Legal Issues of Ronja Inferno and Rexlator

Czech Republic

Eye Safety

Complies to Regulation 480/2000 Col. for naked eye for all distances
Complies to Regulation 480/2000 Col. for 20x binoculars for distance 20m and more
Doesn't comply to Regulation 480/2000 Col. for 20x binoculars and observer distance less than 20m. Therefore the installer must effectively warn all people that could go into the beam closer than 20m to not look into the device with binoculars or magnifying glass. Putting this poster on the roof door is recommended:

Postscript / PDF / EPS / BIG png / SVG (Inkscape)
For further information see Detailed 72-page eye safety study (PS, PDF, source for gnuplot) tailored specially to Regulation 480/2000 Col..

Telecommunications

Ronja doesn't need radiocommunications licence in Czech Republic.
Telecommunications licence is necessary in Czech Republic only if you provide telecommunications service.
According to an answer from Czech Telecommunication Office, Ronja doesn't need a radiocommunications licence, because her frequency lies outside of the Office's scope.
The Spectrum database has last assigned frequency at 250GHz and allows queries only up to 5000 GHz. Ronja operates far higher than 5000 GHz.

Switzerland

Eye safety

Switzerland doesn't regulate optical radiation: "die optische Strahlung sowie [...] werden durch sie [NISV] nicht verfasst" - "the optical radiation as well as [...] are not covered therein [Non-Ionising Radiation Ordinance]" - Nichtionisierende Strahlung und Gesundheit in der Schweiz, page 3
Swiss law about public venues 814.49 Verordnung vom 24. Januar 1996 über den Schutz des Publikums von Veranstaltungen vor gesundheitsgefährdenden Schalleinwirkungen und Laserstrahlen (Schall- und Laserverordnung) applies only to lasers.
Swiss law 814.710 Verordnung vom 23. Dezember 1999 über den Schutz vor nichtionisierender Strahlung (NISV) ends it's scope at 300GHz.

Telecommunications

Ronja doesn't need radiocommunications licence in Switzerland, because operates above 3000 GHz. "As the equipments operate within the near infrared spectrum, they are not subject to government licensing and no spectrum fees have to be paid (according to Art. 7 in Verordnung des Bundesrates, ,,Verordnung ueber Frequenzmanagement und Funkkonzession (FKV)'' 6. Oktober 1997, requires only the use of the frequency spectrum below 3'000 GHz a licence)." -- Swiss Confederation, Federal Office of Communications OFCOM, Free Space Laser Communications Systems, page 2.
If you provide telecommunications service, you have to notify the Telecommunications Office.
The relevant Swiss law is Telecommunications Law of 30 April 1997 (status on December 22, 2003).
Art. 22 (1) at page 6 says: "Anyone wishing to use the radiocommunications frequency spectrum must obtain a licence."
Swiss radiocommunications spectrum ends at 1000 GHz - go to Swiss National Frequency Allocation Plan and type From: 250 GHz, To: 500000 GHz.
Art. 4 (2) at page 2 says: "Anyone providing a telecommunications service in any other way must notify the Federal Office for Communicastions (the Office) accordingly.".

Country independent

In vast majority of world's countries it is not necessary to undergo any formalities to legally operate LED-driven visible optical transmitting system. The divergence angle virtually eliminates any possibility of interference with any other optical device or neighbourhood annoyance with the distinctively visible light beam and thus no legal issues should arise during the operation.
Eye safety compliance is more complicated than in case of visible system because requirements on invisible near infrared (NIR) systems are more strict:
The emitted beam poses no risk to birds and any other animals. This condition is fully preserved even in condition of device failure of any kind and/or unauthorized manipulation.
The device is optimized for low electromagnetic radiation. No EMI should occur.
The device is not certified for transmission of classified data. However, eavesdropping is so difficult, obvious and confined to narrow space, so that it is not practically feasible and unencrypted data may be transmitted without any substantial loss of privacy.
If the device is to be installed on places where lightning strike hazard exists, it is necessary to proceed according to local code for outdoor aerial installations.
The device does not contain any particular measure to suppress lightning strike induced EMP damage to connected electronic equipment. Installation of the device may increase the damage probability and/or extent due to existence of additional long runs of signal cables connected to the potential victim equipment through the device interface.
The device poses no electric shock hazard to humans when mounted in publicly accessible places as it contains voltages that are not lethal even under severe atmospherical conditions, unauthorized tampering, and any possible device failure.
The device contains no hazardous chemicals that could release and thus damage a person or the ecosystem.
The device radiates no ionizing radiation even under worst-case failure and contains no radioactive materials.