Hi,

  Seems to me we have a lot of factors involved in the protection offered by these panels as many of these have been already pointed out namely


The scattering by the frosted panel - my question would be how wavelength dependent would this be?

The transmissive properties of the glass itself at the wavelength(s) in question

Whether they are fully functioning (i.e. no apparent gaps)

And probably more.....

Just my thoughts.....

Regards

Colin.

Dr Colin Swift
Christie Medical Physics and Engineering (CMPE)
Radiation Protection (Non-ionising)
The Christie NHS Foundation Trust, 
Wilmslow Road, 
Manchester, M20 4BX
 
01614463553
-----Original Message-----
From: British Medical Laser Association [mailto:[log in to unmask]] On Behalf Of Helen Amatiello
Sent: 07 January 2014 10:45
To: [log in to unmask]
Subject: Vistamatic blinds

Dear Mailbase

I wondered what fellow LPA's take on the use of Vistamatic blinds were please?
These are sandblasted frosted glass panels that seem to be very popular for use in theatres and other locations.

I have made some rudimentary transmission checks on samples and they seem to have ~80% transmission in 280 to 800nm range that we are able to test. I do not think that this takes any account of any diffusion of the source that the sandblasting may have though.

Do LPA's use these in their locations? And if so, are other control measures put in place?

Many thanks for your responses in advance,

regards

Helen Amatiello
Clinical Scientist/Radiation Protection Adviser
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