Details in accordance with Article § 5 of the German Telemedia Act (TMG):

PT Photonic Tools GmbH
Johann-Hittorf-Str. 8
12489 Berlin

Dr Björn Wedel, Dr. Bernhard Lummer


Entry in the Commercial Register.
Court of Registration: Berlin
Registernumber: HRB 154069

Taxnumber: DE 293 215 864


Liability for contens

The contents of the website were compiled with great care., however, will not accept any responsibility for the correctness, completeness and up-to-dateness of the contents. In accordance with article § 7 paragraph 1 of the German Telemedia Act (TMG) is responsible as a service provider for its own contents on this website in terms of the general laws. In terms of paragraphs §§ 8 to 10 of  the TMG the PT Phortonic Tools GmbH is not obliged as a service provider to monitor transmitted or stored foreign information or to investigate circumstances that would indicate illegal activity. Obligations to remove or block the use of information under the general laws remain unaffected. However, a liability in this regard only arises as from the date of knowledge about a specific contravention of the law. Upon notification of such violations, these contents will be removed immediately by us. 

Liability for Links 

The offer of contains links to external websites, the contents of which has no influence over. Therefore will not accept any responsibility for their contents. The respective provider or operator always remains responsible for the contents of any linked sites. The linked sites were checked at the time of linking for possible legal contraventions. Illegal contents did not come to attention at the time of linking. The permanent scrutiny of the linked pages is unreasonable without concrete evidence of a violation. Upon notification of contraventions, will immediately remove such links. 


The contents and contributions on these pages created by are subject to German copyright law. Duplication, processing, distribution and any kind of exploitation outside the limits of copyright require the written consent of the respective author or creator. Downloads and copies of these pages are only permitted for private, non-commercial use. As far as the content of this site was not created by the website operator, the copyright of third parties is recognized. In particular, third party content is clearly identified as such. Should you nevertheless become aware of any copyright infringements, requests that it be notified of such. Upon notification of any violations, will remove such content immediately.

Privacy Policy 

The use of is usually possible without providing personal information. Insofar as personal data (e.g. name, address or email addresses) is collected, this occurs, as far as possible, on a voluntary basis. Personal data will not be passed on to third parties without your express consent. points out that data transmission via the Internet (e.g. communication by e-mail) may have security gaps.The complete protection of data against access by third parties is not possible. 

The use of published contact data by third parties for forwarding unsolicited advertisements and information materials is hereby expressly excluded. The operators of expressly reserve the right to PT Photonic Tools GmbH legal steps in case of unsolicited promotional materials such as spam e-mails being forwarded.

Facebook Privacy Protection Policy

Our website uses social plugins (“plugins”) provided by the social network, operated by Facebook Inc., 1601 S. California Avenue, Palo Alto, CA 94304, USA (“Facebook”). The plugins are identifiable by a Facebook logo (white letter f on blue background or a thumb up icon) or the notice “Facebook Social Plugin”. For a full list of all social Plugins please see

When you visit a page of our website that contains a social plugin, your browser establishes a direct connection to Facebook servers. Facebook directly transfers the plugin content to your browser which embeds the latter into the website, enabling Facebook to receive information about your having accessed the respective page of our website. Thus we have no influence on the data gathered by the plugin and inform you according to our state of knowledge:

The embedded plugins provide Facebook with the information that you have accessed the corresponding page of our website. If you are logged into Facebook, your visit can be assigned to your Facebook account. If you interact with the plugins, for example by clicking “Like”, or entering a comment, the corresponding information is transmitted from your browser directly to Facebook and stored by it. Even if you are not logged into Facebook, there is possibility that the plugins transmits your IP-address to Facebook.

For the information on the purpose and scope of data collection and procession by Facebook, as well as your rights in this respect and settings options for protecting your privacy please visit Facebook’s privacy policy:

If you are a Facebook member and do not want Facebook to connect the data concerning your visit to our website with your member data already stored by Facebook, please log off Facebook before entering our website. Further you can block Facebook social Plugins by using add-ons for your browser, like the “Facebook Blocker“.

Google Analytics Privacy Protection Policy

This website uses Google Analytics, a web analytics service provided by Google, Inc. (“Google”). Google Analytics uses “cookies”, which are text files placed on your computer, to help the website analyze how users use the site. The information generated by the cookie about your use of the website (including your IP address truncated by the last octet prior to its storage using the “_anonymizeIp()” method) will be transmitted to and stored by Google on servers in the United States . Google will use this information for the purpose of evaluating your use of the website, compiling reports on website activity for website operators and providing other services relating to website activity and internet usage. Google may also transfer this information to third parties where required to do so by law, or where such third parties process the information on Google’s behalf. Google will not associate your IP address with any other data held by Google. You may refuse the use of cookies by selecting the appropriate settings on your browser, however please note that if you do this you may not be able to use the full functionality of this website. By using this website, you consent to the processing of data about you by Google in the manner and for the purposes set out above.

You can opt-out from being tracked by Google Analytics with effect for the future by downloading and installing Google Analytics Opt-out Browser Add-on for your current web browser:

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