Lucene case sensitive & insensitive search

Question

I have a Lucene index which is currently case sensitive. I want to add the option of having a case insensitive search as a fall-back. This means that result

Answer 1

Did you already tried copyField? see http://wiki.apache.org/solr/SchemaXml#Copy_Fields

If not define a new field B with a different configuration and copy field A into B via copyField