Storage phosphor panel with increased luminous efficiency

Abstract

A storage phosphor panel having a storage phosphor layer, characterized in that a focusing layer ( 8 ) which comprises a multiplicity of adjacent microlenses ( 9 ) is incorporated in said storage phosphor panel and forms an outer surface of said panel.

1 . A storage phosphor panel having a storage phosphor layer, characterised in that 
 a focusing layer ( 8 ), which comprises a multiplicity of adjacent microlenses ( 9 ), is incorporated in said storage phosphor panel and forms an outer surface of it.    
     
     
         2 . A storage phosphor panel according to  claim 1 , wherein between said storage phosphor layer and said focusing layer a transparent protective coating is present.  
     
     
         3 . A storage phosphor panel according to  claim 1 , wherein said phosphor layer has a pixel size ( 11 ) of A and said microlenses ( 9 ) are smaller, preferably by a multiple, than said pixel size ( 11 ) of the storage layer ( 3 ).  
     
     
         4 . A storage phosphor panel according to  claim 2 , wherein said phosphor layer has a pixel size ( 11 ) of A and said microlenses ( 9 ) are smaller, preferably by a multiple, than said pixel size ( 11 ) of the storage layer ( 3 ).  
     
     
         5 . A method for preparing a storage phosphor screen comprising the steps of: 
 providing a coating solution of a storage phosphor in a binder,    applying said coating solution to a substrate forming a storage phosphor layer and    laminating a microlens array on said storage phosphor layer.    
     
     
         6 . A method according to  claim 5 , wherein in said step of applying said coating solution to a substrate forming a storage phosphor layer, said substrate is a micro lens array.  
     
     
         7 . A method for preparing a storage phosphor screen comprising the steps of: 
 providing a storage phosphor,    vapour depositing said phosphor to a substrate forming a storage phosphor layer and    laminating a microlens array on said storage phosphor layer.    
     
     
         8 . A method according to  claim 7 , wherein in said step of vapour depositing said phosphor to a substrate forming a storage phosphor layer, said substrate is a micro lens array.