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Addendum to local rules for use of lasers
Laser Pointers
Class 1 and 2
Laser pointers in these classes will not be subject to registration when used for teaching purposes.
Class 3R
Laser pointers in these classes must be registered with the University Radiation Protection Service.
Registration will be limited to members of staff and Ph.D. and equivalent students whose application is supported by their department.
Pointers in these classes have the potential to cause serious irreversible damage to the eye and the following must be complied with before use:
- Under no circumstances should the pointer be directed towards the audience.
- Unless dictated by the nature of the presentation the room should not be entirely blacked out.
- A visual check of the room must be carried out before the presentation to ensure there are no reflective surfaces which might divert the beam back into the audience or towards the presenter.
- Class 3R laser pointers should have positive action activation, a simple lightly operated push button which could be operated inadvertently is not acceptable unless it is shrouded. (Note, some existing class 3R laser pointers are capable of being modified to comply with the above)
- The laser pointer must be clearly marked with the classification.
In the event that the presenter or a member of the audience suffers an exposure to the eye from the laser beam they must be taken to the Accident and Emergency Unit at the Royal Devon & Exeter Hospital (Wonford) and the Casualty Officer informed that exposure to a laser beam has occurred. An accident report must be made to the University Safety Office in the usual way.
Class 3B and above
Laser pointers in this class will not be registered or permitted for use by the University.
Note
Although most laser pointers are marked with a class number, there have been instances of pointers exceeding the stated class. Also, American classification differs somewhat from the European system. The Safety Office has equipment to measure the power output of lasers, and will be pleased to help where doubt exists.
