Blackout and Dim-out blinds explained

Blackout & Dim-out These blinds are those based on the roller blind. Types Blackout blind Blind giving as near to total light exclusion as possible. NOTE: It is near impossible to achieve 100% light exclusion with a blind that can be opened. This excludes the use of working blackout blinds in such situations as photographic dark rooms where high speed emulsions are exposed. Blackout blinds have totally opaque fabric and are fully enclosed in casing. Dim-out blind Blind giving a substantial reduction in light level but still allowing a certain amount to penetrate. They may be plain roller blinds or may make use of casing or masking. The level of dim-out is best specified by reference to the use required of the blind. Dark blinds dim-out blinds above. Audio visual blinds Generally low level dim-out blinds for such purposes as slide projection, presentations and VDU screens. This term is most usually applied to special venetian blinds.

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