I think the fact that you may be concerned about reflections means that you
will be concerned about the direct beam and as a consequence require all
staff to wear protective eyewear with an appropriate OD. The intensity of
the reflected beam from a plane surface will definitely be less than that of
the direct beam and therefore should prove effective against any
reflections.
Mr S Saimbi
Medical Physicist
RRPPS
P O Box 803
Edgbaston
Birmingham B15 2TB
Tel: 0121 627 2090/91 Fax: 0121 472 0393
email: [log in to unmask]
> ----------
> From: Boyle, Gerard (MPBE)[SMTP:[log in to unmask]]
> Reply To: British Medical Laser Association
> Sent: 16 April 2002 15:35
> To: [log in to unmask]
> Subject: Glass/perspex Surfaces
>
> Hello All,
>
> Blinding of windows in laser theatres appears to be generally
> recommended to prevent transmission of stray
> laser light to the outside world. Co-incidently blinding also happens to
> prevent
> any risks from reflections off the internal window surfaces back into the
> rooms.
>
> Recently I've come across windows where the blind is sandwiched between
> the two plates of glass in the window, which is obviously better from
> an infection control point of view. But now the reflection hazard is not
> eliminated.
> And I'm starting to wonder if reflections from glass/perspex surfaces are
> really
> such a big deal, and maybe the sandwiched blind is better.
>
> Anyone have any thoughts on this?
>
> Regards,
>
> Gerard Boyle
>
>
>
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