Data sheet - Chemical Polishing
Data sheet

Chemical Polishing

application/pdf (802 KB)

Data sheet - BG-Classic 2Plus
Data sheet

BG-Classic 2Plus

application/pdf (262 KB)

Data sheet - BG-TE
Data sheet


application/pdf (435 KB)

Data sheet - BG-NFT
Data sheet


application/pdf (129 KB)

Data sheet - BG-NFT-AL
Data sheet


application/pdf (191 KB)

Data sheet - BG-Nonflex
Data sheet


application/pdf (203 KB)

Company Brochure - Surface Technology
Company Brochure

Surface Technology

application/pdf (3 MB)